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We’re looking for a senior Front End Software Engineer who can be the technical go-to person in their area, offering guidance, mentorship, and hands-on expertise. Our software is used by more than 8,000 retailers across the UK and we partner with major vehicle manufacturers across the UK and Europ

What You’ll Do as a Principal Software Engineer:. Requirement for a Principal Software Engineer:. Principal Software Engineer in Buckinghamshire,.

Principal Software Engineer Edinburgh An innovative and well-established med tech company are seeking a proven technical leader to join its R&D team basedin central Edinburgh as a Principal Software Engineer.

Principal Electronics & Software Product EngineerLocation: Cambridge, CambridgeshireAn exciting opportunity has arisen for a Principal Electronics & Software Product Engineer to join a specialist product design consultancy focused on developing innovative technologies for multinational clients acros

Principal Software EngineerSalary: Negotiableplus benefits, pension (7% contribution), 25 days holiday & life insuranceWe are looking for principal software engineers with diverse experience.

Principal Embedded Software EngineerWinfrith, Dorset (hybrid working, 3 days per week onsite) – Permanent vacancyWe are looking for a Principal Embedded Software Engineer to work for our maritime defence client TKMS Atlas across a range of new projects, such as underwater vehicle control systems a

Principal Software EngineerPortsmouth | Hybrid, 3 days onsite£75,000-£85,000 plus bonus and benefitsThis Principal Software Engineer role is designed for a hands-on technical leader with strong C++ and Unreal Engine expertise, working at the forefront of complex, performance-critical software deli

Principal Software Engineer IoT & Full-StackLocation: Hybrid / BicesterType: PermanentSalary: Competitive, market-basedTUAL Technology is an innovative, VC-backed start-up based in Bicester, developing PowerUp a high-power EV charging solution designed for grid-constrained sites.

Principal Software Engineer – AI & InnovationRecruiting a Principal Software Engineer with a proven track record of delivering innovative, AI driven solutions and the curiosity to explore beyond traditional technology boundaries.

Pektron Group Ltd is searching for aSenior/ Principal Embedded Software Engineerwho will be responsible for writing software for a range of bespoke products. Our Engineering attitude is confident and can do and with solid research and a lot of intuition wenearly alwayssucceedNearl

We are seeking a Principal Software Engineer to join our friendly, relaxed and inclusive team. We are looking for a Principal Engineer who can manage technical entropy and ensure our codebases remain agile as we scale. You will uphold and establish engineering standards across the organization, ensu

About the Role:**As a Principal Engineer, you will help teams do their best work by improving engineering practices, reducing delivery risk, and fostering a culture of trust, learning, and high standards. Works with Architects and other Principals to drive technical direction while partnering effect

Join the Software Engineering team where you will play a crucial role in developing, enhancing, and transforming our investment reporting platform, Serpentine, a web application written using Python and Django. Architect and implement new software solutions, leading the overall structural design and

As a Principal Engineer, you will help teams do their best work by improving engineering practices, reducing delivery risk, and fostering a culture of trust, learning, and high standards. Work with Architects and other Principals to drive technical direction while partnering effectively with Enginee

A progressive healthcare technology provider in Greater London seeks a Principal Software Engineer to enhance its technology team. The successful candidate will provide technical leadership, design software architectures, and aid in the migration towards agile methodologies.

Principal Systems Engineer (Software/Simulation) Portsmouth – Broad Oak. Apply the principles of Systems Engineering to develop software‑based Simulation Systems across the full engineering lifecycle. Expertise in Systems Engineering and Software integration lifecycle principles (ISO 15288 and 1

This will be the first ever Principal Engineer level hire in Belfast, so there's an opportunity to make a lasting impact as we continue to grow the engineering team locally. The pinnacle of technical leadership, Principal Engineers at Olo shape the organisation’s technical vision, mentor engineers

At Nscale, our Software engineers form the backbone of our product offering. You’ll mentor a team of senior engineers, set technical direction, and drive engineering excellence while remaining hands‑on with critical systems. You have 10+ years software engineering experience building and operati

Principal Software Engineer - Python - Fully Remote (UK). Software Engineering Experience with proficiency in Python. Looking for a world class Python Engineer, with experience with TypeScript and ideally DevOps to play a crucial role.

A leading software development firm in London is seeking a Principal Software Engineer to lead the architectural evolution of their platform. The ideal candidate has over 12 years of software engineering experience, deep expertise in distributed systems, and exceptional leadership skills.

As a Principal Software Engineer within the eCommerce Platform Delivery team, you will provide leadership and technical stewardship across multiple squads within the Customer Service Mission. Working closely with Product Managers, Agile Delivery Managers, Enterprise Architects, and the Chapter Lead

Playing a key role in software engineering activities for the development and deployment of new products. Working at the heart of a high-impact program, you will collaborate closely with dedicated engineering teams to configure and deploy these advanced solutions, ensuring they are robust, scalable,

Sony Music’s Product, Design, Engineering & Global Operations (PDEGO) team is seeking a Lead Software Engineer within our Pub Admin product team in our London King’s Cross office. Seeking 20+ years of software engineering experience in the following areas:. Pub Admin is our unified, modern right

La Fosse has partnered with a leading tech client who is looking for a Principal Software Engineer with extensive experience in React, TypeScript, and Kotlin. Principle Software Engineer - £625-£650 outside IR35 - London (Hybrid 3 days in the office required).

