1 to 25 of 26 Remote Principal Software Engineer Jobs in London

Principal Software Engineer – Cards & Credit (Python, Java, Clojure, AWS) 💰 Up to £135,000 + bonus (15-22%) + annual equity 🖥️ Python, Distributed Systems, High-Scale Architecture 📍 London, hybrid working (2 days/week) 🤝 Leading business lending platform I'm partnered with one of the UK’s most successful fintech scale-ups who have built a platform helping … They’ve recently launched a new product line which has become the company’s highest-growth area, with its own dedicated leadership and roadmap. They’re now hiring a Principal Engineer to become the technical lead across two core engineering teams working in the card and credit space. This is a critical hands-on IC role driving architecture … days/week in their London office (no fixed days) Be part of a high-ownership role with real scope to shape the success of a growing product Principal Software Engineer – Cards & Credit (Python, Java, Clojure, AWS More ❯

Principal Software Engineer – Cards & Credit (Python, Java, Clojure, AWS) 💰 Up to £135,000 + bonus (15-22%) + annual equity 🖥️ Python, Distributed Systems, High-Scale Architecture 📍 London, hybrid working (2 days/week) 🤝 Leading business lending platform I'm partnered with one of the UK’s most successful fintech scale-ups who have built a platform helping … They’ve recently launched a new product line which has become the company’s highest-growth area, with its own dedicated leadership and roadmap. They’re now hiring a Principal Engineer to become the technical lead across two core engineering teams working in the card and credit space. This is a critical hands-on IC role driving architecture … days/week in their London office (no fixed days) Be part of a high-ownership role with real scope to shape the success of a growing product Principal Software Engineer – Cards & Credit (Python, Java, Clojure, AWS More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Principal Engineer | AI & Cloud | £85k | Remote (UK) We’re working with a high-growth tech company delivering cutting-edge AI products—and they’re looking for a Principal Engineer to lead the charge in scaling their platforms, defining cloud and AI architecture, and mentoring a talented engineering team. In this hands-on leadership role, you'll … set the technical direction across their full product suite, influence strategic decisions, and stay close to the code. It’s perfect for someone ready to grow beyond a senior engineer/architect role into broader impact and ownership. 🔧 Tech Stack: Cloud: Azure (deep experience required), plus AWS and GCP Languages: Python Infra: Terraform, CI/CD, DevOps AI/ More ❯

Tech Principal Location: London, United Kingdom Type: Full-Time (hybrid working – home and central office) This is a hands-on leadership role with significant influence across DevOps, architecture design, database integration, team management, and product direction. You will coordinate a rapidly growing engineering team and play a pivotal role in enabling scalable, high-performance solutions that support the firm … frontend (e.g., TypeScript, React) technologies. Strong understanding of modern database technologies and integration patterns. Familiarity with CI/CD pipelines, containerization, and serverless architecture. Professional Experience 6+ years in software engineering, including leadership and architectural responsibilities. Experience managing agile cross-functional teams. Background in SaaS platform development; experience in sustainability or ESG domains is a plus. Soft Skills Strong More ❯

Tech Principal Location: London, United Kingdom Type: Full-Time (hybrid working – home and central office) This is a hands-on leadership role with significant influence across DevOps, architecture design, database integration, team management, and product direction. You will coordinate a rapidly growing engineering team and play a pivotal role in enabling scalable, high-performance solutions that support the firm … frontend (e.g., TypeScript, React) technologies. Strong understanding of modern database technologies and integration patterns. Familiarity with CI/CD pipelines, containerization, and serverless architecture. Professional Experience 6+ years in software engineering, including leadership and architectural responsibilities. Experience managing agile cross-functional teams. Background in SaaS platform development; experience in sustainability or ESG domains is a plus. Soft Skills Strong More ❯

Our Principal Software Engineers are responsible for leading and delivering strategically significant, complex client engagements across our portfolio of clients. We believe that great delivery stems from a thorough understanding of our clients and their needs, strong discipline skills and subject matter expertise, excellent leadership and a clear vision of lasting and effective change in a public sector … environment. We expect our Principal Software Engineers to bring all of that and enthuse our delivery teams with the same passion. The successful candidate will lead the Software Engineering aspects of our client engagements while overseeing the wider delivery within the account (or industry) when appropriate. In addition, our Principal Software Engineers are responsible for … lasting, trusted advisor relationships. They will also oversee multiple, concurrent client deliveries to help ensure quality and drive the sharing of best practice across our engagements and industries. Our Principal Software Engineers are members of the Software Engineering Practice leadership team with the responsibility to develop the capability of the practice to meet business needs and to More ❯

