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Civil Engineer & Python Specialist - Freelance AI Trainer

Toloka AI

Contract|Remote|Remote — Porto, Porto District, Portugal

Toloka AI is looking for a freelance Civil Engineer & Python Specialist to support AI model training projects. This role is remote, with candidates expected to be based in Porto, Porto District, Portugal. Role overview This position combines civil engineering knowledge with Python programming to help improve AI systems. The work is project-based and allows f…

Apr 28, 2026

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Senior Backend Engineer - Remote/Hybrid (Portugal)

Sword Health

Full-time|Hybrid|Porto

Sword Health is revolutionizing the healthcare landscape by transitioning from a human-first to an AI-first model through its innovative AI Care platform. This groundbreaking approach ensures that world-class healthcare is accessible at any time and from anywhere, significantly lowering costs for payers, self-insured employers, national health systems, and other healthcare organizations. Since its inception, Sword has transformed pain management with AI at its core and has expanded its services to women's health, movement health, and more recently mental health. With over 700,000 members across three continents and 10 million AI sessions completed, Sword's 1,000+ enterprise clients have collectively saved over $1 billion in unnecessary healthcare expenses. Supported by 42 clinical studies and holding over 44 patents, Sword Health has successfully raised more than $500 million from top-tier investors, including Khosla Ventures, General Catalyst, Transformation Capital, and Founders Fund. Discover more at www.swordhealth.com.At Sword, we are reimagining healthcare by merging advanced AI/ML technology with personalized care solutions. As a Senior Backend Engineer on our AI Team, you will be integral in building, scaling, and optimizing the infrastructure that underpins our machine learning-powered clinical features, decision support systems, and forthcoming innovations in Generative AI.You will collaborate closely with cross-functional teams to ensure that Sword’s products are resilient, scalable, and secure, providing both internal and external users with effortless access to personalized, data-driven healthcare solutions.If you are a backend engineer passionate about exploring the depths of AI, this opportunity is tailored for you.

Feb 4, 2025

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Senior Prompt Engineer for Project Lion - Remote Opportunity

weloglobal

Part-time|Remote|Porto, Portugal

Join our innovative team at weloglobal as a Senior Prompt Engineer for Project Lion. In this exciting remote, part-time role, you will oversee the comprehensive technical migration process, seamlessly transitioning templates to LLM autoraters. Utilizing our client’s internal tools, you will apply advanced prompt engineering strategies to enhance model performance effectively.

Mar 16, 2026

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Optical Engineer with Python Expertise - Freelance AI Trainer

Mindrift

Part-time|$29/hr - $29/hr|Remote|Remote — Porto, Porto District, Portugal

Please submit your CV in English and specify your English proficiency level.Mindrift connects talented professionals with project-based AI opportunities for leading technology firms, focusing on the testing, evaluation, and enhancement of AI systems. This is a project-based opportunity, not permanent employment.Opportunity OverviewEach project presents distinct tasks, and contributors may be involved in:Designing original computational physics problems that mimic real-world physics research workflows;Creating challenges that require Python programming solutions (using libraries such as Numpy, SciPy, Sympy);Ensuring problems are computationally intensive, requiring considerable timeframes (days/weeks) for resolution;Developing scenarios that necessitate complex reasoning in mechanics, electromagnetism, thermodynamics, and quantum mechanics;Grounding problems in actual research challenges or practical applications within physics;Verifying solutions through Python and standard physics simulation libraries;Clearly documenting problem statements and providing verified accurate answers.Candidate ProfileThis role is ideal for optical engineers with Python experience who are interested in part-time, non-permanent projects. The perfect candidate will have:A degree in Physics (Theoretical, Experimental, or Computational) or a related field;Proficiency in Python for numerical validation. Familiarity with MATLAB, R, C, SQL, Numpy, Pandas, SciPy, or any programming language is also acceptable;A minimum of 2 years of professional experience, whether in applied work, research, or teaching;Experience with numerical simulation techniques;The capability to design problems that reflect real-world physics research workflows;Creative problem-solving skills across various areas of physics;Acquaintance with physics modeling and approximation methods;Strong command of written English (C1+).Process OverviewApply → Pass qualifications → Join a project → Complete tasks → Receive paymentProject Time CommitmentFor this position, tasks are expected to require approximately 10–20 hours per week during active phases, depending on project needs. This is an estimate, not a guaranteed workload, applicable only while the project is active.CompensationContributors can earn up to $29 per hour, depending on their level of expertise and contribution pace. Compensation varies across different projects based on scope, complexity, and required skills. Note that other projects on the platform may offer different payment rates based on their specific requirements.

