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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. Provide leadership and mentorship across multiple engineering teams.

Principal Software Developer – Manchester (central) 3 days a week in office with flexible start/finish – strong benefits – up to £90,000 (flexible for the right person). I’m working with a high‑growth tech business looking for a Principal Software Developer to take a leading, hands‑on r

Principal Software Engineer / Tech Lead / Founding Engineer opportunity - Tech Start-Up- Remote UK wide - Up to 120k. Morson Edge are delighted to have teamed up with a Tech4Good start up on their search for their first Software Engineering hire. The client are completely open on what the title of t

Principal Front End Software Engineer with a passion for code, architecture, best practise, and a huge believer in driving what quality engineering looks like required by health tech success story. Working remotely (within UK only) with in person engineering get togethers quarterly (London), we are

You'd report to the Head of Engineering and would work as part of a team of Principal Software Engineers responsible for collaborating with Architects and Product Owners to lead the re-architecture of existing platforms to a cloud-native, event-driven, microservices architecture. Great opportunity f

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

You'd report to the Head of Engineering and would work as part of a team of Principal Software Engineers responsible for collaborating with Architects and Product Owners to lead the re-architecture of existing platforms to a cloud-native, event-driven, microservices architecture. Opportunity for a P

Collaborate with engineers, product managers, and stakeholders to deliver reliable, scalable features. Degree in Computer Science, Engineering, or equivalent experience. Interest in financial services or experience in B2B software is advantageous.

Principal Software Engineer – Manchester – eCommerce - 90k+10% Bonus. Great opportunity for a Principal Software Engineer to join a Manchester based eCommerce giant as they work on a large-scale digital re-platform across the estate to MACH and Event-Driven Architecture.

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 – Manchester – eCommerce - 90k+10% Bonus Great opportunity for a Principal Software Engineer to join a Manchester based eCommerce giant as they work on a large-scale digital re-platform across the estate to MACH and Event-Driven Architecture.

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 softwa

Principal Software Engineer – Manchester – eCommerce - 90k+10% Bonus. Great opportunity for a Principal Software Engineer to join a Manchester based eCommerce giant as they work on a large-scale digital re-platform across the estate to MACH and Event-Driven Architecture.

You’d report to the Head of Engineering and would work as part of a team of Principal Software Engineers responsible for collaborating with Architects and Product Owners to lead the re-architecture of existing platforms to a cloud-native, event-driven, microservices architecture. Principal Softwar

Job Description Principal Software Engineer – Manchester – eCommerce - 90k+10% Bonus Great opportunity for a Principal Software Engineer to join a Manchester based eCommerce giant as they work on a large-scale digital re-platform across the estate to MACH and Event-Driven Architecture.

A leading consultancy firm is seeking a Technical Lead - Principal Software Engineer to join their team in London or Cambridge. Ideal candidates will have over 8 years of experience in software engineering, a relevant degree, and strong leadership skills.

Oliver Wyman is seeking a Principal Software Engineer (Cloud) to join our Retail Solutions team in the UK, with London or Newcastle being our preferred office locations but we can offer some flexibility. This is a hands‑on role that requires a strong SW engineering and cloud engineering foundation

A global healthcare leader in London is seeking a skilled software engineer to join our R&D Technology team. The ideal candidate will have significant experience in Python programming, cloud-native application architecture, and data engineering.

Senior Principal Software Engineer. Software Engineering & Application Development. You will interact with architects, software and data engineers, AI/ML modelers, product owners as well as other team members across R&D.

Our Principal Software Engineers are members of the Software Engineering Practice leadership team with the responsibility to develop the capability of the practice to meet business needs and to accelerate the growth of the practice, their account and the wider business. Our Principal Software Engine

An innovative tech consultancy in the UK seeks a Principal Software Engineer to lead high-profile projects and influence technology strategy. You will manage a small group of engineers, mentor cross-functional teams, and advocate for modern engineering practices. Ideal candidates will have extensive

Principal Systems Engineer, R2 Storage. Senior/Principal Systems Engineer (4 positions). Software Engineering Manager - Systems Generalist.

