AI Agent Testing Specialist Jobs in Spain

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neoris logo
Full-time|On-site|Madrid, Spain

Join neoris as a Senior Python Engineer specializing in AI agents and cloud technologies. In this role, you will leverage your expertise in Python to develop innovative AI solutions that enhance our cloud offerings. You will work collaboratively within a dynamic team, contributing to cutting-edge projects that drive our clients' success.

Apr 6, 2026
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Darwin AI logo
Full-time|On-site|Barcelona, Catalonia, Spain

Join our elite AI Special Forces team at Darwin AI! We are seeking a dynamic and enthusiastic AI Support Specialist who is committed to providing rapid, effective, and high-quality assistance to our clients. If you are passionate about technology and AI, and enjoy tackling challenges head-on, this role is a perfect fit for you.As an AI Support Specialist, you will be instrumental in addressing client inquiries and resolving issues related to their AI agents. You will serve as the frontline for clients needing assistance with technical problems and system integrations. Your ability to troubleshoot effectively and collaborate with teams across Customer Success, Product, and Engineering will ensure that our clients receive exceptional support and maintain a strong relationship with Darwin AI.Your responsibilities will include:Responding to customer inquiries through platforms such as WhatsApp, email, and Slack, ensuring swift responses and high satisfaction rates.Troubleshooting and resolving technical issues, particularly those involving AI behavior, configuration, and API integrations.Monitoring alerts from internal tools and acting upon customer feedback submitted through the Darwin platform.Collaborating closely with Product and Engineering teams to escalate complex issues and contribute to product enhancements.Documenting support activities in our systems to maintain accurate records of issues and solutions.Identifying recurrent issues and assisting in the development of internal documentation and FAQs.Teaming up with Customer Success and Onboarding to provide a seamless customer experience.Auditing AI interactions to discover bugs or areas for improvement.Ensuring that all critical feedback and issues are resolved within agreed service level agreements (SLAs).

Dec 11, 2025
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Darwin AI logo
Full-time|On-site|Barcelona, Catalonia, Spain

Join our dynamic Operations team at Darwin AI as an AI Onboarding Specialist! We are seeking an individual who is not only enthusiastic about technology and artificial intelligence but also values providing exceptional service. This position is perfect for those who enjoy initiating client relationships, converting requirements into functional AI solutions, and ensuring a seamless implementation process for our new customers.In this crucial role within our Onboarding team, you will be instrumental in the initial phase of the customer journey—helping clients to unlock the potential of Darwin AI from day one.Your responsibilities will include: Facilitating the onboarding process for new client accounts, ensuring all essential information is gathered and configured for a successful launch. Leading kick-off meetings with clients to align expectations, collect requirements, and guide them through the onboarding process. Building and configuring AI assistants utilizing internal tools, tailored to client specifications and business logic. Collaborating with Sales, Customer Support, and Product teams to ensure a smooth transition and cohesive client experience. Maintaining clear and consistent communication with clients via WhatsApp, following up regularly to address any challenges and ensure progress. Delivering the initial version of the AI solution promptly and ensuring it adheres to quality standards before going live. Monitoring and managing onboarding timelines to ensure accounts are launched within the service level agreement (SLA) and are not identified as churn risks. Providing initial training and resources to empower clients in testing and understanding their AI assistant.

Aug 18, 2025
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toloka-ai logo
Contract|$30/hr - $30/hr|Remote|Remote — València, Valencian Community, Spain

