AI Harness Engineer Help build agents for the future

At Milestone Systems we grow together - and your ideas will help shape our shared future.

Impact & Purpose

Ready to make an impact In this role youll take whats working and turn it into something the whole engineering organization can use.

You help set the standard for how the whole engineering org uses AI not how one team does
New team with a new mandate youre defining the playbook rather than inheriting one
Real constraints that most AI roles dont have: on-prem air-gapped EU AI Act GDPR. Harder problems than the SaaS default

Location

We are looking for anAI Harness Engineer - Help build agents for the futurebasedinSofia Bulgaria (hybrid mode of working).

Role Summary

As an AI Harness Engineer youll be responsible for everything around the AI models: the tooling context setup evaluations guardrails and cost controls that make AI dependable for actual engineering. The first focus is our internal development environment. After that we want your help bringing the same rigor to the AI features and agents going into our products.

Part of the job is being straight with us about where AI doesnt help not only where it does.

What You Will Do:

• Help build and maintain our AI coding setup: the agent loops context handling tool integrations caching and guardrails that keep these tools reliable in a large codebase.
• Take the experiments already working somewhere in the company and turn them into something other teams can pick up and run with.
• Stand up the evaluations and cost tracking we need to tell whether a given tool is pulling its weight.
• Help recommendthe build-versus-buy calls. We should buy most infrastructure; the parts tied to our products or our on-prem and compliance requirements are where building may make sense.
• Work with product teams to bring the same approach to customer-facing AI features inside EU AI Act and GDPR.
• Get engineers on board the right way by showing them pairing with them and writing things down so the change sticks.

What You Bring to the Team:

• 5 years of professional experience as a staff or senior engineer you know the ins-and-outs of software engineering (.NET C JS/TS Java or similar)
• Real hands-on familiarity with todays AI coding tools (Claude Code Cursor Copilot Codex and the like) and the craft around them: context engineering prompting caching tool memory and all the other jazz
• Strong fundamentals. When an agent fails you can work out why and fix it rather than just file a ticket.
• A habit of treating tokens and computing spend as a real budget and a sense ofhow-tobring cost-per-task down.
• The presence to stand in front of experienced skeptical engineers have hard conversations and still bring them with you.
• A view that AI is a powerfultoolbut that engineering judgment is what makes the difference plus enough curiosity to keep up as the field shifts.

How You Will Make a Difference:

• Youve shipped agentic features inproduct customersactually use.
• You have experience under EU AI Act or GDPR or with on-prem and air-gapped deployments.
• Youve set up an internal model gateway LLM monitoring or evaluation tooling.

About the Team

Youll join a new team in the Experience Development Organization a central new international team whose mission is to be our organization to get us on the edge of AI development.

Youll be in a highly collaborate space paired with AI Harness Engineers and collaborating across the organization with AI Acceleration Developer Experience Arcules and Responsible AI stakeholders.

How We Support You:

• Individual development plans aligned with your career goals
• Access to training learning resources and professional development opportunities
• Flexible hybrid working arrangements
• Supportive leadership and regular feedback
• Opportunities for cross-functional and international collaboration
• A People First culture built on trust inclusion and empowerment
• Social activities and opportunities to connect with colleagues across the organization

What We Offer:

• Hybrid-friendly / flexible way of working
• 25 days vacation
• Employer covered luxury health and dental packages
• Best Doctors Insurance
• Transportation benefits
• Compliments gift card
• Food vouchers
• Multisport card covered by employer

If youre ready to make a significant impact and take your career to the next level wed love to hear from you!

About Us

Milestone Systems is a leading provider of data-driven video technology software. Our portfolio includes XProtect video management software Arcules video surveillance as a service and BriefCam analytics. We amplify what organizations of any size can see do and achieve with video. Guided by our People First mindsetfreedom inclusion and togethernesswe always consider our employees partners and communities in everything we do.