1 to 25 of 159 Senior Software Engineer Jobs in London

Senior Software Engineer - Clean Room page is loaded Senior Software Engineer - Clean Room Apply locations London time type Full time posted on Posted 18 Days Ago job requisition id JR011619 LiveRamp is the data collaboration platform of choice for the world's most innovative companies. A groundbreaking leader in consumer privacy, data ethics, and … the value of their first-party data while staying on the forefront of rapidly evolving compliance and privacy requirements. You will: Lead the design, development, and implementation of complex software solutions for LiveRamp's Clean Room platform. Collaborate with cross-functional teams, including product managers, designers, and other engineers, to deliver high-quality features. Provide technical mentorship and guidance … junior engineers in the team. Continuously improve the performance, scalability, and reliability of existing systems. Participate in code reviews and ensure that the team adheres to best practices in software development. Keep up-to-date with the latest industry trends and technologies to continuously evolve the Clean Room platform. Your team will: Collaboratively develop cutting-edge solutions to improve More ❯

vehicles, using its central role in the Fintech ecosystem to identify and back revolutionary new businesses. The role Our Tech Team at Fasanara is looking to bring onboard a senior Full-Stack Engineer who will be essential in expanding the capabilities across our investment tools, working on several Greenfield projects. You'll have the opportunity to partner across … multiple business areas building scalable innovative solutions. This role would suit an ambitious, seasoned engineer who wants to be part of an expanding engineering team having a big impact. Responsibilities Design and develop scalable, high-performance internal platforms and applications for core business functions including Credit Trading, FX Hedging, Portfolio Monitoring, and Treasury. Collaborate cross-functionally with investment, operations … and data teams to translate complex business workflows into efficient, maintainable software solutions. Drive the full software development lifecycle - from technical design and implementation to testing, deployment, and production monitoring. Contribute across the stack, including backend services, frontend interfaces, and data engineering pipelines as needed. Provide technical leadership and mentorship to more junior team members, fostering a culture More ❯

Senior Software Engineer- Energy & Resources Analytics Platform London, United Kingdom req2463 Posted on: 28/05/2025 - Application Deadline: - About Baringa: We aim to build the world's most trusted consulting firm, creating lasting impact for clients and pioneering a positive, people-first culture. We collaborate with a diverse range of clients from FTSE 100 companies … Our global hubs are located in Europe, the US, Asia, and Australia, working worldwide to tackle challenges and make an impact. Our Market, Advisory, and Analytics practice seeks experienced Senior Platform Software Engineers to join our team. We are leaders in modelling energy markets, providing insights to drive change in a decarbonising industry. Our work involves varied modelling … analytics outputs via GUIs, APIs, and other systems, with confidence in compliance and governance. To support our growth, we are building a dedicated global Platform team. We seek experienced software engineers to help architect, implement, and support tools fundamental to Baringa's success. This team values curiosity, problem-solving, and the flexibility to adopt suitable technologies. The next-generation More ❯

backs. If you're ready to see your impact and unlock incredible career growth opportunities, join us, and build real world value. THE WORK: We are looking for a Senior Software Engineer passionate about solving ambitious problems and working directly with Ripple Trading and Markets in the cross-border payments space. We are passionate about the growth … partners. Continuing to support and complement Ripple's Payments, Custody and Stablecoin business units WHAT YOU'LL DO: Be an ambitious builder, working up and down the stack, mixing software engineering, data engineering, and distributed systems knowledge to build modern enterprise payment applications. Build reliable, high-throughput, low-latency microservices to power a diverse range of trading use cases … Engage in the complete software development lifecycle by collecting requirements, showcasing solid software design principles, and maintaining operational excellence through unit and integration testing Be a true owner, managing and supporting Trading Engineering applications throughout product lifecycle Work with teams across the organisation, including product, legal, and business development to think beyond the technical implications of your design More ❯

