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Mark43 via Greenhouse

AI - Enabled Software Engineer

Level not stated United Kingdom
still open verified 2h ago posted 509d ago checked 2h ago

Posted 509 days ago, which is unusual. The employer's own board was still carrying it when we last read it, 2 hours ago.

Apply at mark43.com

This is the employer's own posting, not a copy on a job board.

What we know

Is it still open?

Confirmed still open

Last checked 2h ago — checked against the employer's own applicant tracking system, which is the company answering directly.

We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.

Check this listing's status as JSON

How old is it?

Posted 509d ago

The date the source published, not the day we noticed it (2025-04-24). Last seen at its source 2h ago.

Is it remote?

The listing says yes

The location field doesn't say remote, so our assessment is based on the title or the description. Read the listing before applying.

Who may apply?

United Kingdom

The description states no restriction of its own. This is the source's own tag.

Pay not stated

Similar roles pay £75k–123.8k/yr

Middle 50% of 62 listings that do state pay — Engineering · all levels · United Kingdom · GBP/year. This employer has published no salary; this is what comparable listings we hold disclose, never converted between currencies or periods. How this is calculated.

Skills named in the ad

A/B TestingGitIncident ManagementJavaLLMLangChainMySQLReactTypeScriptUI

Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.

Carried by 1 source

The listing

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 new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team. 

Our platform is already trusted by major public safety agencies across North America—including Boston, D.C., Seattle, and the California Highway Patrol—and we’ve expanded into the UK. 

Now, we’re entering an exciting new chapter: Mark43 is building a next-generation AI-augmented engineering team. This is a foundational opportunity to help rethink how software is designed, developed, and delivered using intelligent agentic or related tools. 

What You’ll Do 

We’re looking for a Software Engineer to help lead our AI-enabled engineering initiative. You’ll work at the frontier of AI and software development, experimenting with agentic workflows and shaping how AI tools are integrated into every layer of our engineering stack. 

This isn’t just about using AI to autocomplete code—it’s about designing and orchestrating systems of AI agents that can plan, write, review, test, and deploy software collaboratively. In essence, you’ll play a role akin to a tech lead for a team of intelligent coding agents. 

You will: 

  • 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 

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

  • 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 

 

What You’ll Need 

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. 

You should have: 

  • 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—whether it’s 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.  

People Who Thrive on Our Team Also Tend to Be: 

  • 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 

 

 

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 con

Apply at mark43.com