A leading biopharmaceutical firm in London seeks a Senior Principal Software Engineer to design cloud-native applications and maintain data pipelines. The ideal candidate will have a Bachelor's degree in Computer Science, extensive experience with full-stack development, and strong skills in Python,

Proven experience mentoring engineers, influencing large‑scale technical decisions, and driving cross‑team initiatives. 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

This role involves leading design efforts for scalable systems and mentoring engineering teams.

Collaborate with the architecture function to represent engineering needs and help translate architectural direction into practical implementation patterns. Bring a product mindset to platform engineering, ensuring solutions are aligned with customer and business goals. Act as a mentor to engineers

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).

A global information analytics company is seeking a Principal Software Engineer to enhance its API Platforms, focusing on design, development, and mentor junior team members.

They are now looking to appoint a Principal Engineer to play a pivotal role in shaping the future of their platform and engineering culture. This is a senior technical leadership role for someone who enjoys operating at system-wide level, influencing architecture, engineering standards, and long-ter

A leading tech solutions provider in Greater London seeks a Principal Engineer to guide projects that leverage AI/ML, deliver high-quality software, and build strong client relationships.

Senior Systems & Regulatory Software Engineer. Systems / Regulatory Software Engineer. Safety-critical, regulated medical software.

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

A transformative Medical Device company in the UK is seeking a Principal Software Engineer. The ideal candidate has hands-on software testing experience and a relevant degree. You will lead software testing and quality assurance activities, create effective testing strategies, and manage cybersecuri

A leading retail company in the UK is looking for a Principal Software Engineer to support their digital transformation.

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

A leading cloud consultancy in the UK is looking for a Principal Software Engineer to lead the design and delivery of modern scalable software systems. You will mentor engineers and act as a senior technical advisor, guiding customers through complex architectural decisions.

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

Principal Software Engineer – Manchester – eCommerce - 90k+10% Bonus. Great opportunity for a Principal Software Engineer to join a Manchester based eCommerce giant as they work on a large-scale digital re-platform across the estate to MACH and Event-Driven Architecture.

Hexwired Recruitment has partnered with a world renowned Electronics manufacturer based in Southampton who are now seeking a Principal Embedded Software Engineer to help develop and maintain a brand new system the company is developing. The company are now seeking a Principal Embedded Software Engin

Elasticsearch - Principal Software Engineer I (Distributed Systems). Principal Software Engineer I - Distributed Systems. We are looking for a senior engineer to join our Elasticsearch - Distributed Systems team and focus on scale, performance, and resilience.

You’d report to the Head of Engineering and would work as part of a team of Principal Software Engineers responsible for collaborating with Architects and Product Owners to lead the re-architecture of existing platforms to a cloud-native, event-driven, microservices architecture. Principal Softwar

A leading technology consulting firm in London is seeking a Principal Software Engineer to drive technical direction and client engagement. This role requires extensive experience in software development, particularly with AI and ML technologies.

A leading global financial services firm seeks an experienced Principal Software Engineer specializing in Java development for algorithmic trading.

We are looking for a Principal Software Engineer to shape the technical direction of high‑profile projects and lead the delivery of modern, scalable software. Extensive experience in software engineering, with a focus on large‑scale, complex systems. Knowledge of AI, machine learning, or other e

Staff-Level Full-Stack Software Engineer; Principal Software Engineer, Nifty Gateway; Software Engineer, Nifty Gateway (Fullstack). Principal Software Engineer - Manchester.

You will work with like-minded people from business, product and engineering functions to develop and refine client journeys covering onboarding, KYC, account management and investment workflows in a secure and compliant environment. Building and deploying scalable, secure, and compliant software at

We are looking for a Principal Software Engineer who will play a defining role in shaping our platform, our teams, and our technical future. Drive a healthy engineering function, ensuring pace is balanced with the needs of engineers, towards a sustainable model. Prior CTO (at a startup), Principal E

A leading tech firm based in London seeks a Principal Software Engineer to drive the development of scalable applications.