C

Senior Backend Engineer (m/w/d)

caronsale•Technology
BerlinFull-timeOn site3 weeks ago

Muslim-Friendly Workplace Features

  • Prayer room
filled = mentioned in the job postingoutlined = stated on the employer's website

Framework: Remote work possible

Features are hints taken from the job posting, not confirmed commitments.

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📄Stellenbeschreibung

You don't want another role where someone else owns the architecture and you own the tickets.

Here you pick the technology, design the architecture, and set the standards the backend runs on. 40,000 buyers, 20+ countries, 130,000 vehicles sold a year through one auction backend, and you decide how it scales.

Location: Central Berlin — hybrid, 3 days in the office and 2 days from home.

About us

CarOnSale is the AI-powered platform for B2B used car trading in Europe.

Over 40,000 buyers from more than 20 countries trade on our platform — and 85% of inventory is exclusive to us.

We connect software, pricing intelligence, logistics and financing in one layer — as the operating system for an entire industry.

One Platform. One Profit Engine.

Your responsibilities

You own backend development end to end: technology selection, architecture design, and implementation of the features that carry platform performance and scale
You build AI-first. Coding agents, LLMs and AI-assisted development are part of the daily workflow here, not a pilot project
You set the standards: code quality benchmarks, development practices and CI/CD pipelines, agreed cross-functionally and enforced in review
You mentor the engineers around you, share what you know, and raise the bar on backend practice
You challenge how we work. When our approach is wrong, you say so and you bring the better one

What you bring

8+ years in software engineering, 5+ of them focused on backend
Deep TypeScript proficiency, with strong Node.js, NestJS and PostgreSQL experience
A proven mentorship track record: you have coached engineers and raised the standard around you
Solid command of Git, Docker and CI/CD pipelines
Comfortable in Scrum or Kanban, working with JIRA and Confluence
English at C1 level, written and spoken, for daily work with an international team
AI-native working style: you use AI tools in your own development workflow and have real judgement about where they accelerate you and where they don't
Based in Berlin or ready to relocate

Nice to have

WebSockets or other real-time systems
Search frameworks such as Elasticsearch or Lucene
Automotive or B2B trading background
Conversational German

What to expect from us

Hybrid working: 3 days in office, 2 days remote – plus 25 "Work from Anywhere" days per year
28 days annual leave
2× annual career & development conversations
Company pension with 20% employer contribution
Fully paid Deutschlandticket (public transport)
FitX membership or Urban Sports Club subsidy
Virtual stock options — share in the upside
Modern IT setup for your day-to-day work
Structured onboarding with buddy programme and social events
Lived diversity: active women's network, meditation & prayer room

Apply now — your CV is enough.

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Job overview

Posted
16 September 2026
Location
Berlin
Employment type
Full-time
Work model
On site

Company

C

caronsale

Hamburg
View company profile
Source

This job listing was aggregated via Arbeitnow and is hosted on the original site.

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