Senior Full Stack Engineer
Mark43 · Manchester ·
- Work mode
- Hybrid
- Seniority
- Senior
- Category
- Fullstack
- Visa sponsorship
- No
- Company size
- 51-200
- Salary
- GBP 90,000 – 105,000 / year
Mark43 · Manchester ·
singu · Cracow or Warsaw
Walter · Mexico
the.good.code; · Remote
Build cloud-native public-safety software for UK police forces using React, Java, Spring Boot, MySQL, and AWS; shape AI-driven engineering workflows.
Applicants must be authorized to work for any employer in the country in which the role is being hired. We are unable to sponsor or take over sponsorship of an employment visa at this time.
Mark43 is a public safety technology company trusted by over 200 police forces worldwide. We build cloud-native software on AWS that police forces and emergency services rely on in their most critical moments, from managing custody records to dispatching officers in the field.
Our UK team of 25 is based in Central Manchester, helping British police forces replace outdated, fragmented systems with modern, resilient software. We're part of a 400-person global company, but the UK team operates with startup energy: small enough that your work is visible, big enough that you're backed by serious investment.
We're hiring Senior Software Engineers who want to build systems that genuinely matter.
What You'll Do
You'll work across the full stack, building the software that UK police custody suites depend on every day. Our team owns features end-to-end, from database migration to UI and our stack includes:
We're also genuinely investing in how AI changes the way we build software. We don't just use Copilot for autocomplete. We're building agentic workflows into our development process, using tools like Claude Code to automate routine work, accelerate code review, and let engineers focus on the problems that actually need human judgement. If you're excited about shaping how a team works with AI, not just using it, this is the place.
If you were on the team last week, you might have:
What You'll Need
You write clean, maintainable code and care about the impact of your work. We're an AI-first team. AI tools are part of how we work every day — writing code, reviewing pull requests, investigating issues, and automating routine work. We expect you to be comfortable working alongside AI and keen to push what's possible with it.
You should have:
What We Offer
What We Value
Location
This role is based at our Central Manchester office and follows a hybrid work model.
Applicants must be authorised to work in the UK. We are unable to sponsor or take over sponsorship of an employment visa at this time.
This role may require you to complete Non-Police Personnel Vetting (NPPV) security clearance up to level 3.
Mark43 is approved to hire in Canada, the UK, and 36 U.S. states, including Alabama, Arizona, California (excluding San Francisco), Colorado, Connecticut, Washington D.C., Florida, Georgia, Iowa, Idaho, Illinois, Indiana, Kansas, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, North Carolina, Nebraska, New Hampshire, New Jersey, New Mexico, New York, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, Tennessee, Texas, Utah, Virginia, Vermont, Washington, Wisconsin, and West Virginia. Before applying to a remote role, please ensure that you are able to perform the position in one of the states listed above. State locations and specifics are subject to change as our hiring requirements shift.
Our Privacy Notice describes how Mark43 uses and protects the personal information of prospective employees during the recruitment process. It informs you about our handling of the personal information you provide to us when you apply for a position in our organization and in general when you express your interest in joining our team.
As a part of Mark43's security measures all employees must: Engage in appropriate use of the company's electronic information resources; Become knowledgeable about and follow relevant security policies and guidelines; Protect the resources under their control, such as passwords, computers, and data that they create, receive, or download; and Promptly report security-related incidents and violations, and responding to official reports of security incidents involving their systems or accounts.
Mark43 is committed to the full inclusion of all qualified individuals. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex disability, age, sexual orientation, gender identity, national origin, veteran status, or genetic information. As part of this commitment, we will ensure that persons with disabilities are provided reasonable accommodations. If reasonable accommodation is needed, please email [email protected] requesting the accommodation.