Welcome! I'm Dave, a DeFi/Web3 & Full‑Stack engineer focused on smart contracts, defi apps, and production‑grade full‑stack dapps. I combine a finance/M&A background with rigorous engineering to ship secure, gas‑efficient, and user‑centric onchain products.

Full‑stack blockchain engineer with deep experience in Solidity, ERC-115, ERC‑4337, and React/Next.js. I leverage financial modeling and due‑diligence experience to design robust DeFi systems with clear risk controls, strong test coverage, and pragmatic DevEx. Passionate about shipping real products that balance security, performance, and UX.

• Director of M&A | VetEvolve (May 2024 - Present)

  • Lead detailed business valuation analyses, resulting in improved EBITDA accuracy.
  • Manage end-to-end transaction lifecycles, enhancing strategic investment decisions.
  • Streamline financial due diligence processes, significantly reducing processing times.

• Director of Mergers & Acquisitions | Destination Pet (Nov 2022 - Jan 2024)

  • Successfully oversaw the acquisition and integration of 67 veterinary practices.
  • Directed a team of analysts to achieve record-setting growth through strategic acquisitions.
  • Improved operational efficiency in valuation and financial modeling processes.

• Full Stack Web3 Advanced Solidity Bootcamp (Metana, May 2024 - June 2025)
• BS, Business Administration (California Lutheran University, 2015)

Blockchain:

Full-Stack Development:

Databases & DevOps:

Data & AI:

• CI gates: build, tests, coverage (lcov), gas snapshots on PRs.
• Security: Slither static analysis; linting with Solhint.
• Artifacts: coverage and gas reports uploaded in CI.

• Account Abstraction (ERC‑4337): paymasters, SimpleAccount flows, userOp UX
• DeFi protocol patterns: budgets/caps, staking/rewards, vault‑style controls
• Gas optimization and testing: Foundry test suites, coverage, fuzz/invariant tests
• Secure token standards & receipts: ERC‑721 SBT (ERC‑5192), ERC‑1155
• Offchain integrations: Chainlink Functions/Automation, event‑driven jobs

• Role: Smart Contract + Full-Stack Developer
• Stack: Solidity, Foundry, OpenZeppelin, ERC-4337 (EntryPoint v0.8), TypeScript, Next.js, viem, wagmi, GitHub Actions, Slither, Solhint
• One-liner: A verifying paymaster that sponsors gas for allowlisted smart accounts with monthly budgets, safety caps, and optional SBT receipts—plus a dashboard and reproducible local demo.
• Live: https://dao-gas.vercel.app/
• On-chain:
  • BudgetPaymaster: per-sender monthly budgets, sender allowlist, per-op and fee caps, global cap, UTC month rollover, deposit/stake helpers, optional ReceiptNFT mint in postOp.
  • ReceiptNFT (SBT): ERC-721 with ERC-5192 "locked" semantics, one receipt per sponsored op.
  • GovActions: tiny target contract to demo allowlisting and sponsored calls.
• Off-chain / Web:
  • Next.js dashboard (wagmi/viem): view budget, call demo actions, preview AA userOps.
  • Scripts + Makefile: deploy, stake/deposit, seed budgets, set caps/global cap, local end-to-end demo.
  • CI: forge build/test, coverage (lcov), gas snapshots, Slither, Solhint, web build/lint.
• How it works: Validates UserOperations against sender budget and safety caps during validatePaymasterUserOp, then debits actual gas costs in postOp. Budgets reset at UTC month boundaries. Each sponsored op can mint a soulbound receipt.

• Live: https://ballknower.vercel.app/
• What it is: Next.js app that helps fantasy managers plan and draft. Blends MLB season lines, user-uploaded projections, and Baseball Savant skill metrics (EV, Barrel%, xwOBA) into a pgvector‑backed RAG pipeline, then streams GPT answers with citations, player comparisons, and a cheat‑sheet generator. Hybrid retrieval (vector + trigram), Redis caching, and unit/golden tests keep it fast and trustworthy.
• Tech stack: Next.js 14 (TS, App Router), Tailwind/shadcn, OpenAI (chat + embeddings), Prisma, Supabase Postgres + pgvector, Upstash Redis, Vitest, pino.
• Key features:
  • CSV projection upload, merge, anomaly flags
  • Skill Cards from Statcast; season/intent-aware retrieval
  • Streaming chat with citations; compare view; cheat-sheet generator
  • ETL + embedding jobs, rate limiting, logging, and golden tests

• OddScout OddsScout compares MLB odds between sportsbooks and Polymarket, surfaces arbitrage deltas, and records insights on‑chain via a Solidity contract and Chainlink Functions/Automation.

• Bulldog NFT Forge Web3 app demonstrating minting, forging, burning, and trading of NFTs with ERC-1155 contracts deployed on Polygon Amoy.

• DishSwap Social recipe dapp with image uploads, JWT auth, reactions, and comments; modern Next.js + MongoDB stack with polished UX.

• Personal Portfolio Portfolio showcasing JWT authentication, protected routes, blog functionality, backend processing, responsive design, and Tailwind CSS.

• Roles: Smart Contract Engineer, DeFi Protocol Engineer, Web3 Full‑Stack
• Focus areas: ERC‑4337/AA, protocol design, L2s, security & testing, Chainlink integrations
• Engagements: Full‑time or contract; remote‑friendly

• Master Web3 technologies and continuously launch innovative decentralized apps.
• Collaborate within the developer community to drive innovation in blockchain and decentralized finance.
• Integrate my financial expertise with technological innovation to create secure and impactful blockchain solutions.

P.S.: Feel free to leave feedback or connect—I’m always up for collaborating and learning! 🚀

Support me here 👉 daveyrockets.eth