ph3About Us /h3 pAt bNextlane /b, we don’t just develop software solutions – we bcreate the future /b of the automotive industry. /p pWe are a company that combines badvanced technology /b with a clear vision: bsimplifying and digitizing /b every step of the automotive customer journey, empowering manufacturers and dealerships to thrive in a constantly evolving market. /p pWe believe in the value of every team member, offering opportunities for you to bdevelop /b and contribute to meaningful solutions. /p pSo… What does it mean to be a #Nextlaner? /p ul liBe part of a bgrowth‑oriented culture /b. /li liCollaborate with bcolleagues from all over the world /b. /li liBelieve in bthe Power of ideas /b and the bdiversity of thought /b. /li liBe committed to provide an environment where you can blearn, grow, and collaborate /b on projects that make a global impact. /li /ul pOur success is measured not just by results, but also by the growth and satisfaction of those who are part of our company. /p pAt Nextlane, you’ll have the opportunity to binnovate /b, bpush boundaries /b, and bwork on solutions that are transforming /b the automotive world. /p pWe are looking for a Senior Backend Engineer with strong expertise in C#/.NET, cloud‑native backend development, and API engineering. /p pThis is a hands‑on engineering role focused on building scalable, secure, and maintainable backend services in cloud environments. The engineer will work closely with Tech Leads and cross‑functional teams to implement high‑quality solutions aligned with established architectural and engineering standards. /p pThis role is not a Tech Lead or Architect position. The expectation is strong technical execution, active contribution to engineering quality, support for architecture compliance, and ownership of backend deliverables. /p pAI‑assisted development practices are a core expectation for this role. Candidates should be comfortable using tools such as Cursor, Claude Code Codex, or similar within their daily engineering workflow. /p h3Your Responsibilities /h3 h3Backend Development /h3 ul liDesign, develop, and maintain backend services using C# and .NET Core. /li /ul ul liBuild secure, scalable, and high‑performance REST APIs. /li liImplement backend solutions aligned with approved architectural patterns and technical guidelines. /li liDevelop services capable of handling high concurrency and production‑scale workloads. /li liWrite optimized and maintainable database queries while ensuring data integrity and performance. /li liTroubleshoot and resolve backend and production issues efficiently. /li /ul h3Code Quality and Best Practices /h3 ul liWrite clean, maintainable, testable, and production‑ready code.



/li liApply SOLID principles and safeguard architectural practices such as Clean Architecture, Onion Architecture, Hexagonal Architecture, and Domain‑Driven Design (DDD). /li liImplement and maintain unit, integration, end‑to‑end, and performance/load tests. /li liParticipate actively in code reviews and engineering quality initiatives. /li liContribute to continuous improvement of development standards, tooling, and workflows. /li /ul h3Collaboration and Agile Development /h3 ul liWork closely with Tech Leads, frontend engineers, QA engineers, and DevOps engineers. /li liTranslate technical and business requirements into high‑quality implementations. /li liSupport architecture compliance and contribute to solution improvement discussions. /li liProvide technical guidance and support to less experienced engineers when needed. /li liParticipate actively in Agile ceremonies and team collaboration activities. /li /ul h3DevOps, Cloud and Architecture /h3 ul liWork with cloud platforms such as AWS, Azure, or GCP. /li liContainerize backend services using Docker. /li liContribute to CI/CD pipelines and automated deployment processes. /li liSupport observability and monitoring practices using logging, metrics, and tracing tools. /liliFollow security, reliability, and operational best practices in backend implementations. /li /ul h3Continuous Improvement /h3 ul liStay up to date with advancements in backend technologies. /li liPropose and implement improvements in system architecture and development workflows. /li liContribute to knowledge‑sharing initiatives and technical documentation. /li /ul h3What We’re Looking For /h3 h3Experience /h3 ul liA minimum of 6 years of experience in backend development. /li liExperience in developing and maintaining scalable backend services. /li liExperience writing and maintaining unit, integration and performance tests. /li liFamiliarity with Agile methodologies and DevOps practices. /li liHands‑on experience with GitHub Copilot, Cursor, Claude‑Code … configuration, rule management and use. /li liExperience working in cloud environments such as Azure, AWS, or Google Cloud Platform (GCP). /li /ul h3Languages /h3 ul liEnglish (Interview will be conducted in English) /li /ul h3Communication /h3 ul liStrong communication skills, both verbal and written.



/li /ul h3Technical Skills /h3 ul liStrong proficiency in C# and .NET Core /li liStrong experience designing and implementing REST APIs /li liStrong SQL and relational database experience /li liGood understanding of SOLID principles, design patterns, Clean Architecture, and Domain‑Driven Design (DDD) /li liExperience with Docker and CI/CD workflows /li liExperience working with cloud platforms (AWS, Azure, or GCP) /li liUnderstanding of scalable backend systems, observability, and reliability practices /li /ul h3AI Engineering /h3 ul liPractical experience using AI coding assistants in day‑to‑day software development (Cursor/Claude Code/Codex/Github Co‑pilot) /li liExperience configuring or working with AI‑assisted engineering workflows /li /ul h3Language Skills /h3 ul liFluent in English (mandatory). /li liFrench language proficiency is a plus. /li /ul h3Soft Skills /h3 ul liStrong analytical and problem‑solving abilities. /li liExcellent communication and collaboration in cross‑functional teams. /li liAbility to take ownership and drive initiatives to completion. /li /ul h3Interpersonal Skills /h3 ul liAbility to collaborate in a diverse and dynamic environment. /li /ul h3Our Recruitment Process /h3 ol li15‑minute introductory call with our Talent Acquisition Specialist. /li liInterview with the Hiring Team. /li liTechnical Interview. /li /ol h3What We Offer /h3 pWe understand that flexibility and trust are essential for our teams. Here are some of the benefits we offer: /p ul liRemote Work: Up to 3 days a week! /li liWork‑life balance: We have versátil entrance and departure time. /li liSummer schedule on Fridays: Start early your weekends! /li liReferral Bonus: €1500 for every talent you refer (after 6 months). /li liFlexible Remuneration: COBEE platform. /li liPrivate Medical Insurance: Adeslas. /li liContinuous Learning: Access to our internal platform for continuous development. /li liVacation: 23 vacation days plus an intensive schedule in July and August. /li liTeambuilding: Our afterworks and activities are memorable! /li /ul h3Diversity, Inclusion Belonging /h3 pAt 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. /p ul liSupport for people with disabilities. If you need any adjustments during the recruitment process, let us know so we can provide the best possible experience. /li liEqual opportunities for all: We welcome applications regardless of age, gender, origin, disability, or any other characteristic protected by law. /li /ul pJoin bNextlane /b and become part of the technological revolution in the automotive industry. /p pDiscover why we are a great place to develop your talent! /p /p #J-18808-Ljbffr

📌 Senior Backend Engineer (.NET, Cloud & APIs) (Madrid)
🏢 Jobtailor
📍 Madrid