(Senior) Full-Stack Engineer (all genders)

Ark Climate; München; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

EGYM Wellpass / Urban Sports Club

Bike leasing

30 days paid annual leave

Discounts on sustainability brands

Direct feedback and team events

Job summary

Ark Climate is seeking mid-level to senior software engineers to build AI-powered platforms for public administrations. You will work across frontend and backend using TypeScript, React, NestJS and PostgreSQL, turning unclear requirements into actionable tasks and delivering maintainable, secure software.

Senior candidates guide architecture and mentor teammates in a hands-on role. The role emphasizes collaboration with engineering, product and customer success, with opportunities to influence

Qualifications

• Shipped and maintained web applications across frontend and backend.
• Proficient with TypeScript, React, NestJS (Node.js) and PostgreSQL.
• Able to turn ambiguous requirements into manageable tasks, flag uncertainty early and seek feedback.
• Climate or GovTech experience is not required.

Responsibilities

• Own features end to end: from understanding the user problem to imple-mentation, release and iteration.
• Deliver reliable software: make pragmatic technical decisions, with security, tests and maintainability built in.
• Strengthen engineering: contribute through code reviews and improvements to our development workflow.

Skills

Ambiguity management

Frontend & backend

Problem solving

Tools

TypeScript

React

NestJS

Node.js

PostgreSQL

Cloud infrastructure

Kubernetes

CI/CD

Data pipelines

AI-powered features

Job description

Ark builds AI platforms for public administrations, starting with climate action and expanding into other administrative workflows. More than 60 cities, counties and states use our products, including Munich, Berlin and Schleswig-Holstein. We have won the German Startup Award 2026 and raised €2.4 million in pre-seed funding.

Tasks

Build tools for emissions analysis, cross-department project coordination and administrative automation. Work closely with engineering, product and customer success.

• Own features end to end: from understanding the user problem to imple-mentation, release and iteration.
• Deliver reliable software: make pragmatic technical decisions, with security, tests and maintainability built in.
• Strengthen engineering: contribute through code reviews and improvements to our development workflow.

We welcome mid-level and senior engineers. At senior level, you will also guide architectural decisions and mentor colleagues. This is a hands-on role, not a management position.

Requirements

• You have shipped and maintained web applications across frontend and backend.
• You work with TypeScript, React, NestJS (Node.js) and PostgreSQL.
• You turn ambiguous requirements into manageable tasks, flag uncertainty early and seek feedback.
• You want to improve public-sector work. Climate or GovTech experience is not required.

Nice to have: Cloud infrastructure, Kubernetes, CI/CD, data pipelines or AI-powered features.

• Influence on product direction and technical decisions.
• Salary based on experience and responsibility, plus virtual employee participation (VSOP).
• 30 days of paid annual leave.
• Direct feedback, shared learning and team events.
• EGYM Wellpass / Urban Sports Club membership, bike leasing and discounts on sustainability brands.

We can currently only hire candidates based in the EU or authorised to work here.

Ark is an equal opportunity employer. We welcome applicants of all backgrounds.