Please submit your CV in English and specify your English proficiency level. Mindrift, in partnership with toloka-ai, connects experienced professionals with project-based work focused on testing and improving AI systems for leading technology companies. This position is a freelance, project-based role, not a permanent staff job. Role overview The Senior Python Developer for Functional Testing Projects will design and implement functional black box tests for large codebases across multiple programming languages. This work involves setting up and maintaining Docker environments, monitoring code coverage, and using LLMs such as Roo Code and Claude Code to streamline development. The role requires familiarity with Linux, Docker, and modern testing tools, as well as experience interpreting code in languages like C, C++, Rust, and Go with LLM support. What you will do Develop functional black box tests for substantial codebases written in different programming languages. Configure and manage Docker environments to ensure reproducible builds and testing across platforms. Track code coverage and set up automated scoring criteria to meet industry standards. Leverage LLMs (such as Roo Code and Claude) to automate tasks, accelerate development, and enhance code quality. Requirements Minimum 5 years as a Software Engineer, focusing primarily on Python. Extensive experience with pytest, including fixtures, session-scoped configurations, and timeouts. Proven skill in creating black-box functional tests for CLI tools. Strong expertise in Docker: writing reproducible Dockerfiles, managing user contexts, and maintaining secure workspaces. Advanced Linux and Bash scripting skills; comfortable debugging in containerized setups. Familiarity with modern Python tools (uv, pyproject.toml, packaging). Ability to read and understand code in C, C++, Rust, and Go, with assistance from LLMs. Experience using LLMs (Claude Code, Roo Code, Cursor) to automate development and generate test cases. English proficiency at B2 level or higher. Preferred qualifications Experience with agent evaluation platforms and MCP CLI. Tools and technologies Python (pytest, uv, Pillow), Docker, Bash, Git Submodules, C/C++/Rust/Go (reading), Dagger, GitHub Codespaces, LLMs (Claude Code, Roo Code, Cursor), coverage.py, gcov, kcov. Benefits and compensation Freelance, project-based assignments through the Mindrift platform powered by Toloka AI. Fully remote with flexible scheduling: set your own hours and work 20-30 hours per week. Compensation depends on project scope and expertise. For this project, AI trainers can earn up to $30 per hour. Location Remote , València, Valencian Community, Spain

Apr 24, 2026
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toloka-ai logo
Part-time|$34/hr - $34/hr|Remote|Remote — València, Valencian Community, Spain

Please submit your CV in English and indicate your level of English proficiency.At Mindrift, we bridge the gap between specialists and innovative AI projects for top technology companies, focusing on the evaluation, testing, and enhancement of AI systems. This is a project-based engagement, not a permanent position.Opportunity OverviewEach project presents distinct tasks, with potential responsibilities including:Creating original computational statistics problems that mimic real-world mathematical research workflows;Formulating problems that necessitate Python programming solutions (utilizing libraries such as Numpy, SciPy, Sympy);Ensuring that problems are computationally intensive and cannot be manually resolved in a reasonable time frame (days/weeks);Developing problems that require complex reasoning chains in fields such as number theory, combinatorics, graph theory, and numerical analysis;Grounding problems in actual research challenges or practical mathematical applications;Validating solutions using Python and standard mathematical libraries;Clearly documenting problem statements and providing verified correct answers.Qualifications We SeekThis role is ideal for statistics specialists with Python expertise, who are interested in part-time, non-permanent projects. Preferred qualifications include:A degree in Statistics or a related field;Proficiency in Python for numerical validation; familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, and domain-specific libraries may be equivalent;A minimum of 2 years of professional experience, including applied, research, or teaching backgrounds;Strong written English skills (C1 or higher);Professional certifications (e.g., CMME, SAS Certifications, CAP) and experience in international or applied projects are advantageous.How the Process WorksSubmit your application → Complete qualification requirements → Join a project → Execute tasks → Receive payment.Project Time CommitmentFor this project, active tasks are estimated to require approximately 10–20 hours per week, varying based on specific project demands. This is an estimate and not a guaranteed workload.CompensationContributors can earn up to $34 per hour, depending on their expertise level and contribution pace. Compensation may vary across projects based on scope, complexity, and required skills. Note that other projects on our platform may feature different earning potentials based on their criteria.

