Mozilla

Staff AI & Agentic Systems Engineer

Remote Canada · Staff+

Sponsorship not specified$165k-$220kDetected 6 days ago

PythonGoVector DatabasesLLMsRAGAgentic AILangGraphAI OrchestrationSystems EngineeringResearchLeadershipMentoring

About the role

Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years.
We make pioneering brands like Firefox, the privacy-minded web browser.
Now, with more than 225 million people around the world using our products each month, we're shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies.

Architect Agentic Systems from Zero: Design and deploy production-grade multi-agent frameworks, complex orchestration layers, and custom AI developer tooling.
Balance Speed and Scale: Navigate the tension between rapid prototyping and long-term sustainability, knowing exactly when to cut corners to validate a concept and when to slow down to lay rock-solid architectural foundations.
Accelerate with AI Tooling: Lead by example by extensively leveraging advanced AI coding tools to maximize velocity, while establishing best practices for AI-assisted engineering across the team.
Drive Evaluation and Performance: Implement rigorous frameworks for benchmarking, prompt engineering, and evaluating agent reliability, latency, and accuracy.
Agentic Mastery: You bring 2+ years of direct, hands-on production experience specifically building autonomous workflows, custom tools, and agentic systems.
Experience building developer-facing products, SDKs, or open-source libraries.
Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.
Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled.
Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.

You have 7+ years of professional software engineering experience, particularly in fast-paced environments where you've shipped complex systems from scratch.
A proven ability to judge technical debt.
Deep, everyday proficiency building software with advanced AI coding tools (such as Cursor, Copilot, or custom LLM extensions) to radically speed up delivery.
Deep Experience: You have 7+ years of professional software engineering experience, particularly in fast-paced environments where you've shipped complex systems from scratch.
Pragmatic Architecture: A proven ability to judge technical debt.
Startup Mentality: Prior early-stage startup experience, meaning you are comfortable with ambiguity, pivot quickly based on data, and focus heavily on execution.
AI-Native Workflow: Deep, everyday proficiency building software with advanced AI coding tools (such as Cursor, Copilot, or custom LLM extensions) to radically speed up delivery.
Experience with vector databases and retrieval-augmented generation (RAG) at scale.

Generous performance-based bonus plans to all eligible employees - we share in our success as one team
Rich medical, dental, and vision coverage
Generous retirement contributions with 100% immediate vesting (regardless of whether
Quarterly all-company wellness days where everyone takes a pause together
One-time home-office stipend
Quarterly well-being stipend
Considerable paid parental leave
Employee referral bonus program
Other benefits (life/AD&D, disability, EAP, etc. - varies by country)
Commitment to diversity, equity, inclusion, and belonging

This means we aren't beholden to any shareholders - only to our mission.
When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere.
And you give us a chance to make a difference in your life every single day.

omestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws

This listing is sourced directly from Mozilla's careers page and normalized into a canonical job model.