Senior Backend Python Engineer

Fundcraft; Gerona; Híbrido; EUR 50.000 - 70.000; Jornada completa

Descripción de la vacante

A dynamic tech company in Girona is seeking a Senior Backend Python Developer to reshape its backend infrastructure. The ideal candidate will have at least 5 years of experience in Python, particularly with Django and FastAPI, and possess a deep understanding of both SQL and NoSQL databases. This role involves collaboration across teams and leading technical initiatives, all while fostering a culture of mentorship and innovation. Join us to make a significant impact in a flexible work environment.

Servicios

Attractive compensation package

Flexible entry hours

Monthly afterworks

Spacious, modern office environment

Daily fresh fruit and coffee

Formación

• 5+ years of Python development experience, mainly in Django and FastAPI.
• Deep knowledge of PostgreSQL, MongoDB, SQLAlchemy, and Alembic.
• Experience with Docker and cloud platforms, preferably AWS.
• Strong understanding of distributed systems, REST APIs, and microservices.

Responsabilidades

• Design and build scalable backend services using Django and FastAPI.
• Drive system architecture decisions as part of backend rebuild initiative.
• Collaborate on data architecture and seamless data flow.
• Mentor junior developers and conduct code reviews.
• Participate in agile ceremonies and translate business needs into user stories.

Conocimientos

Python development

Django

FastAPI

PostgreSQL

MongoDB

Docker

AWS

AI-assisted development tools

Herramientas

Cursor

Claude Code

MCP servers

Descripción del empleo

We’re looking for a Senior Backend Python Developer to help rebuild our backend infrastructure from the ground up, working closely with a high-caliber engineering team. In this role, you’ll apply cutting-edge AI development tools and best-in-class engineering practices to build scalable systems that support our growing platform.

You’ll collaborate with our VP of Product, Head of Data, and other cross-functional teams to turn product requirements into elegant, efficient backend solutions. You’ll play a key role in architecting systems, mentoring talent, and driving innovation in a fast-paced, product-first environment.

This position is based in Girona, Spain, with a hybrid work setup.

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

• 5+ years of Python development experience, 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

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.