Fullstack Engineer - Fintech

We're setting new standards in corporate finance. With a focused team of 30 — one in four of us a former founder — we combine deep expertise in finance, data science and AI to build
THE
platform for deal & advisory teams, strategy departments, auditors and banks. We're one of the fastest-growing startups in the DACH-region and now scaling internationally. Our ambition is clear: to set the global standard.

• Ownership.You own your topics end to end, from idea to shipped.
• Strong opinions, loosely held.We argue hard about the right solution, then commit together.
• Simple beats clever.The simplest thing that solves the problem wins. We'd rather ship clear code than impressive code.
• Leave it better than you found it.Speed is a priority, but we don't trade it for technical debt that kills future velocity. We build simple, modular systems that are easy for the next person (or future you) to understand.
• Mistakes are a gift.We make mistakes and learn from them. The one thing we avoid is making the same one twice.
• Serious about the work, not about ourselves.We take our goals seriously, ourselves less so.

Small team, high bar
. You'll help shape how our product looks and behaves for corporate finance teams who use it every day — taking features from idea to production with motivation and ownership
of a founder. We're looking for someone with at least 2 years of professional experience. Your responsibilities will include:

• Challenge the 'why'behind a feature. You think about the edge cases of an M&A workflow and how a user will actually interact with data-heavy dashboards.
• Design and ship
  end-to-end features used by thousands of financial professionals
• Build backend services in
  Python
  and design
  clean, efficient APIs and data flows
  .
• Contribute to critical
  software design
  and architecture decisions
• Collaborate directly with clients and internal teams to
  understand needs
  and turn them into features
• Bring an
  eye for design and usability
  : you know what “good UI” feels like and how to get there.
• Maintain a clear overview of our systems, addressing technical debt while ensuring
  performance, accessibility, and long‑term scalability
  .
• Take
  ownership
  from concept to deployment, continuously improving our stack.

- to be successful in this role, you will need:

• We expect the
  motivation and ownership
  of a founder. You own problems end-to-end and care more about the user outcome than your ticket description.
• 2+ years
  of professional experience with proven track‑record designing & developingscalable and reliablesoftware.
• Technical fluency,including TS / React / Next.js and Tailwind CSS. You understand what’s happening "under the hood" of your framework and state management (Zustand/React Query).
• Proficiency in Python
  .
• Hands‑on experience working with SQL & No
  
  SQL
  Databases
  (e.g. PostgreSQL, MongoDB)
• Experience handling
  complex, data-heavy
  applications. You know how to keep things responsive when dealing with large datasets.
• You use
  AI/LLM tools
  to move faster, but you have the technical depth to audit their output and maintain high code quality. No "AI slop".
• You've built with
  LLMs in production
  — and know the difference between a demo and something users can actually rely on.
• Strong
  communication
  and structured
  problem-solving
  skills.
• Degree
  in CS, Math, Physics, or equivalent practical experience.

• Experience in
  fintech
  and
  data-intensive applications
• Experience optimizing
  application performance
  at both frontend (React/Next.js) and backend (Python/Databases) layers
• Founding-experience
  - entrepreneurial drive, resourcefulness, and comfort with ambiguity.
• Experience with
  big data technologies (e.g. Apache Spark) & data orchestration tools (e.g. Dagster)

• Responsibil…