Principal Software Engineer Note: The business are hiring for Senior-Principal Engineers Principal Engineer TypeScript, React, NextJS, NestJS, Python At Wave Talent, we don't want to consume any more of your time trying to decipher job descriptions to identify the information you need. Instead, we spoke with you all to understand the key … to give you more info. We’ve partnered with a high-growth AI technology company who are pushing the boundaries in industrial tech, and we’re hiring Senior to Principal Engineers to join their mission-critical platform team. This role is on-site 5 days a week and whilst this may change in the future, this is currently not … complex systems, mentoring engineers, and driving technical excellence across the team. We'd love to chat with you about this position if: ✅ You’ve got extensive experience as a Principal Engineer, Staff Engineer, or in a senior full-stack engineering role, ideally within fast-paced, high-growth tech environments. ✅ You’re highly proficient in TypeScript, React, NextJS More ❯

Principal Software Engineer Note: The business are hiring for Senior-Principal Engineers Principal Engineer TypeScript, React, NextJS, NestJS, Python At Wave Talent, we don't want to consume any more of your time trying to decipher job descriptions to identify the information you need. Instead, we spoke with you all to understand the key … to give you more info. We’ve partnered with a high-growth AI technology company who are pushing the boundaries in industrial tech, and we’re hiring Senior to Principal Engineers to join their mission-critical platform team. This role is on-site 5 days a week and whilst this may change in the future, this is currently not … complex systems, mentoring engineers, and driving technical excellence across the team. We'd love to chat with you about this position if: ✅ You’ve got extensive experience as a Principal Engineer, Staff Engineer, or in a senior full-stack engineering role, ideally within fast-paced, high-growth tech environments. ✅ You’re highly proficient in TypeScript, React, NextJS More ❯

Principal Engineer – ClimateTech | Tech Strategy for a New Platform London – 1 day a week Up to £130,000 plus stock Typescript | Python | GraphQL | AWS Principal Engineer – We have been exclusively engaged by a leading ClimateTech business to hire a Principal Engineer who will provide key strategic direction for their growth plans in 2024. The … Principal Engineer will report to the CTO and be responsible for shaping the technical roadmap for their platform which provides petabyte volumes of data for genuine climate impact. The Principal Engineer will be their first hire at this level, providing technical leadership to an Engineering function of approximately 40 Engineers across Software, Data and SRE. … although, given the importance of the role, it would be expected that you’d come to the office so you need to be commutable to London. What will the Principal Engineer do? The role will broadly has three facets: You will provide architectural oversight around APIs, Data and Infrastructure, prioritising domain-driven design to align technical decisions with More ❯

Principal Java Software Engineer London (Hybrid – 1–2 days/week onsite) 🚀 Join a FinTech Powering the Future of Payments Are you an experienced Senior/Principal Java Software Engineer who thrives in a fast-paced, agile environment? Passionate about high-throughput, real-time systems? This is your opportunity to help shape the core …/week in a London office 🌍 Opportunity to collaborate with major global banks 🚀 Fast-paced, product-led environment where your voice matters If you're a motivated Senior/Principal Engineer ready to tackle complex challenges and deliver meaningful change, hit apply – and shape the future of payments with us. More ❯

Principal Kotlin Developer – GreenTech Up to £150k | Hybrid – London (2 days/week) We’re excited to be working with a high-growth GreenTech company that’s on a mission to make EV charging smarter for everyone. Backed by cutting-edge technology and a bold vision, they’re transforming the way drivers power their vehicles – aligning energy use with … the most efficient times to benefit both people and the planet. As a Principal Developer you will: Build and maintain backend infrastructure in Kotlin , using Spring Boot or Ktor Write clean, secure, well-tested code for API-first products Influence architecture, propose new tech, and shape technical direction Collaborate cross-functionally to deliver value iteratively Mentor teammates and support … hiring through technical interviews Stay current on industry trends and continuously improve how the team works A great Principal Developer will have: Solid Kotlin experience (or strong JVM) Familiarity with Spring Boot or similar frameworks Passion for scalable, API-led backend systems Strong grasp of software engineering principles (e.g. SOLID, design patterns) Clear communicator with the ability to More ❯

