Senior Software Engineer

Role Description

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.

We’re looking for a Senior 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

Qualifications

• 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

Requirements

• Hands-on experience applying generative AI tools to real-world development workflows

Benefits

• 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.

Company Description

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.

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 View email address on remotive.com requesting the accommodation.