Senior Full Stack Developer ReactFastAPIDjango (Frontend-Affinity) (mfd)
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Monthly Salary:
Posted on:
3 hours ago
Vacancies:
1 Vacancy
Job Summary
mika is revolutionizing financial management for small businesses with an AI-powered platform that combines automated accounting proactive insights and conversational AI. Were on a mission to make expert financial navigation and compliance accessible to every small business owner dramatically reducing costs and bureaucratic burden. Were a small senior team shipping fast and every line of code we ship matters.
Our stack: FastAPI & Django backend React frontend (Material UI react-query) PostgreSQL AWS. We build agentic AI systems that do real accounting work.
Tasks
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.
Youll own features end-to-end. That means you think 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.
Concretely youll:
- 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 we are a senior team where everyone writes high-quality code at a high pace and this is only possible through the use of the latest coding tools. Youll get access to all the subscriptions you need to work efficiently
- 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
Requirements
- 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. You have already built real things with those tools.
- 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.
Nice to have:
- Background in agentic AI systems or LLM-powered products.
- Familiarity with B2B fintech PostgreSQL or German accounting standards like DATEV.
Benefits
- A small team of strong senior engineers who respect each others time.
- Real autonomy and ownership from day one.
- Work thats genuinely hard and interesting German tax law AI agents is not a solved problem.
- Competitive salary and a product thats 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 attendence.
- Fully flexible working hours apart from Daily Standup.
- Berlin location preferred but remote possible.
Key Skills
- APIs
- REST
- Spring
- SOAP
- .NET
- React
- Node.js
- Angular
- J2EE
- JavaScript
- Web Services
- Java
About Company
At mika were not just accounting experts - were entrepreneurs just like you. Our founder Agnieszka started mika because she experienced firsthand how time-consuming and frustrating accounting and tax processes can be. She has been through the journey of a small business with all its u ... View more
