Principal Software Engineer

CEF.AI; Frankfurt; Vor Ort; EUR 50.000 - 75.000; Vollzeit

Zusammenfassung

Join a leading startup as a Software Engineer in Frankfurt, where you will play a vital role in developing an AI-first data computing platform. You'll work in a fast-paced environment, collaborating to shape the foundation of innovative AI applications while leveraging modern technologies. A flexible and growth-oriented position awaits the right candidate!

Qualifikationen

• 4+ years of professional software development experience.
• Deep expertise in computer science with strong knowledge of data structures and algorithms.
• Experience with TDD and a rigorous approach to software quality.

Aufgaben

• Architect and implement backend solutions.
• Rapidly prototype and refine new products.
• Lead projects from concept to production.

Kenntnisse

Software Development

Computer Science

Technical Communication

Test-Driven Development

Leadership

Tools

Go

Rust

Kotlin

React

Node.js

TypeScript

GraphQL

Jobbeschreibung

Are you excited by the opportunity to become a part of a badass team leading the AI-first data revolution?

Do you thrive on solving hard problems (individually and collectively), yet humble and hungry to learn and grow within a team on your path to greatness?

Do you desire to become a part of a close-knit pack led by SV startup veterans who can accelerate your growth 10X (compared to the corporate trajectory / culture)?

If you’ve answered with 3 resounding "yes", then we want to meet you!

You will play a critical role in designing and building our AI-first data computing platform. This is not just an execution role — we’re looking for someone who thinks strategically, moves with intention, and can take ideas from concept to production with a balance of technical depth and practical decision-making.

You’ll be working across the stack, applying modern technologies to develop performant, secure, and scalable systems. This is an opportunity to help shape the foundation of a platform that powers real-world AI applications at scale.

Key Responsibilities

• Architect and implement backend solutions
• Rapidly prototype and refine new products, working closely with design and product teams, leverage tools like Cursor to automate creating new frontend features.
• Design and maintain SDKs, CLI tools, and developer-facing platforms
• Lead projects from concept to production, ensuring code quality, performance, and scalability
• Mentor and guide engineers, fostering a high-performance engineering culture
• 4+ years of professional software development experience
• Familiarity with our tech stack (we use Go, Rust, Kotlin, React, Node.js and TypeScript - the team, however, is language-agnostic, so we are flexible in our language requirements, especially if you are savvy with AI coding tools)
• Deep expertise in computer science with a strong grasp of data structures and algorithms
• Experience with Test-Driven Development (TDD) and a rigorous approach to software quality
• Tech writing and solid communication skills are essential

Nice to Have

• Experience with distributed or decentralized architectures
• Familiarity with Web3 technologies, decentralized systems, and blockchain protocols
• Background in multi-chain wallet development, EVM, or Substrate
• Prior exposure to AI / ML-driven applications
• Strong leadership skills and experience guiding technical teams
• Experience with GraphQL
• Samples of your code, documentation or tech articles will put your application on the fast track

Please note :

As a startup, you can expect longer hours and a fast-paced environment.

If you are seeking a traditional corporate 9-to-5 role, this may not be the right fit.

free career advice written by one of our team members) : https : / / dimakorolev.substack.com / p / a-players-who-are-they

Software Engineer • Frankfurt, Hesse, Germany