Introduction

CarOnSale is a start-up in the heart of Berlin. As a tech company, we have made it our mission to revolutionise the automotive trade across Europe. Join us on this exciting, fast-paced and high-growth journey as we develop innovative and class-leading solutions for the B2B sector.

We are looking for a motivated and ambitious Mid-Level Fullstack Engineer to join our cross-functional Logistics, Payment & Invoicing engineering team in Berlin.

Your Mission

• Collaborate closely with product and design to deliver impactful features and improvements across frontend and backend
• Take ownership of fullstack tasks, from implementation to testing, deployment, and maintenance
• Build and improve user-facing applications in Angular and backend services in Node.js/TypeScript
• Write clean, maintainable, and well-tested code with a focus on reliability and performance
• Contribute to integrations with external providers (e.g., payment services like Stripe)
• Actively participate in team discussions, technical planning, and agile ceremonies
• Share knowledge with peers and be open to learning from more senior engineers

You’ll work alongside senior engineers, gain exposure to complex systems, and develop both your technical and product understanding in a high-growth startup environment.

• Share knowledge with peers and support junior engineers when opportunities arise
• Learn from more senior teammates and grow your technical and product understanding
• Contribute to our backend systems and help us improve integrations with external services like payment providers (e.g., Stripe)

Your profile

Your Profile

• Around 3+ years of professional experience as a Fullstack or Frontend/Backend Engineer
• Strong hands-on experience with Angular (modern versions, ideally Angular 15+)
• Solid skills in TypeScript and Node.js (NestJS experience is a plus)
• Familiar with relational databases (e.g., PostgreSQL)
• Comfortable switching between frontend and backend tasks
• Familiar with agile practices (Scrum/Kanban) and tools like Jira and Confluence
• Curious, proactive, and eager to grow into a more senior position over time
• Excellent communication skills in English

Nice to have:

• Experience with payment, invoicing, or logistics systems
• Interest in the automotive industry

This is a mid-level role with plenty of room to grow.

Your profile

• You have at least 3+ years of hands-on experience in backend engineering roles
• You’re comfortable working in a team-oriented environment and collaborating across teams
• You write TypeScript fluently and have worked with technologies such as Node.js, NestJS, and PostgreSQL
• You’re familiar with agile practices like Scrum or Kanban, and tools like Jira and Confluence
• You’re proactive, curious, and enjoy taking ownership of your work
• You have excellent English communication and relationship building skills
• Nice to have: You’ve had some exposure to Logistics systems / environments

We offer

Location: Berlin (Hybrid)