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Senior Fullstack Engineer
AI, Backend, Infrastructure
Location
Remote, Germany
Work type
Remote
Employment
Full Time
Experience
5-8 years
Compensation
Compensation not disclosed
Posted
16h ago
Summary and responsibilities
Role overview
Summary
This Senior Fullstack Engineer will architect, build, and own core product features across the entire stack, focusing on AI, backend, and infrastructure. The role involves developing production-grade AI products, integrating third-party APIs, and championing security and testing cultures within a fast-moving AI startup.
If terms such as Voice AI, workflow automation, real-time analysis, and assistance are what you're passionate about, we want to hear from you.
Tasks
Architect, build, and own core product features across our entire stack, from AI (Voice AI, STT, TTS, Microsoft Foundry, MCP, Deep Agents, LangChain, Langfuse) to Python (optionally Golang and/or TypeScript), Postgres, and Microsoft Azure infrastructure.
Design and implement scalable microservice architectures on a modern infrastructure stack.
Develop production-grade AI products, including features driven by LLMs, agents, and advanced audio ML.
Integrate a wide variety of third-party APIs, MCPs, and data stores to expand our platform's capabilities.
Get hands-on with Voice AI, building systems for audio analysis and processing, VAD, noise cancelation, turn management, 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, TypeScript, or Electron is also a big plus.
You have experience with API/MCP integrations and can quickly get up to speed on new services.
You have deep, practical experience with building AI Agents, integrating and evaluating LLMs, prompt engineering, and evals.
You have built scalable, responsive infrastructure under high-traffic and big-data regulatory requirements.
Experience building prod-grade agents for the memory, context, and tooling challenges.
You are exceptionally driven with a strong entrepreneurial mindset and are excited by the prospect of joining the team at an early stage.
You are a pragmatic problem-solver who can translate complex requirements into robust, scalable, and secure technical solutions.
Previous experience in FinTech, InsurTech, or other regulated industries is a plus.
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 higher this time. Join an extremely fast-moving AI startup that’s transforming how thousands of customers experience financial advice.
In addition to a competitive salary, we offer significant equity.
Updated 16h ago
Candidate fit
Skills and qualifications
Additional skills
Experience
5-8 years
How this role is positioned
Role classification
Job domains
Industries
Employment
Full Time
Contract duration
Permanent
Hiring type
Direct
Global hiring
Location specific
Offer details
Compensation and benefits
Compensation
Compensation not disclosed
Location, schedule, and role shape
Work setup
Work conditions
Bandwidth profile
Context on the employer
Company snapshot
Company
UseToday ApS
Team size
Growing team
Location
Remote, Germany
TODAY revolutionizes Financial Advice by making advisors AI-native. Its AI sales operating system supports financial and insurance advisors before, during, and after client meetings, so they save time and give their clients better advice.
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Senior Fullstack Engineer
Remote, Germany • Full Time