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  • Berlin, Germany

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evanphi7/README.md

Jan Hoffmann

KEY VALUE
Where Berlin, Germany
Doing Solana / DeFi infrastructure
Stack Rust, TypeScript, Anchor
Open to Independent / contract work

What I'm working on

Building small, dependency-light Rust crates for the Solana ecosystem — the kind of tools I keep wishing existed when I'm wiring up an indexer or a routing path at 2 a.m. and don't want to pull in another framework.

Most of my time goes into:

  • DeFi primitives: AMM math, oracles, liquidation paths
  • Off-chain indexing & quoting (Yellowstone gRPC, RPC fan-out, caching)
  • The boring-but-load-bearing glue: error handling, backoff, retries

I tend to keep things readable over clever. If a crate I publish reaches 1k lines, it's already too big.

A few things I'm proud of

  • lighthouse-router — off-chain DEX route discovery on Solana. Pool decoders for Raydium / Orca Whirlpool / Phoenix, multi-hop quoting, and Bellman-Ford negative-cycle detection for marginal arbs. Honest about its limits — refuses to quote rather than lie.

Tech I reach for

Rust TypeScript Solana Anchor PostgreSQL Docker Linux Tokio

Things I think about a lot

  • Why "fast" usually means "fewer indirections" before it means "more cores"
  • The half-life of an MEV strategy
  • How much of "DeFi infra" is still just careful event sourcing in disguise

If you want to talk Solana, oracles, or Rust async patterns — happy to.

Pinned Loading

  1. lighthouse-router lighthouse-router Public

    Off-chain DEX route discovery on Solana — pool decoders, multi-hop quoting, and arbitrage cycle detection

    Rust 83 76

  2. jackyideal/AlphaTeam jackyideal/AlphaTeam Public

    ” AlphaTeam : Trustworthy, Controllable, and Traceable Quantitative Trading PlatForm“

    Python 313 41