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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 Embedded Software Engineer. We 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 and sonar equipment. You will be hired as an experienced engineer to play a se

This 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 delivery. The role combines advanced engineering with genuine technical authority, shaping how simulation-

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

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 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 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.

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

Due to ongoing growth and strategic development initiatives, Our Client is seeking an experienced Principal Software Engineer to lead the development of sophisticated software applications and drivers for its range of specialised products. Job title: Principal Software Engineer. Maintain a strong un

As a hands‑on technical leader, you will set the engineering vision, drive technical excellence, and mentor teams to deliver exceptional web experiences that serve thousands of users. Act as a trusted advisor to engineering teams, providing hands‑on guidance in design, implementation, and code r

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.

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

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

As a Principal Software Engineer, you’ll report to the Head of Software Engineering and play a key role in shaping the technical direction of our Technology division. This role is an opportunity to shape long‑term technical direction, strengthen engineering capability, and raise the bar for qual

Get notified about new Principal Software Engineer jobs in London, England, United Kingdom. Join Monolith as a Principal Software Engineer. We’re seeking a hands‑on technical leader who will work closely with the VP Engineering to define and execute the platform’s evolution to a more distribut

Strong background as a senior/principal full‑stack engineer (backend + frontend). If you’re a Principal Engineer who wants to lead complex builds, influence technical strategy, and work on high‑impact projects, apply now!. Mentoring and uplifting engineering teams, driving best practice across

Principal Software Engineer- Search EngineerElsevier is a global leader in advanced information and decision support for science and healthcare. Requirements:* Proven experience as a Software Engineering Lead / Tech Lead / Principal working on search platforms or large-scale distributed systems.

A Fintech going through a huge transformation is looking for Principal Engineers to join the team and play a key role in shaping their future technology and engineering practices. As a Principal Engineer, you will apply your technical expertise and hands-on skills to tackle sophisticated engineering

Principal Software Engineer (Python / Rust / Go / C++). This is a hands‑on Principal Engineer role focused on complex distributed systems at scale, with an emphasis on performance and reliability. Partner closely with senior engineering leadership to influence critical technical decisions.

Principal Tech Recruiter (Software Engineering) at Wave Talent. Get notified about new Software Engineer jobs in. Software Engineer/Quant Developer (FULLY REMOTE) - Up to £200k + Bonus - London.

Principal Software Engineer – Would you like to be part of a brand-new engineering group focused on redefining how people move through next generation digital experiences? This is a rare opportunity to join an internal innovation incubator exploring AI, AR, mobile, web and emerging technologies, w

At least ten (10) years of experience as a software engineer, at least 2 at the Senior Staff/Principal level (L7+). You will focus on friction points around primarily backend issues for all teams in Engineering (90 Engineers). In the near future, standardising things across all of Engineering and br

Principal Software Engineer - Personalisation. Job Category Software Engineering. Mentor and support senior engineers, helping to raise the overall engineering capability.

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.

A global information analytics company in the United Kingdom is seeking a Principal Engineer to enhance engineering practices and support teams in delivering high-quality solutions.

A leading UK retailer is looking for a Principal Engineer to shape technical direction and deliver strategic goals in their Personalisation product group. This pivotal role involves leading engineering excellence and collaborating with cross-functional teams to enhance customer experiences through t

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.

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

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,

Member of Technical Staff - Principal Software Engineer. Build the hiring pipelines, onboarding frameworks, or software development best practices as needed to scale an engineering team around you. Bachelor’s or higher degree in Computer Science, or related technical discipline AND strong software

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.

A global financial services leader in the UK is seeking a Principal Software Engineer to enhance and deliver market-leading technology products.

You will have the opportunity to shape the direction of our projects while mentoring junior engineers and preparing for a future lead position. Strong background in software design patterns and architectural principles.

With more demand for their product than they can currently meet, we're looking for a Principal Engineer to grow their engineering team, with strong experience in:. Software Development and IT Services and IT Consulting.

At the Principal level, engineers are expected to master their immediate domain and have broad impact across other engineering teams. Influence leadership / CTO organization and collaborate with other Principal Engineers across the organization to build the right software architecture for Nifty Gate

Staff or Principal Engineer level in a sizeable engineering organization and can point to specific platform decisions — in production today — that they own. Staff or Principal Engineer level in an organization of 100+ engineers. Principal Software Engineer (Python, AI).

A leading cryptocurrency firm in Greater London is seeking a Principal Software Engineer. This position offers competitive compensation, a long-term equity grant, and considerable paid holidays, making it an excellent opportunity for seasoned engineers looking to impact and guide engineering practic

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

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

The Principal Software Engineer shapes and evolves our architecture using Distributed Domain Driven Design practices, ultimately ensuring the robustness and scalability of our systems. Knowledge of multiple software stacks. Skilled with designing and operating software in a Cloud Provider such as AW

A leading electronics manufacturer based in Southampton is seeking a Principal Embedded Software Engineer to spearhead development and maintenance of a new system. This role requires a candidate with a strong background in embedded software, particularly in processor design and communication interfa

Principal Software Engineer – Data & Distributed Systems - PerfectScale by DoiT. Our Principal Data Engineer will be an integral part of our Engineering teams in EMEA. Champion best engineering practices, code quality, testing and maintainability.

Principal Python Software Engineer. As a Principal Python Software Engineer, you'll join an Agile team united by curiosity, collaboration, and the belief that great technology can truly make a difference. This Principal Python Software Engineer role is paying circa £65k with benefits including, 15%

Principal Software Engineer (Data Platforms / APIs). This is a rare opportunity for a senior engineer who wants to. The engineering challenge is non-trivial:.