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Babel Profiles Logo Babel Profiles · IT - Software Development

Senior Fullstack Engineer

Spain, Madrid 65000.00 - 78000.00 EUR / Year · Job Posted June 15, 2026
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Job Description

We are partnering with a global leader in the Legal Tech Sector that is reshaping the future of the industry! By integrating advanced AI and data analytics into one of the most comprehensive legal databases worldwide, our client enables professionals to work smarter and faster at scale. This is a unique opportunity to bring your expertise to a mission-driven, fast-moving organization with a real impact on the market. They are currently welcoming applications for their hubs in Madrid and Barcelona. As a Senior Full Stack Engineer, you will play a key role in building and scaling the core features that legal professionals around the world rely on daily. This is a Python-first position where your primary focus will be designing and implementing robust backend services. On the frontend, it is highly flexible: the client is welcome engineers with solid experience in modern technologies like React, JavaScript, or TypeScript, as long as you are comfortable contributing to a modern user experience. It’s the perfect match if you love backend architecture but want to maintain a strong grip on full-stack development.

Job Responsibility

  • Design, develop, and maintain scalable backend systems and APIs using technologies such as Python and Flask
  • Architect and optimize distributed services, ensuring performance, reliability, and maintainability across applications
  • Collaborate with frontend engineers, product managers, and designers to deliver robust, end-to-end web solutions
  • Build and maintain integrations with headless CMS platforms (e.g., Strapi), third-party services, and internal systems
  • Ensure high code quality through automated testing, code reviews, CI/CD pipelines, and engineering best practices
  • Monitor, troubleshoot, and resolve backend performance issues, system bottlenecks, and production incidents
  • Improve system scalability, security, and observability across cloud and containerized environments
  • Contribute to infrastructure and deployment workflows using Docker, Git, and CI/CD tools
  • Support frontend integration needs while maintaining a strong focus on backend architecture and service reliability

Requirements

  • 6+ years in backend and full-stack development
  • Strong Proficiency in Python
  • Experience designing and consuming REST APIs and working with microservices architectures
  • Proficiency in TypeScript, Lit, Angular, React or Javascript
  • Experience with Docker, Git, and CI/CD pipelines
  • Familiar with Core Web Vitals, Lighthouse, DevTools, and Unix systems
  • Strong debugging, testing, and performance optimization skills

Nice to have

  • Experience with Web Components and Strapi
  • Next.js, SSR, or SSG and background in legal or regulatory tech

What we offer

  • Competitive Salary of EUR 65,000 -78,000K
  • Hybrid model with lots of flexibility
  • Collaborative, multicultural team environment
  • Mental health and well-being support
  • Career growth, leadership mentoring, and ownership of core systems
  • Projects with real-world impact in the legal tech space
  • Access to innovative tools and a fast-paced, mission-driven environment
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