Senior Software Engineer/Developer (Full Stack JavaScript) London to £100k Opportunity to progress your career in a senior, hands-on Software Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets … established 10 years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Software Engineer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and … understanding of web development practices, tools and technologies You enjoy learning and picking up new things You're flexible and able to adapt to changing priorities You have full software development lifecycle experience including CI/CD and testing You're collaborative with Agile team experience, happy to mentor more junior developers You're likely to be degree educated More ❯

transaction services, to make mobility ecological, efficient and convenient. Are you adaptable, flexible and pragmatic with a DevOps mindset? Are you able to apply good engineering processes to deliver software products of high quality and performance, even with occasionally ambiguous requirements? The ideal candidate will be a lifelong learner who enjoys solving technical problems, is curious about new technologies … local, pre-release and production environments running on AWS. We operate a DevOps culture and are responsible for developing, deploying, operating and monitoring our team's deliverables. As the senior engineer in the team, you will set the technical standard for the team; offering mentoring and support to your team-mates. Requirements Highly skilled and proficient coding in … direction to your team and contributing to the wider engineering organisation. Deep technical understanding of MySQL and relational databases, particularly database performance tuning. Knowledge of best practises around Modern Software Engineering, CI/CD, DORA metrics. Experience of troubleshooting and fixing performance issues in a full-stack application; from browser to the database. Experience of software architecture and More ❯

and AI-driven support across voice, mobile, and web platforms. It's a product that demands reliability, speed, and clarity - in the moments when it matters most. As a Senior Software Engineer I , you'll play a central role in building the backend systems that bring Axon Assistant to life. You'll work across real-time APIs … design, performance, and shipping features that support real people doing critical work. And you bring enough experience to know when to challenge, when to align, and how to build software that lasts. What You'll Do Design and build scalable, fault-tolerant backend services that support real-time AI experiences across Axon devices, mobile apps, and web interfaces. Collaborate … strong engineering culture built on trust, ownership, and execution. What You Bring Required Skills Bachelor's degree in Computer Science, Engineering, or a related field. 6+ years of professional software development experience, ideally in backend or platform teams. Strong proficiency in backend service development in Node.js , Python , Go , or similar languages. Experience designing and operating cloud-native systems (AWS More ❯

consumer experiences, enabling business growth, and advancing operational excellence. Team Description: The Product & Engineering team within Workforce Technology focuses on integrations between various HCM systems. The team comprises of software engineers dedicated to building solutions that help automate HR processes, improve end user experience and improve data integrity between various HR systems that drive payroll processing, benefit enrollments, time … Own comprehensive technical documentation of integrations and other applications for document versions and archives Must Haves (Years of Experience, languages, programs, tools, etc.): Minimum 5 years of experience developing software applications Minimum 5 years hands-on experience configuring systems Minimum 5 years of experience with some of the following specific technologies: OData, REST, SOAP, FTP/SFTP, JDBC, CSV … Expertise in comprehensive testing lifecycle inclusive of Unit Testing, User Acceptance Testing, Regression Testing, and Defect Remediation. Comfortable with Agile and Waterfall development lifecycles for project deliveries Experience with software development lifecycle methodologies such as Scrum, Kanban, etc. Expertise in secure software development and secure coding practices Ability to translate business requirements into software technical specifications Act More ❯

SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW PERMANENT JOB OPPORTUNITY AVAILABLE WITHIN A GLOBALLY LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Permanent job opportunity for a Senior Software Engineer Globally leading defence/cyber security company Salary up to £100,000 plus clearance bonus London based organisation … in an easily accessible location Permanent Software Engineer To apply please call 07704 152 640/0203 854 0120 or email WHO WE ARE? We are recruiting Senior and Lead Software Engineers to work with a multi-national, industry leading National Security client in central London. Due to the nature of the work you must hold … enhanced DV Security Clearance. WHAT WILL THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver packages of bespoke work, work development teams and liaise with customers. You will work through the entire software development life cycle from requirements capture More ❯

CONTRACT SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW CONTRACT JOB OPPORTUNITY AVAILABLE WITHIN A LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Contract job opportunity for a Senior Software Engineer Globally leading defence/cyber security company £500 - £750 per day (inside and outside IR35 roles available) London … based organisation in an easily accessible location Contract Senior Software Engineer To apply please call or email (see below) WHO WE ARE? We are recruiting multiple contract Senior Software Engineers to work with various clients in London ranging from R&D companies, Multi-National Consultancies to SME's and product based companies. Due to the … nature of the work these clients do, you must hold enhanced DV Security Clearance. WHAT WILL THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver packages of bespoke work, work development teams and liaise with customers. You will work through More ❯