We're looking for a Principal Software Engineer to join our growing and passionate Technology Team. We are looking for an experienced Software Engineer to help us migrate our code and culture towards a truly agile environment, with a focus on scalability and feature enablement. Computer Science or S

A leading technology company is seeking a Principal Software Engineer in London to collaborate with AI researchers and bring innovative health solutions to market. The ideal candidate will have a background in software engineering, knowledge of distributed systems, and a passion for user experience.

Principal Embedded SW Engineer – Medical Devices. We are seeking a hands‑on Embedded Software Engineer to design, develop, and validate firmware for next‑generation medical devices. ADI combines analog, digital, and software technologies into solutions that help drive advancements in digitized

Principal Engineer - Full-Stack (Java & React). Strong background as a senior/principal full‑stack engineer (backend + frontend). Experience leading engineering teams, coaching developers and influencing technical direction.

As part of the M&S Software Engineering team, you'll be joining a well-loved historic brand, working on solutions that serves millions of loyal customers and thousands of colleagues! With ethical values that run right through the company's core and technology leaders that truly understand software e

A leading UK deep-tech design consultancy is seeking a Principal Embedded Software Engineer for a hybrid role in South Oxfordshire.

A leading engineering platform provider in the United Kingdom is seeking a Principal Software Engineer to lead the architectural evolution of their platform. Candidates should possess significant software engineering experience, expertise in Python and distributed systems, as well as strong leadersh

Principal Software Engineer – Data & Distributed Systems - PerfectScale by DoiT. Our Principal Data Engineer will be an integral part of our Engineering teams in EMEA. DoiT offers PerfectScale, a pioneering Kubernetes optimization and management solution that empowers DevOps, SRE, and Platform Eng

We are looking for a Principal Software Engineer (we call them Principal Software Craftspeople) who shares the same values of pragmatism, professionalism and transparency as us to join our team. You bring deep hands-on experience in software engineering, particularly modernisation, with a track reco

The ideal candidate has extensive experience in software engineering, leadership skills, and a strong grasp of Agile methodologies, enabling effective collaboration across teams. A global information solutions provider is seeking a Technical Lead to oversee software design and implementation for com

Principal Software Engineer based in London. This London‑based Principal Software Engineer role sits at the heart of Verifone’s global payment gateway platform. Principal‑level backend engineering experience building and operating large‑scale, high‑performance systems.

Produce high-integrity, mission-critical software to defined engineering and quality standards. Contract Software Engineer (Ada) Real-Time Embedded. This is a hands-on role developing, integrating, and testing high-integrity software that directly supports operational capability.

Around 7+ years of experience in Software Engineering, Quality Engineering, or related roles, contributing to complex systems in production. Consulting/Principal Software Engineer. Partners closely with Product, Architecture, QE, SRE/Platform, and adjacent squads to deliver reliable, secure, and obs

At least 10 years of commercial software engineering experience, with a proven track record of leading the design and delivery of large‑scale, complex, and ambiguous technical projects. Snyk is the leader in secure AI software development, helping millions of developers develop fast and stay secur

Principal Software Engineer, Snyk Code (SAST). Join to apply for the Principal Software Engineer, Snyk Code (SAST) role at Snyk. As a Principal Software Engineer on the Snyk Code team, you will be responsible for driving our technical future and tackling our most difficult and strategic challenges i

Principal Software Engineer Rust Low Latency. Principal Software Engineer / Developer (Rust Golang) London / WFH to £110k. As a Principal Software Engineer you will split your time between architecture, design, hands‑on coding and mentoring, team leadership and strategy.

Principal Software Engineer (Docker Agents). You’ll define the technical vision, lead architecture decisions, and partner with engineers and leaders across Docker to bring containerized agent capabilities into Docker’s developer experience. Mentorship & Enablement: Mentor senior engineers, raise

A healthcare AI startup is seeking a Software Engineer to develop and deploy AI systems focused on patient communication and triage.

A leading fintech scale-up in the UK is seeking a Principal Software Engineer to drive the development of a new credit card product.

Supporting delivery, performance, and professional development across the engineering function. The opportunity to shape engineering culture and technical direction at scale. We’re working with a Hull-based technology company that’s scaling its engineering capability and is now looking for an ex

Web / Front End & Mobile software engineering and at least 4+ years in a Principal Engineering or Solution Architect role or similar. Set technical direction: Define & maintain Front-End/Web and mobile software architecture and patterns, engineering standards and the ‘right way’ to build greenfi

Our Principal Data Engineer will be an integral part of our Engineering teams in EMEA. Collaborate with product and engineering teams and R&D management to define the technical roadmap, review architecture and mentor junior engineers. Experience with modern data engineering technologies: Spark, Trin

As the Principal Engineer, Software Supply Chain Security, you’ll own the technical strategy that secures how software is built and delivered on GitLab’s DevSecOps platform. Experience operating as a Principal or Staff Engineer across multiple development teams, providing architectural leadershi