Hardware

Secondary compute host (Linux)
Handles long-running compute and collection workloads outside the primary workstation.
Private device network
Connects trusted devices with encrypted access while keeping operational addresses and paths out of public documentation.

Editor and shell

VS Code + Helix (situation-dependent)
VS Code for anything with a Claude Code CLI session attached; Helix for quick terminal edits where modal keybindings are faster than reaching for the mouse.
WezTerm
GPU-accelerated, cross-platform, and configurable in Lua without a plugin ecosystem to maintain. Multiplexing replaces most tmux use.
Starship prompt
Fast and context-aware. Shows git state, Rust toolchain version, and exit codes without shell-startup overhead.
Zsh + Atuin
Atuin replaces Ctrl-R with a searchable, synced shell history. The delta between remembering a command and finding it in history collapses.

Languages and runtimes

Rust
First choice for anything compute-critical, latency-sensitive, or where I want type-system guarantees at integration boundaries. The WASM pricer and API service are both Rust.
Python
Data pipelines, strategy code, and scripting where the ecosystem (numpy, pandas, scipy) is the right fit. pyright keeps the type boundaries honest.
Node / TypeScript
Frontend build tooling and Astro. TypeScript with strict mode is a prerequisite because untyped JavaScript has too high a per-change reasoning cost.
Bash
Glue scripts and cron wrappers. Kept short and single-purpose; anything that needs real logic gets promoted to Rust or Python.

AI-assisted development

Claude Code CLI
Used for context-aware multi-file analysis and implementation, with human review and repository checks defining the acceptance boundary.
Codex CLI
Used for bounded implementation and verification tasks where the work can be inspected against explicit tests and evidence.
Agent swarm patterns
Independent work can run in parallel lanes when each lane has a clear owner, acceptance criteria, and independently verifiable output.

Infrastructure

Cloudflare Pages
Static frontend hosting with a global CDN. The build and deployment path stays simple and keeps the primary portfolio routes static-first.
GitHub Actions
CI/CD for the monorepo. The pipeline runs Vitest, TypeScript checks, Playwright, and cargo test before any merge.

CLI tooling

ripgrep (rg)
Fast repository-scale text search with .gitignore-aware defaults and predictable command-line output.
fd
Replaces find with sane defaults and gitignore awareness. The syntax is intuitive enough to use without consulting the man page.
bat, delta, lazygit
bat for syntax-highlighted cat output, delta for readable git diffs, lazygit for staged hunks and interactive rebase without leaving the terminal.
gh CLI
GitHub API from the shell. PR creation, issue management, and CI status without opening a browser tab.

The philosophy behind this list: prefer terminal-native, prefer composable, prefer tools whose failure mode is loud rather than silent. A tool that silently returns empty results when it can’t find something is more dangerous than one that errors.

Churn-resistance matters more than novelty. I add something to this list when it solves a real problem I had before, not when it trends on Hacker News. Most of the CLI tools here were added in a single deliberate rollout after auditing actual bottlenecks, not accumulated one-by-one over years of reading newsletters.

AI work is evidence-bounded. Agent tools are useful for multi-file analysis, implementation, and verification when the task has explicit acceptance criteria. Human review, repository checks, and live behavior remain the completion gate.

The Rust/Python/TypeScript split is intentional. Rust owns anything where correctness and performance matter at the boundary: APIs, WASM, CLI tools with production impact. Python owns data pipelines and strategy code where the ecosystem is the right fit. TypeScript owns the frontend where type-checked component boundaries prevent the class of silent runtime failures that make JavaScript codebases hard to maintain at scale.