Energy Trading - Principal Software Engineer London About Indicium AI Indicium AI is trusted by the world's leading enterprises to deliver AI into production at scale. We are a global AI-native consultancy with pro...Read More>>.

A leading consulting firm in Milton Keynes is seeking a Lead Principal Consultant for a contract role in Government, Defence & Security. The ideal candidate will have expertise in C# .NET Core or C++, along with experience in AWS, Docker, and securit...Read More>>.

Poutrix is seeking an experienced Principal Engineer to join our Enabling Infrastructure team based in Manchester. This role involves managing development led infrastructure projects across Mobility, Places, and Resilience, serving various market...Read More>>.

Role descriptionThe Enabling Infrastructure team is an established group of experienced engineers specialising in the delivery of development led infrastructure projects centred around our Birmingham, London, Bristol and Cardiff office...Read More>>.

Nexus Mods in Exeter seeks a Principal Software Engineer to lead the App Engineering team behind Vortex, our flagship desktop mod manager used by millions. You’ll write production code, shape architecture, and mentor others while solving deep sy...Read More>>.

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets.We are more than 34,000 people, in over 30 countries, dedicated to improving quality of life. Every...Read More>>.

Cure Talent are delighted to be partnered with an emerging wearable medical technology company at a defining stage of its growth. We are seeking a Principal Software Engineer to provide technical leadership across the software function, working cl...Read More>>.

Around the world, SYSTRA’s specialists plan, design, integrate, test, commission, project manage and deliver mass transit and mobility solutions that are relied on by more than 50 million people every day.For more than 60 years, the Gr...Read More>>.

CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and g...Read More>>.

Around the world, SYSTRA's specialists plan, design, integrate, test, commission, project manage and deliver mass transit and mobility solutions that are relied on by more than 50 million people every day. For more than 60 years, the Gro...Read More>>.

Effective Recruitment Solutions Ltd is seeking an experienced Highways and Transportation Principal Engineer to deliver a varied portfolio of projects in the UK. The role focuses on technical delivery, project management, and developing junior eng...Read More>>.

Are you passionate about leading technical excellence while remaining hands‑on in building high-quality software? Do you enjoy influencing teams, shaping engineering practices, and delivering reliable, secure, and observable solutions in a co...Read More>>.

easyJet Airline Company PLC is seeking a Principal Software Engineer to lead the eCommerce Platform Delivery team. You will drive the technical vision, architecture, and delivery of high‑performance, secure systems across multiple squads....Read More>>.

Raytheon UK is hiring a Principal Software Engineer in London. You will join a cross‑functional team delivering critical software for national security, using React/NextJS, TypeScript, Python, and Java across cloud environments.Role requi...Read More>>.

McNally Recruitment Ltd is seeking a Principal Engineer to join a large UK client in Edinburgh or London, with 6 days in the office per month and the rest remote. You will design and engineer software with customer experience at the forefront, con...Read More>>.

Principal Software Engineer C++ (Cloud Video Framework)Principal Software Engineer C++ (Cloud Video Framework)Contract: Full-Time, PermanentWorking Location: Hybrid, 2 Days a week in the office, minimum...Read More>>.

Albany Growth is partnering with a software business undergoing a major technology transformation. We are hiring a Principal Software Engineer to stay hands-on while shaping how to rebuild a large legacy product estate for a cloud-native future....Read More>>.

Simple Machines is a leading boutique technology firm seeking a Principal Software Engineer to design and deliver complex, scalable systems across backend, APIs, frontend, data pipelines, and cloud infrastructure. You’ll work with internal teams...Read More>>.

London About Us The Financial Times is one of the world’s leading news organisations, globally recognised for its authority, integrity and accuracy, with a mission to deliver quality information and services worldwide. At...Read More>>.

End Date Wednesday 21 October 2026 Salary Range £84,624 - £126,936 We support flexible working - click here for more information on flexible working options Flexible Working Options Hybrid Working, Job ShareJob Description Summary...Read More>>.

Select how often (in days) to receive an alert: Amey are a leading provider of full life-cycle engineering, operations and decarbonisation solutions, for transport infrastructure and complex facilities. Working for us, you’ll be de...Read More>>.

As a Principal Engineer, you'll be working within the Kier Design team, supporting them in delivering engineering excellence across a broad range of construction projects. This is an opportunity to lead the delivery of complex construction enginee...Read More>>.

Job Overview:Arm's Central Engineering DFT Architecture and Methodology team defines the future of Design-for-Test across Arm's CPUs, GPUs, System IP, AI accelerators and next-generation SoCs. The team develops DFT architectures, metho...Read More>>.

Hours35 hour per weekClosing DateFri, 9 Oct 2026Principal Engineer – Dynamics, Power Platform, Workflow & Colleague Experience Engineering at ScaleThe Cus...Read More>>.

Our vision is to give everyone the belief they can make their move. We aim to make moving simpler, by giving everyone the best place to turn to and return to for access to the tools, expertise, trust, and belief to make it happen. We’r...Read More>>.

Energy Jobline ZR in London is seeking a hands-on Principal Engineer to build new digital fintech products from the ground up. You will lead an engineering squad, shape architecture, and make key technical decisions while mentoring engineers and s...Read More>>.

Principal Engineer - Cybersecurity Science & AnalyticsLocation: London, GB, E14 5HQBrand: HSBCArea of Interest:Role Workstyle: Office WorkerDate: 13 Oct 2026Engineer and defend the digital backbone of on...Read More>>.

About The Role Amentum is seeking a Senior / Principal Ports and Maritime Engineer to join our UK team, supporting the delivery of critical infrastructure within the Defence sector. This role offers a flexible hybrid working model, combin...Read More>>.

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 34,000 people, in over 30 countries, dedicated to improving quality of life. Everyone ha...Read More>>.

Advance TRS is partnering with a growing engineering consultancy to recruit an experienced Structural Principal Engineer to lead the Structural discipline on major infrastructure projects in the UK.The role offers a Chartered structural eng...Read More>>.

Your Impact Are you a software engineer with a working knowledge of Artificial Intelligence (AI) and Machine Learning (ML)? Are you interested in developing software for some of the most cutting-edge defence and aerospace projects in t...Read More>>.

easyJet is seeking a Principal Software Engineer to lead the eCommerce Platform Delivery team. You will guide multiple squads, drive architectural choices, and ensure secure, scalable, high-performance systems.A strong focus on data integri...Read More>>.

Responsibilities:Write, maintain and own technical specifications required for civil works associated with substation, e.g. substation buildings, bunds, trenches, etc. and review existing specifications and update them based on lessons le...Read More>>.