Senior Software Engineer (Node.js/Python)

Opinov8

23h • Remote

About The Position

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'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.

Requirements

• 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
• 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 Haves

• 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).

Responsibilities

• Act as the main developer for the AI-based solutions, supporting AI engineers with operationalization of python-based AI tools into node.js and python backends.
• Continuously explore faster, more reliable approaches to solving problems and reaching milestones.
• Foster an open, feedback-driven culture—listen, share insights, welcome criticism, and learn from mistakes together.
• Proactively challenge existing workflows, propose enhancements, and celebrate team successes.
• Maintain all technical documentation and conduct all team communication in English.
• 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.

Benefits

• Balance your professional and personal life with our flexible working conditions, empowering you to deliver your best from anywhere.
• Dive into impactful projects across industries that challenge and spark creativity.
• Grow your career with continuous learning, development opportunities, and hands-on experience.
• Collaborate with our diverse and cross-cultural team of passionate technologists and creative thinkers.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed