Overview

Mark43 is hiring in Manchester, England, United Kingdom for a Senior Software Engineer – AI-Enabled Engineering. Mark43's mission is to empower communities and their governments with new technologies that improve the safety and the quality of life for all. This role sits at the frontier of AI and software development as part of a new AI-augmented engineering team, focused on designing, developing, and delivering software with intelligent agentic tools.

Our platform is trusted by major public safety agencies across North America and the UK, and we are expanding our AI capabilities as part of a next-generation engineering initiative.

Responsibilities

• Design multi-agent systems with coding-focused agents (e.g., code writer, reviewer, tester, deployer)
• Write the prompts, logic, and scaffolding that guide each agent's behavior
• Handle tool use, like enabling agents to access the file system, test runners, version control, and internal APIs
• Evaluate and refine agents' output, performance, collaboration patterns, and feedback loops

Recent team work

• Prototyped a new coding assistant workflow using open-source LLMs and internal knowledge bases
• Led an architecture discussion on agentic build pipelines or automated PR generation
• Collaborated with a cross-functional team to build a fast, AI-powered interface for internal tooling
• Helped define the evaluation framework for AI contributions—accuracy, speed, and impact
• Mentored a teammate on combining TypeScript and AI tools to accelerate UI prototyping
• Explored best practices for safely and securely integrating generative AI into a public sector codebase
• Participated in our on-call rotation

Qualifications

We\'re looking for an experienced software engineer who is eager to build smarter systems by pairing technical expertise with emerging AI tools. You don\'t need to be an AI researcher—but you do need hands-on experience applying generative AI tools to real-world development workflows.

• 5+ years of professional software engineering experience
• Proficiency with at least part of our stack: Java, TypeScript + React, and MySQL
• Extensive applied experience with AI-assisted development tooling—Cursor, Windsurf, LLM APIs, codegen platforms, vector databases, agentic frameworks like LangChain, or custom-built systems
• A strong product mindset and interest in building for real-world impact
• A bias toward experimentation, iteration, and continuous learning
• Comfort operating in ambiguity and helping define best practices in a rapidly evolving space

We’re flexible on which tools you've used—we care more about your ability to learn, adapt, and creatively apply AI in practical settings than checking a specific tech box.

Team and culture

• Humble, open, and curious. You ask questions and seek to understand before making assumptions
• Collaborative by default. You believe the best outcomes come from shared knowledge and ownership
• Mission-driven. You care about building tech that serves the public good
• Comfortable with uncertainty. You\'re energized by open problems and emerging technologies
• Growth-oriented. You embrace feedback, learn from setbacks, and look for ways to get better every day

Equity, inclusion, and accommodations

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. If reasonable accommodation is needed, please email recruiting@Mark43.com requesting the accommodation.

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.

Job details

• Seniority level: Senior
• Employment type: Full-time
• Job function: Engineering and Information Technology
• Industries: Software Development

Location: Manchester / Greater Manchester, United Kingdom