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Justworks logo
Justworks

Justworks allows entrepreneurs to focus on their work, growing a business, and supporting a healthy team. The company takes care of benefits, payroll, and every

Senior Software Engineer, AI

Location

United Kingdom

Posted

50 days ago

Salary

£132K - £170K / year

Seniority

Senior

Bachelor Degree5 yrs expEnglish

Job Description

Senior Software Engineer, AI

Justworks

• Design, build, and own core components of the agent platform, from the orchestration layer to the tool integrations connecting it to internal systems. • Build and evolve the capabilities layer: APIs, data access patterns, and service integrations for agents to execute operational workflows. • Architect the knowledge and memory infrastructure, allowing agents to retrieve the data and act across our systems. • Design and implement the trust and safety framework, including audit trails, human-in-the-loop controls, and guardrails for safe and auditable AI-driven operations. • Contribute to agent evaluation and testing infrastructure, defining how we measure accuracy, reliability, and regression across agent behaviors. • Partner directly with Operations to understand workflows, identify automation opportunities, and translate process knowledge into agent capabilities. • Mentor other engineers on the team as it grows.

Job Requirements

  • Holds at least 5 years of backend systems engineering experience
  • Experience with AI/LLM agent platform development
  • API design & system integration experience
  • Must be product thinking
  • Must have experience with owning projects and be comfortable with self-direction

Benefits

  • wellness program offerings
  • company retreats

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