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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack Engineer - **Company:** Shakers - **Location:** Valencia, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Cursor (Graphical User Interface Elements), DevOps, Payment Systems, Financial Software, Python (Programming Language), Node.Js, Software Engineering, ReactJS, Backend, AngularJS, Kubernetes, Front End Software Development, Docker - **Published:** August 19, 2026 - **Apply:** https://www.buscojobs.com.es/full-stack-engineer-en-valencia-ID-368385027 ## About the Role 5+ years of professional software development experience Strong hands-on experience across front-end (React or Angular) and back-end (Java, Python, Node.js or Go) Experience with high-volume or transactional systems Strong problem-solving skills Fluent English Availability for a hybrid model in Madrid (Retiro), 2 days/week onsiteNice to have Experience in FinTech, financial software or payment systems Experience mentoring developers or leading technical projects Familiarity with Docker, Kubernetes or DevOps practicesWhy this project Long-term engagement, not a short sprint Real ownership over core platform components, not a peripheral workstream Direct collaboration with the internal product, data and business teamsSounds like you, or like someone in your network? Reach out or share it along; happy to walk through the details#FullStackDeveloper #FinTech #SoftwareEngineering #Hybrid #Madrid #Freelance #Shakers ## Description Senior Full Stack Software Developer - FinTech PlatformAt Shakers, we're partnering with a company building a next-generation financial services platform to bring on a Senior Full Stack Software Developer.It's a hands-on role with real ownership over core systems, working two days a week from a Madrid office in Retiro.The challengeThe team is building out the core of a financial platform from the ground up: customer-facing portals, backend services, and the APIs that tie everything together.There's real ownership here, working closely with product, data and business stakeholders on architecture, security and performance decisions, while also reviewing code and mentoring less senior developers.Delivery speed matters, and the team leans on AI-assisted tooling (Copilot, Cursor, Claude Code) to move fast without cutting corners on quality.ResponsibilitiesDesign and build core modules of a financial services platformDevelop customer-facing portal experiences on the front endBuild and scale backend services and REST APIsContribute to architecture decisions and technical directionUphold security, performance and reliability standards across the stackPartner with product, data and business teams on deliveryReview code and support the growth of junior developersUse AI-assisted tools to accelerate development without compromising qualityRequirements5+ years of professional software development experienceStrong hands-on experience across front-end (React or Angular) and back-end (Java, Python, Node.js or Go)Experience with high-volume or transactional systemsStrong problem-solving skillsFluent EnglishAvailability for a hybrid model in Madrid (Retiro), 2 days/week onsiteNice to haveExperience in FinTech, financial software or payment systemsExperience mentoring developers or leading technical projectsFamiliarity with Docker, Kubernetes or DevOps practicesWhy this projectLong-term engagement, not a short sprintReal ownership over core platform components, not a peripheral workstreamDirect collaboration with the internal product, data and business teamsSounds like you, or like someone in your network?Reach out or share it along; happy to walk through the details#FullStackDeveloper #FinTech #SoftwareEngineering #Hybrid #Madrid #Freelance #Shakers ## Related Videos - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Stop using Node.js like in 2020! 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