Principal Software Engineer, GPS

London, UKFull-time2026-11-05 → 2026-11-10

Core

Building custom AI applications, generating training data for national LLMs, and providing advisory services to the global public sector.

Role type

Principal Software Engineer (AI/ML)

Builds

Custom AI applications, proofs of concept, working prototypes, and reusable platform capabilities for government clients.

Domain

Public Sector / Government / AI & Machine Learning

Deliverable

production ML models

Required skills

System design and architecture, Cloud-based ML tools (AWS, GCP, Azure), Python, TypeScript/JavaScript, Java, C++, AI/ML in production (Generative/Agentic AI, RAG), Mentoring, Client-facing technical leadership

Preferred skills

Forward deployed engineering, Startup founding experience, Large-scale AI deployment, On-prem/customer-controlled environment deployment, UK government security clearance

Technologies

Python, TypeScript, JavaScript, Java, C++, AWS, GCP, Azure

Responsibilities

Solve hardest technical problems and unblock stuck projects, Lead technical scoping and PoC definition with clients, Build and ship prototypes to production, Define cohesive and secure technology architecture, Mentor engineers and raise engineering standards, Partner with executives on high-stakes trade-offs, Turn field patterns into reusable platform components, Lead agentic engineering initiatives

Seniority

Principal, hands-on IC with mentorship

About scaleai

At Scale, our mission is to develop reliable AI systems for the world's most important decisions. Our products provide the high-quality data and full-stack technologies that power the world's leading models, and help enterprises and governments build, deploy, and oversee AI applications that deliver real impact. We work closely with industry leaders like Meta, Ernst & Young, Mayo Clinic, Time Inc., the Government of Qatar, and U.S. government agencies including the Army and Air Force. We are expanding our team to accelerate the development of AI applications.