Description review
Backend Engineer (Node.js / TypeScript)
Nexoya · Berlin · back to the listing
HR standards
77/100
solid
Title ↔ description
92/100
strong
Reads as
Backend Engineer
100% confident
What this role officially is
software developer — ESCO, the EU occupation classification
Software developers implement or program all kinds of software systems based on specifications and designs by using programming languages, tools, and platforms.
Also known as: application developer, application programmer, solutions developer, programmer, software specialist, application software developer
How others title the same work
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What the listing never says
- 23 bullet points. Long requirement lists deter qualified candidates, who read them as hard gates. Scope clarity
- No pay range published. Candidates cannot tell whether applying is worth their time. Pay transparency
The listing, marked up
Nothing in the wording of this listing tripped a check. The scores above still judge how complete and coherent it is.
About Nexoya
We help marketing teams unlock their growth potential with AI. Our attribution shows how advertising investments perform across channels, and our optimizations shift budgets to where they drive the bottom line. Leading European brands in e-commerce, telco, banking, insurance, energy and more rely on us.
The role
You build and run the Node.js/TypeScript services behind the Nexoya app: the GraphQL API, ad channel integrations and data ingestion, and new LLM- and agent-based features. You join a team of about 10 engineers across backend, ML, frontend and platform, and you own your features from design to production.
How we build software
AI coding agents change how software gets built, but not who is responsible for it.
• Decisions are made together. Important technical decisions start as an Architecture Decision Record reviewed by the team. Good arguments win, not seniority.
• Engineers design, agents implement. Your design is the input for our coding agents, guided by a shared rule set in our agent harness that the team evolves together.
• Working is not done. Code is ready when it is maintainable: readable, tested, robust on unhappy paths. Larger changes are reviewed, so at least two engineers know every change.
• You build it, you run it. A rotating internal support duty shows us which decisions worked.
What you will do
• Ship backend features end to end on our Kubernetes-based Azure cloud.
• Evolve our GraphQL API with clear schemas and stable contracts.
• Build reliable ad channel integrations and data ingestion with MySQL and RabbitMQ.
• Build AI features such as our in-app assistant (tool calling, retrieval, structured outputs), with evaluation, monitoring and guardrails.
• Help evolve our agent harness and raise the bar for tests, reviews and documentation.
What you bring
• [3+] years as a Backend Engineer with Node.js and TypeScript.
• Solid API design (GraphQL or REST) and MySQL experience.
• Experience with message brokers and running services on Docker, Kubernetes and a major cloud (Azure preferred).
• You enjoy discussing design trade-offs in writing and care about code others can maintain.
• Fluent English.
Bonus: ad platform APIs (Google Ads, Meta) or attribution; AI or agent features in production (Anthropic/OpenAI APIs, MCP, RAG); LLM evaluation or observability; team use of Claude Code or similar; data pipelines; German.
What we offer
• Direct impact on how enterprise marketers allocate their budgets.
• Real ownership in a team that takes engineering quality seriously.
• A genuine AI-first culture: experiment, automate, share.
• A transparent culture at eye level, with regular team events.
• Strategy Days twice a year where the whole team shapes company strategy (past: Helsinki, Berlin, Belgrade, Swiss Alps, Zurich).
Application process
• Profile review and phone screen
• Take-home assignment: a backend feature
• Technical discussion with the engineering team
• [On-site] interview and team evaluation
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We help marketing teams unlock their growth potential with AI. Our attribution shows how advertising investments perform across channels, and our optimizations shift budgets to where they drive the bottom line. Leading European brands in e-commerce, telco, banking, insurance, energy and more rely on us.
The role
You build and run the Node.js/TypeScript services behind the Nexoya app: the GraphQL API, ad channel integrations and data ingestion, and new LLM- and agent-based features. You join a team of about 10 engineers across backend, ML, frontend and platform, and you own your features from design to production.
How we build software
AI coding agents change how software gets built, but not who is responsible for it.
• Decisions are made together. Important technical decisions start as an Architecture Decision Record reviewed by the team. Good arguments win, not seniority.
• Engineers design, agents implement. Your design is the input for our coding agents, guided by a shared rule set in our agent harness that the team evolves together.
• Working is not done. Code is ready when it is maintainable: readable, tested, robust on unhappy paths. Larger changes are reviewed, so at least two engineers know every change.
• You build it, you run it. A rotating internal support duty shows us which decisions worked.
What you will do
• Ship backend features end to end on our Kubernetes-based Azure cloud.
• Evolve our GraphQL API with clear schemas and stable contracts.
• Build reliable ad channel integrations and data ingestion with MySQL and RabbitMQ.
• Build AI features such as our in-app assistant (tool calling, retrieval, structured outputs), with evaluation, monitoring and guardrails.
• Help evolve our agent harness and raise the bar for tests, reviews and documentation.
What you bring
• [3+] years as a Backend Engineer with Node.js and TypeScript.
• Solid API design (GraphQL or REST) and MySQL experience.
• Experience with message brokers and running services on Docker, Kubernetes and a major cloud (Azure preferred).
• You enjoy discussing design trade-offs in writing and care about code others can maintain.
• Fluent English.
Bonus: ad platform APIs (Google Ads, Meta) or attribution; AI or agent features in production (Anthropic/OpenAI APIs, MCP, RAG); LLM evaluation or observability; team use of Claude Code or similar; data pipelines; German.
What we offer
• Direct impact on how enterprise marketers allocate their budgets.
• Real ownership in a team that takes engineering quality seriously.
• A genuine AI-first culture: experiment, automate, share.
• A transparent culture at eye level, with regular team events.
• Strategy Days twice a year where the whole team shapes company strategy (past: Helsinki, Berlin, Belgrade, Swiss Alps, Zurich).
Application process
• Profile review and phone screen
• Take-home assignment: a backend feature
• Technical discussion with the engineering team
• [On-site] interview and team evaluation
Find Jobs in Germany on Arbeitnow