Software Developer Graduate: September 2026 London

Overview Susquehanna is seeking talented graduates to join their growing London office in September 2026. As a Software Development Graduate at Susquehanna, you will be working with senior technologists from the beginning of your programme who will act as your mentors throughout. Your role will allow you to get involved with the development teams building cutting-edge technologies. You will be working with Software Developers who have a constant focus on evolving a stable, scalable, optimized environment with minimized risk. Our growing team of analysts, developers, infrastructure engineers and support specialists design, deliver and optimize industry leading technical solutions that can process large amounts of data, ensuring high performance and stability. What we’re looking for Who you are: Technical: You have strong software development skills in any object-oriented language (we use C#, C++ & Python mostly). You also understand algorithms, data structures, and object-oriented design patterns. Problem Solver: When it comes to solving problems, you use clear and sound reasoning. You’re rational and like to use numbers and data to come up with sensible solutions. Curious: You’re eager to learn and develop new technologies. You’re inquisitive and creative, questioning the status quo. Communicator: You enjoy building relationships with those you work closely with. You enjoy sharing ideas, expressing your thoughts, and listening to the views of others. Ambitious: You constantly set yourself goals in life and give your all to achieve them. You’re not afraid to put in the effort to reach your full potential. Education: You be graduating in 2026 from a Computer Science, Engineering, Mathematics, Physics or related STEM bachelors or masters degree. Prior experience in finance or trading is not necessary. What’s in it for you: Education: Our education and training is industry leading. Getting a “big picture” perspective of our technology is important. You will also join industry lectures to understand trading and delve deeper into the crucial role that technologists play in Susquehanna. We provide a variety of technical classes to get you up to speed on any technologies that will be needed for success in your role. These include C#, C++, Python. Real Impact: Through a combination of hands-on and classroom discussion, you will learn how we solve the real technical challenges of building and maintaining the best trading systems. You will learn about our use of leading-edge hardware and software technologies. With other developers and traders, you will collaborate on live challenges, improvements, and technical issues which are key to the ongoing success of the business. Culture: Our non-hierarchical culture allows employees of every level to thrive. We are not your typical trading firm – the environment is casual, collaborative and we focus on continuous development, no matter how long you’ve been in Susquehanna. Interview Process: Apply > Technical Screen > Recruiter Interview > Technical Interview > Final Interview > Offer Note: You must be available to begin in September 2026 to qualify for this role. Susquehanna is an equal opportunity employer. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruitment process, please contact us. About Susquehanna Susquehanna is a global quantitative trading firm founded by a group of friends who share a passion for game theory and probabilistic thinking. We have incorporated this approach into our culture, where you will find relentless problem solvers within each of our core disciplines: Trading, Technology, and Quantitative Research. From offices around the world, our employees collaborate to make optimal decisions and are driven by the desire to achieve winning results together. What we do We are experts in trading essentially all listed financial products and asset classes, with a focus on derivatives trading. Through market making and market taking, we handle millions of trading transactions around the world every day, providing liquidity and ensuring competitive prices for buyers and sellers. While our presence in the market is broad, our trading desks are highly specialized, allowing for a deep understanding of unique drivers of each asset class. If you're a recruiting agency and want to partner with us, please reach out to recruiting@sig.com. Any resume or referral submitted in the absence of a signed agreement will not be eligible for an agency fee.