Apr 30, 2026

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AI Workflow Engineer - Freelance AI Trainer

Mindrift

Part-time|$50/hr - $50/hr|Remote|Remote — Porto, Porto District, Portugal

Join the innovative team at Mindrift as an AI Workflow Engineer for the Tendem project (https://tendem.ai/). In this dynamic freelance role, you will develop cutting-edge automation systems utilizing Large Language Models (LLMs) within our unique AI + human collaborative environment.As an AI Pilot, you'll work alongside Tendem Agents to streamline repetitive tasks. Your skills in structured thinking, prompt engineering, and quality control will be pivotal in crafting scalable and reliable AI-driven workflows.This part-time, remote opportunity is perfect for professionals with a robust background in LLM integrations, prompt design, and AI automation systems.

May 2, 2026

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Freelance DevOps Engineer (Automation Systems) - AI Trainer

Mindrift

Contract|$50/hr - $50/hr|Remote|Remote — Porto, Porto District, Portugal

Mindrift is seeking talented DevOps / Automation Engineers (Infrastructure & Scaling) to join our innovative Tendem project (https://tendem.ai/), focused on constructing and sustaining scalable infrastructure for automation workflows in a hybrid AI + human environment.In this engaging role, referred to as an AI Pilot at Mindrift, you will work alongside Tendem Agents who manage repetitive tasks, while you lend your infrastructure expertise, ensuring system reliability and performance optimization to maintain stable and scalable automation pipelines.This flexible part-time remote position is perfect for professionals with hands-on experience in cloud infrastructure, system deployment, and managing high-load automation environments.What We DoThe Mindrift platform connects specialists with AI projects from leading tech innovators. Our mission is to harness the potential of Generative AI by integrating real-world expertise from around the globe.About the RoleThis freelance opportunity involves designing, deploying, and maintaining the infrastructure that supports automation workflows, guaranteeing system stability, scalability, and high availability across various environments.Key ResponsibilitiesDeploy and maintain self-hosted automation environments (e.g., n8n instances or similar systems).Design and manage infrastructure to support high-volume workflows and extensive data processing.Scale automation systems to accommodate concurrent workloads and performance-intensive tasks.Establish monitoring, logging, and alerting systems to oversee workflow performance and detect failures.Implement alerts for critical events (e.g., node failures, performance drops, system instability).Ensure system uptime, reliability, and fault tolerance across automation pipelines.

May 2, 2026

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Freelance AI Workflow Engineer at toloka-ai | Remote

toloka-ai

Part-time|$50/hr - $50/hr|Remote|Remote — Porto, Porto District, Portugal

toloka-ai seeks Freelance AI Workflow Engineers to help advance the Tendem project. This part-time, remote role focuses on building automation systems that blend large language models (LLMs) with human input. Work supports the development of intelligent workflows for content generation, communication, and process automation. Key responsibilities Design and improve workflows that use LLM APIs for generating content, automating tasks, and facilitating communication Collaborate with Tendem Agents who manage repetitive tasks, ensuring effective cooperation between AI systems and human contributors Apply structured thinking, prompt engineering, and quality assurance to deliver scalable, reliable AI-powered solutions Requirements Hands-on experience integrating LLMs and designing prompts Background in developing or refining AI-driven automation systems Ability to work independently as a remote freelancer Project context The Mindrift platform connects subject matter experts with AI projects from leading technology companies. Tendem aims to unlock Generative AI’s potential by combining global expertise with advanced tools. Location Remote , Porto, Porto District, Portugal

Apr 24, 2026

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Freelance Low-Code Automation Engineer - AI Training Specialist

Mindrift

Part-time|$50/hr - $50/hr|Remote|Remote — Porto, Porto District, Portugal

Role overview Mindrift seeks a Freelance Low-Code Automation Engineer to support the Tendem project. This part-time, remote role focuses on building and optimizing automation using Make.com, n8n, and JavaScript. Candidates may work from Porto, Portugal or fully remote. What you will do Design and implement automation workflows with low-code tools such as Make.com and n8n Extend and customize workflows using JavaScript when needed Work alongside Tendem Agents to automate and streamline repetitive tasks Develop reliable and scalable solutions by applying structured problem-solving Maintain high standards for quality and attention to detail in all workflow executions Who thrives in this role Those with hands-on experience in low-code automation platforms Engineers skilled at designing and refining workflow automations Individuals comfortable using JavaScript for custom automation logic People who prioritize quality, reliability, and clear processes The AI Pilot specialist At Mindrift, this specialist is called an "AI Pilot." AI Pilots work closely with human agents, ensuring smooth collaboration between automated systems and manual processes within a hybrid AI and human framework.

