Founding Fullstack Engineer

UseToday ApS; Berlin; Vor Ort; EUR 60.000 - 80.000; Vollzeit

Zusammenfassung

A pioneering Fintech startup in Berlin seeks a Founding Fullstack Engineer to architect and build core product features across a diverse tech stack, including AI and microservices. The ideal candidate has a proven track record in developing production-grade AI solutions, particularly in startups, with hands-on experience in Python, API integrations, and a strong entrepreneurial mindset. This position promises a competitive salary, along with significant equity opportunities, aiming to transform financial advice for thousands of customers.

Leistungen

Competitive salary

Significant equity

Fast-moving startup environment

Qualifikationen

• Proven track record of building and shipping production-grade AI products, particularly in a startup environment.
• Hands-on experience in Python (and/or Golang), Postgres (or MySQL), microservices, and modern infrastructure.
• Experienced in API integrations and can quickly adapt to new services.

Aufgaben

• Architect and build core product features across the technology stack.
• Design and implement scalable microservice architectures.
• Develop production-grade AI products and integrate various third-party APIs.

Kenntnisse

Python

API integrations

Golang

Postgres

LLMs prompt engineering

Voice AI

Audio ML

ReactJS

Jobbeschreibung

TODAY revolutionizes Financial Advice in insurance banking and investment by making advisors AI-native. Moreover TODAY is an AI-native company that works with unparalleled automation. Join our mission to deliver peace of mind at scale as our Founding Fullstack Engineer!

Tasks

• Architect build and own core product features across our entire stack from AI (various LLMs Voice AI VAPI Langfuse) Python (optionally Golang ) on the backend Postgres as a DB and Microsoft Azure for the infrastructure.
• Design and implement scalable microservice architectures on a modern infrastructure stack.
• Development of production-grade AI products including features driven by LLMs agents and advanced audio ML .
• Integrate a wide variety of third-party APIs to expand our platforms capabilities.
• Get hands-on with Voice AI building systems for audio analysis processing and implementing robust evaluation frameworks for evals and agent orchestration .
• Champion a security-first mindset ensuring the highest standards for data application and infrastructure security .
• Establish and drive a comprehensive testing culture from unit testing to contract and penetration testing.

Requirements

• You have a proven track record of building and shipping production-grade AI products especially in a startup environment.
• You possess rock-solid hands-on experience in Python (and / or Golang ) Postgres (or MySQL) microservices and modern infrastructure. ReactJS or Electron is a big plus too.
• You are experienced in API integrations and can quickly get up to speed with new services. MCP is a plus
• You have deep practical experience with LLMs prompt engineering evals. Voice AI and Audio ML is a significant plus.
• Experience building prod-grade agents ( agentic quoting ) for the memory and tooling challenges
• You are exceptionally driven with a strong entrepreneurial mindset and are excited by the prospect of being a founding member of the team.
• You are a pragmatic problem-solver who can translate complex requirements into robust scalable and secure technical solutions.

Benefits

Join our mission to deliver peace of mind at scale. Work with and learn from our Founder team that created over 1.5B in Fintech enterprise value and is driven to aim bigger this time. Join an extremely fast-moving AI startup thats transforming how thousands of customers experience financial advice.

In addition to a competitive salary we offer significant equity.

Include in your application a link demo or Loom of a production-grade AI FinTech High Traffic- or Big Data-oriented product or solution youve shipped.

Explain the architecture tech choices and trade-offs you faced particularly around AI / ML scalability reliability or security.

Ready to Shape the Future

Join us and deliver peace of mind at scale. Were excited to be working with you.