Berlin, Germany Hybrid Employment 70.000 € to 130.000 € / year

CEF AI is hiring 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.
Required Skills
strong expertise in Rust.on chain governance frameworks such as PLinux environmentscontainerized depDocker / Docker Composemonitoring systemslogsnetwork metrics.Substrate FRAMEruntime developmentor pallet design. strong expertise in Rust.on chain governance frameworks such as PLinux environmentscontainerized depDocker / Docker Composemonitoring systemslogsnetwork metrics.Substrate FRAMEruntime developmentor pallet design.
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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 4 months ago