1 to 25 of 72 Permanent Principal Engineer Jobs in London

Principal Engineer : Up to £650PD : Outside IR35 : Hybrid London : 3 months rolling A globally scaled technology business is seeking a Principal Engineer to define the next generation of its API platform. Operating at significant scale, this is a hands-on engagement with real influence over … architectural direction of a critical engineering pillar. Key responsibilities as a Principal Engineer: Defining and driving the architectural vision for a large-scale API ecosystem Designing cloud-native distributed systems at scale Building high-throughput event-driven services Leading on security, observability, performance, and maintainability Championing ...

PRINCIPAL DEVOPS ENGINEER- SC CLEARED PRINCIPAL DEVOPS ENGINEER- Permanent opportunity for a Principal DevOps Engineer with SC Clearance. - Salary up to £110,000 DOE - Hybrid opportunity with London based offices - To apply, please call Laura Jackson on , or email with an up-to-date … CV. WHO ARE WE We're hiring for DevOps Engineers at principal level to join a top consultancy delivering cutting-edge solutions for industry-leading Public Sector and Defence clients. You'll have the opportunity to work across multiple high-impact, innovative and mission-critical projects, shaping solutions that ...

Principal Engineer - Series A Scale Up - Up to £270,000 I'm currently looking for a Principal Engineer to join a high-growth, YC-backed AI startup based in London. It's a hands-on IC role focused primarily on scalable backend systems and genuinely … fixing hard systems problems that unlocked scale – Have real hands-on Python experience If this sounds like a fit, please get in touch. Principal Engineer - Series A Scale ...

Principal Engineer | TypeScript, Node, Azure | Global Environmental Data Non-Profit Powering Investment Decisions Salary: £75,000 £100,000 Hybrid (2 days a month London office) Im working with a genuinely purpose-led organisation that sits right at the intersection of data, climate, and global finance. Theyve built … with that comes the usual integration challenges. Systems that work, but dont always talk to each other cleanly. Youll come in as their first Principal Engineer, reporting into the CTO, with a remit to bring clarity and structure to how services integrate, while staying hands-on enough ...

.Principal/Consulting Engineer page is loaded## Principal/Consulting Engineerlocations: Oxford: Londontime type: Full timeposted on: Posted Todayjob requisition id: R112322**Principal Engineer****About the role:**As a Principal Engineer, you will help shape the technical direction of platforms used by the global … learning• Support teams in using AI-assisted development and production AI patterns where they add real value**Requirements:**• Experience working at senior, staff, or principal engineer level across multiple teams or domains• A track record of influencing technical decisions and supporting change at scale• Experience designing and evolving ...

Principal Software Engineer (Go/Systems) 🚀 Series B Scale Up 🔬 Life Sciences Salary : £170,000 plus package Location : Angel (3 days per week in office) Requirements : Backend engineering specialist, with expertise in Golang, Python, Rust, Kubernetes The Mission: Orchestrating Physical Reality 🤖 I am working with a Series … raised) disrupting the Life Sciences sector by building a cloud-to-hardware "Operating System" that automates human health. They are looking to hire a Principal Software Engineer who will be the technical heavyweight that 5–6 Staff Engineers rally behind. ⚡ The Technical Core The ecosystem is built ...

Principal Engineer - Permanent - £100,000 to £115,000 - Hybrid (2 days per week in London) Please note: This role does not offer sponsorship, and candidates must have full right to work in the UK. La Fosse has partnered with a customer engagement partner to recruit a Principal Engineer to join their growing team. This role is focused on shaping scalable, integration-led platforms, playing a key part in defining technical strategy and driving architectural decisions across a complex digital ecosystem. This is a great opportunity for someone who enjoys balancing architectural ownership with technical leadership ...

Principal Engineer - £650 outside IR35 - Hybrid (London office, twice a week) Please note: This is a contract role, and candidates must be able to commute to the London office twice per week. La Fosse has partnered with an established business to recruit a Contract Principal Engineer ...

