Staff Fullstack Engineer at Morpho Labs | Jobyssey

You will architect and own end-to-end delivery of DeFi products, working from React/Next.js frontends through GraphQL and REST APIs to blockchain data indexers. You will design and implement API and SDK strategies, build and optimize high-performance data systems processing on-chain events across multiple blockchains, and lead architecture reviews. You will establish coding standards, drive reliability through observability and incident response using OpenTelemetry, Grafana, and Sentry, and ship major product initiatives from scoping to production.

Responsibilities

Architect and own end-to-end delivery of DeFi products from frontends through APIs to blockchain data indexers, ensuring sub-second response times
Design and implement API and SDK strategy, including versioning patterns, developer experience standards, and real-time streaming systems
Build and optimize high-performance data systems processing millions of on-chain events across 15+ blockchains using intelligent caching and query optimization
Lead technical architecture reviews and establish coding standards to raise engineering capability across product teams
Own observability and incident response across the stack using OpenTelemetry, Grafana, and Sentry

Requirements

8-10+ years building fullstack applications at scale, with demonstrated impact on business metrics
Proven track record architecting high-availability systems handling millions of requests daily
Deep TypeScript expertise across client and server, including React/Next.js, GraphQL (Apollo Server), and Node.js
Experience with typed contract interactions (viem)
Hands-on experience building or maintaining on-chain data indexers (Ponder, Subsquid, or similar) and working knowledge of EVM event structures
Track record of leading technical initiatives across multiple teams without direct authority
Comfort operating in fast-changing, ambiguous environments
Strong ownership mindset and ability to drive things to completion
Clear, crisp asynchronous communication and ability to explain complex technical decisions simply
Team-first approach and humility

Benefits

Real flexibility
Time together in Paris
Great health coverage
Support to keep learning

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