Senior Software Engineer (C# / .NET) - Team Lead

Caxton seeks a Senior Software Engineer (C# / .NET) to lead a team of developers in London. This role blends hands-on engineering with team leadership, focusing on delivering reliable software using C# and .NET. Key responsibilities Mentor and guide a group of software developers Shape technical decisions and encourage strong team collaboration Maintain high standards of software quality and reliability Take part in designing and implementing new solutions Location This position is based in London, England, United Kingdom.

Join our dynamic global team as a Software Engineer where you will play a crucial role in enhancing the quality, development, and delivery of our software solutions.As part of a multidisciplinary technology department, you will collaborate with experts from various locations including Barcelona, New York, London, Manchester, Bucharest, and India. If you're eager to make a significant impact in a rapidly growing company, we would love to hear from you!About TransPerfect - TechOps:The TransPerfect TechOps team has been instrumental in our success for over a decade, providing technology and services that significantly enhance the efficiency of our clients and colleagues. From streamlining workflows to developing core services on our GlobalLink platform, we create user-friendly client interfaces that simplify complex systems.

Join our innovative global team as a Software Engineer at TransPerfect, where you'll play a pivotal role in ensuring the quality, development, and deployment of our software solutions.As part of our dynamic technology department, you will collaborate with a diverse group of professionals located worldwide, from Barcelona to New York, London, Manchester, Bucharest, and India. If you're eager to contribute to a rapidly growing company and make a significant impact, we want to connect with you!About TransPerfect TechOps:With over a decade of experience, the TransPerfect TechOps team has been instrumental in the company’s success, delivering innovative technology and services that enhance the experience of our clients and colleagues alike. Our contributions range from streamlining workflows for employees to developing the essential services that underpin our GlobalLink platform, as well as creating scalable client interfaces that simplify complex systems for novice users.

Hybrid Working EnvironmentAt ASOS, we value collaboration and innovation, which is why we work in-office at least two days a week. This approach allows us to learn faster, foster a strong culture, and enhance teamwork.ASOS is committed to empowering everyone to be their best selves because when you are at your best, you can achieve extraordinary things. Our Technology team is dedicated to pioneering innovative solutions that transform how millions of customers experience fashion. We believe that fashion has the power to make you feel confident, and we want all ASOSers to embody that feeling of empowerment.We celebrate diversity and welcome individuals from all walks of life, reflecting the vibrant society we are part of. We seek candidates who resonate with our core values: Authenticity, Courage, Creativity, and Discipline. We embrace individuality and recognize that there are countless ways to express 'you.'Are you excited about designing and developing systems that manage ASOS' payment processing? Our Payments Platform Team handles intricate integrations with numerous payment providers. Here, you'll dive deep into understanding the comprehensive payments lifecycle.We process thousands of transactions per minute with precision and security.Our commitment to using cutting-edge technology and best practices means you will receive ongoing security training and have the chance to tackle performance challenges at scale.If you are looking for a stimulating environment that encourages experimentation and continuous learning, ASOS is the place for you!We take great pride in our industry-leading microservices architecture, and we are on the lookout for passionate and talented Engineers to contribute to the exceptional software that makes ASOS stand out!With 30 engineering platforms operating at hyper-scale and handling thousands of requests per second, you will collaborate within strong cross-functional Agile teams to drive quality and technology, sharing your skills and experience along the way. From innovative problem-solving to conceptual development, you will have the opportunity to unleash your full potential and creativity on various ASOS software projects.

Job Description:We are seeking an accomplished C# and .NET Developer to join our dynamic team. The ideal candidate will possess a deep understanding of C# and the .NET framework, demonstrating proficiency in developing robust applications and solutions.Mode of Interview: Telephonic & Face to Face.

At Ripple, we are pioneering a future where value transfers seamlessly, akin to the flow of information today. Our groundbreaking crypto solutions are transforming the financial landscape for institutions, businesses, government entities, and developers, fostering a more equitable global economy. Join us to thrive in an environment that champions your professional growth, surrounded by supportive colleagues.Are you ready to make a significant impact and unlock exciting career advancement opportunities? Come aboard and help us create real-world value.THE WORKRippleX is committed to empowering tomorrow's innovators on the XRP Ledger (XRPL), one of the fastest and most reliable public blockchains globally. We aim to democratize the digital economy by providing hands-on support, nurturing a community of developers, and leveraging our expertise as a forward-thinking technology firm.The XRPL is a decentralized public blockchain operated by a global network of businesses and developers dedicated to addressing challenges and generating value. With over a decade of proven reliability and more than 90 million ledgers closed, the XRPL boasts streamlined development, low transaction costs, exceptional performance, and sustainability. We seek senior engineering talent to uphold our high technical standards while crafting innovative solutions to meet the growing demands of the digital economy.WHAT YOU'LL DOEnhance the capabilities, performance, scalability, and reliability of the XRP Ledger.Engage in the complete software development lifecycle, encompassing architecture, technical design, C++ development, bug resolution, and functional as well as performance validations.Contribute to the open-source XRP Ledger community, establishing rigorous standards for coding, testing, and deployment.Actively participate in code reviews to uphold the quality of our codebase.WHAT YOU'LL BRINGA Bachelor’s degree in Computer Science or a similar discipline, along with 5+ years of substantial hands-on experience in software product development utilizing C++.Proficiency in backend distributed systems development.A strong enthusiasm for blockchain technology and its potential advantages.The capability to swiftly learn new technologies and programming languages.Exceptional problem-solving skills, with the ability to devise creative solutions independently.Preferred: Experience in developing and contributing to open-source software.