Principal Engineer l Architecture l Design l Coaching l Typescript l AWS l Kafka l GraphQL l Lambda l £550-£625 per day l Outside IR35 l twice a week in London l 3 months We're hiring a Principal Engineer to step into a critical ...

Principal .NET Engineer (Azure/Microservices) Salary: Up to £100,000 + Bonus + Benefits Location: Coventry or Central London - Hybrid (2 days per week onsite) Working Hours: 40 hours per week - Full time Job Type: Permanent A globally established organisation is seeking an experienced Principal .NET … Engineer to shape the future of enterprise technology used by millions of customers. This role will focus on engineering leadership, modern architecture, cloud-native delivery and driving best practice across multiple teams within a high-scale digital environment. Responsibilities for the Principal .NET Engineer: Define and evolve ...

Principal Java Engineer (AWS/Microservices) Salary: Up to £100,000 + Bonus + Benefits Location: Coventry or Central London - Hybrid (2 days per week onsite) Working Hours: 40 hours per week - Full time Job Type: Permanent A globally established organisation is seeking an experienced Principal Java … Engineer to shape the future of large-scale digital platforms used by millions of customers. This role will focus on driving engineering excellence, defining technical standards and leading the design of scalable, high-availability systems across a modern cloud-native environment. Responsibilities for the Principal Java Engineer ...

Principal Java Engineer (AWS/Microservices) Salary: Up to £100,000 + Bonus + Benefits Location: Coventry or Central London - Hybrid (2 days per week onsite) Working Hours: 40 hours per week - Full time Job Type: Permanent A globally established organisation is seeking an experienced Principal Java … Engineer to shape the future of large-scale digital platforms used by millions of customers. This role will focus on driving engineering excellence, defining technical standards and leading the design of scalable, high-availability systems across a modern cloud-native environment. Responsibilities for the Principal Java Engineer ...

Principal Software Engineer Location: London - Hybrid Salary: Up to £110,000 + Bonus & Benefits We're looking for a Principal Software Engineer to join a global technology business whose platforms underpin consumer experiences used by millions of people every day. This is an established, scaled business … hybrid working arrangements Generous parental leave and family-friendly policies Strong support for career development and progression This is the right role for a Principal Engineer who is ready to move beyond squad-level impact and take on something bigger - shaping the architecture, the team, and the direction ...

Principal Engineer Post-Purchase & Fulfilment | London (Hybrid) | Up to £155,000 Principal Engineer's! Own the end-to-end architecture of how a physical product moves from factory floor to customer doorstep. Design led consumer brand with over 30 million customers worldwide. This is a rare ...

Principal Engineer Post-Purchase & Fulfilment | London (Hybrid) | Up to £155,000 Principal Engineer's! Own the end-to-end architecture of how a physical product moves from factory floor to customer doorstep. Design led consumer brand with over 30 million customers worldwide. This is a rare ...

Principal AI Engineer Up to £110,000 + Bonus Hybrid | London We’re partnered with a global leader in loyalty and customer engagement, looking for a Principal AI Engineer to join their London team. This role will include delivering customer centric solutions and scale production-grade … closely with the Head of AI Labs, you’ll lead the delivery of advanced AI systems that deliver real business impact. Responsibilities as a Principal AI Engineer: Lead end‐to‐end delivery of scalable, resilient AI/ML pipelines aligned to business goals. Build and deploy advanced ...

Principal Software Engineer | Node | TypeScript | APIs | AWS | AI | Microservices | 2 days per week Central London | £100,000-£110,000 + 15% bonus + benefits Method Resourcing are partnered with a global technology business undergoing a major phase of investment, particularly across cloud platforms, modern engineering practices … driven innovation. They’re now looking for a Principal Software Engineer to play a key role in shaping a new platform capability from the ground up. The role: This is a senior individual contributor role with strong architectural ownership. You’ll be working on a greenfield initiative, defining ...

