Senior Fullstack Engineer

Overview A leading global fintech organisation is seeking a Fullstack Engineer to join their Madrid office, offering an exceptional opportunity to be one of the founding members of a new engineering team. The company is renowned for its comprehensive suite of products that empower businesses to trade and grow internationally, and you will play a pivotal part in shaping the future of these offerings.

What you'll do Collaborate closely with fellow engineers, sales professionals, data specialists, and other stakeholders to deliver high-quality solutions that address real customer needs.

Take full ownership of the products you build by embracing both their initial development and ongoing maintenance in line with the You build it, you own it philosophy.

Design, develop, and maintain complex web applications using modern programming languages and frameworks such as Python / Django, Node.js for backend and React / VueJS for frontend.

Establish robust APIs, integrate monitoring systems, set up alerting services, and ensure seamless integration with external systems to create reliable services.

Containerise code effectively while implementing monitoring and alerting mechanisms to guarantee service stability and performance.

Write testable code with comprehensive unit and integration test coverage to uphold high standards of quality across all deliverables.

Stay informed about emerging technologies, tools, and best practices within software engineering to continuously improve processes and outcomes.

Participate in on-call rotations when required to support critical systems and maintain operational excellence.

Contribute actively to open source projects internally and externally, following open source principles throughout your work.

Engage in regular communication with colleagues from diverse backgrounds by clearly articulating ideas in English both written and spoken.

What you bring Demonstrated experience building technology solutions for customer-facing or sales-oriented platforms within fast-evolving environments.

Solid understanding of basic algorithms as well as object-oriented and functional design principles alongside best-practice design patterns.

Bachelor's or Master's degree in Computer Science or related field—or equivalent hands-on experience gained through professional practice.

Proficiency in applying AI / ML techniques to solve customer problems is considered advantageous but not mandatory for this position.

Hands-on experience with Python3, Django framework, PostgreSQL databases, Redis caching systems, RESTful APIs or similar modern programming languages / frameworks.

Familiarity with Linux operating systems coupled with practical knowledge of cloud infrastructure management including networking fundamentals.

Ability to write testable code supported by thorough unit tests and integration tests ensuring reliability across all features delivered.

Competence in SQL querying; experience with BigQuery or comparable data analysis tools would be beneficial for handling large datasets efficiently.

Exceptional communication skills enabling clear articulation of technical concepts both verbally and in writing—especially important when working alongside international colleagues.

A collaborative mindset paired with strong interpersonal skills that promote knowledge sharing within diverse teams.

Advanced English.

What's next If you are ready to make a meaningful impact on global fintech innovation while growing alongside passionate colleagues—this is your moment!

Location : Madrid

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