At Ripple, we are pioneering a future where value transfers seamlessly, akin to how information flows today. Our mission is ambitious and transformative, already making strides through our innovative crypto solutions tailored for financial institutions, enterprises, governments, and developers. We aim to enhance the global financial landscape, fostering economic equality and opportunities for individuals across diverse regions worldwide. Here, you will be empowered to perform your best work and expand your skill set, supported by a collaborative team.If you are eager to witness your contributions make a real-world impact and explore remarkable career advancement prospects, we invite you to join us in creating tangible value.The TeamRippleX is committed to equipping the innovators of the future on the XRP Ledger (XRPL), renowned as one of the fastest and most dependable public blockchains globally. Our goal is to democratize the digital economy through practical support, empowering a vibrant developer community, and leveraging the expertise of a forward-thinking technology organization.The Programmability team plays a crucial role in this vision, dedicated to enhancing the core functionalities of the XRP Ledger to accommodate smart contracts and more sophisticated on-ledger capabilities. We are on the lookout for skilled engineers who are passionate about shaping the future of decentralized applications.Your ResponsibilitiesDesign, develop, and maintain foundational components of the XRP Ledger to boost programmability, smart contract functionalities, performance, and scalability.Lead the integration and upkeep of a WebAssembly (WASM) virtual machine within the XRPL’s C++ core.Participate in the complete software development lifecycle, encompassing architecture and design to development using modern C++ and Rust, alongside rigorous testing.Produce system design documentation and spearhead technical conversations with both internal and external engineering stakeholders.Maintain high coding and testing standards as a champion of the open-source XRP ledger community, including engaging in code reviews.

Join Zopa as a Senior Software Engineer specializing in C#. In this role, you will leverage your technical expertise to build innovative solutions that enhance our digital offerings. Collaborate with cross-functional teams to design and implement scalable software applications, while maintaining a focus on performance and security.

Role overview Alten Ltd. is seeking a Senior C++ Software Engineer based in London. This role centers on developing, designing, and maintaining software for projects in the Defense and Naval sector. The position requires a strong focus on high-quality, efficient software solutions that meet rigorous standards. What you will do Design and implement software in C++ for Defense and Naval applications Maintain and enhance existing codebases to support reliability and performance Work closely with multidisciplinary engineering teams to deliver solutions that align with client needs Requirements Extensive experience in C++ development Background in software engineering, with preference for experience in Defense or Naval projects Strong ability to collaborate and contribute within a team environment

Join CUBE, a pioneering global RegTech firm that sets the benchmark for regulatory intelligence in the financial services sector. Our innovative SaaS solutions, driven by advanced AI technology, simplify the complexities of compliance for our clients.Why Choose CUBE? CUBE is a globally recognized leader in Regulatory Technology, with our top-tier SaaS offerings trusted by leading financial institutions worldwide. In 2024, CUBE experienced remarkable growth exceeding 50%, fueled by organic expansion and strategic acquisitions. We thrive in a fast-paced, high-performance environment, continually pushing the limits of our products, services, and operations. At CUBE, we don’t just adapt; we lead. Our future is shaped by bold, ambitious individuals eager to make a meaningful impact. Our “make it happen” culture empowers you to take charge of your career and fast-track your personal and professional growth from day one. With over 700 employees in 19 countries across EMEA, the Americas, and APAC, we operate as a cohesive unit with a shared mission to revolutionize regulatory compliance. Diversity, collaboration, and purpose are at the core of our success. We were among the pioneers in leveraging AI for regulatory intelligence and continue to set the standard with our state-of-the-art technology. At CUBE, you will collaborate with some of the brightest minds in AI research and engineering to develop impactful solutions that are transforming the regulatory compliance landscape.Role Overview:As the Lead Software Engineer, you will guide a delivery squad in building and operating C#/.NET web services, Angular front-end applications, and event-driven services on Azure Kubernetes Service (AKS). You will set the technical vision for the squad while managing engineers, engaging hands-on with complex tasks, and ensuring reliable, secure, and sustainable delivery. You will also champion the integration of AI-assisted development tools to enhance engineering productivity and elevate the quality of our deliverables.Purpose:This position is crucial for transforming architectural vision into scalable, high-quality software through strong technical leadership and disciplined execution. It ensures that the squad achieves a balance between delivery speed and long-term maintainability by embedding ownership, engineering standards, and contemporary development practices.

