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4thel00z/README.md

Product Engineer (AI)

I build and ship product features end-to-end: from idea → architecture → implementation → shipping → iterating with real-world customer feedback.

What I build

  • AI-assisted product features (agents, retrieval, evaluation workflows)
  • Backend APIs and services (clean contracts, pragmatic architecture)
  • Event-driven systems and integrations
  • Observability-first systems (metrics, logs, traces; debuggable by default)
  • Developer experience (SDKs, tooling, paved roads)

How I work

  • Strong ownership, fast iteration, and clear communication
  • prefer boring, reliable solutions (and I know when not to)
  • care about maintainability: tests where they matter, docs where they help
  • like tight feedback loops: instrument, ship, observe, improve

Current interests

  • Product engineering in the AI space (agents, retrieval, evals, guardrails)
  • Building systems that are simple to operate and hard to break

Toolbox

  • Core: Python, Go, Rust, TypeScript
  • Data: Postgres, MySQL, SQLite, Redis, Qdrant
  • Infra: Linux, Docker, Kubernetes, Terraform, Helm
  • Messaging & async: Kafka, RabbitMQ, SQS/SNS, Temporal, DBOS
  • Cloud: AWS (primary), plus Azure/GCP when needed
  • Observability: OpenTelemetry, Prometheus, Grafana, tracing/telemetry-first debugging
  • AI systems: RAG/search workflows, evaluation harnesses, retrieval quality loops, guardrails

📬 Contact

Open to product engineering roles at early-stage startups (especially in the AI space).

Recent projects

  • 4thel00z — My github frontpage.
  • pdfboss — From-scratch Rust PDF toolkit for Python: fast page rendering and text extraction via PyO3 — benchmarked faster than mainstream Python PDF libraries • Rust — latest release: v0.3.0 (2026-07-16)
  • konan — Blazingly fast text chunkers in Rust with pythonic bindings. Rayon-parallel, real async, char-accurate offsets, semantic chunking • Rust — latest release: v0.3.0 (2026-07-16)
  • dizzle — Rust-powered functional toolkit for Python: toolz-compatible API, Option/Result types, and a fluent Iter — benchmarked faster than cytoolz • Rust
  • mimey — A fast and efficient MIME type and file extension detector implemented in Rust, exposed as a Python package. • Rust
  • ytdown • Rust — latest release: ytdown-v0.7.0 (2026-07-05)
  • memories — Git-powered, file-based memory store with semantic search — CLI and Go library for coding agents • Go — latest release: v0.7.0 (2026-07-05)
  • zml-patched

Pinned Loading

  1. slurp slurp Public

    Cross-Document RAG eval dataset generator with Confluence crawler and LLM-powered question generation using clean architecture

    Python 2

  2. lambda lambda Public

    🧰 Functional programming library for Go — ✅ Option-based error handling, 🔗 fluent pipelines, ⚡ parallel + channel utilities (with generics)

    Go 4

  3. percently percently Public

    ⚡️ Blazing-fast percentile calculator (p50/p95/p99) in Rust — with Python bindings

    Rust

  4. konan konan Public

    Blazingly fast text chunkers in Rust with pythonic bindings. Rayon-parallel, real async, char-accurate offsets, semantic chunking

    Rust

  5. dizzle dizzle Public

    Rust-powered functional toolkit for Python: toolz-compatible API, Option/Result types, and a fluent Iter — benchmarked faster than cytoolz

    Rust

  6. pdfboss pdfboss Public

    From-scratch Rust PDF toolkit for Python: fast page rendering and text extraction via PyO3 — benchmarked faster than mainstream Python PDF libraries

    Rust