1 to 25 of 79 Principal Software Engineer Jobs in London

PRINCIPAL SOFTWARE ENGINEER - eDV CLEARED NEW PERMANENT OPPORTUNITY AVAILABLE IN LONDON FOR AN eDV CLEARED PRINCIPAL SOFTWARE ENGINEER Salary: Up to £120,000 + Clearance Bonus Location: London Clearance: Active eDV clearance required for high-side IT access Type: Permanent To apply, email … currently working with a leading technology organisation operating across National Security and Defence, who are looking for an experienced Principal Software Engineer to join their growing engineering function. This is a senior technical leadership position where you'll be working on complex, mission-critical systems, taking ownership ...

seeking an exceptional Principal Software Engineer – AI Native to lead the design, development, and delivery of business-critical software platforms across Aventum Group. This is a hands-on leadership role for a highly experienced software engineer who combines deep technical expertise with … first mindset. You will be responsible for architecting scalable solutions, driving engineering excellence, and leveraging AI-native development practices to accelerate software delivery and innovation across the business. As a Principal Engineer, you will act as a technical authority across multiple initiatives, influencing architecture, engineering standards ...

Principal Software Engineer/Developer (Java Spring Boot AWS) London/WFH to 120kAre you an experienced Java focussed Software Engineer, with technical project leadership and client facing skills You could be progressing your career at a global technology consultancy.As a Principal Software Engineer you will lead client projects, often long term technical transformations, designing, developing and delivering a range of projects for clients, mainly within the financial services sector and with a focus on migrating legacy systems to AWS and introducing CI/CD pipelines and cloud deployments.You'll join ...

Principal Software Engineer/Developer (Java Spring Boot AWS) London/WFH to £120k Are you an experienced Java focussed Software Engineer, with technical project leadership and client facing skills? You could be progressing your career at a global technology consultancy. As a Principal Software Engineer you will lead client projects, often long term technical transformations, designing, developing and delivering a range of projects for clients, mainly within the financial services sector and with a focus on migrating legacy systems to AWS and introducing CI/CD pipelines and cloud deployments. ...

Principal Software Engineer/Developer (C# .Net AWS Python) London/WFH to 120kWould you like to join a growing and profitable scale-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression … Principal Software Engineer you will architect and build highly performant and scalable solutions using the Microsoft tech stack and SOLID design principles, collaborating with cross functional Agile project teams in 2 week Sprints, you'll be an advocate of best practice and ensure software is delivered ...

Principal Software Engineer/Principal AI EngineerAre you excited about building intelligent systems powered by innovative AI technologies Do you enjoy creating solutions that turn complex data into impactful outcomes About the team: Embedded Innovation Teams are cross-functional squads embedded within our segments to rapidly … directly inside segment and function teams, improving the internal workflows that help our people deliver better outcomes for customers, faster.About the role: As a Principal AI Engineer/Principal Software Engineer, you will be the technical lead for an embedded Innovation Squad, owning technical execution ...

# Principal Software Engineer - Search Scaling - Elasticsearchat Elastic • London, United KingdomBack to jobs6d agoE## Principal Software Engineer - Search Scaling - ElasticsearchElastic00EngineeringFull-timeLondon, United Kingdom✓ Visa RelocationApply Job### Job DescriptionElastic, the Search AI Company, enables everyone to find the answers they need in real time, using … cloud-based solutions for search, security, and observability help organizations deliver on the promise of AI.What is The Role: We're looking for a Principal Software Engineer to join the Elasticsearch - Search Scaling team. This globally-distributed team of experienced engineers focuses on delivering a robust ...

purpose 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 engineers and engineering, it’s an exciting time as we’re redefining ourselves into a digital first and engineering-led organisation, with the quality of our engineering team being a key differentiator. We are seeking a passionate Principal Software Engineer to join our Food & International ...

