Senior Software Engineer

🚀 Join our mission to revolutionize banking for everyone.Say farewell to the complexities of traditional banking.Initially starting as a prepaid card, our offerings have evolved significantly over the last decade in the UK. We now provide personal and business bank accounts, along with joint accounts, accounts for 16-17 year olds, a free kids account, and c…

Elevate Your Career with Zynga!At Zynga, we unite people through the joy of gaming. As a premier force in interactive entertainment and a distinguished label of Take-Two Interactive, our games have amassed over 6 billion downloads—bringing players from 175+ countries together through enjoyment, strategy, and a touch of friendly rivalry.Our exciting range of games includes everything from exhilarating casino experiences to grand strategy confrontations, challenging puzzles, and engaging social word games. Our beloved titles and recent releases encompass FarmVille™, Words With Friends™, Zynga Poker™, Game of Thrones Slots Casino™, Wizard of Oz Slots™, Hit it Rich! Slots™, Wonka Slots™, Top Eleven™, Toon Blast™, Empires & Puzzles™, Merge Dragons!™, CSR Racing™, Harry Potter: Puzzles & Spells™, Match Factory™, and Color Block Jam™—and many more!Founded in 2007 and headquartered in California, our teams stretch across North America, Europe, and Asia, collaboratively crafting unforgettable gaming adventures. Whether you’re strategizing, matching, or competing, Zynga is where entertainment converges with innovation—and where you can advance your career.Join us and immerse yourself in the world of play!Position Overview:We are in search of skilled software engineers to develop services for games that are cherished by millions of players daily worldwide. These services must be capable of scaling to accommodate high user traffic and be crafted with the utmost quality demanded by this competitive sector. We anticipate our developers to maintain cutting-edge technology while also contributing innovative ideas.What You’ll Do:Our backend applications utilize a variety of programming languages and technologies (Golang, PHP, AWS EC2, Kubernetes, etc.), so you should be enthusiastic about working with our legacy code, enhancing, maintaining, and continuously refactoring the backend of our games.Your role extends beyond just coding; you will collaborate with mobile developers, data analysts, and systems engineers to integrate your components, while also creating technical designs, documentation, and sharing knowledge, as well as training other team members.As a backend engineer, you will be integrated into our games team and work closely with game design, player experience, mobile, and other departments, participating in business decisions as part of our technology strategy.

Join cint as a Senior Software Engineer and play a vital role in shaping the future of our technology. In this dynamic position, you will be responsible for designing, developing, and maintaining high-performance software systems that enhance our products and services.We are looking for a passionate individual with a strong foundation in software engineering principles who is eager to collaborate within a team-oriented environment. Your contributions will directly impact our innovative solutions and drive the success of our company.

Join us at Fever, the premier tech platform dedicated to enhancing cultural and live entertainment experiences globally.Our mission is to democratize access to culture and entertainment. Utilizing our advanced technology and data-driven strategies, we are changing how audiences engage with live events. Every month, over 300 million individuals across more than 40 countries discover unforgettable experiences on our platform, while we empower event creators to innovate and grow their reach.We proudly collaborate with industry giants such as Netflix, F.C. Barcelona, and Primavera Sound, delivering internationally acclaimed experiences and backed by leading global investors. Impressive, isn’t it?To further our mission, we seek exceptional talent with a proactive mindset, eager to contribute to the future of entertainment. Are you ready to be part of this journey?The engineering team is the backbone of our user-friendly iOS and Android applications and website, responsible for developing, enhancing, and maintaining all Fever services, ensuring that users have outstanding experiences.About the RolePosition: Senior Software Engineer (Backend Platform)Location: SpainWe are looking for a highly skilled software developer with a proven track record of delivering exceptional results. A person who values code quality and emphasizes doing things correctly, not just completing tasks.Collaborate within an agile, cross-functional team alongside other talented software engineers and product designers.Develop production-quality code and implement solutions capable of handling significant traffic.Mentor team members through code reviews, architecture design sessions, and pair programming.Receive mentorship from colleagues in areas where you seek to grow.During your onboarding period, you will:Engage in a structured program designed to facilitate a smooth transition into your role.

