Senior Software Engineer, CCIP

About Chainlink

Chainlink is the industry-standard oracle platform bringing the capital markets onchain and powering the majority of decentralized finance (DeFi). The Chainlink stack provides the essential data, interoperability, compliance, and privacy standards needed to power advanced blockchain use cases for institutional tokenized assets, lending, payments, stablecoins, and more. Since inventing decentralized oracle networks, Chainlink has enabled tens of trillions in transaction value and now secures the vast majority of DeFi.

Many of the world’s largest financial services institutions have also adopted Chainlink’s standards and infrastructure, including Swift, Euroclear, Mastercard, Fidelity International, UBS, S&P Dow Jones Indices, FTSE Russell, WisdomTree, ANZ, and top protocols such as Aave, Lido, GMX and many others. Chainlink leverages a novel fee model where offchain and onchain revenue from enterprise adoption is converted to LINK tokens and stored in a strategic Chainlink Reserve. Learn more at chain.link.

About The Role

This role exists to design and operate the core services that enable secure, fault-tolerant cross-chain transactions within the CCIP protocol. It is responsible for strengthening the reliability, performance, and security of interoperability infrastructure under adversarial conditions. The role directly impacts protocol trust, integration velocity, and long-term ecosystem growth.

Your Impact

• Deliver backend services that coordinate fast, fault-tolerant cross-chain transactions across multiple blockchain ecosystems
• Improve system reliability and resilience under adversarial conditions to strengthen protocol trust and uptime
• Reduce transaction processing latency through optimizations in RPC usage and system performance
• Enable seamless integration across EVM and non-EVM ecosystems, accelerating adoption of CCIP
• Increase throughput to scale CCIP to support thousands of concurrent cross-chain transfers without degradation or backlog
• Build internal systems that allow rapid debugging, replay, and resolution of failed transactions

Requirements

• Demonstrated strong backend engineering experience using Go, Rust, or TypeScript in production systems
• Proven track record contributing to or building within crypto-native projects
• Designed systems with security and reliability as foundational principles, particularly in adversarial or distributed environments
• Built or operated backend systems that prioritize fault tolerance, consistency, and high availability

Preferred Requirements

• Demonstrated knowledge of DeFi protocols and ecosystem dynamics
• Experience working with cloud infrastructure and containerized systems in production environments
• Hands-on experience interacting with blockchain bridges or interoperability protocols
• Understanding of security risks specific to cross-chain or bridge-based architectures
• Familiarity working with non-EVM ecosystems such as Solana, Aptos, or similar
• Experience debugging and operating distributed systems at scale

_All roles with Chainlink Labs are global and remote-based. Unless otherwise stated, we ask that you try to overlap some working hours with Eastern Standard Time (EST).

__We carefully review all applications and aim to provide a response to every candidate within two weeks after the job posting closes. The closing date is listed on the job advert, so we encourage you to take the time to thoughtfully prepare your application. We want to fully consider your experience and skills, and you will hear from us regarding the status of your application shortly after the closing date.

_Commitment to Equal Opportunity

Chainlink Labs is an equal opportunity employer. All qualified applicants will receive equal consideration for employment in compliance with applicable laws, regulations, or ordinances. If you need assistance or accommodation due to a disability or special need when applying for a role or in our recruitment process, please contact us via this form.

Global Data Privacy Notice for Job Candidates and Applicants

Information collected and processed as part of your Chainlink Labs Careers profile, and any job applications you choose to submit, is subject to our Recruiting Privacy Policy. By submitting your application, you are agreeing to our use and processing of your data as required.