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Sumit.

Vadodara, India

Sumit VekariyaEngineer, verifiable systems & evaluation@sarkazein

Eight years shipping software, five in blockchain. I build production smart contracts and full-stack products, with a focus on account abstraction, verifiable identity, and zero-knowledge patterns. I’ve merged 45+ PRs into public docs, client codebases, and security libraries across the ecosystem.

I’m deepening work in probabilistic ML and technical AI safety, especially reliable evaluation, building on the same instincts I use for auditability and adversarial thinking in open networks.

Certified yoga instructor · Mentor at EthIndia & EthSingapore (2023–2025).

⌘ K / Ctrl K— all sections

Experience

  • Tea.xyz (PKGX Inc.) — Blockchain consultant (protocol & infrastructure)
    • BounTEA: turn GitHub issues into funded on-chain bounties (escrow, lifecycle contracts, and GPG-backed verification).
    • Shipped ERC-6900 GPG validation, TEA token allowance helpers, off-chain bounty storage, payouts to GPG-linked wallets, and a GitHub-authenticated dashboard.
    • Evaluation research: impact-evaluation design for open-source work (audit-friendly metrics and provenance, fed BounTEA / IERR); presented at Protocol Labs’ Impact Evaluators retreat.
  • Sacred Protocol — Blockchain developer & relations
    • Sacred Logos: DAO social layer (token gating, chat, notifications via Ceramic, Farcaster, Web3Auth, Supabase), plus ZK voting so holders can signal without doxxing wallets.
    • Sacred Finance: privacy-preserving DeFi (ZK proofs, mixers, privacy scoring, and a custom relayer stack).
    • Developer relations at Ethereum events; shipped integrations with IPFS, Orbis, and decentralized identity.
  • Codemarket — Founding full stack developer
    • Co-founded a live skill marketplace with real-time audio/video mentoring; owned the full stack from MVP to scale.
    • Ran hiring and community meetups; established remote-first agile practices for delivery.
  • Zettabyte — Founding team lead & senior developer
    • Led ADMTC, an education platform that reached 150+ institutions and 5,000+ students; grew engineering from 1 to 5.
    • Introduced CI/CD, automated tests, and architecture reviews so releases stayed safe as load grew.

Projects

  • Zkred Agent ID

    EIP-8004 · DIDs · TS SDK · x402 · 2025

    Lets integrators register agents with DIDs on EIP-8004 using a TypeScript SDK (no Solidity required for the happy path), plus an x402 payment server (USDC / EIP-712).

  • Zkred: Proof of Humanity

    ZK · PrivadoID · SSI · 2024 to present

    Proves personhood with ZK and short-lived (15-day) credentials so you verify once and retain less raw PII.

  • ZKAccess

    Next.js · account aggregator · ZK · 2024

    Selective-disclosure identity checks aligned with India’s DPDP Act; shortlisted at the Sahamati Hackathon.

  • TruLens

    Noir · Starknet · IPFS · 2024

    Camera pipeline that anchors media provenance with ZK; shortlisted at Noirhack 2025.

  • Sol2Seq

    Rust · Solidity · CLI · 2024

    Rust CLI: point it at Solidity contracts, get sequence diagrams your team can paste into docs or reviews.

  • Smart Contract Humanizer

    Solidity · NLP · 2023

    Reads an ABI, lets you call contracts from plain language, and returns explanations non-Web3 teammates can follow.

  • De Keeper

    IPFS · Chrome extension · 2022

    Password vault you control, stored on IPFS; won an IPFS/Filecoin bounty track at a hackathon.

  • OpenBooks

    Dart · Solana · on-chain library

    Peer-to-peer library of books on Solana: catalog and flows in Dart, on-chain where it matters.

AI & research

Research interests sit at identity, privacy-preserving coordination, and how we evaluate contributions in open ecosystems: the same problems that show up when we ask whether AI systems are measured honestly and held accountable.

Research themes

  • Identity and accountability for autonomous and human actors in open networks.
  • Privacy-preserving coordination (ZK, verifiable computation) as a template for trustworthy pipelines.
  • Impact evaluation and attestations in open source, with a cryptographic framing toward evaluation reliability.

What I’m doing now

  • Self-directed study toward probabilistic ML and technical AI safety (evaluation, calibration, robustness).
  • Ongoing technical writing on safety vocabulary, discovery tooling, and cognitive security (see Writing below).
  • Day-job thread: audit-friendly metrics and provenance for open-source contributions (Tea.xyz / BounTEA).

AI-adjacent projects

  • Zkred Agent ID

    Verifiable on-chain identity for agents: accountability primitives relevant to AI agent deployments.

  • TruLens

    Media provenance with ZK—authenticity and tamper-evidence adjacent to generative-media questions.

Writing

Filter by topic — each piece can appear under more than one tag.

Residencies

  • Impact Evaluators Research RetreatIceland · 2025

    IERR · invited participant

    In-residence work on verifiable impact evaluation for open source—direction that fed the BounTEA paper (listed at IERR 2025).

  • Cypherpunk CampBerlin

    Invited participant

    Privacy- and cryptography-focused builders’ program—secure comms, decentralized identity, and verifiable systems.

Open source

I treat upstream work as part of the job: 45+ merged PRs that tightened docs, security, and day-to-day developer experience—mostly across Ethereum ecosystems (Ethereum.org, clients, security libraries). Product work spans EVM and beyond (e.g. Solana).

ETHGlobal New Delhi 2024 (multiple wins), IPFS/Filecoin bounty 2022; shortlists: Noirhack 2025, Sahamati.

Technical skills

  • Languages: Solidity (5y), TypeScript (8y), JavaScript (8y), Rust (2y), Python
  • ML & AI safety focus: evaluation design, benchmark interpretation, reliability framing, interpretability concepts, threat modeling
  • Math (applied): probability, statistics, linear algebra
  • Coursework (B.Tech): Artificial Intelligence, numerical & statistical methods, data mining, algorithms, theory of computation
  • Blockchain: Ethereum & EVM (primary), Solana, Web3.js, Ethers.js, Hardhat, Foundry, OpenZeppelin, Wagmi, Viem
  • ZK & privacy: Noir, Circom, PrivadoID, Semaphore, zk-SNARKs
  • Protocols: ERC-20/721/1155, EIP-8004, EIP-6900, EIP-4337, IPFS
  • Full stack: React, Next.js, Node.js, NestJS, Postgres, MongoDB, Docker, AWS, CI/CD

Education & certifications

  • B.Tech computer science — Marwadi Education Foundation (2013–2017)
  • Protocol Labs Dev Guild (2025)
  • Encode Club Solidity Bootcamp (2024)
  • Certified yoga instructor

Key achievements

  • Shipped EIP-8004 extensions for DIDs so autonomous agents can register on-chain, live on multiple chains.
  • Built the ERC-6900 GPG validation module (fork: gpg-modular-account), PR #334.
  • Contributed Lotus StateSectorCmd so DealIDs surface with backward compatibility, PR #13140.
  • ETHGlobal New Delhi 2024: Zkred Agent ID placed 2nd (Hedera AI) and 4th (Polygon Agentic Payments).
  • 45+ merged PRs to Ethereum.org, Semaphore, Nethermind, OpenZeppelin: docs, security, and developer experience.
  • Essays on evaluation quality, AI safety concepts, and trustworthy infrastructure (Medium / Substack).

Contact

sarkazein7@gmail.com

Download resume (PDF)