Senior Full Stack Developer, React/FastAPI/Django

mika AI

Senior Full Stack Developer focusing on frontend to enhance UX for financial management platform. Join a small team in Berlin or work remote, optimizing accounting software with AI.

Posted 8/2/2026full-timeBerlin • 🇩🇪 GermanySenior💰 €42,000 - €48,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building high-quality user interfaces using React, while effectively contributing to backend development with Python/FastAPI and Django. Proficient in utilizing AI-assisted engineering tools to enhance development workflows and ensure code quality.

Highest-signal resume keywords

React DevelopmentPython/FastAPI DevelopmentDjango DevelopmentAI-Assisted EngineeringUX Design

ATS Keywords

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Hard Skills

Software DevelopmentFull-Stack DevelopmentCode QualityArchitecture DecisionsSystems Thinking

Soft Skills

Attention to DetailProactive Problem Solving

Tools & Technologies

Claude CodeCursorCodexGitHub Copilot

Industry Keywords

Accounting PlatformUser InterfaceVisual QualityAccessibility

Tech Stack

Tools & technologies

DjangoPythonReact

About the role

Key responsibilities & impact

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
Contribute to code quality and architecture decisions in a small senior team

Requirements

What you’ll need

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.

Benefits

Comp & perks

Real autonomy and ownership from day one
Work that's genuinely hard and interesting
Competitive salary
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