Senior Backend Python Engineer

As a Senior Backend Python Developer, you will play a pivotal role in improving our backend infrastructure alongside a talented engineering team. You will leverage cutting-edge AI development tools while maintaining the highest standards of software engineering excellence. This position offers the opportunity to architect scalable solutions, mentor emerging talent, and drive technical innovation in a fast-paced, product-driven environment. Reporting directly to our VP of Data, you will collaborate closely with cross-functional teams to translate product requirements into robust, scalable backend solutions. Your partnership with the VP of Data will be central to designing effective data architectures and ensuring seamless integration between backend services and our data infrastructure. Your expertise in modern Python frameworks - combined with an AI-first engineering mindset - will be key to delivering high-quality solutions that evolve with our users' needs. Requirements Key Responsibilities: Technical Leadership & Backend Development Design and build scalable, maintainable backend services using Django, FastAPI, and related Python frameworks Collaborate with the Head of Data on data architecture and seamless data flow between backend and data infrastructure Drive system architecture decisions as part of our backend rebuild initiative Work with diverse storage technologies: PostgreSQL, MongoDB, OpenSearch, and optimize data modeling and access Implement robust API design and integrate effectively across microservices Use Docker, AWS, and related cloud tools to build resilient infrastructure AI-First Development Leverage AI development tools like Cursor, Claude Code, and MCP servers to accelerate delivery Maintain and refine Cursor rules and AI-assisted development configurations Promote best practices in AI-assisted coding while ensuring high code quality and security Stay on top of AI tooling trends and share insights across the team Cross-Functional Collaboration Work with product managers and the Head of Data to implement features from PRDs Ensure backend systems support data analytics, ML workflows, and reporting pipelines Participate in agile ceremonies: sprint planning, retrospectives, backlog refinement Translate business needs into user stories, epics, and technical specs Collaborate with frontend developers, designers, and other stakeholders to deliver cohesive product experiences Mentorship & Team Growth Mentor junior developers and provide technical guidance through code reviews and pair programming Foster a culture of high-quality engineering and continuous improvement Share knowledge on Python best practices and AI tooling Help define and evolve team standards and development processes Requirements Technical Expertise Proven experience of Python development, with strong command of Django and FastAPI Deep knowledge of PostgreSQL, MongoDB, SQLAlchemy, and Alembic Proficiency with Docker and cloud platforms (AWS preferred; Azure or GCP also valued) Experience designing distributed systems, REST APIs, and microservices Familiarity with Celery for task queues and OpenSearch/Elasticsearch AI Development Proficiency Experience with tools like Cursor, Claude Code, or other AI-assisted development platforms Familiarity with MCP servers and integrating AI into the dev workflow Ability to manage AI rules/configs while maintaining clean, secure codebases Product & Process Acumen Strong grasp of agile methodologies and product development cycles Comfortable interpreting PRDs and translating them into executable plans Skilled in writing clear user stories and collaborating with cross-functional teams Communication & Leadership Excellent verbal and written communication in English (Spanish is a plus) Proven ability to mentor junior developers and contribute to team culture Strong problem-solving skills and participation in technical decision-making Benefits Why Join Us: Join a culture that celebrates creativity and welcomes innovative, disruptive ideas, empowering you to make a real impact. Immerse yourself in a fast-paced, diverse workplace where you'll have the chance to collaborate and learn from specialists across various fields, fostering personal and professional growth. Embrace automation and seamless tech integration in your workflows, while our platform boosts operations through tech leverage, ensuring you stay ahead of the curve and updated with new technologies. Enjoy an attractive compensation package that recognizes your contributions and dedication to our shared success, rewarding you fairly for your hard work. Work in a comfortable, ergonomic environment within our spacious, modern offices located conveniently in the heart of Girona, just minutes away from the train station where you can enjoy daily fresh fruit and coffee Monthly afterworks organised by the company to unwind and strengthen team connections. Enjoy flexible entry hours that help you balance your personal life with your work commitments.