Senior Software Engineer Connectivity

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.

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