Senior Full Stack Software Engineer Tech : AWS Lambda, React with Next.js, TypeScript, Node.js, and Terraform Why? start-up financial services, revolutionising the industry Location : Hybrid - 2-3 days in the office (London) Salary : £80k - £95k + benefits Our Client A new UK-based financial services provider is launching a credit card offering aimed at delivering fair, flexible … and user-friendly financial products to consumers. The organisation is committed to empowering individuals by enhancing their understanding and control of personal finance through clarity, intelligence, and technology. Senior Full Stack Software Engineer - Responsibilities Collaborate with Product Owners to ensure that the technical roadmap aligns with the product vision. Actively participate in product planning meetings and provide … Terraform. Provide technical guidance and mentorship to junior developers. Stay up-to-date with new technology trends, applications, and protocols. Contribute to the development of technical documentation and standards. Senior Full Stack Software Engineer - Experience Required Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field, or equivalent experience Proven experience as a More ❯

Casualty (North American Specialist Lines, Financial Lines, International Casualty, UK Liability Insurance), Property (Direct, Facultative, and Treaty), Accident & Health, Agriculture, and Energy. We are offering an opportunity for a Senior Software Engineer . Context of the Role: We seek a highly skilled Senior Software Engineer with expertise in building scalable, high-performance solutions on … for the Microsoft stack. Key Responsibilities Design, develop, test, support, and deploy custom web and mobile applications based on .NET (Blazor, C#), C++. Gather customer requirements and develop related software applications. Collaborate with architects, engineers, and team members to design scalable solutions. Implement Azure Cloud Services to enhance performance and reliability. Research and evaluate new software technologies and … testing and maintenance procedures. Develop high-quality coding standards. Required Skills & Experience: University degree in Computer Science, Information Systems, or related field, or equivalent work experience. Proven experience in software development with C# in the .NET environment, including ASP.NET Core and Entity Framework Core. Experience with iterative methodologies like Scrum or Design Thinking, using Azure DevOps and Git. Experience More ❯

Senior Software Engineer I page is loaded Senior Software Engineer I Apply locations London time type Full time posted on Posted Yesterday job requisition id R7649 Company Description We're - you might not know our name, but companies like eBay, ASOS, Klarna, Uber Eats, and Sony do. That moment when you check out online … and our partners. And we need your help. Join us to build the digital economy of tomorrow. Job Description Global payments are complex and ever-evolving. At Checkout our software engineers develop the next-generation payments technologies that enable our Merchants to boost their acceptance rates, cut processing costs, fight fraud, and create cutting edge technology that enables extraordinary … customer experiences. We're looking for Senior Software engineers who bring fresh ideas, have a curious nature and are passionate about working in an Engineering environment which focuses on building products to achieve the company's strategic goals. You'll get to work with teams from across 's portfolio of products and services who all have a real More ❯

Download our latest report - Protecting & growing your payments business - At Thredd, we are seeking a highly skilled Senior Software Engineer with expertise in C# and Python to join our dynamic team in the fintech sector. The ideal candidate will be responsible for developing and delivering innovative issuer processing solutions using cloud-based technology. This role involves working … and deploy applications that meet the needs of the card issuing market. Collaborate with Product Managers, UX/UI Designers, Solutions Architects, and other Engineers to define requirements, create software architecture, and deliver high-quality solutions. Implement automated testing and deployment strategies to ensure reliability and efficiency in the software delivery process. Optimize applications for maximum speed, scalability … of emerging trends and technologies in cloud computing and issuer processing to drive continuous innovation and improvement. Provide technical leadership and mentorship to junior engineers, promoting best practices in software development. Troubleshoot, debug, and upgrade existing systems, ensuring high performance and responsiveness to requests. Participate in code reviews, contributing to the maintenance of high coding standards and improving the More ❯

