Blockchain Platform Engineer

WORLD ENVIRONMENTAL ORGANIZATION; San Francisco (CA); On-site; USD 191,000 - 225,000; Full time

Benefits offered by this job

Healthcare

Dental

Vision

401(k) plan

Flexible time off

Commuter benefits

Professional development stipend

Job summary

Tools for Humanity (TFH) is seeking a senior backend engineer to help build and operate the crypto platform infrastructure powering World. You will work on transaction execution, state access, and on-chain workflows, collaborating with product, protocol, infrastructure, and security teams to ensure reliability at scale.

Ideal candidates have experience with Ethereum/EVM, distributed systems, and roadmap ownership.

Qualifications

• Experience building production backend systems in Go, Rust, or TypeScript.
• Experience with distributed systems, reliability engineering, or high-throughput backend services.
• Familiarity with Ethereum, EVM-based chains, smart contracts, or ERC-4337.
• Experience with event-driven systems, indexing pipelines, or workflow orchestration tools such as Temporal.
• Strong debugging skills across service boundaries, external providers, and blockchain infrastructure.
• A pragmatic approach to security, correctness, and operational excellence.

Responsibilities

• Write clean, efficient, and maintainable code in Go, Rust, and TypeScript.
• Design and implement highly reliable services for transaction execution, state access, calldata construction, smart contract interaction, and event ingestion.
• Build and extend secure indexing and data processing pipelines using Temporal as the orchestration layer.
• Develop and maintain smart contracts required by product workflows.
• Improve the resilience of blockchain reads and writes through RPC load balancing, failover strategies, multiprovider redundancy, and transaction simulation.
• Own features from design through deployment, including technical design, documentation, testing, observability, and operational readiness.
• Partner with product engineering, protocol, infrastructure, and security teams to deliver scalable, fault-tolerant on-chain systems.
• Contribute to monitoring, alerting, incident response, and long-term maintenance of production services.
• Help define platform abstractions that make it safer and easier for product teams to build on-chain experiences.

Skills

Backend development

Distributed systems

Ethereum / EVM familiarity

Temporal workflows

Debugging across services

Security and reliability

Tools

Temporal

Job description

Tools for Humanity (TFH) is seeking a senior backend engineer to help build and operate the crypto platform infrastructure powering World. You will work on transaction execution, state access, and on-chain workflows, collaborating with product, protocol, infrastructure, and security teams to ensure reliability at scale.

Ideal candidates have experience with Ethereum/EVM, distributed systems, and roadmap ownership.