Apr 30, 2026
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zooplusse logo
Full-time|On-site|Madrid

zooplusse is looking for a Senior AI Engineer to help shape the future of Agentic Commerce. This position is based in Madrid and centers on building advanced artificial intelligence solutions that improve customer interactions and streamline business operations. Role overview This role focuses on designing and implementing AI-driven systems for commercial applications. Collaboration with a skilled team is central, with a shared goal of developing technology that supports better customer experiences and more efficient processes. What you will do Develop and refine AI models tailored to Agentic Commerce use cases Work closely with colleagues to integrate new AI features into existing platforms Contribute ideas and technical expertise to drive innovation in customer-facing solutions Location This position is based in Madrid.

Apr 29, 2026
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Visium logo
Full-time|On-site|Barcelona, Catalonia, Spain

About UsAt Visium, we empower enterprise leaders to craft their AI and data strategies, drive transformative initiatives, and effectively integrate AI into their operations—ensuring that their organizations are resilient and future-ready. As a spin-off from Visium, we are channeling our extensive enterprise knowledge into a groundbreaking product: a category-defining Agentic AI solution tailored specifically for pharmaceutical companies.Our product is anchored in AI designed for highly regulated sectors, operating where complexity, compliance, and trust are paramount. Our mission is clear: to expedite the delivery of life-saving medications to the market, making the process faster, more cost-effective, and safer, thereby unlocking significant benefits at scale.With deep roots in enterprise AI and an ambitious vision for the future, we are building a team of innovators, engineers, researchers, and product thinkers to shape a product that is not only technically superior but also transformative.Join us on a mission to redefine the future of work, creativity, and knowledge. Are you ready to help us construct the future of Agentic AI?Role OverviewWe are in search of a Full-Stack Software Engineer eager to help us create the foundation of our Agentic AI Platform from the ground up. You will translate cutting-edge AI concepts into real, production-ready software utilized by scientists and researchers daily.Your responsibilities will encompass the entire stack: from developing intuitive frontends that simplify complex AI systems to designing robust APIs and backend services that facilitate autonomous agents. You will work collaboratively with ML engineers, product designers, and domain experts to forge a platform that merges human expertise with intelligent automation.This role is hands-on and impactful, granting you significant ownership. You will play a critical role in making architectural decisions, experimenting with innovative agentic frameworks, and helping to establish what “state-of-the-art” signifies in the realm of trustworthy AI for life sciences.If you thrive in dynamic environments, are passionate about creating groundbreaking solutions, and aspire to influence the next generation of intelligent software, we would be excited to connect with you.Your daily activities might include:Designing and implementing full-stack features that bring agentic workflows to life for scientists and researchers.Creating orchestration layers, retrieval pipelines, and APIs for intelligent agents using Python and FastAPI.Developing user-friendly and high-performance frontends in React and TypeScript for configuring and monitoring AI agents.Collaborating with ML engineers to integrate LLMs, embeddings, and RAG systems into production settings.Building and maintaining cloud-native infrastructure using containers, Kubernetes, and CI/CD automation.Contributing to architectural decisions, SDK design, and enhancing the developer experience.

Jan 14, 2026
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Syntegon Technology logo
Full-time|On-site|Terrassa

Syntegon Technology seeks a Category Agent Specialist to join its Procurement team in Terrassa. This position centers on strengthening procurement processes and playing an active part in strategic sourcing. Key responsibilities Assist with cost reduction initiatives within assigned procurement categories Oversee supplier relationships and monitor supplier performance Participate in strategic sourcing projects Collaborate with colleagues from other departments to ensure procurement activities support business objectives Role focus This role emphasizes process improvement and teamwork across functions to help Syntegon Technology meet its procurement and sourcing goals.