Our software, ToffeeX, is an engineering design tool that automatically creates mechanical components for the engineering industry. It leverages a combination of artificial intelligence, numerical simulation, and sophisticated mathematical optimization techniques to design components that outperform their existing counterparts. By bringing numerical simulation to the cloud, we create immense opportunities for the design engineer. At ToffeeX we are at … to industry through our cloud platform. Utilising a microservice architecture we continue to integrate and deploy mathematical optimisation modules, machine learning solutions and geometric manipulation algorithms through our flexible software pipeline. Working closely with our clients, some of the biggest players in their industries, we revolutionise the user experience and automation in engineering software. At the same time, we … design our architecture to industry leading reliability and security standards, essential to highly sensitive projects. The position: At ToffeeX, you will join a passionate team of software engineers, scientists, and academics. You will design high performing software solutions for cutting edge applications that range from supersonic aircraft to microprocessors and from Formula 1 cars to coffee pots! You More ❯

tangible impact on our world. Whether you join our London HQ or the wider global organisation, you'll be a part of collaborative, high-performing teams, creating cutting-edge software, platforms, and infrastructure. The Role Our Product Development organization is made up of small teams of engineers who work collaboratively to build cross functional capabilities, streamline user workflows and … continuously improve our software's efficiency and reliability. We are seeking a highly motivated and experienced Backend Engineer to join our growing team. As a Backend Engineer, you will play a critical role in designing, building, and maintaining a wide range of platform and application-level services for end users across myriad sectors. Required skills/expertise More ❯

large international organisations Hands-on technology development and implementation experience Experience in agile development environments with all aspects of SDLC with globally distributed teams Ability to lead/perform software development, as well as make architectural recommendations pertinent to business needs and related dependencies Good understanding of security best practices from a development and deployment perspective Strong technical competence … exposure to Mulesoft/Kong is a plus - On-premise/cloud-based infrastructures, SDLC pipelines, and deployments/configurations and definition/evangelism of best practices/standards - Software delivery, including CI/CD and related DevSecOps practices, working with cloud-based platforms such as Azure or AWS (preferred) - Experience working on AI/Gen AI implementations and More ❯

Our client, a fast-growing FinTech organisation delivering innovative digital financial solutions, is seeking a highly experienced Senior Software Engineer. This is a unique opportunity to join their dynamic tech team as they prepare to launch a brand-new mobile app in September 2025. The successful candidate will spearhead Python development, becoming the first permanent Python specialist within … collaborative team of Developers, Data Engineers, and Technology Experts. With a CEO who is a strong advocate of AI, experience and passion for AI technologies and their application in software development will be highly valued. Main Purpose of the Role:Lead and champion Python development within the organisation.Drive technical innovation across mobile app projects, backend development, and AI-driven … solutions.Collaborate closely with a multi-disciplinary technology team to deliver scalable, robust solutions. Key Responsibilities:Design, develop, and maintain high-quality software solutions using Python.Contribute to mobile app development, ensuring seamless integration with backend systems.Build and maintain CI/CD pipelines for efficient and secure deployments.Develop solutions on AWS cloud infrastructure, ensuring performance, security, and scalability.Support and contribute to More ❯

Our client, a fast-growing FinTech organisation delivering innovative digital financial solutions, is seeking a highly experienced Senior Software Engineer. This is a unique opportunity to join their dynamic tech team as they prepare to launch a brand-new mobile app in September 2025. The successful candidate will spearhead Python development, becoming the first permanent Python specialist within … collaborative team of Developers, Data Engineers, and Technology Experts. With a CEO who is a strong advocate of AI, experience and passion for AI technologies and their application in software development will be highly valued. Main Purpose of the Role: Lead and champion Python development within the organisation. Drive technical innovation across mobile app projects, backend development, and AI … driven solutions. Collaborate closely with a multi-disciplinary technology team to deliver scalable, robust solutions. Key Responsibilities: Design, develop, and maintain high-quality software solutions using Python. Contribute to mobile app development, ensuring seamless integration with backend systems. Build and maintain CI/CD pipelines for efficient and secure deployments. Develop solutions on AWS cloud infrastructure, ensuring performance, security More ❯

