32 principal engineer jobs found

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission We are a fast‑growing startup building scalable, high‑quality digital products at pace. Our success depends on strong engineering foundations, pragmatic architecture, and ways of working that enable teams to deliver value continuously. We are looking for a Principal Engineer to play a critical leadership role across our engineering and architecture community. This is an opportunity to shape how we build, not just what we build—embedding effective engineering processes, modern delivery practices, and a culture of continuous improvement as the company scales. This role suits a senior technologist who thrives in ambiguity, enjoys influencing without authority, and wants to leave a lasting imprint on how engineering operates within a growing organisation. About the Opportunity As a Principal Engineer, you will...

This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission We are a fast‑growing startup building scalable, high‑quality digital products at pace. Our success depends on strong engineering foundations, pragmatic architecture, and ways of working that enable teams to deliver value continuously. We are looking for a Principal Engineer to play a critical leadership role across our engineering and architecture community. This is an opportunity to shape how we build, not just what we build—embedding effective engineering processes, modern delivery practices, and a culture of continuous improvement as the company scales. This role suits a senior technologist who thrives in ambiguity, enjoys influencing without authority, and wants to leave a lasting imprint on how engineering operates within a growing organisation. About the Opportunity As a Principal...

Principal Engineer – SC Eligible – Government Projects This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission We are a fast‑growing startup building scalable, high‑quality digital products at pace. Our success depends on strong engineering foundations, pragmatic architecture, and ways of working that enable teams to deliver value continuously. We are looking for a Principal Engineer to play a critical leadership role across our engineering and architecture community. This is an opportunity to shape how we build, not just what we build—embedding effective engineering processes, modern delivery practices, and a culture of continuous improvement as the company scales. This role suits a senior technologist who thrives in ambiguity, enjoys influencing without authority, and wants to leave a lasting imprint on how engineering operates within a growing...

Principal Android Engineer (Contract, Outside IR35) A lot of Principal roles take you away from the code. Here you'll lead the technical side of a hedgehog lab team delivering a UK bank's Android app as it moves to Jetpack Compose, and still build alongside them. It's a contract outside IR35, expected to start in January 2027 and run for around 6 months. You'll work remote first, [on-site expectation]What's in it for you You'll shape how a large banking app moves to Compose, from the approach the team takes to the standards it follows. You'll lead a consultancy team that owns the delivery, with engineers who take testing and code reviews seriously. You'll add regulated banking work to your CV, which carries weight on future contracts. Who you'll be doing it for hedgehog lab is a digital product consultancy with 20 years of experience helping public and private sector organisations through digital transformation. We're B Corp and Great Place to Work...

The Infected Blood Compensation Authority (IBCA) is a new arm’s-length body which is being set up, at unprecedented pace, to administer compensation to people whose lives have been impacted by the infected blood scandal   A rare opportunity to lead cutting-edge software engineering across the breadth of a public service making a real difference. Joining IBCA early in the service lifecycle allows for the Principal Software Developer to influence tech decisions, build capability, and implement best in class engineering standards.   As the Principal Software Engineer, you will be an experienced voice in the organisation, leading and coaching colleagues to design and develop applications that meet the user needs, and comply with government technology and design standards. You will be responsible for the development of frontend and backend services, applying a rigorous testing approach to ensure applications are...

The Infected Blood Compensation Authority (IBCA) is a new arm’s-length body which is being set up, at unprecedented pace, to administer compensation to people whose lives have been impacted by the infected blood scandal   A rare opportunity to lead cutting-edge software engineering across the breadth of a public service making a real difference. Joining IBCA early in the service lifecycle allows for the Principal Software Developer to influence tech decisions, build capability, and implement best in class engineering standards.   As the Principal Software Engineer, you will be an experienced voice in the organisation, leading and coaching colleagues to design and develop applications that meet the user needs, and comply with government technology and design standards. You will be responsible for the development of frontend and backend services, applying a rigorous testing approach to ensure applications are...

We are seeking a highly experienced hands on Senior Technical Lead engineer to serve as the primary technical anchor for a large-scale Wealth Management Replatforming initiative. This individual will act as the strategic bridge between business stakeholders, enterprise architecture teams, and distributed engineering pods, driving the design and delivery of an AI-first platform ecosystem.   The ideal candidate will combine deep technical expertise across data, integration, cloud, and AI with strong stakeholder management capabilities and the ability to influence enterprise-wide technology decisions.     Key Responsibilities Technical Leadership Lead architecture, solution design, and technical governance across the replatforming program. Define and drive the target-state architecture spanning data, integration, AI, and customer platforms. Establish engineering standards, delivery practices, and architectural guardrails. Ensure...