Apr 22, 2026
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Mindrift logo
Contract|$50/hr - $50/hr|Remote|Remote — València, Valencian Community, Spain

This freelance Integration Developer (API Specialist) role at Mindrift centers on building and optimizing system integrations for the Tendem project. The position is remote, with a location focus in València, Valencian Community, Spain. Work as part of a hybrid team that combines AI and human expertise to deliver scalable, reliable solutions using Generative AI and practical knowledge. Role overview This part-time contract position suits professionals skilled in APIs, webhooks, and managing data pipelines across multiple systems. The work involves collaborating with both technical and AI-driven team members to ensure seamless integration between business platforms. What you will do Design and assess integrations for core business systems, including CRMs, advertising tools, and email platforms. Develop and refine workflows using APIs, webhooks, and data pipelines (both real-time and batch). Connect and synchronize data between platforms such as Airtable, Google Sheets, and Notion. Maintain reliable, real-time data transfer and ensure consistency across systems. Troubleshoot and enhance data flow performance, focusing on latency and failure handling. Support automated communication integrations, including messaging, outreach, and calling workflows. Compensation Contributors may earn up to $50 per hour, depending on experience and contribution pace. Actual rates will vary based on project scope and complexity. Learn more about the Tendem project at https://tendem.ai/.

Apr 24, 2026
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Mindrift logo
Contract|$50/hr - $50/hr|Remote|Remote — València, Valencian Community, Spain

Mindrift is seeking talented Integration Developers (API Specialists) to contribute to the Tendem project (https://tendem.ai/), creating seamless system integrations within our innovative hybrid AI + human ecosystem.In this role, known as an AI Pilot at Mindrift, you will work hand-in-hand with Tendem Agents who manage repetitive tasks, while you lend your expertise in system integration, structured analysis, and quality assurance to ensure dependable and scalable data connectivity across diverse platforms.This part-time, remote opportunity is perfect for professionals with practical experience in APIs, webhooks, and constructing multi-system data workflows.What We DoThe Mindrift platform connects experts with AI initiatives from leading technology pioneers. Our mission is to harness the power of Generative AI by tapping into real-world expertise globally.About the RoleThis freelance position is part of the Tendem project. As an Integration Developer (API Specialist), you will design, develop, and enhance integrations between business systems, ensuring consistent data flow and synchronization across various platforms.Key ResponsibilitiesDesign and assess integrations between key business systems (CRMs, advertising platforms, email tools)Develop and refine workflows utilizing APIs, webhooks, and real-time or batch data pipelinesIntegrate and synchronize databases across platforms (e.g., Airtable, Google Sheets, Notion)Guarantee reliable, real-time data transfer and consistency across systemsDiagnose and enhance data flow performance, latency, and error handlingFacilitate the integration of automated communication systems (e.g., messaging, outreach, or calling workflows)CompensationParticipants in this project can earn up to $50 per hour, depending on their expertise and contribution pace. Compensation may vary across projects based on their scope, complexity, and required skills.

May 2, 2026
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seQura logo
Full-time|On-site|Barcelona, Catalunya [Cataluña], Spain

About seQuraseQura is at the forefront of fintech innovation, delivering flexible and user-friendly payment technologies that enhance merchants' ability to attract, convert, and retain customers. We are committed to improving sales performance by customizing solutions across various sectors including Retail, Education, Eyewear, Repairs, and Travel, addressing specific challenges to achieve outstanding results.Our mission is to empower savvy consumers seeking value, convenience, and flexibility in their shopping experiences. We offer innovative payment options that allow customers to save, access interest-free credit, or make manageable payments over 24 months.Founded in Barcelona, seQura is a rapidly growing fintech company expanding its reach throughout Southern Europe and Latin America, boasting over 50% CAGR and nearing €100M in Annual Recurring Revenue. Our exceptional service has earned us the trust of over 5,000 businesses and nearly 2 million shoppers, reflected in our impressive NPS of 87%, a Trustpilot rating of 4.7/5, and a Glassdoor rating of 4.7/5.About the Role We are developing seQura’s Smart Agent platform, an advanced intelligent agent system designed to assist shoppers throughout their purchasing journey. This platform integrates Large Language Models (LLMs) for human-like interaction with retrieval-augmented generation (RAG) utilizing seQura’s data, web crawling, and structured product information.This position focuses on the creation of robust, production-ready backend systems that empower these agents to effectively address shopper needs. AI research, data science, or mathematical modeling are not required, as all necessary frameworks are already established.Key Responsibilities:Design and implement scalable backend systems for agent workflows, managing context, state, and interactions.Safely and efficiently integrate AI agent functionalities with core platforms such as payments, shopper accounts, risk management, and merchant services.Utilize RAG frameworks and structured data to generate intelligent responses without the need for model fine-tuning.Collaborate with Product, Frontend, and other teams to deliver seamless user experiences.

