Security Engineer, Product Security

Chainlink; Brasil; Remote; BRL 300,000 - 420,000; Full time

Job summary

Chainlink is seeking a Product Security Engineer to help secure our blockchain products. You will build and review security systems, combining hands‑on software engineering with identifying security risks across development workflows.

You will work within the Product Security team to deliver reliable, secure engineering solutions, evaluating risks and showing strong problem‑solving in a fast‑moving, remote‑first environment.

Qualifications

• Proven software development experience with production‑grade code.
• Hands‑on programming in Rust or Go with problem‑solving skills.
• Experience designing or implementing security systems and secure design.
• Experience reviewing security systems and evaluating risks.

Responsibilities

• Design, develop, and maintain security systems for Chainlink products.
• Identify vulnerabilities through systematic reviews.
• Improve reliability of security‑focused software via high‑quality implementation and testing.
• Evaluate security risks to inform decisions and reduce vulnerabilities.
• Deliver security engineering solutions from implementation to deployment.

Skills

Rust

Go

Software development

Security systems

Code review

Risk assessment

Job description

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.

About The Role

As a Product Security Engineer, you will contribute to the security of Chainlink's products by building and reviewing security systems. This role combines hands‑on software engineering with the identification and evaluation of security risks, enabling stronger security decisions throughout development. You will work within the Product Security team to deliver reliable security‑focused engineering solutions.

Your Impact

• Design, develop, and maintain security systems that strengthen the security of Chainlink's products.
• Identify security vulnerabilities and potential attack paths through systematic technical reviews of existing systems.
• Improve the reliability and maintainability of security‑focused software through high‑quality implementation and testing.
• Evaluate security risks and engineering tradeoffs to inform technical decisions and reduce potential vulnerabilities.
• Deliver security engineering solutions from implementation through deployment, incorporating findings from technical reviews.

Requirements

• Demonstrated software development experience, including writing, debugging, and maintaining production‑quality code.
• Hands‑on programming experience in Rust or Go, with the ability to demonstrate effective implementation and problem‑solving.
• Experience designing, building, or implementing security systems, with demonstrated understanding of security considerations in technical design.
• Proven experience reviewing security systems, identifying potential vulnerabilities, and evaluating technical risks.

Preferred Requirements

• A portfolio of prior engineering work, including publicly accessible code contributions or repositories demonstrating software development capability.
• Demonstrated engagement with security engineering through previous technical work, research, or security‑focused projects.
• Experience critically evaluating systems to identify security weaknesses, attack paths, and potential improvements.
• Previously developed and shipped security products, with the ability to explain implementation decisions and technical tradeoffs.
• Experience developing or reviewing systems within Web3 or blockchain environments.
• Previous ownership of large engineering projects or experience leading small technical teams.
• Hands‑on experience with security engineering for AI pipelines or AI‑based systems.

Chainlink Labs is a remote‑first organization and employment eligibility is contingent upon residing in an approved hiring jurisdiction. Team members may work outside their primary country of legal residence for a maximum of 90 days per calendar year. Please discuss your current location, legal residence, and work authorization with your recruiter during your initial conversation. Unless otherwise stated for a specific role, we require working hours that overlap with Eastern Time (ET).

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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