Software Engineer - Integrations

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. About Mark43 Mark43 empowers communities and their governments with technology that improves safety and quality of life. We build modern, resilient software that first responders and public safety agencies depend on in their most critical moments. Role Overview We are seeking an experienced Software Engineer – Integrations who will take technical ownership of building and scaling integrations between Mark43’s core platform and mission‑critical third‑party systems. You’ll lead the design, development, and implementation of robust APIs, data pipelines, and messaging layers, ensuring seamless operational data flow for emergency dispatch and response systems. This is a hybrid role requiring at least three days per week in our Manchester office to support strong team collaboration. What You’ll Do Lead full lifecycle development of integrations that connect the Mark43 platform with external systems such as 911 call centers, state databases, evidence systems, and other key services. Drive architectural decisions and ensure scalable, maintainable solutions across REST APIs, message queues, and event‑driven workflows. Collaborate closely with Product, Engineering, and partner technical teams to define reliable API contracts and integration patterns. Help elevate coding standards and code reviews. Contribute to integration testing strategies, observability, and dashboards to monitor operational data flows. Champion best practices for performance, security, and error‑handling in distributed systems. Participate in sprint planning, roadmap discussions, and technical strategy across the integrations team. What You’ll Need 3+ years of professional software engineering experience , with a strong focus on backend services, distributed systems, and system integrations. Proven ability designing and operating APIs, webhooks, or asynchronous messaging systems Experience with languages and technologies relevant to our stack such as Java, TypeScript/JavaScript, RESTful services, SQL/MySQL, and data pipelines. Strong communication skills and the ability to work with cross‑functional partners. Nice to Have: Prior experience in public safety, government software, or regulated domains. Familiarity with CI/CD pipelines, observability tooling, and cloud‑native practices. 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 AI tooling including Claude Code Enterprise and ChatGPT Enterprise licences provided Spring Health membership with therapy sessions and mental wellness tools, fully covered Company performance-based bonus Paid sabbatical of one month at your five-year anniversary Biannual hackathons , learning budget, and a team that genuinely invests in your growth What We Value Humility. You know the best ideas win, no matter where they come from. You ask questions before making assumptions and you're as happy being wrong as being right, because either way, the team gets to a better answer. Inclusivity. You respect expertise in all its forms and actively seek out perspectives different from your own. You make space for others and assume good intent. Excellence. You care about quality in your code, your reviews, and how you communicate. You're not satisfied with "it works" when it could be better, and you encourage the same standard in those around you. Diligence. You take ownership, mind the details, and understand that the software we build is used in…