Senior C# React Developer in Investment Banking

Role Overview Talan is looking for a C# Developer in London. This role focuses on building, testing, and maintaining reliable software applications using C#. The position involves hands-on programming and close collaboration with colleagues from different teams. What You Will Do Develop and maintain software applications in C# Test new features and ensure software quality Work with cross-functional teams to gather requirements and design architecture Help implement systems that align with business goals Location This position is based in London.

Talan is looking for a Python Developer to join its London office. This position centers on building and maintaining applications for a variety of client projects. The work includes both new software development and ongoing support, with a strong emphasis on delivering solutions that meet business needs. Key responsibilities Design, develop, and maintain Python-based applications Collaborate with colleagues across different teams to achieve project objectives Take part in planning and implementing technical solutions Support existing systems and address issues as they come up Role overview This role involves hands-on development as well as troubleshooting and supporting live systems. Working in a collaborative environment, the Python Developer will contribute to projects that serve a diverse group of clients.

Join Talan, a leading consulting firm, as a KDB Developer. In this exciting role, you will leverage your expertise in KDB/Q to develop innovative solutions that meet our clients' needs. As part of our dynamic consulting team, you will be involved in high-impact projects that shape the future of finance and technology.

Join our dynamic team as a Senior C# / Orchestrade Developer at Talan, where your expertise will help shape innovative financial solutions. In this role, you will be at the forefront of developing and enhancing our Orchestrade platform, ensuring high performance and scalability.Your responsibilities will include collaborating closely with cross-functional teams, providing technical leadership, and driving the implementation of best practices in software development. Bring your passion for coding and problem-solving to a vibrant workplace that values creativity and collaboration.

Role overview LMAX seeks a C++ and Python Developer to join its Middle-Office Team in London. This group works alongside infrastructure, research, and treasury teams to advance trade reconciliation, back-testing frameworks, and trading monitoring systems. The main focus lies in data engineering and building trading systems from the ground up. Prior experience in finance or trading is not required for this position. Team approach The team operates at the intersection of C++ and Python. C++ powers the infrastructure, while Python supports research tasks like analysis and automation. Bridging these languages is central to the role, supporting integration and collaboration across disciplines. Performance and optimization Managing financial data introduces technical challenges, particularly around throughput. The team values software performance but never at the expense of maintainability. Developers work closely with the codebase to understand, optimize, and refine systems. Testing practices Comprehensive testing is a core part of the workflow. The team maintains test suites that include unit tests and full end-to-end simulations. Continuous integration runs these tests every 15 minutes, ensuring rapid feedback and no overnight waits for results. What you will do Write clear, well-structured, and thoroughly tested code in C++ and Python Develop software solutions that handle high throughput Pair program to share knowledge and prevent silos Design and implement features to enhance safety, performance, and usability Create interface code connecting C++ and Python using pybind Requirements Strong C++ skills, especially with modern C++ on Linux or UNIX Python development experience, including Numpy, Pandas, and SQL Experience with automated testing for both C++ and Python Ability to interpret business requirements and build effective systems Skilled at designing simple, well-documented, and maintainable solutions Comfortable working independently with minimal supervision No finance or trading background needed Bonus skills Experience with test-driven development and testing across multiple system levels Location This position is based in London, England, United Kingdom.

Join our innovative team as a C# Developer, where you will design and implement cutting-edge software solutions that drive our projects forward. You will work closely with cross-functional teams to create robust applications, ensuring high performance and responsiveness. If you are passionate about coding and eager to tackle complex challenges, we want to hear from you!

About WintermuteWintermute is a pioneering technology firm and one of the foremost algorithmic trading companies specializing in digital assets. Our mission is to provide liquidity across a diverse range of cryptocurrency exchanges and trading platforms. We also offer comprehensive OTC trading solutions while supporting prominent blockchain initiatives and traditional financial institutions transitioning into the crypto space. Additionally, Wintermute Ventures invests in early-stage DeFi projects, further enhancing our influence in the industry.Founded in 2017, Wintermute has adeptly navigated through various industry cycles. We blend the high-frequency trading standards of traditional markets with the innovative spirit of technology startups. At Wintermute, we are committed to harnessing the disruptive potential of blockchain technology, maintaining a long-term perspective on the digital asset market, and leading the way in establishing a compliant and innovative trading environment. To learn more, please visit our website.Join Our TeamWe are on the lookout for a passionate C++ Quant Developer who thrives on technology and possesses a keen interest in both the intricate details of computer hardware and the overarching design of expansive systems, including data infrastructure. The ideal candidate enjoys exploring the inner workings of technology, has a solid understanding of data structures, and possesses experience in developing client-server network applications and optimizing high-performance code. We value prior experience from personal projects as well as professional backgrounds. A PhD in mathematics is common among our Quant Developers, and a solid grasp of mathematical concepts is essential. An interest in algorithmic and quantitative trading is a bonus.At Wintermute, you will have the unique opportunity to directly influence our trading activities by developing and enhancing various aspects of our trading platform, data infrastructure, and related software. You will receive guidance from seasoned developers and traders, including our founders. Expect immediate responsibility and independence, enabling you to learn at an unparalleled pace! We operate without legacy systems, bureaucratic hurdles, or multiple approval layers; all developers report directly to our hands-on CTO. The impact you make is truly up to you!

Role overview Talan seeks a Director of Business Development to focus on ERP solutions in London. This senior position guides business development strategy and aims to expand the company's presence in the ERP market. Key responsibilities Lead business development activities for ERP solutions Identify and pursue new growth opportunities Develop and sustain strong client relationships Use in-depth ERP expertise to support both client requirements and company objectives Location This role is based in London.

