Senior Software Engineer (Node.js/Python)

PROJECT OVERVIEW

Our client builds some of the world's most powerful electric motorcycles — championship-winning bikes engineered to outperform traditional combustion engines. Based in Barcelona and growing fast, they're a category leader on a mission to make premium motorcycles more sustainable, cutting plastic and CO2 pollution without compromising on performance, design, or the emotional experience riders expect.

You'd be helping build the backend and AI systems powering this next stage of growth.

IN THIS ROLE, YOU WILL

You'll help build the web platform that powers the business end-to-end — a highly-integrated environment delivering consistent data and services across all systems, so the company can serve employees and customers at their best. It's an ambitious, fast-moving environment that will push you to learn and grow while helping the company accelerate toward category leadership.

• Code Ownership: Act as the main developer for the AI-based solutions at Stark, supporting AI engineers with operationalization of python-based AI tools into node.js and python backends.

• Strategic Innovation: Continuously explore faster, more reliable approaches to solving problems and reaching milestones.

• Team Collaboration: Foster an open, feedback-driven culture—listen, share insights, welcome criticism, and learn from mistakes together.

• Process Optimization: Proactively challenge existing workflows, propose enhancements, and celebrate team successes.

• Documentation & Communication: Maintain all technical documentation and conduct all team communication in English

WHAT YOU'LL DO

• Design, develop and maintain web services and APIs in Python/Node.js (or other specialized stacks).

• Enforce coding standards for clean, concise, stable, and extensible code.

• Troubleshoot, debug, and resolve production issues with urgency.

• Collaborate cross-functionally—with AI team, product owners, front-end teams, QA, DevOps, and external partners—to meet business objectives.

• Make high-level architecture decisions, balancing scalability, performance, and maintainability.

• Stay current on industry trends, evaluate new tools, and recommend product-level improvements.

• Serve as a mentor and role model for new and existing team members.

• Own and prioritize your technical backlog, ensuring transparency and alignment.

IF YOU HAVE

• 7 + years designing, building and operating production web services.

• Mastery of Computer Science fundamentals (Data structures, Algorithms, Complexity, Concurrency etc.)

• Strong background in Distributed Systems and the typically nuanced problems specific to this area of computation.

• Proficient with Node.js, TypeScript and at least one server framework (Express, NestJS, etc.).

• Experience creating and maintaining production-grade RESTful APIs; strong grasp of versioning, auth, rate limiting and pagination patterns.

• Proven expertise in scalable architecture patterns (microservices, event-driven systems, CQRS), containerization (Docker/Kubernetes) and CI/CD pipelines Stark Future SL Senior Backend Engineer

• Solid SQL skills (schema design, indexing, migrations, performance tuning) on PostgreSQL or MySQL

• Strong problem-solving skills

• Proficient in English

• Growth mindset: open to feedback, committed to continuous learning, documentation and knowledge sharing

NICE TO HAVE

• Hands-on experience deploying and operating services on AWS (Lambda, ECS/EKS, RDS, SQS, CloudWatch)

• Proficient with Python and Python server backends

• Experience with end-to-end technical projects: participating in architecture decisions, driving standards, and sharing knowledge

• Familiarity with a NoSQL option (e.g. MongoDB).

AS AN OPINOV8R, YOU WILL HAVE

• Digital-First Approach: Great talent knows no borders! You can work from wherever you are — we hire and collaborate with professionals worldwide.

• Remote Work Model: Balance your professional and personal life with our flexible working conditions, empowering you to deliver your best from anywhere.

• Exciting Projects: Dive into impactful projects across industries that challenge and spark creativity.

• Boost Your Expertise: Grow your career with continuous learning, development opportunities, and hands-on experience.

• Join the Best Team Ever: Collaborate with our diverse and cross-cultural team of passionate technologists and creative thinkers.

HOW’S THE HIRING PROCESS GOING

We strive to make our hiring process smooth and transparent to find the perfect match for both sides. Steps may differ depending on the role, but here’s what to expect:

• Initial Interview: If your background fits the role, we’ll invite you for an interview with a Talent Acquisition Specialist.

• Technical Interview: Depending on the position, you may complete a technical assessment or test task.

• Client Interview: This stage may consist of 2–3 rounds, which can include an introductory call with the hiring manager, an interview with the team, and a final call to discuss the results and share feedback.

• Offer: If everything goes well, we'll follow up with a job offer and next steps to join the team.