Smart Contract Engineer - Ethereum, Soldity
About Clearmatics
Clearmatics is a company specializing in blockchain protocol engineering. We develop decentralized financial market infrastructures that aim to be more open, efficient, and resilient than traditional market structures. Our vision is to address the currently unaddressed problems in the real economy by enabling market participants to trade peer-to-peer and settle within new markets using digital assets that track real-world risk factors. We are actively collaborating with trading and blockchain communities to build this new infrastructure.
Clearmatics, founded in 2015, is committed to open source development and actively participates in the blockchain and cryptography research communities. We also support decentralized infrastructure initiatives.
We are currently seeking a Smart Contract Engineer to join our Layer 1 Engineering team. Familiarity with Ethereum is important as we operate on a similar stack.
Some key areas we work on include blockchain infrastructure optimized for financial use-cases, specific protocols for applications such as smart contract-based derivatives, synthetic assets, cryptocurrency stabilization, scalability, and privacy through cryptography.
Responsibilities
As a Smart Contract Engineer, you will be responsible for developing and maintaining decentralized financial smart contracts on Autonity. These contracts will enable the creation of decentralized risk markets for real-world risk factors. You will work on a variety of problems including smart derivatives, DEX trading and settlement protocols, algorithmic stabilization, data oracles, liquid staking, and more. Collaborating with quantitative researchers and protocol engineers, you will transform research models and prototypes into production-grade Solidity code. Additionally, you will work with Autonity core developers to enhance L1 protocol contracts and integrate new functionality into the Autonity Go Client.
Requirements
- Minimum of 4 years professional experience in software engineering
- Minimum of 2 years of experience in smart contract programming using Solidity
- Bachelor's degree in Computer Science or a related technical field
- Strong knowledge of Eth1 protocols and proof of stake consensus
- Understanding of the DeFi landscape and major DeFi primitives
- Proficiency in Python programming and web3.py Ethereum development
- Experience interfacing with data oracles and P2P data stores (e.g. IPFS)
- Experience working with third-party smart contract auditors
- Contribution to open-source projects in the Web3 space
Bonus Points
- Experience in designing, researching, or implementing Web3 protocols
- Proficiency with the Python scientific computing stack (NumPy, Pandas, Jupyter)
Our compensation is competitive within the blockchain industry and will depend on your skills and experience.
Senior Blockchain Engineer
Protocol Core: Development and optimization of L2-settlement logic on Solidity/Yul.
Bridge Security: Designing secure cross-chain gateways with protection against double spending and reorgs.
Node Infrastructure: Optimizing the interaction of node validators with the EVM stack.
Gas Engineering: Extreme cost reduction for publishing data in L1 (Deneb/Cancun-ready).
Requirements:
Deep knowledge of Solidity (0.8.20+) and Assembly (Yul).
Experience working with Foundry (Fuzzing/Invariants) and understanding the architecture of OP Stack or Arbitrum Orbit.
Skills of working with indexers (The Graph/Envio) and the RPC layer.
Social media manager
Senior Blockchain Engineer
DApp & Smart Contract Developer (Vesting Platform)
This role is ideal for someone who thrives in fast-moving environments, values clean and secure code, and understands the nuances of blockchain-based application architecture.
Responsibilities
Diagnose and resolve issues in vesting smart contracts and their front-end integrations.
Implement new features and system enhancements to improve UX and overall platform performance.
Maintain smooth interaction between the web interface and deployed smart contracts.
Conduct testing, audits, and deployments across testnet and mainnet environments.
Optimize contract logic for performance, security, and gas efficiency.
Collaborate with our engineering team to identify pain points and deliver stable, secure solutions.
Requirements
Proven experience building full-stack decentralized applications.
Strong proficiency in Solidity, JavaScript/TypeScript, and modern frameworks (Angular, React, or Vue).
Hands-on experience with Hardhat or Foundry for smart contract development and testing.
Familiarity with Ethers.js or Web3.js for blockchain interaction layers.
Solid understanding of Ethereum, Polygon, or other EVM-compatible chains.
Experience integrating wallets such as MetaMask and managing on-chain/off-chain data flows.
Strong debugging skills, attention to detail, and a security-first mindset.
Nice to Have
Experience with smart contract security audits and gas optimization techniques.
Knowledge of Node.js-based backend services or API integration layers.
Previous experience with vesting, staking, or token distribution mechanisms.
Project Scope
This role supports a short-to-mid-term initiative focused on stabilizing and enhancing an existing crypto vesting platform. High-performing developers may have opportunities for ongoing collaboration across additional blockchain and product engineering projects.
Hiring Process
Technical Assessment - Selected candidates will complete a short, clearly scoped technical exercises designed solely to evaluate coding approach and smart contract knowledge.
CTO interview - A final discussion to evaluate technical reasoning, architectural thinking, and team fit. Successful candidates may receive an offer through Contra following this conversation.
Senior Blockchain Developer - Ethereum/PulseChain - GAM3S.GG
We're looking for a Senior Blockchain Developer with strong Ethereum/PulseChain smart contract experience to work on our DeFi/GameFi platform. You'll be building and maintaining betting contracts, yield farming mechanisms, token swap systems, and Web3 frontend integrations for our decentralized application on PulseChain.
Key Responsibilities
Smart Contract Development
System Architecture & Integration
Frontend Web3 Integration
Security & Compliance
Performance & Monitoring
Required Technical Skills
Blockchain Expertise
Frontend Web3 Development
Development Tools
Integration & Tools