Principal Software Engineer jobs in Berkshire

Principal Software Engineer Fully Remote | Permanent | £85,000 - £115,000 Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a Principal Software Engineer to join their senior engineering leadership team. This is a rare opportunity to combine hands-on development with strategic influence, guiding architecture decisions and shaping the...

Principal Software Engineer .NET £90,000-£110,000 Remote (UK) Do you thrive on building scalable solutions that power commerce worldwide? We're partnering with a rapidly expanding global payment platform fresh off a transformative acquisition. They're engineering a robust, merchant-centric ecosystem built on quality, resilience, and scale - and they need exceptional .NET Software Engineers to...

Role: Senior, Staff & Principal Engineers Salary range: 90 - 160k (+ equity) Senior: 90-115k | Staff: 120-135k | Principal: 140-160k Location: Central London (x3 days per week onsite - Tue/Wed/Thurs) Tech stack includes: Typescript, React, Material UI, NodeJS, Postgres, AWS (Serverless) Current team size: 35 Engineers We're working with a B2B SaaS startup company based in London, an AI...

I’m supporting an early-stage AI startup building genuinely transformational tooling for some of the most document-heavy industries out there. They’re now looking for a Staff or Principal Software Engineer who wants to design and ship AI-driven product capabilities end-to-end, from the first customer conversation all the way to production rollout and adoption. What you’ll be doing - Owning...

You will help them stay ahead of the curve by solving both technical and sociotechnical problems. You would be joining a squad of Principal engineers with different expertise that serves as a centre of excellence to the 16+ engineering teams in the wider engineering function.

Senior Backend Engineer | London | £100,000 - £160,000 | Python | FastAPI | Systems Location: London based - hybrid Salary: £100,000 - £160,000 + equity Tech Stack: - Backend: Python (FastAPI) - Cursor, Claude Code - AWS Are you a backend engineer who cares more about building robust systems than chasing AI hype? We are working with a recently funded Series A technology company building AI...

Principal Engineer (Education) Competitive + Bonus + Benefits UK, Remote Permanent full time Summary The Principal Software Engineer role is a key role in the IRIS Engineering Organization and is one of the keystones in the delivery of World-Class Customer Products, Developer experience and the advancement of our technology xujxxms in .NET and C#. As a Principal Software Engineer, your...

Job Description Principal EC&I Engineer Reading - Hybrid - 3 days a week in office £50-55 per hour Outside of IR35 Are you an EC&I Engineer who has at least 10+ years experience designing within an building services industry? If so, please read on... Essential Requirements: - 10-15+ years' experience working as a EC&I Engineer - 5+ years working within the Nuclear industry - Degree qualified...

You will be a vital part of this evolution, contributing your expertise to our strategy and helping us redefine what services we offer our clients.

You will ensure buildings are designed to minimise fire risks, through contributing to the development of fire strategy reports, calculations and fire risk assessments.

You will be in a client-facing role, attending project meetings and disseminating the brief to the project team. - Work with the team leader to help monitor fee expenditure, resources and work delivered. - Mentor and support our ‘next gen’ professionals, including apprentices and graduates.

You will work in close collaboration with a highly-functioning team of software, electronics, algorithm engineers and product managers.

Job Role: Lead Software Engineer, React Native Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our innovative application using React Native. Working with a modern JavaScript stack, your primary focus will be on coding, testing, and enhancing the functionality of...

Principal Mechanical Engineer, London. Excellent opportunity for an experienced Principal Mechanical Engineer to play a key part in the growth of an expanding M&E team within an International Engineering and Design Consultancy. Location: London Salary: £50,000 - 70,000 + Package benefits Job Description: The Resolute Group is working in partnership with an International Engineering and...

Job Title: Principal DevOps Engineer - AWS/Terraform/Kubernetes Type: Permanent Location: Fully remote (must be UK-based) Salary: £90-110K DOE Our client are growing their team and are looking for a Principal DevOps Engineer to contribute to the development and maintenance of our cloud infrastructure, help with the definition of best practices for infrastructure management and to support...

Please note, this company is not able to offer a sponsorship visa at this time. We are seeking an experienced Principal or Associate Mechanical Design Engineer to join this dynamic team in the field of Building Services Engineering. As a key member of the organisation, you will play a crucial role in designing and optimising mechanical systems for large-scale projects. The successful candidate...

Job Description Principal Systems Engineer – Defence. Requires SC Clearance to start and DV eligibility. Location - Berkshire 5 days per week. Salary – Competitive DoE. We’re supporting a leading organisation operating at the forefront of defence and secure systems engineering, looking to appoint an experienced Principal Systems Engineer to take a key leadership role across complex,...

Principal Software Engineer .NET £90,000-£110,000 Remote (UK) Do you thrive on building scalable solutions that power commerce worldwide? We're partnering with a rapidly expanding global payment platform fresh off a transformative acquisition. They're engineering a robust, merchant-centric ecosystem built on quality, resilience, and scale - and they need exceptional .NET Software Engineers to...

You will have a good technical knowledge in the primary discipline of fire safety design.

You will be IT literate with a working understanding of fire modelling software analysis tools.

You should have excellent communication skills and an interest in working in a team environment.

Principal Software Engineer Fully Remote | Permanent | £85,000 - £115,000 Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a Principal Software Engineer to join their senior engineering leadership team. This is a rare opportunity to combine hands-on development with strategic influence, guiding architecture decisions and shaping the...

You will be in a client-facing role, attending project meetings and disseminating the brief to the project team. - Work with the team leader to help monitor fee expenditure, resources and work delivered. - Mentor and support our ‘next gen’ professionals, including apprentices and graduates.