15 of 15 Remote/Hybrid Principal Software Engineer Jobs in London

Principal Software Engineer/Developer (C# .Net AWS Python) London/WFH to £130k Would 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 … progression? As a 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 ...

Principal Software Engineer/Developer (Python AI) London/WFH to £120k Do you have expertise with backend Python combined with a strong knowledge of Agentic AI? You could be progressing your career at an established FinTech business specialising in automated investment reporting . As a Principal Software Engineer you'll be in a product focused engineering role, combining hands-on Python development with technical ownership. You'll lead projects end to end, shape architecture and drive the delivery of new product capabilities, working across backend engineering, data processing and complex financial systems. ...

Principal Software Engineer Department: Technology Employment Type: Permanent - Full Time Location: London Reporting To: Head of Engineering Description Defaqto is one of the most trusted names in UK financial services research and ratings, and our technology turns deep market data into decisions that advisers, providers and consumers … rely on every day. The credibility of that output rests on the quality of our engineering. We are looking for a Principal Software Engineer to be the most senior individual contributor in our Technology function. Reporting to the Head of Engineering and working closely with ...

Principal Software Engineer/Developer (Python AI) London/WFH to £120k Do you have expertise with backend Python combined with a strong knowledge of Agentic AI? You could be progressing your career at an established FinTech business specialising in automated investment reporting . As a Principal Software Engineer you'll be in a product focused engineering role, combining hands-on Python developmen click apply for full job details ...

Principal Software Engineer/Developer (C# .Net AWS Python) London/WFH to £130k Would 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 … progression? As a Principal Software Engineer you will architect and build highly performant and scalable solutions using the Microsoft tech stack an click apply for full job details ...

Compliance (formerly DRS) audits every worked hour against working-time legislation and NHSE standards so that payroll is exact. About the Role As our Principal Engineer, you will lead all core software engineering work across the entire Lantum platform and service architecture to scale Lantum’s next … covers back-end, front-end, architecture, infrastructure, DataOps, AI SDLC, and security realms and disciplines. Responsibilities you own core, end-to-end software engineering processes and infrastructure; you ensure that our existing core revenue-generating systems run without interruption under strict SLAs while optimising them, expanding their capabilities ...

looking for an experienced Principal Software Engineer to join a growing technology business developing complex autonomous systems. Reporting directly to the CTO, you'll combine hands-on engineering with technical leadership, shaping architecture, supporting engineers and facilitating Scrum delivery. Experience developing software in mission-critical … safety-critical real-time environments is essential. Ideally, you'll bring experience in autonomous systems, robotics or flight software, within aviation, aerospace, drones/UAVs, autonomous vehicles, MOD/defence or similar. This role could also be suited to Quant Engineers with experience working across real-time systems. Location ...

Senior/Principal Software Engineer Application Deadline: 30 October 2026 Department: Software Engineering Employment Type: Permanent Location: London (Hybrid) Compensation: £70,000 - £100,000/year Description Please note: This role requires applicants to hold active, or recently active, SC or DV clearance. This role also … kind that have to be secure, scalable, and actually usable by the people who rely on them. We’re looking for Senior and Principal Engineers who want to shape meaningful systems, influence technical direction, and work alongside capable people who care about doing the job properly. You’ll help ...

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, contribute to architecture … engineering excellence, and collaborate to enhance the bank's software capabilities. You will lead engineering teams, drive architecture roadmaps, and deliver end-to-end solutions leveraging Java, Spring Boot, ReactJS and #J-18808-Ljbffr ...

Client Server Limited is seeking a Principal Software Engineer in London/Hybrid to architect and deliver scalable C#/.NET services on AWS, with optional Python work. You will influence product direction, champion best practices, and guide cross-functional teams in fast-paced sprints. The role ...

Simple Machines, a boutique technology firm, seeks a Principal Software Engineer to lead the design and delivery of large-scale data platforms. You will own backend services, APIs, data pipelines, and cloud infrastructure while collaborating with clients and internal teams. You’ll work across the full stack ...

Gloucester, and Manchester (England); we are committed to investing in British careers and technology development. Role & Responsibilities You will be part of our experienced software dev function, working in a cross-functional team, delivering and deploying critical software across a variety of business areas. Design and build software … sector this team is working in, we require all candidates to hold an active eDV clearance for this role. Location: London, Permanent, Onsite. Role: Principal Software Engineer. About Raytheon UK, an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. ...

powered and data-driven businesses . We work with enterprise organisations on a global stage, reinventing how they design, build, and operate AI powered software at scale with speed. Our Purpose: We're on a mission to reinvent what's possible with AI in enterprise environments . Our Software … working at the absolute cutting edge of what's possible with today's most advanced AI technologies. Key Responsibilities Define and evolve the overall software architecture and technology vision for the organisation. Provide deep technical guidance to multiple engineering teams across projects. Lead the design and delivery of large ...

Stack JavaScript/Typescript, with experience across any of the modern core frameworks from frontend through to API/service developmentAn end-to-end engineer, comfortable and experienced designing and deploying to cloud environments (e.g. GCP, Azure, AWS + CI/CD)Someone who takes pride in their craft ...

people at UiPath believe in the transformative power of automation to change how the world works. We’re committed to creating category-leading enterprise software that unleashes that power. To make that happen, we need people who are curious, self-propelled, generous, and genuine. People who love being part ...