Security Software Engineer

Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers include the world's leading public cloud and silicon providers and industry leaders in many sectors. The company is a pioneer of global distributed collaboration, with 1200+ colleagues in 75+ countries and very few office-based roles. Teams meet two to four times yearly in person, in interesting locations around the world, to align on strategy and execution.

The company is founder‑led, profitable, and growing.

What you’ll do

Define, implement, and document new security features

Lead security‑focused initiatives within a product engineering team

Analyze, fix, and test vulnerabilities in open source software

Contribute to Ubuntu and upstream open source projects to benefit the community

Audit and analyze source code for vulnerabilities

Integrate new tools into our security infrastructure, pipelines, and processes

Achieve and retain various security certifications

Extend and enhance Linux cryptographic components to meet country‑specific compliance requirements, such as FIPS and Common Criteria (CC) certifications

Work with external partners to develop Center for Internet Security (CIS) benchmarks

Design and develop hardening automation for Ubuntu

Stay up to date with trends and developments in the security industry

Develop, test, and maintain new software capabilities

Provide guidance and support to other engineering teams on security best practices

What we’re looking for in you

An exceptional academic track record from both high school and university

Undergraduate degree in Computer Science or STEM, or a compelling narrative about your alternative path

A track record of going above and beyond expectations

Thorough understanding of the common categories of security vulnerabilities and how to fix them

Knowledge of modern software engineering techniques

Familiarity with open source development tools and methodologies

Skill in one or more of C, C++, Python, Go, Rust, Java, Ruby, PHP, or JavaScript / Typescript

Experience as a security champion

Experience driving security within a wider SSDLC process

Professional written and spoken English

Experience with Linux (Debian or Ubuntu preferred)

Excellent interpersonal skills, curiosity, flexibility, and accountability

Passion, thoughtfulness, and self‑motivation

Excellent communication and presentation skills

Results‑oriented, with a personal drive to meet commitments

Optional skills we value

Clear and effective communication with both the team and Ubuntu community members

Experience working with the Linux kernel

Experience with security certifications and knowledge of FIPS and / or Common Criteria (CC)

Experience with OVAL (Open Vulnerability Assessment Language)

Knowledge of cryptographic modules such as OpenSSL and Libgcrypt

Knowledge of low‑level Linux cryptography APIs

Demonstrated ability to learn quickly

Performance engineering experience

What we offer you

Distributed work environment with twice‑yearly team sprints in person

Personal learning and development budget of USD 2,000 per year

Annual compensation review

Recognition rewards

Annual holiday leave

Maternity and paternity leave

Employee Assistance Programme

Opportunity to travel to new locations to meet colleagues

Priority Pass, and travel upgrades for long haul company events

About Canonical

Canonical is a pioneering tech firm at the forefront of the global move to open source. As the company that publishes Ubuntu, one of the most important open source projects and the platform for AI, IoT and the cloud, we are changing the world on a daily basis. We recruit on a global basis and set a very high standard for people joining the company. We expect excellence – in order to succeed, we need to be the best at what we do. Canonical has been a remote‑first company since its inception in 2004. Working here is a step into the future, and will challenge you to think differently, work smarter, learn new skills, and raise your game.

Seniority level

Entry level

Employment type

Full‑time

Job function

Engineering and Information Technology

Industries

Software Development

Canonical is an equal opportunity employer

We are proud to foster a workplace free from discrimination. Diversity of experience, perspectives, and background create a better work environment and better products. Whatever your identity, we will give your application fair consideration.

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