Senior Software Engineer, Security Agents

Senior Software Engineer, Security Agents

Team: Security

Location: Toronto

Employment type: FullTime

Workplace type: Remote

Remote: yes

Published: 2026-01-15T19:50:08.498+00:00

Who are we?

Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems.

We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that.

We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft.

We are a global technology company co-headquartered in Toronto and San Francisco, with key offices in London, New York City, Montreal, Seoul, Germany and Paris. Join us!

Why This Role?

Ready to build AI agents that revolutionize enterprise security? The North Security team is looking for a Senior Software Engineer to create autonomous systems that handle the complex, critical tasks security practitioners face every day.

Your Role:

As a Senior Software Engineer focused on agentic security, you'll build intelligent systems that empower security teams. Your responsibilities will include:

• Build autonomous security agents that perform alert triage, secure code reviews, threat modeling, and vulnerability assessment

• Develop agent orchestration systems that help security practitioners automate repetitive security tasks

• Design and implement agent security controls to ensure our AI agents can safely interact with sensitive enterprise data

• Create the security infrastructure that allows agents to operate in high-trust environments with stringent deployment requirements

• Ship production-ready agent capabilities that run efficiently in resource-constrained environments

• Research and implement novel security patterns for AI agent systems, sometimes requiring custom solutions where standard libraries fall short

• Conduct security testing of both the agents you build and the platform that runs them.

You may be a good fit if:

• 5+ years of software engineering experience with a track record of shipping user-facing security features

• Strong Python development skills with significant production experience

• Experience building or working with autonomous systems, AI agents, or intelligent automation

• Solid understanding of security principles including session management, authentication, authorization, and secure coding practices

• Ability to think about security at multiple layers: application security, agent behavior security, and infrastructure security

• Comfortable working across the full stack and diving into unfamiliar codebases to understand and fix issues

• Thrive in fast-paced environments where you can adapt to evolving priorities

• Excited about the intersection of AI/ML and security engineering.

If some of the above doesn’t line up perfectly with your experience, we still encourage you to apply!

We value and celebrate diversity and strive to create an inclusive work environment for all. We welcome applicants from all backgrounds and are committed to providing equal opportunities. Should you require any accommodations during the recruitment process, please submit an Accommodations Request Form https://docs.google.com/forms/d/12a6IrLdF3kI2nonKSr4tiFuz18rLQbaeYV-JM9L4o9Q/edit, and we will work together to meet your needs.

We may use AI-enabled tools to screen and assess applicants against the criteria for this position. This helps our recruiters identify potentially qualified candidates, but it doesn't limit the applications our recruiters may review or consider.

Full-Time Employees at Cohere Enjoy These Perks:

• An open and inclusive culture and work environment

• Work closely with a team on the cutting edge of AI research

• A weekly lunch stipend of $75/£75 or equivalent in your local currency for lunch.

• Full health and dental benefits, including a separate budget for mental health.

• RRSP matching, 401K, Pension Scheme.

• 100% Parental Leave top-up for up to 6 months, for either parent.

• Annual enrichment benefits:

• Arts & culture, fitness/wellness, quality time, and a workspace improvement credit.

• Education & learning stipend for conferences, courses, and coaching.

• Remote-flexible, offices in Toronto, New York, San Francisco, London and Paris, as well as a co-working stipend

• 6 weeks of paid vacation (30 working days!)

• Budget for traveling to other offices if you are remote, plus an annual company offsite.

How and Where We Work:

• Cohere is remote-friendly. We have offices in Toronto, San Francisco, New York City, London, Paris, Montreal, and more coming soon.

• For those in the office: a daily lunch program, plenty of snacks, and regular community and social events.

• For those not near an office: a co-working benefit so you can work alongside others in your city.

• Everyone receives a $500 home office stipend to set up your workspace properly.