The Role
Design, implement, and optimize Solidity smart contracts (rewards, airdrops, staking, referrals). Build secure claim mechanisms (Merkle proofs, signatures), integrate contracts with backend systems, conduct contract reviews, and contribute to multi-chain architecture and security best practices.
Summary Generated by Built In
This is a remote position.
Role Overview
We’re looking for a Solidity Developer to help design and build the smart contract infrastructure powering the project’s reward and distribution systems.
You’ll work closely with backend engineers, product leadership, and infrastructure teams to build secure, scalable, and production-ready blockchain systems across multiple EVM networks.
This is a high-ownership role suited for engineers who are comfortable working on architecture, security, optimization, and real-world Web3 product challenges.
Tech Stack
- Blockchain
- Solidity
- Hardhat
- Ethers.js
- OpenZeppelin
- Backend Collaboration
- Node.js
- NestJS
- PostgreSQL
- Supabase
Infrastructure
- Docker
- GitHub Actions
- Vercel
- IPFS
Responsibilities
- Design and develop Solidity smart contracts for:
- reward distribution
- airdrop claim systems
- referral and staking logic
- wallet eligibility verification
- Implement secure claim mechanisms:
- Merkle proof systems
- signature-based validation
- role-based permissions
- Optimize contracts for:
- gas efficiency
- scalability
- security
- Integrate contracts with backend services and event-driven systems
- Collaborate with backend and frontend teams on wallet flows and transaction logic
- Conduct internal contract reviews and contribute to security best practices
- Participate in architecture discussions for multi-chain infrastructure
Requirements
- 3+ years of Solidity development experience
- Strong experience with:
- Hardhat
- Ethers.js
- OpenZeppelin
- TypeScript
- Deep understanding of:
- smart contract security
- gas optimization
- EVM internals
- upgradeable contracts
- Experience deploying and maintaining contracts on EVM chains such as:
- Ethereum
- Polygon
- Arbitrum
- Base
- Experience integrating smart contracts with backend/off-chain systems
- Familiarity with:
- event indexing
- transaction lifecycle handling
- wallet authentication flows
- Strong Git and collaborative development workflow experience
Nice to Have
- Experience with:
- account abstraction
- EIP-712 signatures
- relayers / gasless transactions
- staking or reward systems
- Previous work on:
- airdrop infrastructure
- high-volume transaction systems
- Web3 analytics or campaign tooling
- Security audit experience
- Rust or Solana ecosystem familiarity
Benefits
- Medical insurance
- Company gadgets
- Paid time off
- Stock options (ESOP)
- Competitive salary and benefits package.
- Opportunities for professional development and growth.
- Collaborative and innovative work environment.
- Chance to work on cutting-edge cloud projects.
- Supportive and inclusive company culture
Skills Required
- 3+ years of Solidity development experience
- Strong experience with Hardhat
- Strong experience with Ethers.js
- Strong experience with OpenZeppelin
- Strong experience with TypeScript
- Experience with Node.js and NestJS for backend integration
- Experience with PostgreSQL and Supabase
- Experience with Docker, GitHub Actions, Vercel, and IPFS
- Deep understanding of smart contract security
- Deep understanding of gas optimization and EVM internals
- Knowledge of upgradeable contracts
- Experience deploying and maintaining contracts on Ethereum, Polygon, Arbitrum, Base
- Experience integrating smart contracts with backend/off-chain systems
- Strong Git and collaborative development workflow experience
- Familiarity with event indexing, transaction lifecycle handling, wallet authentication flows
Am I A Good Fit?
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.
Success! Refresh the page to see how your skills align with this role.
The Company
What We Do
CloudPSO is an IT outsourcing and software development company that offers custom software engineering, managed cloud services, and cybersecurity solutions to help enterprises optimize costs, scale faster, and innovate with confidence.
