Sunny.
About

Sunny Radadiya

Blockchain Engineer · AI Systems Builder · Smart Contract Auditor

I am a software engineer, blockchain developer, and AI systems builder focused on creating products at the intersection of AI, automation, financial infrastructure, and decentralized technologies.

Over the last 8+ years I have worked across mobile development, backend systems, smart contracts, DeFi infrastructure, AI agents, and automation platforms. My work spans from building production DeFi protocols managing millions of dollars in user funds to designing autonomous AI systems that interact with developer tools, GitHub, messaging platforms, and external services.

Right now I work independently — building AI and Web3 apps, shipping personal products and service-based engagements, and taking on private smart contract audits.

I enjoy building products from zero to one, experimenting with emerging technologies, and turning complex systems into simple user experiences.

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Experience

  1. Nov 2025 — Present
    Bangalore

    Independent Engineer — AI, Web3 & Audits — Self-employed

    Building AI and Web3 apps, shipping personal products + service-based engagements, and taking private smart contract audits.

    • Independent product builds across AI agents, DeFi tooling, and developer infrastructure.
    • Service-based engagements for protocol teams and early-stage builders.
    • Private smart contract audits (see Audits page for scope and methodology).
  2. 06/2025 — Present
    Bangalore

    Smart Contract Security Auditor — Private Audits

    Private smart contract security audits for DeFi, cross-chain, escrow, vault, and settlement contracts.

    • Line-by-line Solidity review: access control, signature/replay risks, accounting bugs, upgrade risks, fund-stranding edge cases.
    • Foundry, fuzz tests, invariant tests, Slither, Aderyn, Semgrep, Halmos.
    • Runnable proof-of-concept tests and clear audit reports with severity, impact, affected code, recommended fixes.
    • Recent: cross-chain intent settlement, upgradeable vaults, escrow, bridge-backed contracts, zk-rollup L1 settlement.
  3. 01/2025 — 11/2025
    Remote

    Senior Blockchain Engineer — ZyFAI

    Built ZyFAI, an AI-powered DeFi yield agent that automatically moves user funds across lending protocols for better returns.

    • Protocol data collection across Aave, Morpho, Silo, Euler, Moonwell — APY, TVL, liquidity, utilization, incentives, risk signals.
    • Rebalancing logic: when to move, when to hold, comparing yield against risk/liquidity/cost.
    • Portfolio tracking and earnings systems across continuous multi-chain movement.
    • Smart-wallet execution with session keys, GuardExecModule, and TargetRegistry.
    • AI-agent workflows with LangChain, LangGraph, and PGVector for chat-based DeFi.
  4. 05/2023 — 12/2024
    Bangalore

    Founder & Blockchain Engineer — DeFiLens

    Open-source, multichain DeFi tools to simplify user experience across EVM-compatible networks.

    • Cross-chain DeFi batching protocol with smart-wallet — eliminated manual bridging and network switching.
    • Conditional trading interface supporting DCA, limit, and stop orders.
    • Copy-Trade — automated whale transaction replication.
    • Won bounties from Base network for product innovation.
  5. 10/2021 — 01/2023
    Remote

    Senior Blockchain Engineer — InfinityPools (formerly Lemma Finance)

    Basis-trading / delta-neutral strategy stablecoin (USDL) and synthetic tokens.

    • Core development on basis-trading stablecoin + periphery contracts.
    • Engineered LemmaSwap, a unique decentralized exchange.
    • Integrations with Zapper.fi, ParaSwap, and Forta Network.
    • Foundry + Hardhat for testing and deployments; TypeScript/JS deployment scripts.
  6. 01/2021 — 09/2021
    Remote

    DeFi Freelancer & Gitcoin Bounty Hunter — Independent

    Smart contract challenges and decentralized products for Uniswap, Idle.finance, Badger, Reflexer, Biconomy, Polygon.

    • Completed a Uniswap grants problem submission.
    • Staking and yield mechanisms; UniswapV2 / Sushiswap forks.
    • Yield strategies across Idle.finance, BarnBridge.
    • Hackathon contributions: IdleYieldSource, Badger GuestList Factory, BentoBox, AAVE Pod Encode.
  7. 03/2020 — 01/2021
    Remote

    Solidity Developer — Chill Finance

    Built a Uniswap V2-style DEX for EVM chains plus yield-farming + governance reward mechanisms.

  8. 06/2018 — 09/2019
    Ahmedabad, Gujarat

    Software Engineer — Mobiuso Technologies

    Android healthcare applications + Django REST APIs. Server deployment, performance, mobile-server security.

Philosophy

The most exciting software of the next decade won't be traditional applications. It'll be intelligent systems that observe, reason, automate, and collaborate with humans. My goal is to build products and infrastructure that help make that future practical and accessible.

Education

B.E. Computer Science & Engineering
Parul University, Gujarat · 8.34 / 10 CGPA · 2018

Reach out via email or any of the socials in the footer.