Computer Science jobs in United Kingdom

Mark43 is approved to hire in Canada, the UK, and 45 U.S. states, including 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.

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's mission is to empower communities and their governments with technologies that improve the safety and quality of life for all. We build modern, resilient software that first responders and public safety professionals depend on in their most critical moments. From dispatching emergency services to filing reports that shape public policy, our work directly impacts how governments serve their communities-especially those who need it most.

We are looking for a Software Engineer who is excited to solve real-world problems with tangible societal impact. You'll help build core systems used by public safety agencies around the world, and explore how emerging tools like AI-assisted development can make our engineering team faster, safer, and smarter.
What You'll Do

As a member of our engineering team, you'll ship features that help first responders save lives, navigate emergencies, and keep their communities safe. You'll also help us explore new ways to deliver that impact more efficiently by thoughtfully integrating AI-assisted workflows into our development process.

If you were on the team last week, you might have:

• Built or improved a workflow used by frontline police officers or dispatchers in our cloud-native platform
• Used tools like Cursor or GitHub Copilot to speed up implementation while maintaining high quality
• Partnered with teammates across engineering, product, and design to deliver a new feature end-to-end
• Experimented with using internal AI tools to automate a repetitive coding task or accelerate test coverage
• Fixed a bug affecting real users or improved the resilience of a high-uptime service
• Shared feedback in a retro or mentored a teammate through a tough technical decision

What You'll Need

We're looking for a thoughtful and driven software engineer with 1+ years of professional experience. You care about writing clean, maintainable code-and you're motivated by the idea that your work can help people in the moments they need it most. While you don't need deep AI expertise, we value a genuine interest in using AI tools to make development more effective.

You should have:

• 1+ years of professional software engineering experience or a Computer Science Degree and Internship Experience
• Experience with at least part of our stack: Java, Javascript, TypeScript + React, and MySQL (You will be asked to complete a coderpad test in Java and Javascript)
• Curiosity and comfort with modern development tools, including AI-assisted platforms like GitHub Copilot, Cursor, or LLM APIs
• A collaborative mindset and strong communication skills
• A balance of pragmatism and technical rigor
• A desire to grow quickly on a high-impact, mission-oriented team

People Who Thrive on Our Team Also Tend to Be:

• Mission-driven. You care about building technology that serves the public good and delivers real value to people who rely on it
• Humble, open, and curious. You ask questions before making assumptions, and you value others' perspectives
• Collaborative by default. You see teamwork as the key to strong engineering and impactful outcomes
• Growth-oriented. You embrace feedback, learn from setbacks, and aim to improve a little every day
• Comfortable with uncertainty. You're excited to help define best practices in a fast-evolving space

Location

This role is based in our Manchester, UK office and follows a hybrid work model. Team members are expected to be in the office at least three days per week to foster strong collaboration and a connected team environment.

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 recruiting@Mark43.com requesting the accommodation.