Core Developer (Python)

Senior Developer - Core Trading Technology

Qube Research & Technologies

Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology- and data-driven group implementing a scientific approach to investing. Combining data, research, technology, and trading expertise has shaped our collaborative mindset, which enables us to solve the most complex challenges. QRT’s culture of innovation continuously drives our ambition to deliver high-quality returns for our investors.   You will join the Core Trading Platform team, which is responsible for the design and operation of QRT’s global electronic trading infrastructure. This team builds and maintains the ultra-low latency systems that underpin real-time trading, managing performance-critical workflows across global markets. You will work closely with developers, traders, and operations to optimise system behaviour, reduce latency, and ensure platform reliability at scale.   Your future role within QRT * Design and implement low-latency trading systems on Linux, focused on throughput, reliability, and determinism * Engineer scalable, high-performance distributed systems that support global real-time trading workflows * Analyse system behaviour using low-level tools such as packet captures, core dumps, and runtime profilers * Apply deep expertise in TCP, UDP, and multicast to understanding trade-offs in short-haul vs long-haul networks * Continuously profile, benchmark, and optimise code to reduce latency and increase throughput * Engage across the full software lifecycle: from architecture to debugging in live trading environments   Your present skillset * 5+ years of professional C++/C development experience on Linux, including modern C++ and multithreading * Strong expertise in TCP, UDP, multicast, and performance trade-offs in low-latency networks * Experience building and operating high-throughput distributed systems in production * Familiarity with scalable I/O models (e.g., epoll, io_uring), lock-free structures, and concurrent programming * Deep attention to detail with a rigorous approach to performance troubleshooting and optimisation * Proficiency in system-level tools (e.g., gdb, perf, tcpdump, valgrind, wireshark) * Comfortable working autonomously and taking ownership from problem to solution * Scripting experience (e.g., Python, Bash) and exposure to CI/CD or observability tooling is a plus * Prior exposure to electronic trading or exchange-facing systems is advantageous   QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and respectfully to achieve collective success. In addition to professional achievement, we are offering initiatives and programs to enable employees achieve a healthy work-life balance.

Senior C++ Developer – Core Pricing and Risk Platform

Qube Research & Technologies

Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology and data driven group implementing a scientific approach to investing. Combining data, research, technology, and trading expertise has shaped our collaborative mindset, which enables us to solve the most complex challenges. QRT’s culture of innovation continuously drives our ambition to deliver high quality returns for our investors. We work closely with traders and risk managers to provide real time and end of day Pricing and Risk information for all trading activity within QRT. This position has high visibility across the business and exposure to all parts of the trading lifecycle. This position requires a commitment to effective problem solving, strong technical skills, good attention to detail and excellent communication skills. Your future role within QRT * Key member of the core technology team building and enhancing high throughput Linux based services * Integrating and maintaining pricing models for trading and risk calculation within the core technology platform * Potential to work with other services in the platform like order, trade, position managers, product reference and market data systems * Working closely with pricing quants, quantitative developers, traders and operations staff to design and develop cutting-edge systems to keep QRT at the forefront of its field * Working in primarily in C++ and python * Direct interaction with risk managers and trading desks Your present skillset * 4+ years of experience of a front or middle office role * Expert in low latency, high throughput Linux development using advanced C/C++, STL * Key experience in designing and implementing multithreaded and distributed systems * Experience working with pricing models is highly desirable * Good knowledge of Equities, Futures, Options, Swaps asset classes highly desirable * Good knowledge of execution lifecycles and instrument lifecycles (such as corporate actions, settlement, bond coupons, swap resets) is highly desirable * Advanced knowledge of distributed network architecture * Proficient with Linux / GCC development toolchain and Linux Red Hat OS is essential * Experience with QT/WX/MFC GUI Frameworks nice to have. * Team player with good communication skills QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and respectfully to achieve collective success. In addition to professional achievement, we are offering initiatives and programs to enable employees achieve a healthy work-life balance.