Jan 13, 2026
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Exoticca logo
Full-time|Hybrid|Barcelona, Catalonia, Spain

Join Exoticca as a Travel Agent - Amadeus Specialist!At Exoticca, we are not just an online travel agency; we are passionate creators of unforgettable journeys. Our mission revolves around crafting exceptional long-distance trips that resonate with our customers' dreams and aspirations. We pride ourselves on delivering unparalleled value, while nurturing a deep respect for our planet and the diverse cultures we explore.As part of a vibrant, multicultural team that is rapidly expanding on a global scale, you will play a crucial role in shaping the future of travel. We are looking for dedicated individuals who are eager to contribute to our vision of establishing the leading travel company of our era.Your Role:In the capacity of a GDS Specialist within Exoticca’s Flight Operations team, you will be instrumental in supporting our travel operations daily. You will:Assist with Travel Operations tasks, including flight changes, cancellation requests, and refund processing.Address and escalate GDS issues, ensuring prompt resolution of cases.Manage negotiated rates and process advanced refunds through GDS.Collaborate directly with our land suppliers for pre- and post-booking requests.What We Are Looking For:Fluent English communication skills (additional languages such as French or Spanish are a plus).Extensive knowledge of Amadeus Flights and GDS.Proven experience negotiating fares and commissions via GDS.Effective time management and multitasking abilities.High adaptability and flexibility with your schedule, as this role involves rotating shifts, including evenings, weekends, and holidays.Preferred Qualifications:Minimum of 2 years of customer support experience in the travel industry, ideally with a focus on flights.A proven track record of thriving in fast-paced environments.A proactive attitude towards problem-solving and a willingness to learn quickly.What We Offer:Competitive compensation package aligned with your experience and responsibilities.Flexible compensation management for diet, transportation, and private health insurance through Cobee.Hybrid work model with our office located in Barcelona.A permanent contract from day one.Exclusive travel packages at discounted rates!Referral bonuses for bringing talented individuals to our team.Unlimited coffee, team lunches, English lessons, and biannual company events.Join a fun, motivated, and multicultural team at a fast-growing organization!Become part of Exoticca and help us create unforgettable life milestones through travel experiences that inspire and connect people. This is your chance to be a key player in a forward-thinking travel brand on a global stage!Exoticca is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

Feb 24, 2026
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T-Systems International GmbH logo
Full-time|On-site|Madrid