We are looking for an experienced Principal Snowflake Data Engineer to join our growing team building our strategic data platform as we look to adopt best in class data governance and democratise data around the business. The successful candidate will play a pivotal role in shaping and executing our data strategy, leveraging our data assets to the full, elevating our decision-making, streamlining processes, and drive innovation within our organisation.     You will be part of the long-standing Data Platform team using Agile methods to deliver solutions on top of our cloud platform. Starting with Snowflake as a foundational component, we will look to integrate other technologies and grow capability to meet the demands of the business. You will work closely with a variety of business areas and be involved in all aspects of the Secure System Development Lifecycle (S-SDLC). We operate in a collaborative and inclusive environment, where each team member 's...

Engagement : 3 month contract Vetting : BPSS minimum   Tech : .NET 10 | AWS & Terraform | Azure AI Foundry | Governance & assurance   ABOUT THE ROLE   We are looking for an AI Engineering Lead to own the technical side of governance and assurance, and the architecture, infrastructure and delivery of an AI-enabled service estate used in UK central government.   You will take the service through TDA, service assessment, Secure by Design and DPIA, and defend its design in front of technical boards and the SIRO/DPO. You will also lead the development team day to day and set the engineering standard.   The estate is a .NET 10 hub application plus four tool services, running on AWS with AI capabilities delivered through Azure AI Foundry.   WHAT YOU'LL OWN Governance and assurance TDA and assurance gates: Own the technical side of client governance: TDA, service assessment, Secure...

An active SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. (Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.)    As a macOS Infrastructure Engineer you'll be instrumental in shaping the infrastructure and end user device capabilities that support vital services for The Cabinet Office, Government Commercial Authority (GCA) and the Government Property Agency (GPA), impacting civil servants and ministerial bodies across the nation.   You won't just be maintaining systems, you'll be working alongside Technical Architects and Principal Engineers, you'll design, maintain and upgrade our end user devices infrastructure, tackling challenges head on and ensuring seamless service...

An active SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. (Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.)    As a macOS Infrastructure Engineer you'll be instrumental in shaping the infrastructure and end user device capabilities that support vital services for The Cabinet Office, Government Commercial Authority (GCA) and the Government Property Agency (GPA), impacting civil servants and ministerial bodies across the nation.   You won't just be maintaining systems, you'll be working alongside Technical Architects and Principal Engineers, you'll design, maintain and upgrade our end user devices infrastructure, tackling challenges head on and ensuring seamless service...

An active SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. (Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.)    As a macOS Infrastructure Engineer you'll be instrumental in shaping the infrastructure and end user device capabilities that support vital services for The Cabinet Office, Government Commercial Authority (GCA) and the Government Property Agency (GPA), impacting civil servants and ministerial bodies across the nation.   You won't just be maintaining systems, you'll be working alongside Technical Architects and Principal Engineers, you'll design, maintain and upgrade our end user devices infrastructure, tackling challenges head on and ensuring seamless service...

Role purpose:  The UK Parliament is seeking a highly experienced Principal Infrastructure Engineer (Identity) to provide technical leadership and hands-on engineering expertise across its enterprise identity and access management services. Working at the heart of a critical national organisation, you will lead the design, security, resilience and evolution of Parliament 's identity platforms, ensuring secure and reliable access for thousands of users and services. This role requires deep expertise in Active Directory, Microsoft Entra ID, hybrid identity and PKI, alongside the technical judgement to lead complex engineering decisions, resolve high-risk issues and drive strategic improvements across the identity estate. As a recognised subject matter expert, you will also mentor engineers, champion best practice and help shape the future direction of Parliament 's Identity and Access Management capabilities.   As a  Principle Infrastructure Engineer...

6 month rolling contract London - 2 days onsite   Job Purpose The Principal Lead provides technical leadership across six engineering capabilities: SAP, DevOps, Domain Services, Storefront, iOS and Android. Working between the Capability Leads and the Architecture team, they provide hands-on technical leadership and design support as a full-stack engineer, and are accountable for raising engineering standards and defining, building and embedding best-of-breed practices that make secure software development and built-in observability the default. They also act as the senior point of technical escalation, taking the lead to resolve issues where Engineers, Technical Leads or Capability Leads are stuck.   The Principal Lead will also lead the introduction of agentic development practices across the engineering organisation, moving teams beyond AI code completion towards AI agents that plan, build, test and review changes under clear human oversight....