Role Summary We are seeking an exceptional Principal Software Engineer – AI Native to lead the design, development, and delivery of business‐critical software platforms across Aventum Group. This is a hands‐on leadership role for a highly experienced software engineer who combines deep technical … with an AI‐first mindset. You will be responsible for architecting scalable solutions, driving engineering excellence, and leveraging AI‐native development practices to accelerate software delivery and innovation across the business. As a Principal Engineer, you will act as a technical authority across multiple initiatives, influencing architecture ...

Principal Software Engineer/Principal AI Engineer Embedded Innovation Teams are cross‐functional squads embedded within our segments to rapidly turn internal AI experimentation into validated, reusable solutions, building the capabilities we need to deliver customer value and growth. We work problem‐first rather than … inside segment and function teams, improving the internal workflows that help our people deliver better outcomes for customers, faster. About the role As a Principal AI Engineer, you will be the technical lead for an embedded Innovation Squad, owning technical execution from discovery through to production. You will ...

Principal Software Engineer/Principal AI Engineer Are you excited about building intelligent systems powered by innovative AI technologies? Do you enjoy designing models that turn complex data into impactful solutions? About the team: Embedded Innovation Teams are cross-functional squads embedded within our segments … inside segment and function teams, improving the internal workflows that help our people deliver better outcomes for customers, faster. About the role: As a Principal AI Engineer, you will be the technical lead for an embedded Innovation Squad, owning technical execution from discovery through to production. You will ...

Principal Software Engineer - Simple Machines Hybrid · Full-time · London, UK About Simple Machines Simple Machines is a leading independent boutique technology firm with a global footprint across London, Poland, Sydney and New Zealand. We operate at the intersection of data, AI, machine learning, data engineering, and software … help them better understand their organisations, customers, and citizens. Our teams design and build large-scale data platforms, intelligent systems, and high-impact software products. We engineer data to lifeTM. The Role As a Principal Software Engineer , you’ll play a key role in delivering ...

exciting opportunity has arisen for a Principal Electronics & Embedded Software Engineer to join a team developing innovative medical and technology products, taking ideas from concept through to manufacture for some of the world's leading companies. The business has expanded its global capability while maintaining a reputation … role sits within a rapidly growing technical team developing complex electromechanical products from concept through to manufacture. This position is ideal for an experienced Principal Electronics & Embedded Software Engineer looking to step into a principal-level role, lead multidisciplinary teams, and take ownership of full product ...

experienced Principal Software Engineer looking to work on cutting-edge technology and make a meaningful impact on users' daily lives in the medical field? If so, we invite you to apply below.As the Principal Software Engineer, you'll bring a wealth of cloud-native … technical development and delivery of products in line with our product vision and Quality Management System. Additionally, you'll shape the technology roadmap, enhance software delivery capabilities, and influence the company's overall technology strategy.To excel in this position, you should have a proven track record of successfully taking ...

Role description Principal Software Engineer – Data Technology Platforms Location London Start : ASAP End : As of now till Dec 2026 with possible extesnions Seeking an experienced and data-focused Principal Software Engineer to join our Data Technology Platforms team. This team is responsible for building … scalability. Solution Delivery Analyze business and technical requirements and evaluate solution viability. Design, develop, test, and deploy enterprise-grade data solutions. Support the full Software Development Lifecycle (SDLC), from requirements through production support. Ensure solutions are maintainable, supportable, and aligned with enterprise standards. Optimize performance for large-scale data ...

impact we have within the community.Salary: 80,200 - 120,400The OpportunityThis is more than just a job; it’s a mission.As a Principal Software Engineer, you will play a pivotal role in designing, developing, and maintaining the critical infrastructure that powers our services. You will work … meet customer needs.“My purpose is to lead a team of engineers, rise to the challenges presented, push the boundaries and define possible together.”– Principal Software Manager, Northrop Grumman UKWhat You’ll DoTake ownership of multiple teams’ deliverables and work with technical leads to define a path that ...

have within the community. Salary: £80,200 - £120,400 The Opportunity This is more than just a job; it’s a mission. As a Principal Software Engineer, you will play a pivotal role in designing, developing, and maintaining the critical infrastructure that powers our services. You will … meet customer needs. “My purpose is to lead a team of engineers, rise to the challenges presented, push the boundaries and define possible together.” – Principal Software Manager, Northrop Grumman UK What You’ll Do Take ownership of multiple teams’ deliverables and work with technical leads to define ...

