Aman Jha

Backend & Blockchain Engineer

I design and build backend systems and on-chain programs across blockchains, from smart contracts in Rust, Anchor, and Solidity to the APIs, services, and infrastructure that power them. Most of my recent work has been on Solana.

experience:

Founder & Lead Engineer at Hodl.fun

September 2025 to February 2026
  • Built and shipped a cross-chain token launchpad on Push Chain from zero to production, owning architecture, smart contracts, backend, and frontend
  • Solved a core DeFi UX problem (token launches trapped on a single chain) by enabling launches and trades with assets from any supported chain (ETH, SOL), no bridging required, via Push Chain's universal account system
  • Scaled to ~800K transactions and 500K+ token launches on testnet
  • Wrote the bonding-curve engine into a modular, upgradeable system: separate Core orchestrator, Factory, per-token BondingCurve, and an ERC4626 FeeVault for fee management, with proper constant-product AMM math and virtual reserves for smoother price discovery
  • Integrated Uniswap V3 for automatic DEX listing once a token's bonding curve hits its liquidity target, graduating it from the internal curve to full open-market trading
  • All contracts upgradeable via UUPS proxy pattern, with reentrancy protection, access control, and invariant checks
  • Shipped a full-stack system: Foundry smart contracts, NestJS backend, Next.js frontend
  • Runner-Up, Project G.U.D hackathon (Push Chain)
  • Live at thehodl.whyparabola.online
SolidityFoundryTypeScriptNext.jsethers.jsUniswap V3

projects:

Sealevel

  • Coding LLM fine-tuned specifically for Solana/Anchor development: QLoRA fine-tune of Qwen2.5-Coder-7B on 270k Solana-specific records
  • 85% on an 80-task Solana/Anchor benchmark, 90% on general HumanEval
  • RAG pipeline over current Solana docs (Qdrant) keeps it accurate as Anchor syntax evolves
  • Served via an OpenAI-compatible API across web, CLI, VS Code, and MCP, with direct integration into Claude Code, Cursor, and Windsurf
  • 1,500+ installs on PyPI
PythonPyTorchSGLangQdrantMCPNext.js

perpX

  • Decentralized secondary market for Kalshi prediction markets on Solana: trade election, macro, and crypto outcome markets with up to 40x leverage, permissionless and non-custodial (Kalshi itself is KYC'd, US-only)
  • Built a 1:1 market-sync layer mirroring Kalshi's live prices and settlement outcomes on-chain
  • Automated keeper bot handles liquidations and expiry settlement
  • Full Anchor program: isolated-margin positions, liquidation engine, insurance fund for under-collateralized trades
RustAnchorSolanaTypeScriptNext.js

Private Perps DEX

  • Privacy-focused perpetual futures DEX on Solana: position size, collateral, leverage, and PnL are fully encrypted on-chain via Arcium's MPC network
  • Deposits/withdrawals route through Zcash shielded transactions, breaking the on-chain link between funding source and trading activity
  • Combines a public Anchor perps engine + confidential Arcium program + Zcash bridge relayer, priced by Pyth oracles
  • Solves front-running and strategy-copying, the core weaknesses of transparent on-chain DEXes
RustAnchorSolanaArciumPythNode.js

achievements:

6 wins across grants and hackathons

Grants

  • Solana Foundation × CoinDCX India Grant: $4,000 for tradeX (Feb 2025)
  • Dialect Instagrant: $1,000 for X-Mailer (Jan 2025)

Hackathons

  • Agents in Action Hackathon: 🥉 Akash Track (Best Overall Project), $2,000 Akash Credits, for PayPerUse
  • Agent Arena – University Hackathon: IQAI MVP Winner, for ResearchOS
  • Zo House Hackathon: Data Management AI Agent Track, 420 USDT, for DockMind
  • Project G.U.D (Push Chain): Runner-Up, for Hodl.fun

blog:

i build with:

RustAnchorSolanaTypeScriptNode.jsNext.jsPythonSolidityFoundryPostgreSQLRedisPythQdrantDocker

if you're hiring for backend or blockchain engineering, or want to build on-chain systems together, feel free to dm me on x or drop me an email.