Principal Software Engineer, GPS

Scale AI · London, UK · GPS Engineering · listed November 5, 2026

The shape of it

Seniority
Principal
Experience asked
5–10 years
Where
Not stated
Requirements listed
7
Length
1,307 words

In the posting’s own words

We are hiring a Principal Engineer to join a small team of our most senior engineers who take on the problems no one else can. You will work at the earliest stage of our engagements: shaping the technical approach with clients, defining the technology we build on, and turning ideas into working prototypes fast. You will step in when a project is stuck or a problem is unusually hard, and turn what you learn in the field into shared capabilities every team can build on.

What it asks for · 7

  • A strong engineering background, with a Bachelor’s degree in Computer Science, Mathematics or a related quantitative field (or equivalent practical experience)
  • 10+ years of post-graduation engineering experience, with demonstrated proficiency in languages such as Python, TypeScript/JavaScript, Java, or C++
  • 5+ years of experience applying AI/ML in production environments, such as building generative/agentic AI applications, RAG systems or evaluation pipelines
  • Strong problem-solving skills, with a track record of taking ambiguous, early-stage problems from a blank page to a working prototype and into production
  • Deep expertise in system design and architecture, including experience with cloud-based machine learning tools and platforms (e.g. AWS, GCP, Azure)
  • Past experience in a forward deployed engineering role
  • Experience building and deploying large-scale AI solutions

Also a plus

  • Past experience in a forward deployed engineering role
  • Experience working at a startup, particularly as a founding engineer
  • Experience building and deploying large-scale AI solutions
  • Experience delivering technology programs for governments or regulated industries
  • Experience deploying solutions on-prem or in customer-controlled environments
  • Current or previous UK government security clearance (e.g. SC or DV)

Degree language

  • A strong engineering background, with a Bachelor’s degree in Computer Science, Mathematics or a related quantitative field (or equivalent practical experience)

Tools and skills named

Languages
  • C++
  • Java
  • JavaScript
  • Python
  • TypeScript
Ways of working
  • Mentorship2×
  • Code review
  • Cross-functional
Cloud & infra
  • AWS
  • Azure
  • GCP
Models & research
  • Machine learning2×
  • LLM
Security & compliance
  • Security

Words the posting leans on

  • experience10×
  • engineering7×
  • clients6×
  • engineer6×
  • technical6×
  • build5×
  • problems5×
  • public sector5×
  • building4×
  • engagements4×
  • solutions4×
  • systems4×
  • technology4×
  • bar3×
  • core3×
  • design3×

Counted from the posting after the mission statement and the legal notices are set aside. The ones near the top are the ones a screener is looking for.

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How this page was made

An automated read of a public job posting, fetched November 5, 2026 and last changed by Scale AI on November 5, 2026. Every list above is pulled from the posting’s own sentences — nothing rewritten, nothing added, no judgment about the role or the company. Counts and seniority are read off the text by rule, so they can be wrong where the posting is unusual. The original is the only thing that binds. Openings close without warning; check the source before spending an evening on it.