Improbable - Principal Engineer

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London hybrid Until 8/22/2026 First posted March 25, 2025 Last posted March 25, 2025
Job description
In defence, we’re transforming how those who keep us safe prepare for the threats of the future. Join us and you’ll help build the most innovative virtual worlds available, so our defenders can plan, train and make life-saving decisions in the real one.

The Product Development group is hiring a Principal Software Engineer. This group is responsible for building our core technology proposition: a suite of components and tooling that supports the creation of complex, large-scale simulations in the Government and Defence space. The remit of the group is growing constantly and as part of that growth we are looking for an experienced principal engineer to help us lead this effort.

Your mission is to support our engineers through technical leadership and direction, continuous guidance and mentorship.

This role is all about experience. We have a lot of high potential engineers who are keen to learn. What we need more of are teachers. Here are some of the things we will be looking for (and it’s ok if you can’t tick all the boxes!)


Your Opportunity

  • Shape the technical vision: work with our technical leadership team to shape the technical vision and architecture of the product, making sure they align to the product vision and the overall business goals.
  • Communication: be comfortable communicating with technical and non technical stakeholders (including senior leadership) using multiple mediums such as giving tech talks, writing documents and presenting ideas in meetings - be able to make business goals “real” for engineers as well as demystify technology considerations for our commercial colleagues.
  • Technical Guidance: we expect you to work with teams and individuals during the full development lifecycle to make sure they deliver valuable software for the business. This can be achieved in multiple ways: mentoring, code review, pair-programming, design sessions etc.
  • We have a lot of high potential engineers who are keen to learn. What we need more of are teachers.
About this role

Summary

Lead technical vision and mentor engineers in software development.

Job title

Principal Engineer

Experience level

5+ years

Industry

software

Location requirements

Located in London; remote work not allowed

Salary

Not specified

Management role

Yes

Skills & keywords

Required skills

communicationtechnical guidance

Preferred skills

None specified

Specializations

technical leadershipmentorshipsoftware developmentsimulationgovernment
Locations

Structured locations inferred from the posting.

London, UK

On-site City
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