Open to roles & contracts
Remote or US relocation,
Prabal Pratap Singh
Senior full stack engineer building AI products and onchain systems.
I build products end to end, from the database schema to the billing page. Right now I lead CopyPool at Warlands, a live Uniswap V4 liquidity product, and ship AI products like Testimonia and Lettercape.
I've been building since 2020: 6+ years of experience and 10 hackathon wins along the way.
Selected work
Products and protocols I designed and built end to end.
Demo: Lettercape video plays on hoverLettercape
2026On-brand email campaigns. Paste a website, get a brand kit, draft a campaign with AI, run six pre-send checks, then hand the draft to Klaviyo, Mailchimp and other email platforms.
On-brand emailby WitLabsBeta
Demo: CopyPool video plays on hoverCopyPool
2025Uniswap V4-native LP automation at Warlands: auto-range, compound, and exit.
DeFi · LP automationat WarlandsLive
Landpatch
2026GitHub App that migrates code off the shut-down OpenAI Assistants API. It finds the call sites, has a model patch them onto the Responses API, verifies the patch in a sandbox and opens a pull request only when verification passes.
AI dev tools · GitHub AppLive
Twokey
2026Approvals for AI agents that move money. The agent proposes, deterministic policy code decides, and anything that adds risk waits for a human approval sealed with SHA-256 to the exact terms.
AI agent safety · Paymentsby WitLabsPreview
Collabcape
2026Creator-campaign workspace. An AI agent shortlists creators, breaks down their content and drafts outreach, all against a shared brand profile.
Creator marketingby WitLabsPreview
Shotcape
2026Video storyboarding. Turn a script, blog post or one-line idea into a scene preview built from licensed clips, then export the storyboard as JSON for a production team.
Video & storyboardingby WitLabsPreview
TradeAgent
2026Polymarket research agent. Grok and GPT forecast each market independently, then deterministic risk code sizes positions with fractional Kelly and simulates execution against the real order book.
AI agent · Prediction marketsPaper trading
NexAd
2026AI ad workflows with founder approval. Drafts copy, creative variants and video scripts from a product page, then plans launches across Meta, Google, TikTok, YouTube, X and WhatsApp.
AI growth workflowsby WitLabsPreview
More projects
- On-chain Identity and KYCIdentity and compliance contracts for real-world-asset (RWA) tokens and AI agents: DID registry, KYC credentials, trusted issuers, scoped agent delegation and Groth16 ZK verification.2026
- Opportunity StudioAutonomous coding-agent pipeline. Finds and verifies bounties and hackathons, plans a build, runs Claude Code or Codex in E2B sandboxes, reviews the output and reports progress to Telegram.2026
- PolyLiquidOne ERC-4626 vault token holding stETH, rETH and sAVAX. Rebalances using Chainlink Data Streams and Automation, and moves across chains with Chainlink CCIP.2025
- BuilderFiThe automation layer for DeFi. Non-custodial, no-code strategies: LP automation (range, rebalance, compound), funding-rate arbitrage with automated hedging, and multi-step on-chain workflows run from your own wallet.2025
- Digital CashEnterprise payment platform with tokenized ledger, CQRS, and real-time queue pipeline.2024
- Cross-Chain DeFi AggregatorMulti-chain yield optimization across Ethereum, Polygon, and Arbitrum with Chainlink and The Graph.2024
Experience
Oct 2025 – Present
Full Stack Blockchain Lead, Warlands
- Architected CopyPool, a Uniswap V4 liquidity-automation platform for auto-range, auto-compound and automated exits
- Deployed upgradeable V4 automation contracts (range, compound, exit) live on Base mainnet, covered by Foundry fuzz and invariant tests
- Cut contract gas costs by about 30% and reviewed contracts with Slither and Echidna
- Built Ponder indexers and backend monitors that trigger on-chain automation and feed the Next.js dashboards
- Owned architecture, security review, testing strategy and production deployment as team lead
Solidity, Uniswap V4, Foundry, Base, Ponder, viem
May 2026 – Sep 2026
Full Stack AI / Blockchain Lead, OrzenHQ
- Led blockchain engineering across Web3, AI and automation products, owning smart-contract, API and deployment decisions
- Built AI-assisted blockchain workflows that put LLM agents into product features and internal developer tools
- Designed wallet flows, transaction systems and on-chain infrastructure for production apps
Solidity, TypeScript, LLM Agents, CI/CD
Nov 2024 – Oct 2025
Senior Blockchain Developer (Full Stack), KalpStudio
- Led end-to-end architecture of a multi-tenant blockchain platform that runs automated on-chain transactions daily through a Web3Function service
- Built SSO user and org onboarding with self-custodial, custodial and MPC wallets on EVM and Kalptantra
- Architected GINI token purchase through KALP-PAY plus KALP-KYC onboarding, cutting onboarding friction by about 70%
- Built signing and transfer modules and an API gateway that processed 5K+ gasless meta-transactions; led a team of 5
React, Node.js, PostgreSQL, RabbitMQ, Web3.js, Chainalysis, BitGo
Nov 2023 – Nov 2024
Senior Blockchain Developer, Mai Labs
- Shipped 15+ production contracts for lending, staking and yield aggregation, holding $2M+ TVL with zero security incidents
- Built a Go indexing service handling 1M+ transactions per day at 99.9% uptime, 40% faster than the Node.js service it replaced
