ppstrongAbout Us /strong /ppAt strongNextlane /strong, we don’t just develop software solutions – we strongcreate the future /strong of the automotive industry. /ppWe are a company that combines strongadvanced technology /strong with a clear vision: strongsimplifying and digitizing /strong every step of the automotive customer journey, empowering manufacturers and dealerships to thrive in a constantly evolving market. /ppWe believe in the value of every team member, offering opportunities for you to strongdevelop /strong and contribute to meaningful solutions. /ppSo… What does it mean to be a #Nextlaner? /pullipBe part of astrong growth-oriented culture /strong. /p /lilipCollaborate with strongcolleagues from all over the world. /strong /p /lilipBelieve in strongthe Power of ideas /strong and the strongdiversity of thought /strong. /p /lilipBe committed to provide an environment where you can stronglearn, grow, and collaborate /strong on projects that make a global impact. /p /li /ulpOur success is measured not just by results, but also by the growth and satisfaction of those who are part of our company. /ppAt Nextlane, you’ll have the opportunity to stronginnovate /strong, strongpush boundaries /strong, and strongwork on solutions that are transforming /strong the automotive world. /ppWe are looking for a Senior Backend Engineer with strong expertise in C#/.NET, cloud-native backend development, and API engineering. /pppThis 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 /pppThis 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 /pppAI-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 /ppstrongYour Responsibilities: /strong /ppAs a key member of the team, you will be responsible for: /ppstrongBackend Development /strong /pullipDesign, develop, and maintain backend services using C# and .NET Core. /p /li /ulp· Build secure, scalable, and high-performance REST APIs. /pp· Implement backend solutions aligned with approved architectural patterns and technical guidelines. /pp· Develop services capable of handling high concurrency and production-scale workloads. /pp· Write optimized and maintainable database queries while ensuring data integrity and performance. /pp· Troubleshoot and resolve backend and production issues efficiently. /ppstrongCode Quality and Best Practices /strong /pullipWrite clean, maintainable, testable, and production-ready code.



/p /li /ulp· Apply SOLID principles and safeguard architectural practices such as Clean Architecture, Onion Architecture, Hexagonal Architecture, and Domain-Driven Design (DDD). /pp· Implement and maintain: /ppo Unit tests /ppo Integration tests /ppo End-to-end tests /ppo Performance/load tests /pp· Participate actively in code reviews and engineering quality initiatives. /pp· Contribute to continuous improvement of development standards, tooling, and workflows. /ppstrongCollaboration and Agile Development /strong /pullipWork closely with Tech Leads, frontend engineers, QA engineers, and DevOps engineers /p /li /ulp· Translate technical and business requirements into high-quality implementations. /pp· Support architecture compliance and contribute to solution improvement discussions. /pp· Provide technical guidance and support to less experienced engineers when needed. /pp· Participate actively in Agile ceremonies and team collaboration activities. /ppstrongDevOps, Cloud and Architecture /strong /pullipWork with cloud platforms such as AWS, Azure, or GCP. /p /li /ulp· Containerize backend services using Docker. /pp· Contribute to CI/CD pipelines and automated deployment processes. /pp· Support observability and monitoring practices using logging, metrics, and tracing tools. /pp· Follow security, reliability, and operational best practices in backend implementations. /ppstrongContinuous Improvement /strong /pullipStay up to date with advancements in backend technologies. /p /lilipPropose and implement improvements in system architecture and development workflows. /p /li /ulpContribute to knowledge-sharing initiatives and technical documentation /ppstrongWhat We're Looking For: /strong /pullipstrongExperience: /strong /pullipA minimum of 6 years of experience in backend development. /p /lilipExperience in developing and maintaining scalable backend services. /p /lilipExperience writing and maintaining unit, integration and performance tests. /p /lilipFamiliarity with Agile methodologies and DevOps practices. /p /lilipHands-on experience with GitHub Copilot, Cursor, Claude-Code … configuration, rule management and use. /p /lilipExperience working in cloud environments such as Azure, AWS, or Google Cloud Platform (GCP). /p /li /ul /li /ulullipstrongLanguages: /strong English (Interview will be conducted in English) /p /lilipstrongCommunication: /strong Strong communication skills, both verbal and written. /p /lilipstrongTechnical Skills: /strong /pullipStrong proficiency in C# and .NET Core /p /lilipStrong experience designing and implementing REST APIs /p /lilipStrong SQL and relational database experience /p /lilipGood understanding of:



/pullipSOLID principles /p /lilipDesign patterns /p /lilipClean Architecture /p /lilipDomain-Driven Design (DDD) /p /li /ul /lilipExperience with Docker and CI/CD workflows /p /lilipExperience working with cloud platforms (AWS, Azure, or GCP) /p /lilipUnderstanding of scalable backend systems, observability, and reliability practices /p /li /ulullipstrongAI Engineering /strong /pullipPractical experience using AI coding assistants in day-to-day software development (Cursor/Claude Code/Codex/Github Co-pilot) /p /lilipExperience configuring or working with AI-assisted engineering workflows /p /li /ul /li /ulullipstrongLanguage Skills /strong /pullipFluent in English (mandatory). /p /lilipFrench language proficiency is a plus. /p /li /ul /li /ulullipstrongSoft Skills /strong /pullipStrong analytical and problem-solving abilities. /p /lilipExcellent communication and collaboration int cross-functional teams. /p /lilipAbility to take ownership and drive initiatives to completion. /p /li /ul /li /ul /li /ulullipstrongInterpersonal Skills: /strong Ability to collaborate in a diverse and dynamic environment. /p /li /ulpstrongOur Recruitment Process: /strong /pollipstrong15-minute introductory call /strong with our Talent Acquisition Specialist. /p /lilipInterview with the Hiring Team /p /lilipTechnical Interview /p /li /olpstrongWhat We Offer: /strong /ppWe understand that strongflexibility and trust /strong are essential for our teams. Here are some of the benefits we offer: /pullipstrong Remote Work: /strong Up to 3 days a week! /p /lilipstrongWork-life balance: /strong We have versátil entrance and departure time. /p /lilipstrongSummer schedule on Fridays: /strong Start early your weekends! /p /lilipstrong? Referral Bonus: /strong €1500 for every talent you refer (after 6 months). /p /lilipstrong Flexible Remuneration: /strong COBEE platform. /p /lilipstrong⚕️ Private Medical Insurance: /strong Adeslas. /p /lilipstrong Continuous Learning: /strong Access to our internal platform for continuous development. /p /lilipstrong Vacation: /strong 23 vacation days plus an intensive schedule in July and August. /p /lilipstrongTeambuilding: /strong Our afterworks and activities are memorable! /p /li /ulpstrongDiversity, Inclusion Belonging /strong /ppAt Nextlane, we are committed to creating a space where strongeveryone feels valued and respected /strong. We firmly believe that diversity in experiences and backgrounds strengthens our culture and drives innovation. /pullipstrongSupport for people with disabilities. /strong If you need any adjustments during the recruitment process, let us know so we can provide the best possible experience. /p /lilipstrongEqual opportunities for all: /strong We welcome applications regardless of age, gender, origin, disability, or any other characteristic protected by law. /p /li /ulpJoin strongNextlane /strong and become part of the technological revolution in the automotive industry. /ppDiscover why we are a great place to develop your talent! /p /p #J-18808-Ljbffr

📌 Senior.NET Backend Engineer — Cloud, APIs & AI (Madrid)
🏢 Nextlane
📍 Madrid