Principal Kotlin Developer – GreenTech Up to £150k | Hybrid – London (2 days/week) We’re excited to be working with a high-growth GreenTech company that’s on a mission to make EV charging smarter for everyone. Backed by cutting-edge technology and a bold vision, they’re transforming the way drivers power their vehicles – aligning energy use with … the most efficient times to benefit both people and the planet. As a Principal Developer you will: Build and maintain backend infrastructure in Kotlin , using Spring Boot or Ktor Write clean, secure, well-tested code for API-first products Influence architecture, propose new tech, and shape technical direction Collaborate cross-functionally to deliver value iteratively Mentor teammates and support … hiring through technical interviews Stay current on industry trends and continuously improve how the team works A great Principal Developer will have: Solid Kotlin experience (or strong JVM) Familiarity with Spring Boot or similar frameworks Passion for scalable, API-led backend systems Strong grasp of software engineering principles (e.g. SOLID, design patterns) Clear communicator with the ability to More ❯

Job Title: Principal Software Engineer Entity: Aventum Department: Technology Location: London/Hybrid Who We Are Since its inception, Aventum Group has sought a different approach to insurance. We are on a mission to be the ‘most inspiring specialty (re)insurance group in the world’. At the heart of Aventum are our people. Working together in … individual needs, supporting their unique goals and ambitions. Role Summary You will assume a pivotal role, leveraging your extensive expertise to drive innovation and excellence across all facets of software development. In addition to spearheading the design, development, and maintenance of sophisticated software solutions, you will take a lead role in mentorship, software design and architecture, and … championing secure software development practices throughout the software development lifecycle. Drawing from your wealth of experience with multiple programming languages, advanced software development methodologies, and industry best practices, you will serve as a beacon of knowledge and inspiration, guiding and mentoring both seasoned and junior team members to unlock their full potential. Your strategic and technical guidance More ❯

band: £110,000 - £135,000 Equity options: 0.30% - 0.5% Hybrid working policy: Minimum three days a week in our Holborn office Experience level: At least seven years in commercial software engineering If you're looking to join an exceptional, fast-paced, and growing team building innovative products in FinTech, check out the full job description below and apply! Mission … high risk and complex investment product that may not be suitable for every investor. The role As we approach the launch of our product, we are looking for a Principal Software Engineer to strengthen our engineering team. You will have extensive commercial experience designing, building and maintaining systems used in critical services or those handling significant volumes … of continuous learning and improvement Ensure best practice through example and continual team feedback Root causing real-time production issues in a timely manner Taking a pragmatic approach to software development Your background Extensive experience in software engineering, with a focus on designing, building, and maintaining large-scale systems Proven track record of working with critical services or More ❯

Python Engineer - (Front Office) £800-£900/day (Inside IR35) | 6-month rolling contract | Hybrid (3 days in office) | London A major financial player is hiring a hands-on Python engineer to support one of their front office quant focused investment teams. This is a front-office aligned role within technology, partnering directly with quants and traders to … libraries like pandas and NumPy Experience working in front office environments Familiarity with data pipelines and cloud infrastructure Pragmatic, detail-oriented, and able to work independently Experienced Python-focused Software/Data Engineer with a front office background and experience working with quants? Apply now for a fast turnaround. This is an initial 6-month contract with strong More ❯

Python Engineer - (Front Office) £800-£900/day (Inside IR35) | 6-month rolling contract | Hybrid (3 days in office) | London A major financial player is hiring a hands-on Python engineer to support one of their front office quant focused investment teams. This is a front-office aligned role within technology, partnering directly with quants and traders to … libraries like pandas and NumPy Experience working in front office environments Familiarity with data pipelines and cloud infrastructure Pragmatic, detail-oriented, and able to work independently Experienced Python-focused Software/Data Engineer with a front office background and experience working with quants? Apply now for a fast turnaround. This is an initial 6-month contract with strong More ❯

Are You a Staff or Principal Software Engineer looking for a new challenge? If so, Techmunity are hiring on behalf of a rapidly scaling European AI company based in Central London. Following a recent successful fundraise, they’re entering an exciting phase of growth, scaling their engineering team to 11+ and investing heavily in product development. About … and is excited by the chance to shape the foundations of a high-growth product and team. What They’re Looking For They’re hiring at either Staff or Principal Engineer level, depending on your experience. You’ll lead the implementation, expansion, and reliability of the company’s core systems. For those with leadership ambition, there’s a … to scale the product and the team while keeping quality and user experience front and centre. You’ll Likely Have Experience In: Significant impact as a Senior, Staff or Principal Engineer, ideally in startup or scale-up environments. Technical leadership, either as a Tech Lead or hands-on Engineering Manager. Building and scaling production systems using most of More ❯

