Staff Software Engineer London, England, United Kingdom London, England, United Kingdom

Location: London, England, United Kingdom

Work Location: This role is based out of our London office and follows a hybrid schedule. We rely on in-person collaboration and ask that team members work onsite Tuesdays through Fridays, with the flexibility to work remotely on Mondays, unless there is an approved workplace accommodation. We believe that connection fuels innovation, and our in-office culture is designed to foster meaningful teamwork, mentorship, and shared success.

What You'll Do

• Lead technical directionand architecture for key systems powering Axon Assistant across backend, mobile, and edge-device surfaces.
• Design and buildhigh-performance, fault-tolerant servicesfor AI feature delivery, real-time communication, and intelligent user interaction.
• Evaluate and integrateLLMs and other AI/ML modelsfor use in production - ensuring safe, performant, and explainable application of language technologies.
• Own complex decision-making processes, such asmodel selection vs. deterministic logic, tradeoffs in latency, data retention, cost, and user trust.
• Work closely with PMs, Applied AI teams, and UX engineers to align technology decisions with user experience and product strategy - helping ensure that assistant-style interactions feel fluid, contextual, and intelligent.
• Write and review production code (Node.js, Python, or equivalent) and mentor engineers across the team in high-quality engineering practices.
• Lead cross-functional technical investigations, root cause analyses, and high-risk launches with ownership and clarity.
• Bring order and forward momentum to ambiguous and evolving requirements - without losing sight of long-term architectural health.

• 10+ years of experience in software engineering, including3+ years in Staff-level or equivalent roles.
• Proven experiencedesigning and delivering complex backend systems, ideally in distributed or real-time environments.
• Hands-on experience building and deployingAI/ML-powered systems, especially with LLMs, NLP services, or multimodal interfaces.
• Deep understanding ofcloud infrastructure, service reliability, and secure system design (AWS, GCP, or Azure).
• Advanced fluency in at least one backend language such asNode.js,Python, orGo, with a focus on scalable, testable design.
• Strong architectural thinking and judgment - with the ability to navigate ambiguity and drive consensus.
• Experience with real-world deployment constraints, includingmulti-region scaling, privacy compliance, and observability.
• Ability to influence, mentor, and lead across engineering boundaries without formal authority.

• Experience building assistant-style interfaces or integrating LLMs in production settings.
• Background working in regulated domains orhigh-trust product environments(e.g., public safety, healthcare, financial services).
• Contributions to open-source AI tooling or relevant community work.
• Familiarity withon-device compute constraints, edge inference, or hybrid client/cloud architecture.

• Competitive base salary and RSUs.
• Comprehensive pension plan with matching contribution
• Private health insurance & cash plans
• 30 days paid holiday + UK public holidays
• Enhanced maternity/paternity leave
• Life assurance & income protection
• Career growth support and wellness resources

Benefits listed herein may vary depending on the nature of your employment and the location where you work.

Don't meet every single requirement? That's ok. At Axon, we Aim Far. We think big with a long-term view because we want to reinvent the world to be a safer, better place. We are also committed to building diverse teams that reflect the communities we serve.

Studies have shown that women and people of color are less likely to apply to jobs unless they check every box in the job description. If you're excited about this role and our mission to Protect Life but your experience doesn't align perfectly with every qualification listed here, we encourage you to apply anyways. You may be just the right candidate for this or other roles.

The above job description is not intended as, nor should it be construed as, exhaustive of all duties, responsibilities, skills, efforts, or working conditions associated with this job. The job description may change or be supplemented at any time in accordance with business needs and conditions.

Some roles may also require legal eligibility to work in a firearms environment.

Axon's mission is to Protect Life and is committed to the well-being and safety of its employees as well as Axon's impact on the environment. All Axon employees must be aware of and committed to the appropriate environmental, health, and safety regulations, policies, and procedures. Axon employees are empowered to report safety concerns as they arise and activities potentially impacting the environment.

We are an equal opportunity employer that promotes justice, advances equity, values diversity and fosters inclusion. We're committed to hiring the best talent - regardless of race, creed, color, ancestry, religion, sex (including pregnancy), national origin, sexual orientation, age, citizenship status, marital status, disability, gender identity, genetic information, veteran status, or any other characteristic protected by applicable laws, regulations and ordinances - and empowering all of our employees so they can do their best work. If you have a disability or special need that requires assistance or accommodation during the application or the recruiting process, please . Please note that this email address is for accommodation purposes only. Axon will not respond to inquiries for other purposes.