This position is no longer available
Berlin, Germany Hybrid EUR 70,000 – 130,000 / year

CEF AI was looking for a Lead Blockchain Engineer

Requirements

  • 7+ years of engineering experience with strong expertise in Rust.
  • Deep experience working with Substrate and blockchain runtime development.
  • Strong understanding of applied cryptography, including hashing, signatures, and ZK proofs.
  • Experience architecting distributed systems and consensus mechanisms.
  • Familiarity with on chain governance frameworks such as Polkadot/OpenGov.
  • Experience building or modifying core blockchain protocol components.
  • Experience deploying and maintaining blockchain nodes and networks.
  • Hands on experience running testnet and mainnet infrastructure.
  • Strong experience with Linux environments and containerized deployments.
  • Experience with Docker / Docker Compose (Kubernetes is a plus).
  • Familiarity with monitoring systems, logs, and network metrics.(Kubernetes is a plus)

Nice to Have

  • Experience with Substrate FRAME, runtime development, or pallet design.
  • Background in Computer Science or equivalent high impact Web3 experience.

Benefits

  • Real Equity: We treat early team members like partners. You’ll receive meaningful equity so the upside you help create is shared.
  • Direct Access to Leadership: You are part of the core conversation. You will work side by side with the CEO and founders every day to solve hard problems and set the strategy.
  • Work on Hard, Emerging Problems: We are building infrastructure for AI agents operating on sensitive, real-time data without relying on centralized black box platforms. While parts of this ecosystem exist, the architecture for doing it securely and reliably at scale is still evolving.
  • Small Team, High Output: We believe the best teams are small and extremely capable. AI tools increase individual leverage, so we hire fewer people and expect a much higher level of ownership and output.
  • Autonomy With Accountability: We hire people who don’t wait for permission to solve problems. If you see a better way to build something, you’re expected to propose it and ship it.
  • Remote With Real Collaboration: We are a remote-first team but believe strong collaboration requires real interaction. The team meets regularly in San Francisco and Europe for focused building sessions and hackathons.
About company
CEF AI

A unified orchestration, data and compute platform that replaces legacy batch processing with agent execution. Built for edge-deployment with adaptive context, complete data control and full data lineage.

CEF provides a complete infrastructure stack for multi-agent systems, featuring real-time evals, data lineage, live event-driven compute, unified adaptive memory, and sovereign data vaults. The platform supports on-prem, VPC, cloud, and hybrid deployments with full data sovereignty and auditability.

Designed for robotics, gaming, and security applications, CEF enables enterprises to deploy AI agents that deliver measurable results with real-time feedback loops and full ownership of data and models.

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Job Details
Department Engineering
Category infrastructure
Posted 5 months ago