Apr 24, 2026

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Freelance Low-Code Automation Engineer - AI Training Specialist

Mindrift

Part-time|$50/hr - $50/hr|Remote|Remote — Porto, Porto District, Portugal

Mindrift is seeking talented Low-Code Automation Engineers proficient in Make.com, n8n, and JavaScript to join our innovative Tendem project. In this dynamic role, referred to as an AI Pilot at Mindrift, you will partner with Tendem Agents to streamline repetitive tasks while applying your automation expertise, analytical approach, and quality assurance to ensure efficient and scalable workflows across diverse systems.This part-time remote position is perfect for individuals with substantial experience in low-code automation platforms, workflow design, and JavaScript customization.About MindriftAt Mindrift, we connect industry specialists with cutting-edge AI projects from leading technology firms. Our goal is to harness the power of Generative AI by leveraging real-world expertise globally.Position OverviewThis freelance role focuses on the Tendem project. As a Low-Code Automation Engineer, you will be responsible for designing, developing, and refining sophisticated automation workflows across various platforms, guaranteeing reliable performance, scalability, and effective data management within integrated systems.Primary ResponsibilitiesDesign and assess intricate automation workflows spanning multiple business tools and platforms.Create and enhance workflows utilizing low-code platforms (Make.com, n8n), APIs, webhooks, and event-driven logic.Incorporate custom JavaScript within automation solutions to manage advanced logic, data transformations, and unique scenarios.Connect and synchronize data across systems such as Airtable, Google Sheets, Notion, CRMs, and more.Ensure dependable workflow execution through appropriate error handling, logging, and fallback strategies.Diagnose and enhance automation performance, minimize failures, and increase operational efficiency.Support the automation of communication and operational processes such as messaging, outreach, and notifications.CompensationContributors on this project can earn up to $50 per hour, based on their experience and contribution speed. Compensation may vary across projects depending on their scope, complexity, and expertise required. Other projects on the platform may offer different earning potentials.

May 2, 2026

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Lead Full Stack Engineer (Node.js, React/Vue & AI Solutions) at CoverGo

CoverGo

Full-time|Remote|Remote — Porto, Porto District, Portugal

Why Join CoverGo?Fully Remote Work EnvironmentDiverse International TeamInnovate with Cutting-Edge Technology in the Insurtech SectorAbout CoverGoCoverGo is on a mission to revolutionize the insurance industry by making insurance 100% digital and accessible to all. We are a premier global no-code insurance platform serving health, life, and property & casualty sectors.Recognized as Insurtech of the Year across Asia and recipient of numerous global accolades.Trusted by major enterprise clients including AXA, Bupa, MSIG, Dai-ichi, and Bank of China Group Insurance.Our vibrant team of over 120 professionals represents 30 nationalities, all working remotely from various parts of the world.Fully funded by esteemed venture capitalists and strategic institutional investors, enabling us to expand across Asia, EMEA, and the Americas.We have achieved a remarkable 30x growth in annualized revenue since January 2021.We prioritize fostering an inclusive workplace culture that embraces diverse thoughts and perspectives to enhance our work environment.Role OverviewAs the Lead Full Stack Engineer at CoverGo, you will be pivotal in shaping the technical direction and execution of our enterprise-grade insurance platform. This role encompasses hands-on full-stack development while also leading a talented team of engineers, mentoring peers, and spearheading the integration of AI technologies to advance our insurance solutions.You will guide architectural decisions, set development standards, and promote innovation throughout the platform, emphasizing scalable software design and continuous delivery. Your leadership will align technology initiatives with business objectives, creating impactful and intelligent solutions.Your ResponsibilitiesOversee the complete development lifecycle of our SaaS platform, from design and implementation to deployment and maintenance, ensuring alignment with both business goals and technical specifications.Provide technical guidance and mentorship to Full Stack Engineers, nurturing their growth through coaching and knowledge sharing.Define and implement the technical strategy for AI integration, collaborating closely with product and data teams to deliver AI-enhanced features that enhance automation and user experience.Research and assess new AI models, frameworks, and APIs such as OpenAI, Hugging Face, and Google AI, while managing the development of AI proof-of-concept projects to validate innovative concepts.Work closely with product managers, designers, and other stakeholders to deliver high-quality solutions.