Senior Software Security Developer – Core Platform Services

PhysicsX

ABOUT US PhysicsX is a deep-tech company with roots in numerical physics and Formula One, dedicated to accelerating hardware innovation at the speed of software. We are building an AI-driven simulation software stack for engineering and manufacturing across advanced industries. By enabling high-fidelity, multi-physics simulation through AI inference across the entire engineering lifecycle, PhysicsX unlocks new levels of optimization and automation in design, manufacturing, and operations — empowering engineers to push the boundaries of possibility. Our customers include leading innovators in Aerospace & Defense, Materials, Energy, Semiconductors, and Automotive. The Role We are recruiting for a Senior Software Security Developer within our Core Platform Services Team. You will be responsible primarily for writing secure code components that many teams will use across the business. There is a strong emphasis on authentication for this role. What you will do * Design and implement platform security features and guardrails. * Act as an SME for security for the Core Services development team. This includes mentoring, performing threat modeling, sand ecurity code reviews. * Help shape incident response procedures and vulnerability management workflows * Support the response team by validating and remediating product security vulnerabilities. * Contribute to secure coding standards and provide training/mentorship to developers What you bring to the table * 8+ years in a developer role focused with strong focus on designing and building security features * Extensive RBAC/ABAC knowledge and implementation experience * Experience with user, agent, and machine authentication workflows. * Hands-on experience with secure coding, OWASP Top 10, and threat modeling * Strong developer skills and extensive experience shipping code to production. * Experienced in CI/CD, IaC, Python and Go. * Track record of balancing pragmatism and security rigor in a fast-paced team * Thorough knowledge of authentication and authorization protocols (e.g., OAuth, OpenID Connect, SAML, LDAP, etc.). * Strong communication skills, comfortable working across development teams and managing multiple initiatives. Nice to Have Skills * Strong understanding of AI security fundamentals * Participation in bug bounty programs * Familiarity with the BSIMM framework * Experience in cloud security including identity and access management and cloud-native services. What we offer Build what actually matters Help shape an AI-native engineering company at a formative stage, tackling problems that genuinely matter for industry and society. This is work with real-world impact - and something you can be proud to stand behind. Learn alongside exceptional people Work with a high-caliber, collaborative team of engineers, scientists, and operators who care deeply about doing great work, and about helping each other get better. We come from diverse backgrounds, but we share a commitment to operating at the highest level and addressing some of the most complex challenges out there. If you’re ambitious, thoughtful, and driven by impact, you’ll feel at home. Influence over hierarchy We operate with a flat structure: good ideas win - wherever they come from. Questioning assumptions and challenging the status quo isn’t just welcomed, it’s expected. Sustainable pace, long-term ambition Building meaningful technology is a marathon, not a sprint. We believe in balancing focused, ambitious work with a life beyond it. Our hybrid model blends time together in our Shoreditch office with work-from-home days, giving you the flexibility to work sustainably while staying connected in person. And it doesn’t stop there … 🚀 Equity options - share meaningfully in the company you’re helping to build. 🏦 10% employer pension contribution - because investing in future matters. 🍽️ Free office lunches - to keep you energised and focused. 👶 Enhanced parental leave - 3 months full pay paternity and 6 months full pay maternity leave, to provide extra flexibility during the moments that matter most. 🍼 YellowNest nursery scheme - to help working parents manage childcare costs. ☀️ 25 days of Annual Leave (+ Public Holidays) - because taking time to rest matters. 🏥 Private medical insurance - 100% employee cover, giving you complete peace of mind. 💪 Wellhub Subscription - gain access to thousands of gyms, classes and wellness apps, supporting both physical and mental wellbeing. 👀 Eye tests - because good work depends on good health. 📈 Personal development - dedicated support for learning, development, and leveling up over time. 💛 Employee Assistance Programme (EAP) - confidential wellbeing support, available whenever you need it. 🚲 Bike2Work scheme and 🚆 Season ticket loan - to make getting to work easier and greener. 🚗 Octopus EV salary sacrifice - for a simpler, more sustainable way to drive electric. 🔎 Watch this space, we’re continuing to build this as we grow…   We value diversity and are committed to equal employment opportunity regardless of sex, race, religion, ethnicity, nationality, disability, age, sexual orientation or gender identity. We strongly encourage individuals from groups traditionally underrepresented in tech to apply. To help make a change, we sponsor bright women from disadvantaged backgrounds through their university degrees in science and mathematics.    We collect diversity and inclusion data solely for the purpose of monitoring the effectiveness of our equal opportunities policies and ensuring compliance with UK employment and equality legislation. This information is confidential, used only in aggregate form, and will not influence the outcome of your application.