Fullstack Developer (.NET)

Fullstack Developer (.NET) About Us At Nextlane , we don’t just develop software solutions – we create the future of the automotive industry. We are a company that combines advanced technology with a clear vision: simplifying and digitizing every step of the automotive customer journey, empowering manufacturers and dealerships to thrive in a constantly evolving market. We believe in the value of every team member, offering opportunities for you to develop and contribute to meaningful solutions. So… What does it mean to be a #Nextlaner? Be part of a growth-oriented culture . Collaborate with colleagues from all over the world. Believe in the Power of ideas and the diversity of thought . Be committed to provide an environment where you can learn, grow, and collaborate on projects that make a global impact. Our success is measured not just by results, but also by the growth and satisfaction of those who are part of our company. At Nextlane, you’ll have the opportunity to innovate , push boundaries , and work on solutions that are transforming the automotive world. Your Responsibilities: Own the design, development, and delivery of complex features and systems across our applications. Build scalable, maintainable, and high-quality solutions using .Net and React/Next. Drive technical decisions, balancing business needs, delivery timelines, performance, and long-term maintainability. Contribute to the evolution of our backend and frontend architecture, development practices, and engineering standards. Collaborate closely with Product, Design, and Engineering teams to deliver outstanding user experiences. Lead complex functionalities and ensure applications remain reliable, secure, and performant. Define and improve testing, release, and quality practices to ensure safe and predictable delivery. Identify technical risks early and propose solutions that reduce complexity and support future growth. Lead refactoring and modernization initiatives that improve the health of the codebase. Mentor other engineers through technical guidance, code reviews, and knowledge sharing. Act as a technical leader within the team, driving engineering excellence and helping raise the overall quality of our mobile platform. What We're Looking For: Experience: 4-5+ years Languages : English B2/C1 , Spanish Communication: Strong communication skills, both verbal and written ability to influence technical decisions constructively. Strong software engineering fundamentals, including architecture, design patterns, testing, and system design. Proven ability to deliver complex features with a high degree of ownership and autonomy. Experience making architectural decisions and evaluating technical trade-offs. Strong problem-solving skills and the ability to navigate ambiguity in complex systems. A quality-focused mindset with experience improving engineering practices and development processes. Experience mentoring engineers and collaborating effectively within cross-functional teams. A quality-focused mindset with experience improving engineering practices and development processes. Technical Skills: Strong professional experience developing backend services with .Net. Good experience developing frontend application on React/Next Proven experience building, maintaining, and scaling production applications Strong understanding of code architecture, design patterns, state management, asynchronous programming, and performance optimization. Understanding clean architecture and SOLID principles. Experience designing and implementing automated testing strategies, including unit, integration, and UI tests. Strong experience with CI/CD pipelines, automated deployments, and mobile release processes. Strong understanding of software engineering best practices, including code quality, maintainability, security, and observability. Experience working with Git-based development workflows and collaborative engineering practices. Familiarity with analytics, performance monitoring, and feature flagging solutions. Ability to evaluate technical trade-offs and contribute to architectural decisions across the mobile platform. Our Recruitment Process: Call with our Talent Acquisition Specialist. Soft Skill interview with Hiring Manager Technical Test Technical Interview What We Offer: We understand that flexibility and trust are essential for our teams. Here are some of the benefits we offer: 🏡 Remote Work: Up to 3 days a week! Work-life balance: We have flexible entrance and departure time. Summer schedule on Fridays: Start early your weekends! 🤝 Referral Bonus: €1500 for every talent you refer (after 6 months). 🍱 Flexible Remuneration: COBEE platform. ⚕️ Private Medical Insurance: Adeslas. 📚 Continuous Learning: Access to our internal platform for continuous development. 🌴 Vacation: 23 vacation days plus an intensive schedule in July and August. Teambuilding: Our afterworks and activities are memorable! Diversity, Inclusion & Belonging At Nextlane, we are committed to creating a space where everyone feels valued and respected . We firmly believe that diversity in experiences and backgrounds strengthens our culture and drives innovation. Support for people with disabilities. If you need any adjustments during the recruitment process, let us know so we can provide the best possible experience. Equal opportunities for all: We welcome applications regardless of age, gender, origin, disability, or any other characteristic protected by law. Join Nextlane and become part of the technological revolution in the automotive industry. Discover why we are a great place to develop your talent! Department Engineering Locations Spain - Madrid Remote status Hybrid About Nextlane At Nextlane, we connect every part of the automotive value chain—dealers, OEMs, dealer groups, and technology partners—through one open, secure, and smart platform for automotive retail software. Our platform removes fragmentation by unifying DMS and CRM workflows into one connected Sales and After-Sales ecosystem—ensuring consistent data, smoother integrations, and more efficient operations across sales, service, and back-office teams. AI is increasingly embedded across our solutions, enhancing how dealers and OEMs work every day. New AI-driven capabilities improve quality, automate routine tasks, and strengthen data accuracy—bringing more intelligence and speed to sales and after-sales processes. Built on a cloud-native architecture, the Nextlane Platform delivers the scalability, security, and performance modern dealerships and OEMs need. It connects our DMS and CRM solutions with OEM systems and third-party apps, ensuring compliance, uptime, and future-ready innovation. With 700 experts supporting 10,000 dealerships in 11 countries and integrating 60+ OEM brands, Nextlane is Europe’s largest connected automotive software platform—accelerating digital transformation and continuous operational improvement. Our growing Partner Ecosystem brings together leading third-party innovators to extend platform value—helping dealerships automate workflows, boost performance, enhance customer experiences, and stay ahead of industry change. Coworkers +700