About Thunes Thunes is revolutionizing the global money transfer landscape with its innovative Direct Global Network, enabling seamless real-time payments across over 130 countries and 80 currencies. Our network offers direct connections to more than 7 billion mobile wallets and bank accounts globally, alongside access to 15 billion cards through over 320 different payment methods including GCash, M-Pesa, Airtel, MTN, Orange, JazzCash, Easypaisa, AliPay, WeChat Pay, and many more. Thunes uniquely stands out with its expansive reach, advanced SmartX Treasury System, and robust Fortress Compliance Platform, providing network members with unparalleled speed, control, visibility, protection, and cost-effectiveness for real-time payments worldwide. Our prestigious clientele includes industry leaders such as Uber, Deliveroo, Grab, and WeChat, along with various fintechs, MTOs, PSPs, and banks. Headquartered in Singapore, Thunes operates in 14 global locations including Barcelona, Abidjan, Beijing, Dubai, Hong Kong, Johannesburg, London, Manila, Nairobi, Paris, Riyadh, San Francisco, and Shanghai. For more details, please visit: https://www.thunes.com/ Role Overview We are seeking a passionate Senior Software Engineer (Golang) to join our dynamic Engineering team in Barcelona. This role offers an exciting opportunity to work in the fast-paced FinTech sector, collaborating on a variety of projects and technologies within an innovative environment. The Engineering team is tasked with developing our core business products and deploying them efficiently. We design solutions, tools, and platforms that address business needs, focusing on provisioning, configuration, CI/CD, monitoring, SLA, performance, and uptime. Our meticulous approach ensures we closely collaborate with diverse stakeholders while managing millions of transactions and integrating numerous global partners.

Qualifyze GmbH, founded in 2019, provides digital solutions that help life sciences organizations manage supply chain compliance. The company connects manufacturers, suppliers, and a network of more than 250 auditors and quality experts. With over 4,500 audits delivered across 85 countries, Qualifyze supports more than 1,500 pharmaceutical and healthcare clients worldwide. Their platform offers a broad supplier network and analytics tools to help clients maintain quality standards and reduce supply chain risks. Role overview The Senior Software Quality Assurance Engineer joins the Engineering team in Barcelona. This position focuses on maintaining the quality and performance of Qualifyze’s web applications. The role leads QA activities, develops test strategies, and works closely with cross-functional teams to deliver reliable products. Deep knowledge of testing methods, tools, and best practices is important for guiding the testing process and supporting product stability. Key responsibilities Develop and execute detailed test plans and test cases for web applications. Identify, document, and track defects using bug tracking systems. Collaborate with developers, product managers, and UX/UI designers to understand requirements and maintain high-quality deliverables. Perform regression, functional, and performance testing. Work with Product Managers to define clear, testable acceptance criteria for new features and improvements.

Senior Staff React Engineer with TypeScript and AI ExpertiseAbout Us:Wizeline is a leading global technology solutions provider, specializing in AI-driven digital products and platforms. We collaborate with our clients to harness the power of data and artificial intelligence, streamlining market entry and catalyzing transformative business outcomes. As a vibrant community of innovators, we prioritize growth, collaboration, and meaningful impact.With the right talent and innovative ideas, we believe there are no limits to what we can accomplish.Are You the Right Fit?If this opportunity excites you, let's determine if you're the right candidate for this position: Key ResponsibilitiesGuide the architecture, design, and development of scalable, high-performance web applications using React and TypeScript.Formulate and implement the front-end technical strategy, ensuring it meets scalability, performance, and alignment with product and AI objectives.Engage closely with AI engineers, data scientists, designers, and product managers to craft intelligent, data-centric user experiences.Incorporate AI-powered components (e.g., chatbots, assistants, content generators, predictive UI) into contemporary web applications.Mentor fellow engineers, fostering excellence in coding practices, architectural decisions, and technical problem-solving.Establish and uphold standards for code quality, accessibility, performance optimization, and testing.Collaborate with backend and DevOps teams to enhance CI/CD pipelines and deployment processes.Continuously seek opportunities to integrate AI and automation to improve development workflows and user experiences. Essential Qualifications8+ years of professional software development experience, including at least 5+ years focused on React and TypeScript.Demonstrated experience in architecting and scaling enterprise-grade front-end applications.Knowledge of integrating AI technologies into web applications.