Join Talan as a Front Office e-Trading Developer in London, where you will leverage your expertise to enhance and develop cutting-edge trading solutions. Collaborate with financial experts and utilize innovative technologies to optimize trading processes and improve operational efficiency.

Role overview Talan is hiring a Director of Business Development with a focus on Digital Transformation for its London office. This senior leader will help shape the company’s digital strategy, strengthen digital offerings, and expand market presence. What you will do Lead strategic initiatives that support digital transformation for both clients and Talan’s internal operations. Manage and mentor a team dedicated to business development in digital services. Collaborate with cross-functional teams to coordinate digital projects and deliver effective solutions. Engage with clients to understand their needs and recommend digital strategies tailored to their goals. Identify and pursue new business opportunities that align with digital transformation objectives. Requirements Extensive experience with digital solutions and business development. Demonstrated leadership skills, particularly in guiding teams through periods of change and growth. Strong ability to work across departments and communicate clearly with clients. Clear vision for technology-driven business growth. Location This role is based in London.

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.

Maven Securities is a cutting-edge proprietary trading firm that strategically allocates its internal capital across diverse trading strategies, including discretionary, systematic, and market-making. Our dedicated team comprises skilled traders, engineers, and technologists, all united in our mission to optimize our role as a leading liquidity provider in the global derivatives market. By utilizing innovative execution and pricing technologies, we aim to transform and enhance the operation of financial markets. As a C++ Developer on our trading floor, you will collaborate closely with traders, quantitative researchers, and fellow developers to enhance system connectivity to new markets, refine order execution algorithms, and advance our trading strategies. You will also be involved in the development of automated pricing systems and infrastructure that bolster our options market-making business. Your contributions will directly influence the firm's success and visibility within the industry.

Position Overview Join our dynamic and collaborative team as a Quantitative Developer specializing in C++. In this role, you will be instrumental in developing and maintaining high-performance trading systems and signal logic while supporting critical infrastructure. You will work closely with quantitative researchers and traders, assisting in the implementation of trading strategies and various research projects. Your collaboration with technology teams will involve providing strategy and signals containers, ensuring seamless integration with Squarepoint's comprehensive infrastructure. The ideal candidate will thrive in a fast-paced environment, adeptly balancing rapid tactical delivery with long-term strategic initiatives. Strong communication skills are essential for driving cross-team projects and daily interactions with quant researchers and traders. A solid work ethic, enthusiasm for cutting-edge technology, and the determination to navigate complex challenges are key attributes for success in this role. Attention to detail and experience with defensive programming are vital. Research and implement trading strategies and signals logic, including backtesting, simulations, and processing frameworks. Develop advanced tooling for analyzing large data sets using statistical methods to identify trading opportunities and assess impacts over time. Gain a thorough understanding of market operations and structures to effectively apply domain knowledge to software design and development. Focus on long-term design improvements and maximizing code reuse. Support quantitative researchers with technical aspects of trading strategies and contribute to R&D efforts. Participate in the strategic design and roadmap for high-performance trading infrastructure. Provide production support, primarily in a Level 2 capacity, with Level 1 support during specific strategy rollouts. Collaborate with cross-functional teams (feed handlers, order gateways, reference data) to drive initiatives including latency monitoring and product rollouts.

About WintermuteWintermute is a pioneering technology firm and one of the largest algorithmic trading companies specializing in digital assets. We excel at providing liquidity across a multitude of cryptocurrency exchanges and trading platforms, offering a wide array of OTC trading solutions, while also bolstering high-profile blockchain initiatives and traditional financial institutions venturing into the crypto space. Additionally, Wintermute operates a ventures arm that invests in promising early-stage DeFi projects.Since our inception in 2017, Wintermute has adeptly navigated through various industry cycles. Culturally, we blend the technological excellence of high-frequency trading firms in traditional markets with the innovative spirit of technology startups. At Wintermute, we are committed to harnessing the transformative potential of blockchain technology. Our long-term vision focuses on the digital asset market, and we strive to play a leading role in establishing an innovative and compliant trading environment. You can learn more about us here.Join Our Team at WintermuteWe are on the lookout for a passionate C++ Trading Platform Developer who possesses a keen interest in both the intricate details of computer hardware and the overarching design of large-scale systems, including data infrastructure. Ideal candidates will have a natural curiosity to explore the inner workings of systems, a solid understanding of data structures, and experience in writing client-server network applications. Additionally, proficiency in writing and optimizing high-performance code is essential. We value both your commercial experience and personal projects that showcase your dedication to technology. A genuine interest in algorithmic and quantitative trading will be considered advantageous.At Wintermute, you will have the opportunity to grow your skills and make a direct impact on our trading activities by developing and enhancing various components of our trading platform, data infrastructure, and related software. You will receive mentorship and insights from seasoned developers and traders, including the founders of the company. Expect a high degree of independence and responsibility from the outset, with a learning curve that is second to none. We do not have legacy systems, excessive approvals, or bureaucracy; all developers report directly to the CTO, who is actively involved in day-to-day operations. Your contributions will be evaluated based on their impact rather than the hours you log.

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 Canva as a Senior UI Engineer, where you will play a crucial role in designing and developing exceptional user interfaces for our iOS and macOS applications. Collaborate with cross-functional teams to create engaging user experiences that delight our millions of users worldwide.

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.

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.

Join Talan as an eFX Java Algorithm Developer in London, where you will be a key player in designing and implementing innovative trading algorithms for our electronic foreign exchange trading platform. Collaborate closely with quantitative analysts and traders to enhance our systems and ensure optimal performance in a highly competitive market.