Dec 11, 2025

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Security Analyst (Hybrid)

Nitro Software Inc.

Full-time|Hybrid|Porto, Portugal

About Us: Nitro is a global leader in providing seamless digital document workflows, offering an exceptional suite of solutions including PDF management, eSigning, identity verification, and analytics. Our customer success and change management team is second to none. With over 3 million licensed users and more than 13,000 business clients across 157 countries, we proudly serve 67% of the Fortune 500. How We Work: At Nitro, we strive to cultivate an environment that empowers talented individuals to thrive. Our collaborative spirit, innovative mindset, and engagement are paramount. Our work ethos is driven by five core principles: One team, One missionWe are united in our commitment to Nitro's mission, fostering a culture where every member feels valued. Own itWe take full ownership of our actions, empowering each other to lead with confidence and creativity. Accountable to our customersWe prioritize our customers, ensuring we fulfill our commitments with integrity. Excellence in executionPassion and precision drive us to deliver top-quality results consistently. Be bold, fail fast, learn fasterWe embrace learning through experimentation, daring to innovate and iterate towards improvement. These guiding principles shape our culture, inspiring everyone to contribute their best. The Role: We seek a proactive, detail-oriented, and collaborative Security Analyst specialized in Governance, Risk, and Compliance (GRC) to enhance and maintain Nitro's global security and compliance posture. This pivotal role is vital to ensuring ongoing compliance, integrating governance and control assurance into everyday operations. The ideal candidate will support the maturation of Nitro's key compliance programs, including ISO 27001, SOC 2, HIPAA, and DORA, and serve as the primary point of contact for our external compliance vendor.

Apr 13, 2026

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Commercial Consultant (m/f/d)

inovabusiness

Full-time|On-site|Matosinhos, Porto, Portugal

At INOVA+, we are a consultancy firm with over 25 years of experience in the market, dedicated to fostering organizational growth through innovation, international cooperation, digital transformation, and access to funding. With offices in four countries and a team of over 100 professionals, we are recognized for the excellence of our work in a highly competitive landscape.We firmly believe that the way we operate leads to enhanced efficiency, productivity, knowledge, and value for our clients and partners. We are on the lookout for exceptional talent to join our team—professionals eager to make a significant, positive, and proactive contribution. We are currently recruiting for a new talent to join us in Matosinhos, in the role of Commercial Consultant.Key Responsibilities:Conduct proactive outreach to identify new clients and business opportunities, focusing on the corporate sector;Schedule and participate in meetings with potential clients to showcase the company’s services and solutions;Contribute to campaigns defined by management to expand the client portfolio;Prepare customized commercial proposals that address each client's specific needs;Track and monitor the progress of business opportunities, ensuring follow-up until conversion;Maintain and update the client database and the company’s CRM, ensuring accurate and current information;Collaborate in the development of commercial materials to support the prospecting process.

Feb 23, 2026

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Course: Navigating the Product Life Cycle from a Product Owner Perspective

Mindera Education

Full-time|On-site|Porto, Porto District, Portugal

This comprehensive course offers a hands-on introduction to Product Management, covering the entire Product Life Cycle from Discovery to Delivery.Participants will gain the skills to utilize practical techniques in problem analysis, enhance user experience, prioritize tasks, define Minimum Viable Products (MVP), plan roadmaps, and implement Agile delivery methodologies.Additionally, the course includes insights into leveraging AI tools for product development, emphasizing real-world applications and modern workflows.

Mar 6, 2026

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Senior Data Solutions Architect

Mindera

Full-time|Remote|Remote — Porto, Porto District, Portugal

At Mindera, we firmly believe that software is crafted by people, for people, and that high-performance systems can significantly impact users around the globe. We are on the lookout for a Senior Data Solutions Architect to become a vital part of our agile, collaborative team, where your contributions are as valuable as your coding prowess.In this role, you will not merely manage infrastructure; you will serve as a technical partner, collaborating to create resilient, scalable systems that meet the demands of our clients.We hold empathy, self-organization, and a willingness to take calculated risks in high regard. If you are passionate about addressing intricate challenges and believe that sharing knowledge is a powerful learning tool, you will thrive in our environment.We seek an individual who enjoys building solutions, continuously learning, and mentoring others. Your role will involve close collaboration with our leadership team (CEO/COO) and our clients, making effective communication and a team-oriented mindset essential.Anticipated travel for this position, both nationally and internationally, will range between 0% and 15%, depending on project and organizational requirements.

Mar 19, 2026

PL/SQL Developer | Software Development at Devoteam | Porto

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