Lead Full Stack Software Engineer

About the client: Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead Full Stack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers.

• Build & Evolve Critical Systems.
• Rethink and reshape core workflows based on a deep understanding of auto repossession and remarketing processes.
• Design and implement scalable, resilient systems using modern architectural principles: clear service boundaries, modularity, and observability.
• Incorporate LLMs and AI-driven components to improve data validation, document processing, and operational decision-making.
• Use AI-assisted and agentic coding tools to accelerate development—while maintaining high standards for correctness, security, and maintainability.
• Own Architecture & Technical Decisions.
• Drive architectural discussions and decisions, balancing pragmatism with technical excellence.
• Set and enforce high-quality bars for new services and modules, with a focus on testability, performance, and reliability.
• Identify and reduce technical debt in ways that measurably improve developer velocity and system robustness.
• Work across the full software lifecycle: design, build, deploy, operate, and iterate.
• Embrace a 'you build it, you own it' DevOps mindset alongside your team.
• Make thoughtful trade-offs between effort, quality, and user value—always with accountability for outcomes.
• Work closely with product managers, designers, and other engineers in an agile, cross-functional team.
• Contribute ideas, challenge assumptions, and continuously improve how we build software.
• Mentor and support other engineers through code reviews, design discussions, and technical leadership.

• A Lead (7+ years of experience) engineer who owns results, not just implementations.
• Someone who enjoys complex problem-solving and isn’t afraid of legacy systems—or changing them.
• Strong engineering fundamentals: clean code, testing discipline, system design, and performance awareness.
• Strong experience with TypeScript and modern React / Next.js.
• Strong experience building production systems with .NET (Core / modern .NET preferred).
• Strong experience building production systems with C#.
• Comfort operating in production environments and learning from real-world feedback.
• A builder’s mindset: If you can think it, you can build it. If you build it, you own it.
• Strong must experience leveraging AI, Generative AI (GenAI) to enhance engineering productivity, automate repetitive tasks, and optimize workflows.

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings