Henry aka cryptix

Systems Engineer & peer-to-peer enthusiast

Technical Expertise

Languages

  • Systems Programming in Go (~2015)
  • JavaScript, Bash, C/C++, Python
  • Interest in Erlang/Elixir, Haskell, OCaml

Networking & Protocols

  • TCP, HTTP, MUXRPC, GRPC
  • JSON, XML, Protobuf, CBOR
  • WebRTC, QUIC, NATS (Learning)

Databases

  • SQL: Postgres, SQLite
  • Key-Value: Redis, Badger, Bolt, LevelDB
  • Distributed: Git, HyperCore, IPFS

Recent Experience

Lead Software Engineer

November 2023 - Present

Leading development of decentralized e-commerce infrastructure and protocols. Focusing on secure, peer-to-peer solutions for digital marketplaces.

Offline-first Engineer

Oktober 2022 - September 2023

Helped upgrading their offline-first sync engine with collaboration features. Joined at a time of a pivot to b2b, which sadly didn't work out.

Chief Technology Officer

October 2021 - July 2022

Leading technical initiatives in Open-Hardware and circular design production. Managing multi-stakeholder projects and coordinating development activities between designers, Fab Labs, and SMEs.

Lead Protocol and Database Engineer

NGI Pointer / SSB
October 2020 - October 2021

Improved replication mechanics of the offline-first social networking platform Secure-Scuttlebutt (SSB). Led development of introduction servers and new binary format for append-only log systems.

Personal Traits

Autodidact Independent Responsible Driven by Passion Inclusive Collaborative