Senior Backend Engineer - MetaMask (OffChain)

Details

Consensys / MetaMask is seeking a Senior Backend Engineer to build and enhance backend blockchain routing services used across MetaMask clients (Extension, Mobile, Web) and by partners such as Linea and Infura. The role focuses on designing performant solutions, ensuring stability and observability, collaborating with product and engineering teams, and participating in on-call rotations for production services.

Responsibilities

• Build and enhance MetaMask's backend blockchain routing services to enable broad and fast data access across blockchain networks
• Design and implement performant solutions to be used in MetaMask Clients including Extension, Mobile, and Web, along with Linea and Infura customers
• Collaborate with MetaMask, Linea and Infura client teams to ensure requirements are met
• Collaborate with product managers, DevSecOps, SRE, and Network partners to deliver high-quality features
• Ensure performance and stability of existing and new services
• Participate in code reviews and help maintain high code quality standards
• Participate in on-call rotations to support our production services

Requirements

• 3+ years working with backend technologies on production applications
• Strong knowledge of Golang, SQL and messaging systems (NATS, Kafka)
• Familiarity with blockchain fundamentals, client implementations of EVM and EVM equivalent networks, and distributed systems
• Experience building highly performant APIs and serving data at scale
• Good knowledge of implementing observability metrics (Prometheus, Grafana)
• Experience in production grade cloud deployment and AWS tooling
• Experience working in an agile development team
• Experience developing applications with clean code practices, testing, and adherence to coding standards

Bonus Points

• Experience with running nodes on EVM or non-EVM blockchains
• In-depth knowledge of Ethereum execution clients and smart contract standards
• Interest in blockchain technologies and Web3 infrastructure
• Basic understanding of cryptography principles
• Experience working in distributed teams
• Previous experience working in Web3
• Familiarity with the Web3 ecosystem

Other skills to demonstrate

• Good verbal and written communication in English
• Teamwork, flexibility, and organization
• Eagerness to learn and grow your technical skills
• Self-motivated and autonomous in your execution of tasks
• Ability to balance technical quality with business needs and user experience

About MetaMask / Consensys

Consensys is a blockchain and web3 software company (founder: Joe Lubin). Through products including MetaMask, Infura, Linea, Diligence, and Phosphor, Consensys builds infrastructure and tools for the Web3 ecosystem. The organization emphasizes a diverse and inclusive engineering culture, remote-first work across the world, career growth, and continuous learning.

Benefits

• Competitive benefits package
• Equity
• Recognition in the blockchain and Web3 ecosystem
• Continuous learning & opportunities (Consensys Advance Program, Coursera access)
• Unlimited vacation/holidays and company-wide “zero productivity” days
• Flexible working arrangements and remote-first environment

Salary

• US pay range (not including bonus, equity or other benefits): $125,000—$187,000 USD

Notes

• Employment requires background checks (employment, education, criminal record).