Semiotic Labs - Smart Contract Engineer (EVM Ecosystem)

About Semiotic Labs
Semiotic Labs builds advanced Web3 infrastructure, autonomous agents, and cryptoeconomic protocols that power decentralized finance and data economies. As a core developer team for The Graph, Semiotic Labs is pioneering trustless, efficient, and scalable financial primitives.

Our suite of products includes:

• GraphTally a trust-minimized micropayment system for decentralized service providers.
• Allocation Optimizer: an Agent for dynamic stake distribution across subgraphs in The Graph.
• Dynamic Pricing Algorithm: Adaptive online query pricing for Indexers.
• Holographic Homomorphic Signature Scheme (H2S2): Cryptographic primitive aggregating signatures for efficient verification.
• State-Channel Micropayments (via GraphTally): Off-chain payments minimizing on-chain cost for low-value transfers.
• AutoAgora: AI-powered tool for query pricing and negotiation in The Graph.
• RL & Neural-Network Cost Prediction / zk-SNARK Enhancements AI-driven pricing, verifiable queries, and privacy-preserving proof mechanisms.

Role Overview

We’re seeking a Smart Contract Engineer (EVM-focused) to work across Semiotic Labs’ product suite. You will design and implement smart contracts, build scalable backend services, and develop data-driven dashboards. The work will touch on areas such as on-chain identity, agreements, micropayments, and DeFi logic, while integrating with advanced indexing and delegation mechanics within The Graph ecosystem.

As part of our team, you’ll juggle with:

Smart Contracts

• Design, implement, and deploy secure EVM smart contracts (Solidity).
• Build logic for identity, on-chain agreements, micropayments, and DeFi primitives.
• Conduct audits and optimizations for gas efficiency and security.

Backend Services

• Develop APIs and services integrating smart contracts with off-chain components (Node.js, Go, Python).
• Support products such as GraphTally and Allocation Optimizer with backend logic.
• Implement scalable infrastructure for micropayments, pricing, and staking optimization.

Frontend / Dashboards

• Build UIs for data visualization and interaction, including dashboards for:
• Micropayment activity
• Data providers and indexers (The Graph)
• Delegation and staking optimization
• Liquidation status tracking
• Use React or similar frameworks to create intuitive, data-rich user interfaces.

Integration & Collaboration

• Bridge contract logic with backend services and UI.
• Work with cryptographers, AI researchers, and protocol engineers to integrate cutting-edge tools.
• Contribute across Semiotic’s full suite of products.

Quality & Deployment

• Write tests (unit, integration, end-to-end) across contract, backend, and frontend layers.

• Maintain CI/CD pipelines for EVM deployments across testnets and mainnet.

• Follow best practices in Web3 security and code quality.

• Strong experience designing and deploying Solidity contracts.

• 3+ years backend development (Node.js, Go, or Python).

• Experience with React or other frontend frameworks for dashboards.

• Knowledge of EVM internals, gas optimization, and DeFi building blocks.

• Understanding of staking, delegation, indexers, and liquidation mechanics.

• Strong debugging, testing, and collaborative skills.

Nice-to-Have

• Familiarity with on-chain reputation, identity frameworks, or agreement systems.
• Contributions to open-source Web3 projects.
• Understanding of cryptographic tools like H2S2, zk-SNARKs, or state-channel micropayments.