Join our dynamic team at asos as a Senior Software Engineer specializing in Azure and C#. In this pivotal role, you'll be responsible for designing, developing, and deploying innovative software solutions that enhance our e-commerce platform. You'll collaborate with cross-functional teams to ensure the delivery of high-quality software that meets our business objectives and customer needs.

Join Anaplan, a team of forward-thinkers dedicated to enhancing business decision-making through our advanced AI-driven scenario planning and analysis platform. Our mission is to empower customers to stay ahead of their competition and thrive in the market.At Anaplan, we pride ourselves on our Winning Culture, which unites our diverse teams across various geographies in their commitment to customer success.Our clientele includes industry giants like Coca-Cola, LinkedIn, Adobe, LVMH, and Bayer, among over 2,400 global companies that trust our exceptional platform.Our Winning Culture drives innovation, celebrates diversity of thought, and fosters a community where everyone can lead, achieve ambitious goals, and celebrate victories – both big and small.Guided by our principles of being strategy-led, values-based, and disciplined in execution, you will find inspiration, connection, development, and rewards at Anaplan. We welcome all that makes you unique; let’s create the future together! As a pivotal member of our R&D team, you will contribute to the evolution of our calculation engine, the core of our platform, which powers real-time business planning for the largest enterprises worldwide. We seek an experienced software engineer to tackle complex challenges in high-performance distributed computing and shape the future of our product.

Join Spotify as a Senior Software Engineer specializing in TV Playback with C++. In this role, you will be integral to enhancing our streaming technology, helping to deliver an exceptional user experience across a variety of devices. Your expertise will guide the development of innovative playback features, working alongside a dynamic team of engineers and product managers.

About Man GroupMan Group is a leading global alternative investment management firm dedicated to delivering exceptional performance for our sophisticated clients through our Systematic, Discretionary, and Solutions offerings. With a strong emphasis on talent and cutting-edge technology, our investment strategies, both single and multi-manager, are driven by comprehensive research and encompass public and private markets across all major asset classes, particularly in alternatives. We pride ourselves on building deep, collaborative partnerships with our clients and crafting bespoke solutions that align with their investment ambitions and the futures of the retirees and savers they support.Headquartered in London, we manage assets totaling $227.6 billion* and maintain a presence in various global offices. Man Group plc is publicly traded on the London Stock Exchange under the ticker EMG.LN and is a member of the FTSE 250 Index. For more information, please visit www.man.com.* As at 31 December 2025The TeamThis is an extraordinary opportunity to become part of one of the largest alternative asset managers. Technology is integral to Man's strategic direction, and we continually adapt to remain at the forefront of the industry. Our culture fosters innovation and change, with engineering being pivotal to our operational framework.We are looking for skilled Software Engineers with extensive experience in C# and .NET to spearhead the design and development of mission-critical systems within our domain. You will be instrumental in shaping the technical strategy and influencing architectural choices within a high-performing team. A passion for utilizing AI development tools to enhance delivery and promote their adoption within the team is essential.This role provides an excellent opportunity to collaborate and learn alongside highly talented engineers while acquiring essential knowledge in financial systems and order management. New team members will engage with the latest technologies to tackle upcoming challenges.

Join Decisal, where we craft innovative software solutions that empower airlines worldwide to optimize their planning and scheduling processes. As we expand our product offerings, we're on the lookout for a dedicated and talented C++ Software Engineer to become a pivotal member of our vibrant team.In this role, you will be instrumental in designing and developing state-of-the-art software applications. You will engage with clients to implement new features and refine existing systems, enabling you to work on projects that significantly influence our customers and the aviation industry.We pride ourselves on fostering a collaborative and innovative work culture that values your creativity and recognizes your contributions. Decisal Ltd is dedicated to providing a nurturing and inclusive workplace that encourages both personal and professional growth.If you are a driven individual with a solid foundation in C++ programming and a passion for delivering high-quality software solutions, we invite you to apply!

