Job description
Principal Software Engineer
Company Overview
CEF.AI is an IT System Data Services company with 11-50 employees.
Job Summary
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
Requirements / Qualifications
- 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
Preferred Qualifications
- 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
Location
Berlin, Germany, Remote: On
Employment Type
Full Time