## Principal Software Engineer - C#Applylocations: Londontime type: Full timeposted on: Posted Todayjob requisition id: R5616The TP ICAP Group is a world leading provider of market infrastructure.Our purpose is to provide clients with access to global financial and commodities markets, improving price discovery, liquidity, and distribution of data … consists of a dedicated team that executes complex, multi-leg synthetic strategies on behalf of institutional clients.**Role Overview**ICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands-on delivery of desktop platform automating and streamlining trading desk workflows. This is a high ...

Role description Principal software engineer- C#, .net, React, SQL, Azure with BFSI exp Location London Hybrid working with 3 days work from office -Mandatory Permanent/Fixed term/Contract inside IR 35 Immediate start Applicants must be legally authorized to work in the United Kingdom without … need for current or future visa sponsorship Role Overview We are seeking a talented Software Engineer to join the Solutions Team supporting a business-critical front-office application estate. The role involves working closely with business users, operations teams, and technology stakeholders to provide application support, deliver enhancements ...

Principal Software Engineer Salary to £80k, poss. higher for their ‘Unicorn’ candidate Role can be based remotely, as long as you can occasionally travel to London for client work (travel expenses paid) - approx. once a month. NB: Please only apply if you are a UK National, have … Proof of ID will be required prior to interview. This role is with a growing is a technology consultancy. This is a hands-on principal engineering role: architecture ownership across multiple services, technical leadership across teams, and direct contribution to engineering standards and hiring. Their successful candidate will ...

Principal Software Engineer Salary to £80k, poss higher for their Unicorn candidate Role can be based remotely, as long as you can occasionally travel to London for client work (travel expenses paid) - approx. once a month. NB: Please only apply if you are a UK National, have ...

Location: United Kingdom, London, LondonEmployment type: Full-TimeWork site: 0 days/week in-office – remoteRole type: Individual ContributorTravel: Less than 25%Profession: Software EngineeringDiscipline: Software EngineeringCompany: MicrosoftOverviewIn the Microsoft Frontier Company Engineering team, you won’t just build software; you’ll deliver real outcomes for some … embedding directly within customer teams to solve their toughest challenges, side-by-side, and shipping production-ready solutions in days, not months. As a Principal Software Engineer, you will bring strong software design and engineering expertise, building reliable systems and production-ready services that turn ideas ...

Title: Principal Software Engineer, AI InnovationCareer Architecture Role: Software EngineerCareer Architecture Tier: E35 (Principal, Expert Track)Job Summary:This is a founding engineer role in a new, innovation-focused team being built from scratch within Pearson's Enterprise Innovation function. The mission … moving, early-stage environments.Learning to Learn, Adaptability, Ethical Responsibility (Effective–Advanced): Embrace new technologies and maintain high ethical standards.Qualifications (Education & Experience):Extensive experience in software engineering and AI innovation, with a broad full-stack skillset.Proven track record of working on early-stage or 01 products, shaping direction rather than ...

Principal Engineer Location: Waterloo, London, England, UK | Hybrid (1 day per week in office) Who We Are At 8th Light, we bring life to the best ideas. Founded in 2006 and headquartered in Chicago, we are a technology solutions consultancy that partners with organisations from early-stage startups … world's largest companies. We take on hard software challenges and turn them into durable results. We build agentic products, the platforms they run on, and the engineering and design at every layer. Our commitment to quality means we deliver solutions we’re truly proud of, while our curiosity ...

highly-skilled, innovative and passionate group of people – Team AALTO. Together, we can Unlock Stratospace.About The RoleWe’re looking for an experienced, hands-on Principal Software Engineer to take a senior technical role within a multidisciplinary team developing safety-critical aircraft software. This is an opportunity … work close to the product, influence engineering decisions and help shape robust airborne software that will operate in demanding real-world environments.You’ll design, develop, verify and maintain embedded software primarily in C, with C++ and Python also part of the engineering toolkit. Working across the full software ...