Customer-Facing Applied AI Engineer (London)

Addepar, Inc.; Greater London; On-site; GBP 100,000 - 180,000; Full time

Job summary

Addepar, a global data and AI platform, is hiring a Software Engineer - Customer Facing Applied AI in London, UK. You will work with Applied AI to understand client needs, prototype AI capabilities, and ship production-ready solutions.

Expect collaboration with engineering, data teams, and clients to deliver end-to-end AI-powered workflows. This role requires right to work in the UK from day one and does not offer visa sponsorship.

Qualifications

• Professional software engineering experience.
• Strong Python experience.
• Experience with LLM APIs (e.g., Claude, GPT) and function calling.
• Comfort with SQL for data exploration and data-grounded AI workflows.
• Experience with AI-assisted development tools (Claude Code, Codex, or similar).
• Ability to take projects from prototype to production and focus on client experience.

Responsibilities

• Build AI-powered agents and tools end-to-end for clients.
• Design and implement LLM integrations including prompt engineering and function calling.
• Define evaluation criteria and build test harnesses for AI systems.
• Work with clients to validate AI behavior and iterate toward production quality.
• Partner with core engineering to generalize client work into product features.
• Contribute to shared AI infrastructure and deployment pipelines.
• Monitor production AI systems for reliability, cost, and performance.

Skills

Python

LLM APIs

SQL

AI-assisted development tools

Prototype to production

Education

BS/MS in Computer Science or Math

Tools

Claude Code

Codex

GPT

Job description

Addepar, a global data and AI platform, is hiring a Software Engineer - Customer Facing Applied AI in London, UK. You will work with Applied AI to understand client needs, prototype AI capabilities, and ship production-ready solutions.

Expect collaboration with engineering, data teams, and clients to deliver end-to-end AI-powered workflows. This role requires right to work in the UK from day one and does not offer visa sponsorship.