Principal Data Engineer £120,000 + 20% bonus Hybrid | London We're working with a global branded entertainment business, operating across multiple international markets, to find a Principal Data Engineer who will shape the future of their data estate. This is a genuine player-coach role … trade-offs into plain language, and holding the line on what gets built right versus what gets fixed fast. Responsibilities as a Senior Data Engineer: Define the directional architecture for the new data estate, including Lakehouse, Medallion and Eventing patterns on Databricks and Azure Lead discovery of the legacy ...

Principal Platform Engineer – IoT/SaaS - AWS, Kubernetes, Terraform, Monitoring, Security Oliver Bernard are currently seeking a strong, Principal Platform Engineer to join a growing scale-up client of ours who operate in the IoT/SaaS space. Scaling globally, our client are on the lookout … seasoned Platform Engineer who can come in and have ownership over their platform estate; help reshape their DevOps, SRE and Platform processes; and have their own stamp on things from a broader technological perspective across the team. The existing Platform team consists of 7-8 engineers who work closely ...

Description Principal Engineer Post-Purchase & Fulfilment | London (Hybrid) | Up to £155,000 Principal Engineer's! Own the end-to-end architecture of how a physical product moves from factory floor to customer doorstep. Design led consumer brand with over 30 million customers worldwide. This ...

Principal DevOps Engineer £80,000 - £105,000 per annum GBP Performance Bonus, Private Healthcare, 25 days holiday + more! Hybrid WORKING Location: Central London, Greater London - United Kingdom Type: Permanent Role : Principal DevOps Engineer (GCP) Location : London or Bristol Salary : £80,000 - £105,000 per annum … Package : Performance related bonus, Generous pension private healthcare 25 days holiday + bank holidays. Role Overview A market-leading consultancy is seeking three Principal Cloud DevOps Engineers with deep GCP expertise for their Digital Data team. Based ideally in Bristol (London also considered), this role focuses on delivering ingenious ...

Principal Data Engineer Location: Remote Salary: Up to £95,000 Sponsorship: Not available VIQU have partnered with a nationally recognised organisation that has recently completed a full migration from on-premise infrastructure to Google Cloud Platform (GCP) and is now building a modern, domain-oriented Data Mesh. This … data platform and embed engineering excellence across multiple product domains. This is not a step-up role. They will only consider candidates with proven Principal or Lead-level experience , including clear ownership of engineers, standards, and cross-domain architectural direction. The Role As Principal Data Engineer ...

Principal Data Engineer Salary: £125,000 + Benefits/Bonus Own the rebuild of a modern data platform from the ground up. Were working with a business in the middle of a high-impact data transformationmoving away from legacy constraints towards a scalable, cloud-first architecture. Theyre looking … Principal Data Engineer to take a leading role in that journey. This isnt a role where you inherit a polished environment. Its an opportunity to shape, modernise, and influence from refactoring legacy pipelines to building best-in-class data products using tools like Databricks, Azure, and GCP. Youll ...

Principal AI Engineer | Up to £120,000 + Bonus | London (Hybrid) You’ll play a key role in building and shaping a brand-new AI capability within a well-established, global engineering and technology consultancy. You’ll operate as a senior, hands-on AI engineer, delivering production … practical, commercially valuable way. Stack: Python, PyTorch, LLMs, TensorFlow, scikit-learn, MLOps tooling What do you need? Strong experience as an AI Engineer/ML Engineer delivering production systems Hands-on experience with ML frameworks (PyTorch, TensorFlow, scikit-learn) Proven experience deploying models into live environments Strong understanding ...

Principal Full Stack Software Engineer Location: Hybrid - 1-2 days a week Salary: £110-130k + 10% Bonus Type: Permanent No Sponsorship Available Overview: We are seeking a Principal Full Stack Software Engineer to lead the design, development, and delivery of scalable, high-performance applications … decisions and long-term roadmap planning Ensure high levels of system reliability, performance, and security Required Skills & Experience: Extensive experience as a Full Stack Engineer with a strong track record in senior or principal-level roles Expertise in JavaScript/TypeScript and modern frontend frameworks (e.g., React, Angular ...