Description
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Our UK team of 25 is based in Central Manchester, helping British police forces replace outdated, fragmented systems with modern, resilient software.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 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, so you'll get broad exposure regardless of your starting point. Our stack includes:
- Frontend: React, TypeScript
- Backend: Java, Spring Boot
- Data: MySQL, GraphQL
- Infrastructure: AWS, Kubernetes, Argo CD, Terraform
- Observability: Datadog
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:
- Shipped a new workflow for custody officers processing detainees, from GraphQL schema through to React components
- Investigated a production issue using Datadog traces and logs, then pushed a fix the same day
- Paired with a teammate to untangle a tricky state management problem in a booking form
- Built an agentic workflow that reviews PRs, learns from human feedback, and posts weekly engineering highlights to Slack, all automatically
- Written a database migration and the integration tests to prove it works under load
- Reviewed a pull request, spotted a change that would unintentionally affect other parts of the app, and proposed a safer approach in the comments
- Prototyped a new idea at one of the hackathons we run twice a year, a chance to experiment with new tech, explore wild ideas, and ship something fun with no constraints
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:
- Professional software engineering experience (or a CS degree with internship experience for graduate roles)
- Experience with at least part of our stack: Java, JavaScript, TypeScript + React, and MySQL
- Curiosity about AI-assisted development tools like Claude Code and how they can improve your workflow
- A collaborative mindset and strong communication skills
What We Offer
- 28 days holiday plus UK bank holidays
- Private medical, dental, and vision insurance through AXA Health and BUPA, fully paid for you and your dependents
- 18 weeks paid parental leave for primary caregivers plus a ramp-back programme
- Income protection (75% of salary) and death in service cover (4x salary), fully paid
- Pension through Nest with 3% employer contribution
- Gym reimbursement for you and your partner
- Equipment allowance to set up your home office
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