Unstoppable Domains unstoppabledomains.com
Web3 + ICANN-accredited DNS domain registrar. Full-stack delivery across a Next.js frontend, Express.js backend, and shared TypeScript library in a monorepo on Google Cloud Platform.
Dec 2021 — Apr 2026
Senior AI Engineer
AI Agent Platform, MCP, RAG, Agentic Systems
Dec 2025 — Apr 2026
- Shipped a multi-persona customer AI widget with router-tool handoff, page-aware mode selection, anonymous/authenticated flows, rich tool-output user interface, and voice input. The widget reached its projected 6-month adoption target within one month.
- Built the Rich Block Renderer — a user-interface primitive that renders tool outputs as inline interactive components in the shared monorepo library, instead of stringified JSON or markdown. Shipped the HeroWithAgents homepage agent-tab row that replaced the legacy hero (A/B tested 5 tabs → 3 tabs + in-widget mode selector), and an admin AI-spend dashboard with per-agent token and cost tracking.
- Led production AI Agent platform across customer, admin, and internal engineering surfaces: 80+ MCP/tool-use layer over Postgres, Freshdesk, GCP logs, Redis, BigQuery, Notion, and live APIs; shared Claude client across four services; Redis-backed sessions; OTP/email auth cascade; 2FA gates for destructive tools; prompt-injection guardrails; and per-user credit billing.
- Built the company's first MCP servers (internal + public), giving employees and external integrations safe, auditable large language model (LLM) access to internal data sources (Notion, Freshdesk Knowledge Base, Redis, Google BigQuery, Postgres) — multi-source RAG via tool-use, with personally identifiable information (PII) redaction, column-level blocklists, and OAuth scope gates enforced at the retrieval boundary on every query. Built internal agentic engineering tools: @buddy Slack/Linear triage bot reads tickets, queries database replicas, tails GCP/Datadog logs, inspects code paths, and posts structured root-cause proposals.
- Built the GitHub Actions workflow that gates pull requests on AI review and auto-approves low-risk PRs (advisory mode, ISO-compliant). Split monolithic backend test suites into parallel jobs with isolated Redis workers and on-demand blockchain sandboxes, cutting backend CI runtime from ~75 minutes to ~12 minutes and per-run cost from ~$0.52 to ~$0.15.
Senior Product Engineer
Wallets, DNS, Marketplace, Payments
Feb 2024 — Nov 2025
- Owned high-trust Web3/payment product flows: Fireblocks MPC custody wallet, WalletConnect, domain minting and transfer flows, marketplace listing saga with retry/rollback, Stripe subscriptions, Moonpay on-ramp, and Coinbase CDP Payment Links on Base (Layer 2). Built the state machines, webhooks, recovery paths, admin tooling, and React surfaces for long-running, failure-prone money/domain operations.
- Architected the DNS transfer-in pipeline end-to-end: bulk authorization code validation with dynamic caching in Redis, async Bull job queues processing up to 500 domains per batch, retry and recovery flows, user operation state machines, and comprehensive admin dashboard tooling. Pipeline now handles several thousand inbound domain transfers per month, with peaks over 50,000 during high-volume periods.
- Built marketplace features: bulk listing with custody-wallet auto-signing using a saga pattern (single user intent → N tracked on-chain operations with retry/rollback), offer and counter-offer negotiation, buyer-seller messaging system, offer-only listings, high-price review safeguards, and per-listing DNS-based lander pages.
- Led migration from Coinbase Commerce to Coinbase Business Partner Payment Links on Base (Layer 2): Coinbase Developer Platform (CDP) JSON Web Token (JWT) authentication, rewrote the API client, and built a new webhook handler.
- Provided architecture direction and code review across a ~20-person engineering team; owned cross-service migrations and platform upgrades including React 17 to 18, TypeORM 0.2 to 0.3, Node.js 16 to 24, global HTTP connection pooling, and N+1 PostgreSQL query elimination via bulk-loading.
Senior Software Engineer
Full-Stack — Domains, Identity, Foundations
Dec 2021 — Jan 2024
- Delivered TLD launches and product features: refunds, payment-method gating, domain auto-renewal, domain parking and vault products, and distribution admin tooling. Owned end-to-end across backend, queues, admin tools, and UI.
- Web performance overhaul: lifted Google PageSpeed Insights score from 14 to 85 and shrank the frontend bundle from 2.4MB to 365KB through code splitting, lazy loading, font preloading, deferred third-party scripts, and per-component chunking.
- Designed and shipped Stripe subscription automation end-to-end from scratch — recurring billing, webhooks, retry handling. Integrated Moonpay for fiat-to-crypto on-ramp; built checkout flows for both fiat and cryptocurrency payments.
- Designed and built the badge system as a configurable framework (0 → 1, then handed off — next team added new badges via config alone): HoldNDomains, EarlyAdopter, OlympusDao, NYearClub — wallet-badge endpoints, configuration, public profile integration, and optimized queries. Hardened identity flows: Telegram authentication and Discord validation.
- Built a compile-time TypeScript type checker for the in-house i18n function using recursive conditional types over the source-of-truth en.json locale, narrowing valid keys via dotted-path traversal. Catches typos and renamed keys at build time, preventing empty-string bugs from reaching production.