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xklob/README.md

Caleb Ditchfield

Senior Backend & Blockchain Engineer | Node.js, TypeScript, EVM Infrastructure

I have been building software professionally since 2017, primarily TypeScript/Node.js backends and Ethereum systems. My strongest work sits where financial logic, distributed transaction processing, security controls, and production operations meet: stablecoins, tokenization, wallet/signing flows, permissions, deterministic simulation, monitoring, and incident response.

Portfolio · LinkedIn

Engineering focus

  • Backend and distributed systems: Node.js, TypeScript, APIs, event-driven/asynchronous pipelines, workers, IPC, deterministic simulation, Docker, Linux, and CI/CD
  • Blockchain infrastructure: Ethereum/EVM, transaction orchestration, wallet/signing flows, smart-contract integrations, ERC-20/721, payment channels, and onchain/offchain settlement
  • Security and reliability: role-based permissions, governance controls, threat modeling, automated testing, monitoring, incident response, and deployment safeguards
  • Applied AI and developer tooling: coding-agent evaluation, test/grader design, retrieval-based code analysis, and agentic repository workflows

Selected work

Work What it demonstrates
Fei Protocol Core · 96 authored PRs · 83 merged Stablecoin lifecycle engineering, production Solidity and TypeScript, role-based permissions, governance, redemption, deployment automation, monitoring, and incident response through $3.5B peak PCV.
Tarkin case study Private-code, publicly receipted TypeScript/Node.js transaction infrastructure: mempool ingestion, wallet/signing flows, local-node simulation, eight workers, guarded execution, Docker, observability, and 410k+ live transactions.
Votre / Collar case study Greenfield architecture and implementation of a financial protocol as sole founding engineer through a16z CSX.
Arboreum Ethereum-based carbon-credit/RWA tokenization, verification, and marketplace architecture.
Hypernet Payment channels and TypeScript/Node.js middleware connecting off-chain application state to Ethereum settlement.
Meta Archive Explorer FastAPI, SQLite/Alembic, React/TypeScript, provenance-preserving ingestion, and local semantic retrieval across 40+ GiB and 1.3M+ messages.
Spearbot TypeScript retrieval pipeline for Solidity code analysis using hierarchical summaries and local HNSW search.
Codex Repo Template Durable product/architecture context and executable planning conventions for humans and coding agents.
MineableGemToken Hackathon-winning ERC-918/721 experiment with a GPU miner and marketplace prototype.

Tarkin, Votre, Arboreum, and Hypernet are presented as professional case studies; private or client source code is not represented as public.

Pinned Loading

  1. Hexagons-Bestagons-Tower-Defense Hexagons-Bestagons-Tower-Defense Public

    Tick / loop-driven HexagonsBestagons tower defense game running on HTML5 canvas + Typescript for the simluation engine.

    HTML 2 1

  2. codex-repo-template codex-repo-template Public template

    This repository is a starting point for agentic-forward software projects with Codex - projects that expect coding agents to participate in design, implementation, review, and maintenance from the …

    JavaScript 35 1

  3. monitor monitor Public

    CLI utility that takes periodic screenshots of your desktop and summarizes what you've been up to. Runs within WSL on Windows 11.

    Shell

  4. fei-protocol/fei-protocol-core fei-protocol/fei-protocol-core Public

    FEI Protocol smart contract code, tests, and scripts/utilities for DAO proposals.

    TypeScript 192 95

  5. codexmux codexmux Public

    Go