We are seeking a highly skilled Senior AI Engineer to join our innovative team at Sopra Steria. In this role, you will leverage your expertise in artificial intelligence to design, develop, and implement cutting-edge AI solutions. You will collaborate with cross-functional teams to enhance our product offerings and drive technological advancements.Your contributions will be paramount in shaping the future of AI at Sopra Steria, and you will have the opportunity to work remotely while connecting with a diverse group of professionals committed to excellence.

About Us:Are you ready to make a difference? Join our dynamic team and experience a workplace where work meets play!At Rover, we believe that every individual deserves the unconditional love of a pet. Our mission is to facilitate that experience through our innovative app and website, which connects pet parents with loving pet sitters and dog walkers across the US, Canada, and Europe. Since our inception in 2011, we have empowered a community of trusted pet care professionals to manage their own businesses with the support and security of a globally recognized company.Headquartered in Seattle, Washington, we collaborate closely with our teams in Barcelona, San Antonio, Spokane, and various remote locations. Our company has received accolades for being a premier workplace, including recognition in Seattle Business Magazine’s 100 Best Companies to Work For and Washington’s Best Workplaces in the Puget Sound Business Journal. As a fast-growing, agile organization, our leadership team comprises professionals from some of the most respected tech companies worldwide.At Rover, we cherish our pets as much as our people, and we are dedicated to creating a diverse, inclusive, and welcoming community for all pet lovers. This commitment starts with our employees and extends to the entire Rover community.This role is eligible for sponsorship and offers relocation assistance to Barcelona. This is a permanent, full-time position with a hybrid work model (office attendance required on Mondays and Thursdays at our Poblenou office in Barcelona).

Join our innovative team as a Senior Software Engineer, where you will be responsible for developing high-throughput services using technologies such as Node.js, TypeScript, Kotlin, or Java with frameworks like Spring Boot or Micronaut.You will leverage cutting-edge AI tools (e.g., GitHub Copilot, Cursor, Claude code) to streamline development processes and foster a culture of best practices within the team.Take ownership of the Software Development Life Cycle (SDLC) by utilizing Infrastructure as Code (IaC) with Terraform to implement blue-green deployments and manage preview environments.Engage in continuous performance tuning, profiling latency, cost, and overall system performance.Design and implement LLM-powered features and agents using LangChain or MCP-compliant frameworks, ensuring effective integration of retrieval, memory, and tool-use patterns.Promote clean code principles and domain-driven design while mentoring peers through constructive pull request reviews.Identify and propose solutions for scaling challenges, performance bottlenecks, and potential security vulnerabilities.

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.

Scopely is on the lookout for an enthusiastic Senior Software Engineer to join our innovative Playgami team in the vibrant city of Barcelona on a hybrid working model! At Scopely, we are passionate about our mission and encourage a culture of play in our workplace, collaborating with talented colleagues, and engaging deeply with our player communities. As a global team of gaming enthusiasts, we are dedicated to developing, publishing, and innovating in the mobile games industry, connecting millions of players worldwide every day. The Playgami team is on a quest to create the premier SaaS gaming platform, striving to develop exceptional products for game production, operation, and insights. We power numerous award-winning franchises that are beloved by millions across mobile, web, and PC platforms.

At Datavant, we are on a mission to revolutionize healthcare through data collaboration. Our innovative platform ensures that health data is secure, accessible, and actionable, enabling organizations from healthcare providers to life sciences companies to harness critical insights. As we build the future of health data connectivity, we focus on fulfilling individual patient requests and empowering the AI-driven transformation in healthcare.Join Us in Shaping the Future at the Datavant Life Sciences Tech Hub in Barcelona!We are excited to announce the expansion of our global footprint with the launch of our Life Sciences Tech Hub in Barcelona. We are looking for talented Data Engineers who are passionate about product development and making a real impact in healthcare technology.As a Data Engineer at Datavant, you will play a pivotal role in designing and building systems that ensure secure, privacy-preserving access to high-quality healthcare data. Your contributions will support pharmaceutical companies, biotech innovators, and research organizations, directly impacting the development of new therapies and the acceleration of clinical trials.We are committed to enabling every healthcare decision to be powered by the right data, at the right time, in the right format. We seek problem-solvers, innovators, and passionate individuals ready to drive transformative change in the healthcare landscape.

Role overview Cint seeks a Senior Software Engineer in Barcelona to join the Research and Development team. The focus is on designing and building software solutions that support data collection and market insights. Engineers in this group work closely to refine current systems and create new products. What you will do Work with colleagues to design, develop, and maintain software for data-driven products Improve existing platforms and help shape the architecture of new solutions Use technical skills to address complex challenges and advance technology for market research Location This position is based in Barcelona.