Project OverviewJoin the innovative team at the Telco Hub in Madrid, where we are at the forefront of integrating IT and telecommunications, developing and expanding Telco as a Platform (TaaP) on our proprietary layered cloud infrastructure. Our cross-functional teams deliver state-of-the-art services for some of Europe’s leading operators.Our commitment is to enhance customer experiences through three pivotal principles: Cloud-based – Utilizing cutting-edge technologies for optimal scalability and performance. Automated – Enhancing efficiency via AI, automation, and DevOps methodologies. Sustainable – Fostering environmentally-friendly, future-ready infrastructure.We seek exceptional engineering talent who are eager to evolve both technically and professionally in a vibrant and collaborative setting. If you are driven by a passion for redefining the future of telecommunications, this is the opportunity for you!The Voice & Messaging (T-VM) unit within Deutsche Telekom Technik GmbH oversees all voice and messaging platforms across Deutsche Telekom Technik’s fixed and mobile networks throughout their lifecycle. The platforms managed by T-VM are integral to Telekom Deutschland's core business, focusing on stability, quality, innovation, and efficiency. The ACS Squad (Announcement-, Control & Support Systems) is tasked with the complete lifecycle management of critical IMS components within DT Technik.Role Responsibilities:• Management of IMS-MRF (Media Resource Function) deployed on Kubernetes.• Oversight of OneiDNS, a cloud-native DNS service for all IMS nodes in fixed and mobile networks, also deployed on Kubernetes.• Administration of VoIP Support Systems within the IMS fixed network provisioning chain, utilizing a VMware-based application landscape.• Operate as part of a DevOps team, taking full ownership of design, engineering, deployment, and operations.• Tackle the upcoming challenge of developing a new AI Calling framework on DT Technik’s CaaS Kubernetes platform, facilitating real-time speech processing and translation within IMS call flows.We invite a motivated and technically adept individual to join our team and contribute to this transformative journey.

Mar 4, 2026
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dLocal logo
Full Time|On-site|Madrid

Join dLocal and Shape the Future of Payments!At dLocal, we empower leading global enterprises to streamline payment processing across 40 emerging markets. Our innovative solutions not only enhance conversion rates but also facilitate seamless payment expansion, helping our clients tap into the fastest-growing markets worldwide. As both a payment processor and merchant of record, we enable businesses to thrive in these dynamic environments.By becoming part of our team, you will collaborate with over 1,000 diverse professionals from 30+ nationalities, shaping an international career that positively impacts millions of lives every day. We are a community of builders who embrace challenges, prioritize customer satisfaction, and are driven to innovate. If this resonates with you, we are excited for you to join us!About Agentic Development at dLocalOur Agentic Development product is designed to accelerate software delivery by transforming well-defined requirements into ready-to-review pull requests, tightly integrated with our Software Development Life Cycle (SDLC). This strategic initiative aims to reduce lead times, enhance quality and consistency, and empower developers to focus on higher-value tasks.Role OverviewWe are looking for an experienced AI Product Manager to lead and expand our Agentic Development product. Your primary objectives will be to enhance capabilities, foster product adoption, and significantly reduce development lead times. You will collaborate with teams across Development Productivity, Engineering, AI, Security, and other domains to shape the product roadmap, implement improvements in planning, execution, and validation workflows, and establish the necessary telemetry and change management for enterprise-wide adoption. This role demands hands-on software development experience, alongside expertise in product management and applied AI.Desired MindsetWe value a builder-first mentality in our Product Managers who are outcome-driven, focused on measurable improvements in lead time and quality. You should possess a systems-thinking approach that connects upstream inputs to downstream results, and a pragmatic understanding of AI that clarifies where agents excel and where they fall short, enabling safe instrumentation, gating, and iterative processes.

Jul 16, 2025
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zooplusse logo
Full-time|On-site|Madrid

zooplusse is hiring a Senior AI Engineer focused on Agentic Commerce in Madrid. This position centers on developing advanced AI solutions that improve customer experiences and support business objectives. Role overview The Senior AI Engineer will work closely with a collaborative team to design and implement artificial intelligence strategies for commerce applications. The goal is to use AI methods to create new ways for customers to interact and for the business to grow. What you will do Develop and refine AI-driven solutions for commerce settings Collaborate with team members to innovate and execute AI strategies Contribute to projects that aim to reshape how customers engage with products and services Location This role is based in Madrid.

