[Hiring] Senior Full Stack Developer @Get Mika GmbH

Role Description

We need a Senior Full-Stack Developer who leans frontend – someone who makes our product look and feel as good as it works under the hood. You'll own features end-to-end, thinking through the entire user flow, edge cases, error states, and architecture before you start building. You work with high autonomy and take real ownership – we trust you to make good decisions and deliver clean solutions.

• Drive frontend improvements – not just fixing bugs but proactively elevating UX and visual quality on a regular cadence.
• Build and own complex full-stack features in our accounting platform.
• Use Claude Code, Cursor, or similar AI engineering tools as your primary development workflow.
• Adapt and extend our Python/FastAPI & Django backend where needed (CRUD-level changes and beyond).
• Contribute to code quality and architecture decisions in a small senior team.

Qualifications

• Professional experience in software development with a proven track record of owning and delivering complex projects.
• Expertise in React to build high-quality, accessible, and production-ready user interfaces.
• A sharp eye for design that ensures layouts and components are implemented with pixel-perfect accuracy.
• Hands-on skill with AI-assisted engineering using tools like Cursor, Claude Code, Codex, or GitHub Copilot.
• The ability to work across the stack by independently navigating and extending a Python/FastAPI backend.
• A systems-thinking mindset to map out full features, edge cases, and failure modes before writing any code.
• Fluency in English, while any knowledge of German is a welcome bonus.

Requirements

• Background in agentic AI systems or LLM-powered products (nice to have).
• Familiarity with B2B fintech, PostgreSQL, or German accounting standards like DATEV (nice to have).

Benefits

• A small team of strong, senior engineers who respect each other's time.
• Real autonomy and ownership from day one.
• Work that's genuinely hard and interesting – German tax law + AI agents is not a solved problem.
• Competitive salary and a product that's actually used by real customers daily.
• Almost no meetings – on average 95% focus time per day.
• 100% Remote option, option to work abroad and no minimum required office attendance.
• Fully flexible working hours apart from Daily Standup.
• Berlin location preferred but remote possible.