Senior Protocol & Platform Engineer

We’re hiring a senior engineer to help build Multyr across protocol smart contracts, DeFi vault infrastructure, APIs/subgraphs, and the operations dashboard used to run the system in production.

This is a hands-on role for someone who is genuinely strong across both Solidity and modern full-stack product engineering. You should be comfortable working across Foundry-based contract systems, DeFi vault mechanics, React/Next.js apps, backend integrations, subgraphs, and production deployment environments such as Vercel.

Must-have requirements

• Strong Solidity experience
• Strong Foundry experience
• Proven experience building or maintaining DeFi vault systems
• Strong React and Next.js experience
• Experience shipping and operating applications on Vercel
• Strong TypeScript experience
• Experience integrating smart contracts with backend/API and frontend systems
• Strong debugging ability across protocol, API, infra, and UI layers

What you’ll work on

• Build and maintain Solidity smart contracts powering vault logic and protocol operations
• Work on Foundry-based development, testing, scripting, and deployment flows
• Extend and maintain multi-vault architecture across protocol, APIs, and ops tooling
• Improve dashboard reliability and observability across onchain RPC, subgraph, and backend data flows
• Own contract-to-product integrations end to end
• Improve deployment safety, environment management, and operational readiness in production
• Help shape architecture across core protocol, indexing, APIs, and operator tooling

You should be comfortable with

• Solidity, Foundry, testing, scripting, and deployment workflows
• DeFi vault mechanics, fee flows, withdrawals, routing, automation, oracle dependencies, and protocol guardrails
• React, Next.js, TypeScript, server-side rendering, and internal dashboards
• Vercel deployments, environment variables, build/runtime debugging, and operational troubleshooting
• GraphQL/subgraphs and backend integrations for protocol telemetry
• Working across multiple sources of truth: onchain state, indexed data, embedded manifests, and runtime application state

Ideal experience

• 5+ years of software engineering experience
• Significant hands-on Web3 / DeFi experience
• Real production experience with vault systems, not just token/NFT work
• Experience owning code across smart contracts and frontend/backend application layers
• Strong product sense for internal tools and operator-facing workflows

What success looks like

• You can diagnose and fix issues that cross contracts, subgraphs, API layers, Vercel runtime, and dashboard code
• You can safely ship improvements to vault infrastructure and operator tooling
• You can improve protocol reliability, not just add features
• You take ownership end to end and reduce operational fragility

Nice to have

• Experience with The Graph / subgraphs
• Experience with monitoring, telemetry, and incident response
• Experience with Chainlink, oracle systems, or keeper/upkeep automation
• Experience in lean teams or startup environments