Machine Learning Research Engineer

4 weeks ago

City of London, United Kingdom Unitary Full time

Machine Learning Research EngineerAbout UsWe’re Unitary, a fast-growing AI startup building Virtual Agents that combine deterministic code, LLM reasoning, and human expertise to automate complex operational workflows. Our technology powers trust & safety systems at scale, analysing millions of images and videos daily for enterprise customers.Backed by Creandum and Plural, with over $25M raised, we’re scaling rapidly and shaping a future where AI can make safe, fair, and reliable decisions online.The RoleWe’re looking for a Machine Learning Research Engineer to pioneer how Virtual Agents are built, deployed, and scaled. You’ll design an “Agent Factory” — a system that can automatically generate agents from captured workflows, combining the speed of code with the reasoning power of AI.Working closely with platform and ML teams, you’ll research, prototype, and productionise capabilities that let AI autonomously build reliable software workflows.What You’ll DoDesign and build the Agent Factory to generate and deploy Virtual AgentsDevelop code-generation and evaluation frameworks for workflow automationIntegrate LLM-based reasoning with deterministic Python systemsBenchmark and iterate on automation quality through experimentationCollaborate with engineers and customer teams to deploy at scaleContribute to Unitary’s ML research community and technical directionAbout YouExpert in Python and experienced with LLMs, Agentic AI, or code-generation systemsStrong engineering fundamentals (software design, testing, DevOps, MLOps)Curious and inventive — comfortable moving between research and implementationCollaborative communicator who thrives in a small, fast-moving teamBonus: experience with workflow orchestration (e.g., Temporal), browser automation (Playwright), CI/CD, Terraform, or scaling ML systems in production.Why UnitaryRemote-first across Europe/North AmericaCompetitive salary + equityFlexible hours and generous parental/sick leaveAnnual budgets for learning and wellbeing3 annual team off-sites in London or EuropeJoin us to push the frontier of agentic automation — where AI learns to build and operate systems that make the internet safer.

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