Windows Infrastructure & Microsoft 365 Engineer (Power BI / Microsoft Fabric) Contract 6+ Months(Inside IR35) Canary Wharf, UK Hybrid (2 days a week)   Role Overview We are seeking an experienced Windows Infrastructure & Microsoft 365 Engineer to support the delivery of a strategic Microsoft Fabric / Power BI platform . The role will design, build, and implement Windows Server-based Power BI Gateway infrastructure and associated Microsoft 365 services, ensuring secure, resilient, and scalable operations across production and non-production environments. Key Responsibilities Design and implement Windows Server 2022 infrastructure supporting Microsoft Fabric and Power BI. Develop Low-Level Designs (LLDs), build standards, implementation guides, and operational documentation. Deploy and manage highly available Power BI Gateway clusters across multiple data centers. Configure and administer Microsoft Entra ID, RBAC,...

Windows Infrastructure & Microsoft 365 Engineer (Power BI / Microsoft Fabric) Contract 6+ Months(Inside IR35) Canary Wharf, UK Hybrid (2 days a week)   Role Overview We are seeking an experienced Windows Infrastructure & Microsoft 365 Engineer to support the delivery of a strategic Microsoft Fabric / Power BI platform . The role will design, build, and implement Windows Server-based Power BI Gateway infrastructure and associated Microsoft 365 services, ensuring secure, resilient, and scalable operations across production and non-production environments. Key Responsibilities Design and implement Windows Server 2022 infrastructure supporting Microsoft Fabric and Power BI. Develop Low-Level Designs (LLDs), build standards, implementation guides, and operational documentation. Deploy and manage highly available Power BI Gateway clusters across multiple data centers. Configure and administer Microsoft Entra ID, RBAC,...

The role sits within the Enterprise Technology team in the Office of the Chief Technology Officer which supports Parliament in delivering its democratic mission by providing secure, resilient and innovative technology services that are user centred and strategically aligned.   The ServiceNow Principal Infrastructure Engineer is a hands-on technical authority and implementer for Parliament's ServiceNow platform, holding design authority for the platform and working directly on its most complex and highest-risk engineering. The role is embedded within value streams, establishing the engineering vision, technical standards and quality assurance framework that govern design, configuration, development and operation, and proving those standards in practice. The post-holder drives resilience and maturity by focusing on complex technical risk, architectural health, and leading the technical response to major problem domains.   Reporting to the Service Owner, you will...

  Software / Controls Contractor (PLC) Mpac   Location: Hybrid / Tadcaster LS24, UK job type: Contract / Full-time Sector and subsector: Engineering Design Salary: Negotiable salary   Job Specification Job Name: Software Contractor Summary As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - desirable Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100).   Onsite work required...

Senior Delivery Manager - Appvia - Active UK Government Security Clearance required Internal Title: Senior Delivery Manager Location: London, UK (Hybrid - typically 1-2 days per week in office) Contract: Permanent or Contract Start Date: Immediate start (Early December) Package: £60,000 - £80,000 + 10% Bonus + 10% Shares + Benefits (see more below) Contract Day Rate: £600 Inside IR35   About Us Appvia is a specialist cloud, platform engineering, and AI enablement consultancy, helping organisations design, build, and operate modern cloud platforms at scale. We work across public and private sector organisations, delivering outcomes in complex and highly regulated environments. Our focus is on enabling teams to improve delivery performance, adopt modern engineering practices, and build secure, scalable platforms that support long-term change. Our work spans cloud migration, platform engineering, DevOps transformation, and...

Role overview The Principal Data Scientist will lead significant data science work across AWTG and client programmes, shaping technical direction, standards and delivery approaches. The role requires deep expertise in data science, strong leadership and the ability to turn advanced analytics into organisational impact. You will work with multidisciplinary teams across data, AI, software engineering, product, QA and delivery to create practical outcomes for clients and end users. Key responsibilities Lead the scoping, design and delivery of complex data science products, models and analytical solutions. Set standards for modelling, validation, reproducibility, coding, documentation and responsible AI practices. Identify opportunities to apply machine learning, predictive analytics, optimisation or advanced statistics to business challenges. Guide data scientists, analysts and engineers in selecting appropriate methods, architectures and tools....