- Ported OpenZeppelin-style libraries to Go; integrated LayerZero and Axelar bridges across 5 EVM networks
Solidity, Go, OpenZeppelin, LayerZero, Axelar
Nov 2022 – Dec 2023
Developer Relations Engineer, CredShields
- Gave 10+ talks and workshops on smart-contract security and grew the developer community about 3x
- Contributed to automated smart-contract auditing tools that cut preliminary audit time by about 60%
Smart Contract Security, Solidity, DevRel
Mar 2020 – Oct 2022
Web3 Developer (open source and hackathons), Independent
- Built and shipped web and Web3 projects in public on GitHub, from early web apps to NFT and DeFi dApps
- Won Polygon BUIDL IT 2021 (1st prize, NFTable), ETHIndia 2022 sponsor prizes (Meet3Club) and an ETHGlobal HackFS prize
- Started leading the Polygon Guild Lucknow developer community in January 2022
Solidity, JavaScript, React, Hardhat, Polygon, IPFS
Tailored versions: AI labs, YC startups, Web3
Community
- Hackathon Organizer & Technical Lead, KalpStudioNov 2024 – Oct 2025
- Chapter Lead & Technical Evangelist, Polygon Guild LucknowJan 2022 – Present
Awards
10 hackathon wins and a Gitcoin grant
2025
- ETHGlobal Agentic Ethereum, Best use of Coinbase Developer Platform
- Seedify AI Agents Hackathon, Best Infra & Framework
- EDU Chain Hackathon, Semester 2, Best DeFi (Best DeFi Staking dApp, top 5 DeFi)
2024
- Encode Club Bangkok Bitcoin Hackathon, 1st place
- ETHGlobal Bangkok, Best use of Chronicle
- ETHOnline, Best Developer Tooling (Blockless)
2023
- Gitcoin Grants DeSci round, $10K grant
- Hack FEVM, Best DeFi
2022
- ETHIndia, Huddle01 3rd prize, plus NFTPort, Covalent, ENS and StackOS prizes (Meet3Club)
- ETHGlobal HackFS, Protocol Labs prize
2021
- Polygon BUIDL IT, 1st prize, Best Web3 Integration with Trell (NFTable)
About
I'm a full stack engineer from Lucknow, India. I started building software in 2020, have won 10 hackathons since 2021, and have spent 6+ years shipping systems across DeFi, wallets and AI products.
Most of my work sits where AI products meet onchain systems: LLM features with guardrails that stop the model from inventing facts, agents that run in sandboxes with hard budget limits, and Solidity contracts that move real money. I work in TypeScript, Next.js, Node.js, Python and Solidity, and I care about the whole product, from the database schema to the billing page.
- AI
- LLM Agents, Anthropic Claude, OpenAI, OpenRouter, Prompt Engineering, Structured Outputs, E2B Sandboxes, AI Guardrails
- Blockchain
- EVM, Uniswap V4, DeFi, ERC-20/721/1155/4626, UUPS Proxies, EIP-712, ERC-4337, MEV, Chainlink CCIP, LayerZero, Ethereum, Base, Arbitrum, Polygon, Robinhood Chain, Solana, Foundry (fuzz, invariant), Hardhat, OpenZeppelin, Slither, Echidna, Ponder, The Graph
- Languages
- TypeScript, JavaScript, Solidity, Python, Go, Rust, SQL
- Frameworks
- Next.js, React, Node.js, NestJS, FastAPI, viem, wagmi, ethers.js
- Data and infra
- PostgreSQL, Redis, MongoDB, SQLite, Docker, Railway, AWS, Cloudflare R2, CI/CD, Kubernetes
- Education
- B.Tech, Computer Science and Engineering, Dr. A.P.J. Abdul Kalam Technical University (AKTU)
Questions
Who is Prabal Pratap Singh?
Prabal Pratap Singh (Prabal Parihar) is a Senior Full Stack Engineer from Lucknow, India, with 6+ years of experience (since 2020) building AI products and blockchain systems. Prabal is Full Stack Blockchain Lead at Warlands and has built AI products such as Testimonia and Lettercape.
What AI products has Prabal Pratap Singh built?
Testimonia, a testimonials SaaS with AI co-writing that never invents reviews; Lettercape, an AI email-campaign builder; TradeAgent, a Polymarket research agent that combines Grok and GPT forecasts; Opportunity Studio, an autonomous coding-agent pipeline that runs Claude Code and Codex in E2B sandboxes; and Landpatch, a GitHub App that migrates code off the shut-down OpenAI Assistants API and opens a pull request only after the patch passes sandbox verification; and Twokey, an approval layer for AI agents that move money, where deterministic policy code decides and risky payments wait for a hash-bound human approval.
What blockchain and DeFi experience does Prabal Pratap Singh have?
Prabal shipped 15+ production Solidity contracts holding $2M+ TVL at Mai Labs, architected CopyPool (Uniswap V4 liquidity automation, live on Base mainnet) at Warlands, built MPC and custodial wallet platforms at KalpStudio, and built on-chain identity and KYC contracts with UUPS proxies and Groth16 ZK verification. Prabal has shipped on Ethereum, Base, Arbitrum, Polygon and Robinhood Chain and tests contracts with Foundry fuzz and invariant tests, Slither and Echidna.
What is Prabal Pratap Singh’s tech stack?
TypeScript, Next.js, React, Node.js, NestJS, Python, FastAPI, Solidity, Foundry, Hardhat, PostgreSQL, Redis, BullMQ, Anthropic Claude, OpenAI and OpenRouter, deployed with Docker, Railway and AWS.
Where can I see Prabal Pratap Singh’s work?
Case studies for 15 projects are at prabal.pro/#work, including Testimonia (testimonia.xyz), Lettercape (lettercape.com), Collabcape (creators.witlabs.org), CopyPool (copypools.com) and BuilderFi (builderfi.io). Code is at github.com/PrabalParihar.
Is Prabal Pratap Singh available for hire?
Yes. Prabal is open to remote roles and contracts at AI and crypto companies, working from Lucknow, India (IST, UTC+5:30) with US and EU time-zone overlap. Contact: prabalparihar95@gmail.com.