As a Senior Software Engineer II, you will play a pivotal role in developing innovative information systems by analyzing operational needs and creating software solutions. You will lead a dynamic team of developers tasked with building and maintaining both new and existing websites. Your expertise in software engineering, coupled with your ability to communicate effectively and prioritize tasks, will be key to your success in this role. We seek a creative engineer who balances quality with customer-focused solutions, capable of managing multiple responsibilities in a fast-paced environment.

Join Speechify as a Senior Software Engineer specializing in Windows and desktop applications. In this role, you will lead the design and development of innovative software solutions that enhance user experience and drive engagement. Your expertise will help shape our product offerings and contribute to the overall success of our applications.We are looking for a passionate engineer who thrives in a fast-paced environment, is eager to tackle challenging problems, and is committed to delivering high-quality software.

At Datavant, we are revolutionizing healthcare data collaboration. Our mission is to ensure that health data is secure, accessible, and actionable for organizations throughout the healthcare landscape, including providers, health plans, researchers, and life sciences companies. From assisting single patients with their medical records to spearheading the AI transformation in healthcare, our team, known as Datavanters, is at the forefront of how data is interconnected and utilized to enhance health outcomes.Become a Part of Our Vision at the Datavant Life Sciences Tech Hub in BarcelonaAs we expand our global presence with the establishment of our Life Sciences Tech Hub in Barcelona, we invite skilled technical professionals who are product-focused and impact-oriented to join us in shaping the future of healthcare technology.Our Life Sciences technology is pivotal in clinical research, real-world evidence generation, pharmacovigilance, and data collaboration across the healthcare ecosystem. As a Backend Engineer at our Life Sciences Tech Hub, you will architect and implement systems that facilitate secure, privacy-conscious access to high-quality healthcare data utilized by pharmaceutical companies, biotech innovators, and research organizations globally. Your contributions will be integral in developing new therapies, expediting clinical trials, and enhancing patient outcomes by ensuring that essential data is interoperable, scalable, and reliable.Careers at Datavant empower you to leverage your technical acumen and problem-solving abilities in pursuit of our mission: to ensure that every healthcare decision is informed by the right data, at the right time, in the right format. We are on the lookout for innovators, problem-solvers, and proactive individuals ready to drive change and build upon our success.

We are seeking a highly skilled and motivated Senior Software Engineer to join our dynamic team at Back Market, focusing on our PayOut and Fraud prevention systems. In this pivotal role, you will design, develop, and enhance software solutions that ensure secure and efficient payment processes while mitigating fraud risks.Your expertise will help us innovate and improve our systems, contributing to a robust and user-friendly experience for our customers. If you are passionate about software engineering and have a keen eye for security and efficiency, we want to hear from you!

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.

Join the cutting-edge AI Special Forces team at Darwin AI! We are seeking a driven and enthusiastic AI Engineer who is passionate about leveraging technology to provide exceptional support to our clients. This role is ideal for individuals who thrive on solving complex problems and have a keen interest in the intricacies of technology and artificial intelligence.As an AI Engineer, you will be at the forefront of client interactions, serving as the primary resource for resolving challenges related to AI agents and their integration with external systems. Your responsibilities will involve direct communication with clients to address inquiries, troubleshoot issues, and collaborate with internal teams including Customer Success, Onboarding, Product, and Engineering to ensure timely and comprehensive resolutions. Your contributions are vital in fostering strong client relationships and enhancing the overall Darwin AI experience.Key Responsibilities:Promptly respond to customer inquiries through WhatsApp, email, and Slack, ensuring high levels of satisfaction.Diagnose and resolve technical issues, particularly those involving AI behavior, configurations, and API integrations.Monitor alerts from internal tools and customer feedback on the Darwin platform to take necessary actions.Collaborate closely with Product and Engineering teams, escalating complex challenges and contributing to product enhancements.Maintain detailed documentation of support activities to ensure accurate tracking of issues and solutions.Identify recurring problems and assist in developing internal documentation and FAQs.Work alongside Customer Success and Onboarding teams to ensure a seamless client journey.Review AI conversations to uncover bugs or areas for improvement.Ensure all critical feedback and issues are addressed within the specified SLA.