About Us:Smarkets: Shaping the Future of BettingSmarkets operates one of the globe's most advanced prediction markets, processing over £29 billion in transactions since 2010 and connecting over 200,000 traders worldwide. As a technology-driven enterprise, we are transforming the betting landscape—spanning sports, political markets, and delivering the most competitive prices and fair odds.Our technology stack is engineered for scalability, reliability, and speed, featuring Linux, Kafka, Postgres, and Kubernetes, with Python 3, C++17, and React powering our platform. We develop infrastructure that institutions depend on while ensuring trading remains accessible to all. Our unique advantage lies in our resilience through market fluctuations, competition, and industry transformations.At the core of our success are our talented individuals. We foster a high-performance culture where exceptional talent flourishes, combining extensive business insight with a commercial outlook to drive strategic expansion.If you are eager to influence the future of prediction markets with state-of-the-art technology and a customer-centric approach, Smarkets is the right place for you.Role Overview:As the Engineering Team Lead, you will spearhead a team of software engineers responsible for building, managing, and maintaining the microservices that power Smarkets' innovative products.Your role will involve steering the team's direction, nurturing their professional development, and ensuring we are constructing the optimal stack to drive our product's future. You will leverage your team's capabilities to ensure our services remain responsive, scalable, and high-performing.You will collaborate closely with your engineering team, fellow engineering managers, technical leaders, and product managers to propel the intricate technical projects that advance the Smarkets product roadmap.

Alten is looking for a Senior Embedded C++ Engineer based in London. This position centers on designing, developing, and optimizing embedded software for a range of industry projects. Role overview This role involves working closely with cross-functional teams to build reliable embedded software. The focus is on delivering solutions that meet strict functional and performance standards. What you will do Design and implement embedded C++ software for diverse applications Optimize code for efficiency and reliability Collaborate with colleagues across engineering and product teams Ensure software meets both functional and performance requirements Location This position is based in London.

Role Overview We are seeking a highly skilled C# Software Engineering Manager to lead a dynamic, product-focused engineering team. This role involves close collaboration with a Product Owner, business stakeholders, and third-party partners. The successful candidate will play a pivotal role in IT Development, overseeing team leadership, solution delivery, and providing technical direction, especially within finance and operations systems. We are looking for a leader who is technically proficient, passionate about mentoring engineers, and eager to actively engage with a Microsoft technology stack.Key Responsibilities Guide a team of software engineers within the Finance Automation team (Automation and Insights) product squad. Own the technical delivery across both internal development and third-party collaborations, ensuring high quality, timeliness, and alignment with business objectives. Work closely with business stakeholders across Finance, IT, and Operations to ensure cohesive project execution. Uphold high standards in software design, development, testing, and deployment, with a focus on security, resilience, and supportability. Engage in technical decision-making, architecture discussions, and implementation strategies. Promote continuous improvement in engineering practices, including DevOps methodologies, agile delivery, and release management.

Join Version 1 as a Senior .NET Developer and take your career to the next level. We are seeking a highly skilled and experienced developer to work on exciting projects that drive innovation and excellence.In this role, you will be responsible for designing, developing, and maintaining high-quality software applications using the .NET framework. You will collaborate with cross-functional teams to define and implement solutions that meet business requirements.

Join MARGO in the UK (London)MARGO is a technology-driven consultancy providing top-tier IT solutions to the financial services sector. Our focus is on sophisticated software engineering, emphasizing performance, reliability, and scalability. Our expertise lies in real-time systems, low-latency architectures, and extensive data processing capabilities.By becoming a part of MARGO, you will engage in challenging Front Office and Trading IT environments, all while enjoying the benefits of a compact organization that prioritizes personalized support and customized training programs.Business ContextYou will integrate into the FX Risk IT ecosystem of a prestigious tier-1 investment bank. Your team will be responsible for designing and maintaining essential systems that support FX Cash (Forward, Swap, NDF) and FX Derivatives (Options, Carbon Offsets).Our environment is centered around the Orchestrade platform and necessitates close collaboration with traders, quants, and risk managers to create optimal trading solutions.Role OverviewWe are seeking a Senior C# / .NET Developer who possesses a robust technical background to spearhead the development and integration of FX trading solutions. While familiarity with the Orchestrade platform is a significant advantage, we primarily value a skilled engineer capable of mastering complex vendor APIs and providing technical guidance in a dynamic, agile environment.Key ResponsibilitiesDesign & Development- System Evolution: Assess, design, and develop high-performance C# solutions tailored for FX cash and derivative products.- Orchestrade Integration: Create code for the seamless integration of Orchestrade with associated internal systems, including Sigma, Barracuda, and Deal Hub.- Architecture: Consult on optimal architectural strategies for integrating vendor products with service-oriented and microservices frameworks.- Data & Middleware:...