Apr 29, 2026
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Constructor logo
Full-time|Remote|Remote — Spain

About UsConstructor is a pioneering platform revolutionizing search and discovery in the e-commerce sector. We are dedicated to optimizing essential metrics such as revenue, conversion rates, and profitability. Our innovative search engine, developed entirely in-house utilizing advanced transformers and generative LLMs, leverages its core and personalization capabilities to enhance everything from search functionalities to recommendations and shopping agents. Our engineering department is our largest, and we take pride in having never lost an A/B test against competing technologies, continuously striving to maintain our market-leading position while operating at the forefront of AI advancements.Designed for extreme scalability, our engine handles over 1 billion queries daily across 150 languages and approximately 100 countries. Major e-commerce companies, including Sephora, Under Armour, and Petco, rely on our technology.We are a passionate team committed to solving challenges and enhancing the experiences of our customers and colleagues. Our core values include empathy, openness, curiosity, and a commitment to continuous improvement, which we believe empowers everyone in the company to excel.Founded in 2019 by Eli Finkelshteyn and Dan McCormick, Constructor is a U.S.-based company that continues to thrive under their leadership.About YouAs a product designer, you are focused on solving problems rather than merely creating screens. You thrive in ambiguous situations, collaborating with product managers to define strategic directions. You excel at translating research insights into production-ready interfaces, working closely with engineers to deliver impactful results.The TeamThe AI Agent Tools team is on a mission to create a new category of e-commerce experiences through intelligent agents that assist shoppers, leverage merchandising expertise, and drive substantial business outcomes. This represents one of the most critical design challenges in retail today, presenting vast opportunities for innovation.RequirementsThe RoleYou will pioneer the future of product discovery, transforming the shopping experience from intent to purchase through AI innovation.Define the essence of agentic shopping, moving beyond conventional chatbots to establish new interaction patterns that allow AI to understand and fulfill shopper desires. Your innovative patterns will influence industry standards.Collaborate with Agent Orchestrators—experts in data analysis, design, and shopper psychology—to design intuitive dashboard tools that empower merchandisers to configure, train, and optimize shopping journeys independently.Demonstrate the effectiveness of your designs in real-world scenarios, conducting UI experiments on live retail sites and validating new shopping experiences with actual users.

Mar 23, 2026
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Antai Ventures logo
Full-time|On-site|Barcelona Office

About Antai VenturesAntai Ventures, a premier venture studio based in the heart of Barcelona, is dedicated to partnering with visionary entrepreneurs to create groundbreaking and scalable enterprises from the ground up. Since our inception in 2012, we have successfully co-founded over 30 ventures, including notable names like Glovo, Wallapop, PlatanoMelon, and PiperAI. Our portfolio companies have collectively secured more than $1.5 billion in funding, generated over $3 billion in shareholder value, and contributed to the creation of over 5,000 jobs. About JuryoJuryo is pioneering an agentic AI platform tailored for small and mid-sized law firms, with a focus on high-volume B2C legal practices (extranjería, LSO, laboral, deudas, civil). Our innovative voice and WhatsApp agents streamline client qualification, document generation, case management, and billing workflows, resulting in a remarkable 2× increase in lead conversion for our clients.We have transitioned from concept to revenue within mere months:Successfully onboarded multiple paying law firmsAchieved six-digit ARRFacilitated daily interactions (over 200 calls/WhatsApps) by real customersEstablished a clear product-market fit in a vast and fragmented market exceeding €5 billion in Spain aloneAs a co-founder, you will play a pivotal role in defining our vision, establishing the pace of growth, and taking on significant responsibilities. In return, we offer substantial capital backing and hands-on support across various domains including Product, Technology, Design, Go-To-Market, Legal, Talent, Finance, and Fundraising to expedite your journey from inception to success. What You’ll DoCollaborate with the founding team to develop a robust technical vision and transform that vision into a comprehensive, value-driven roadmap.Engage in hands-on coding on a daily basis, utilizing cutting-edge AI orchestration techniques (multi-agent workflows, toolformer, dynamic RAG pipelines) and solid engineering principles (DDD, SOLID, relentless automation) to provide exceptional customer value rapidly.Recruit, mentor, and expand a top-tier engineering team, covering backend, frontend, data, and DevOps, ensuring the delivery of products that customers actively engage with on a weekly basis.Architect high-throughput data pipelines to enhance agent performance while ensuring security and compliance.