Are You a Staff or Principal Software Engineer looking for a new challenge? If so, Techmunity are hiring on behalf of a rapidly scaling European AI company based in Central London. Following a recent successful fundraise, they’re entering an exciting phase of growth, scaling their engineering team to 11+ and investing heavily in product development. About … and is excited by the chance to shape the foundations of a high-growth product and team. What They’re Looking For They’re hiring at either Staff or Principal Engineer level, depending on your experience. You’ll lead the implementation, expansion, and reliability of the company’s core systems. For those with leadership ambition, there’s a … to scale the product and the team while keeping quality and user experience front and centre. You’ll Likely Have Experience In: Significant impact as a Senior, Staff or Principal Engineer, ideally in startup or scale-up environments. Technical leadership, either as a Tech Lead or hands-on Engineering Manager. Building and scaling production systems using most of More ❯

Our Principal Software Engineers are responsible for leading and delivering strategically significant, complex client engagements across our portfolio of clients. We believe that great delivery stems from a thorough understanding of our clients and their needs, strong discipline skills and subject matter expertise, excellent leadership and a clear vision of lasting and effective change in a public sector … environment. We expect our Principal Software Engineers to bring all of that and enthuse our delivery teams with the same passion. The successful candidate will lead the Software Engineering aspects of our client engagements while overseeing the wider delivery within the account (or industry) when appropriate. In addition, our Principal Software Engineers are responsible for … lasting, trusted advisor relationships. They will also oversee multiple, concurrent client deliveries to help ensure quality and drive the sharing of best practice across our engagements and industries. Our Principal Software Engineers are members of the Software Engineering Practice leadership team with the responsibility to develop the capability of the practice to meet business needs and to More ❯

Job Requisition ID # 25WD89838 Position Overview As a Principal Software Engineer at Autodesk Research, you will work on new ML-powered product features that help our customers imagine, design, and make a better world. You are a software engineer passionate about solving problems and building solutions. You will collaborate with scientists, research engineers, and … platform engineers to build and deploy scalable data pipelines for machine learning. Your expertise spans data processing and distributed systems, with a focus on software engineering. You will work at the intersection of research and product, building generative AI features in Autodesk products. You will report to: Manager, Autodesk Research, Generative AI. Location: London or remote (within UK). … ambiguous, newly forming areas. Skilled in building prototypes, maintainable systems, and owning developed systems. Has a growth mindset and passion for learning. Learn More About Autodesk Autodesk creates innovative software used in various industries, helping turn ideas into reality and transforming how things are made. We pride ourselves on our culture, which guides our work, relationships, and global impact. More ❯

Principal Java Software Engineer London (Hybrid – 1–2 days/week onsite) Join a FinTech Powering the Future of Payments Are you an experienced Senior/Principal Java Software Engineer who thrives in a fast-paced, agile environment? Passionate about high-throughput, real-time systems? This is your opportunity to help shape the core …/week in a London office Opportunity to collaborate with major global banks Fast-paced, product-led environment where your voice matters If you're a motivated Senior/Principal Engineer ready to tackle complex challenges and deliver meaningful change, hit apply – and shape the future of payments with us. More ❯

T24 Principal Software Engineer Location: London - Hybrid 3 days a week in the office Duration: Initially 6 months Rate: £market rate The company: Global Technology company delivering digital transformation to a financial services end client. The knowledge, experience and qualifications you need Wide, detailed, and up-to-date experience of the technologies and tools in your area. … Plenty of experience in the full lifecycle of developing software from the first idea to the final execution Mandatory to have L3 code development skills with hands-on experience. TAFJ knowledge and code library management experience. Local code development skill using Info Basic and TAFJ componentized codes. In-depth Technical knowledge of T24 Customization and OFS processing. Linux basics. … Agile delivery experience, especially around discovering requirements and preparing user stories. A good understanding of testing approaches and putting testability at the heart of software design and development. The ability to establish relationships with stakeholders at all levels A good understanding of system integration patterns and associated technologies. Excellent written and spoken English, and communication skills to help manage More ❯

belief that crypto networks and theblockchain have the power to fundamentally change the art world by creating greater choice,independence, and opportunity for artists, creators, and collectors. The Role: Principal Software Engineer At the Principal level, engineers are expected to master their immediate domain and have broad impactacross other engineering teams. This person will define technical … direction, unblock and mentorteammates, and tackle the most complex system and architectural challenges. Principal engineers aredistinguished by their organization-level impact and focus on high-leverage activity, in addition to directcode contribution. Beyond pure technical focus, Principals bridge the gap between management and engineering - they obsess over not only the how, but also what and why, and are able … to disseminate thiscontext to both audiences, up-leveling the entire organization in depth and delivery. Responsibilities: Influence leadership/CTO organization and collaborate with other Principal Engineers across the organization to build the right software architecture for Nifty Gateway. Design, implement, deploy, and maintain services supporting multiple engineering teams. Advocate and model technical and operational excellence. Drive large More ❯