Fullstack Developer (.NET)

Nextlane; Madrid; Presencial; EUR 55.000 - 75.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Remote work up to 3 days a week

Flexible hours and Summer Fridays

Referral bonus €1500

COBEE platform remuneration

Private medical insurance

Continuous learning access

Vacation 23 days

Teambuilding events

Descripción de la vacante

Nextlane, a software company transforming the automotive industry, is looking for an experienced engineer to design, develop, and deliver complex features across our applications. You will build scalable backend services with .NET and frontend with React/Next, drive architectural decisions, and ensure quality through testing, CI/CD, and robust security.

With 4–5+ years of experience, strong English and Spanish, you’ll join a global team that values learning, collaboration, and measurable

Formación

• Experience developing backend services with .NET.
• Frontend experience with React/Next.
• Proven ability to build, maintain, and scale production applications.
• Strong knowledge of architecture, design patterns, and SOLID principles.
• Experience designing automated testing strategies (unit/integration/UI).
• Experience with CI/CD pipelines and automated deployments.
• Familiarity with Git workflows, code quality, and observability.
• Ability to evaluate architectural trade-offs for complex systems.

Responsabilidades

• 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 maintainability.
• Contribute to backend/frontend architecture, engineering standards, and practices.
• Collaborate with Product, Design, and Engineering to deliver outstanding user experiences.
• Lead complex functionalities and ensure applications are reliable, secure, and performant.
• Define and improve testing, release, and quality practices for safe delivery.
• Identify risks early and propose solutions to reduce complexity.
• Lead refactoring and modernization initiatives to improve code health.
• Mentor engineers through technical guidance and code reviews.

Conocimientos

Backend development

Frontend development

Software architecture

Testing strategies

CI/CD

Git workflows

Performance optimization

Problem solving

Mentoring

Cross-functional collaboration

Herramientas

NET

React

Next.js

Descripción del empleo

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:

1. Call with our Talent Acquisition Specialist.
2. Soft Skill interview with Hiring Manager
3. Technical Test
4. Technical Interview

What 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!