Jul 23, 2025
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Sierra logo
Full-time|On-site|Madrid

About UsAt Sierra, we are pioneering an innovative platform designed to enhance business interactions through advanced AI, fostering better and more human-centric customer experiences. Although primarily based in San Francisco, our team is expanding globally with offices in Atlanta, New York, London, France, Singapore, and Japan.Our operations are driven by core values: Trust, Customer Obsession, Craftsmanship, Intensity, and Family. These principles shape our culture and define our commitment to excellence in every endeavor.Our co-founders, Bret Taylor and Clay Bavor, bring a wealth of experience from top tech companies. Bret, as the Board Chair of OpenAI, has previously held leadership roles at Salesforce and Facebook, while Clay has an impressive history at Google, leading pivotal projects in AR/VR and product design.Your RoleDesign and Deliver Robust AI Agents: You will create and implement high-performance, reliable AI agents that are essential to Sierra’s operational success. These systems will be mission-critical, running in real-world applications across diverse industries including finance, healthcare, and commerce.Lead the Agent Development Life Cycle (ADLC): You will take full ownership of the ADLC, overseeing the process from pilot testing to deployment and continuous improvement. Your responsibilities will include building, optimizing, and advancing AI agents in live environments, while establishing best practices for the ADLC.Collaborate with Leading Enterprises and Innovative Startups: You will engage directly with executives from major enterprises to identify their critical business challenges, developing AI agents that revolutionize their operations. Additionally, you will partner with pioneering startups to integrate AI solutions that enhance their offerings.

Dec 5, 2025
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inetum2 logo
Full-time|On-site|Madrid

Join our dynamic team at inetum2 as a Senior Test Execution Specialist. In this pivotal role, you will be responsible for executing comprehensive testing strategies to ensure the highest quality of our software solutions. You will collaborate closely with cross-functional teams to identify issues, improve processes, and deliver outstanding results.

Mar 19, 2026
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Prosper AI logo
Full-time|On-site|Barcelona

Join Prosper AI as an AI StrategistLocation: Barcelona (On-site)Type: Full-timeAbout Prosper AIAt Prosper AI, we are revolutionizing healthcare through our innovative AI Phone Agents that provide human-like expertise while drastically cutting costs. Our AI agents streamline administrative tasks such as patient scheduling, claims status checks, and benefit verifications, aiming to eliminate $200 billion in administrative waste, thus allowing healthcare professionals to concentrate more on patient care.About the RoleAs an AI Strategist, you will be pivotal in deploying and optimizing our AI agents across some of the most intricate healthcare organizations globally. You will lead strategic initiatives from configuration to full-scale production, ensuring measurable impacts for our clients. Your insights will help refine our external deployments and internal best practices.Key ResponsibilitiesOversee the complete deployment of AI agents on Prosper AI’s platform for U.S. healthcare clients, including hospitals and clinics.Collaborate with clients and internal teams to map out administrative workflows and pinpoint areas ripe for AI-driven automation.Evaluate deployment performance data to identify challenges and promote continuous improvement.Create and enhance internal playbooks and frameworks to expedite future deployments.Transform complex operational challenges into actionable strategies that connect technology with healthcare operations.Who You AreHolds a Bachelor’s degree or higher in Computer Science, Engineering, Business, Economics, or a related field.Possesses strong analytical skills with the ability to dissect complex processes for AI impact.Demonstrates a passion for the convergence of AI, healthcare, and operations.Thrives in a dynamic startup environment with evolving priorities and significant ownership.Bonus: Familiarity with healthcare workflows, LLMs, automation tools, or enterprise software deployments is a plus.

Mar 2, 2026

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