Senior Full Stack Developer React/FastAPI/Django (Frontend-Affinity) (m/f/d)

mika is revolutionizing financial management for small businesses with an AI-powered platform that combines automated accounting, proactive insights, and conversational AI. We're on a mission to make expert financial navigation and compliance accessible to every small business owner – dramatically reducing costs and bureaucratic burden. We're 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.

You'll 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, you'll:

• 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. You'll 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 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 attendence.
• Fully flexible working hours apart from Daily Standup.
• Berlin location preferred but remote possible.

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Position Details

• Job Title: Senior Full Stack Developer React/FastAPI/Django (Frontend-Affinity) (m/f/d)
• Company / Organisation: Get Mika
• Location: Remote
• Employment Type: Full-time
• Field / Industry: Software Development
• Work Arrangement: Remote — open to candidates worldwide

About This Opportunity

This full-time opportunity at Get Mika is an excellent opening for experienced professionals in the field of software engineering and technology. The role is structured around a fully remote setup — offering you the freedom to work from any location in the world and is designed for candidates who are ready to make a meaningful contribution from the moment they join.

As a remote-first position, this role welcomes qualified candidates from across the globe. You will be expected to manage your schedule independently, communicate proactively, and deliver results consistently — hallmarks of a high-performing remote professional.

Whether you are an established practitioner in software engineering and technology or a highly skilled professional looking for your next challenge, this Senior Full Stack Developer React/FastAPI/Django (Frontend-Affinity) (m/f/d) role offers the platform to apply your expertise in a real-world, results-oriented environment. Get Mika is looking for a candidate who can hit the ground running and add genuine value to the team.

Who Should Apply

This role is ideal for candidates who have a solid background in software engineering and technology and a demonstrable track record of delivering high-quality results. You should possess analytical thinking, attention to technical detail, and a methodical approach to problem-solving. Experience working with modern development tools, version control systems, and cloud platforms will be an advantage, though a commitment to continuous learning and professional development is equally valued.

Beyond technical or domain expertise, Get Mika is looking for someone who communicates clearly, collaborates effectively with colleagues and stakeholders, and takes ownership of their work from start to finish. If you thrive in a professional environment and are passionate about the opportunity to build reliable, scalable, and high-performing digital products, we encourage you to apply.

Key Competencies for This Role

Successful candidates for the Senior Full Stack Developer React/FastAPI/Django (Frontend-Affinity) (m/f/d) position at Get Mika will typically demonstrate the following core competencies:

• Domain expertise — a strong foundation of knowledge and hands-on experience in software engineering and technology
• Problem-solving ability — the capacity to identify challenges, think critically, and implement practical solutions efficiently
• Communication skills — clear and professional communication with colleagues, stakeholders, and partners at all levels
• Self-management — strong time management and the ability to prioritise a varied workload while meeting deadlines
• Team collaboration — a collaborative and supportive approach to working alongside colleagues across departments or locations
• Adaptability — the ability to respond positively to change and thrive in a dynamic, evolving work environment

How to Apply

To apply for this Senior Full Stack Developer React/FastAPI/Django (Frontend-Affinity) (m/f/d) position at Get Mika, click the "Apply Now" button on this page. You will be taken directly to the official application page where you can complete and submit your application.

Before applying, please ensure that your CV or résumé is fully up to date and clearly highlights your experience and accomplishments in software engineering and technology. If a cover letter is included or requested, tailor it specifically to this role and explain how your background, skills, and goals align with what Get Mika is looking for in a Senior Full Stack Developer React/FastAPI/Django (Frontend-Affinity) (m/f/d).

All applications for this role are processed directly by Get Mika. Career Nest facilitates the job discovery process and does not pre-screen or forward applications on behalf of employers. There are no fees for job seekers at any stage of the application process.

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