Role: Senior Software Engineer (Python) Salary: £100,000-£110,000 + Bonus WFH: Hybrid - 2-3 days/week in-office (Central London) Overview Our client is a profitable and fast-growing UK fintech helping over 800,000 customers improve their financial health. Backed by strong leadership and AI-driven innovation, the company is building a brand … new mobile app and scaling its engineering team to support rapid product delivery. They're now hiring a Senior Python Engineer to join this lean, high-impact team and help shape the future of fair, tech-driven credit products. Key Responsibilities Design, build and scale modern APIs and backend services in Python Lead technical delivery across greenfield and … Write maintainable, testable, high-performance code Influence architecture and mentor junior engineers Balance delivery with strategic thinking in a fast-moving environment Ideal Candidate 7+ years of experience in software engineering Strong Python (FastAPI, Flask, or Django preferred) AWS or Azure cloud exposure Frontend awareness (e.g. React) Agile mindset; thrives in lean, delivery-focused teams Passionate about AI and More ❯

Senior Software Engineer - Backend page is loaded Senior Software Engineer - Backend Apply locations London, South Bank Central time type Full time posted on Posted 2 Days Ago time left to apply End Date: July 31, 2025 (24 days left to apply) job requisition id R095628 We're the world's leading data, insights, and … s Profiles Audience Network delivers the most meaningful data with consistency, accuracy, and accountability - all at speed and scale. Job Details We are looking for a talented and experienced Senior Software Engineer to join our team. In this role, you will work across our internal platform to build scalable and robust micro services. You will collaborate closely More ❯

Senior Full Stack Software Engineer - FX Pricing (React, Typescript, Java, API) - London (VP) Overview Citi is a world-leading global bank. We have approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. We provide consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer … strategic financial objectives by providing them with cutting-edge ideas, best-in-class products and solutions, and unparalleled access to capital and liquidity. The role We are seeking a Senior Applications Developer to join a successful team delivering pricing projects for the Foreign Exchange (FX) Business. The role involves all aspects of the software development life cycle: analysis … design and implementation. We need a flexible and practical technologist who demonstrates excellent problem solving skills enjoys all aspects of software development and will contribute to the success of the team. Your deep knowledge of design, analytics, development, coding, testing and application programming will help your team raise their game, meeting your standards, as well as satisfying both business More ❯

that matters-it's how we do it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus. We are looking to hire a Senior Software Engineer into the Pricing and Derived Data team. We are responsible for building foundational APIs and data services to price all products and related products that … allowing our users to, for example, ensure responsible allocation of capital across the firm. Our systems are used across the organisation by Trading Desk leads, Global Risk Management, and Senior Leadership. We collect, transform, aggregate and disseminate pricing and related derived data, such as: Commodity Price and Yield Curves - Mark-to-market, and Mark-to-model settlement prices Option … DV01s and BPVs. Proprietary pricing models in collaboration with analysts and Risk Management. While previous experience in the trading and finance industry is beneficial, we're looking for talented software engineers with or without industry-specific expertise. The Pricing and Derived Data team has embraced the BEAM in building the core of our real-time pricing, analytic and reporting More ❯

to own their story and their successes - all our team members are highly valued and important members of our company's journey. Job brief We are looking for a Senior Django Developer who is extremely knowledgeable and a driven individual, you will be a Senior Engineer within a team designing and programming Django-based web applications. You … will be a part of a cross-functional product team that is responsible for the full web application development life cycle, producing scalable software solutions from conception to deployment. As a Python Django Developer you will need to be analytical, and comfortable with a mix of web technologies, development frameworks and third-party libraries. If you have great attention … like to meet you. As well as producing code, you will lead the design and implementation of technical solutions working alongside a product manager, and close to the lead engineer, helping the delivery of production-ready projects by helping fellow developers and QA engineersimplement the right solutions. As Edgefolio expands, you will help build modern and elegant applications that More ❯

contribution to disrupting an industry as we know it About The Role "Hello! I'm Nicolas, Chief Product Officer at Next Gate Tech. We're looking for a passionate Senior Software Engineer with a builder's mindset to join our team. In this role, you'll lead the design and delivery of scalable software solutions, taking … of technical debt for owned systems with strategic project execution Qualifications Bachelor's or Master's degree in Computer Science, Engineering, or a related field 5+ years of professional software engineering experience Proficient in backend technologies including Python, with a deep understanding of software architecture and design principles, ability to evaluate different approaches to balance performance, cost, and More ❯