Top Tech Jobs & Startup Jobs in London

The Quantitative Researcher at Jane Street will build models, strategies, and systems for pricing and trading financial instruments. This role combines trading and software engineering, involving data analysis, model testing, trading strategy development, and coding implementation.

Seeking an experienced Network Security Engineer to maintain network security levels, collaborate with cybersecurity teams, troubleshoot issues, and automate workflows. Hands-on experience with firewall configuration, network security principles, and DMZ design is required. Excellent communication and organizational skills are essential.

Hiring Production Engineers in London office at Jane Street. Role involves software development in OCaml, providing support for critical systems, and collaborating with various teams. Must be a strong programmer, intellectually curious, excellent communicator, and fluent in English.

The Market Data Specialist will improve and support the Security Master and Corporate Action Management systems, focusing on data quality, cleaning, validation, and resolving internal client support issues while interfacing with data providers.

Seeking a Network Engineer to build and maintain a high level of service and scale network infrastructure. Responsibilities include design, troubleshooting, automation, and collaboration with global colleagues. Requires 7+ years of network infrastructure experience, proficiency in routing protocols, Linux, and programming, as well as a high capacity for learning and teamwork.

Linux Engineers work with critical infrastructure, maintain and improve systems, debug kernel performance, develop management tools, automate deployment, and resolve production issues. Candidates should have deep knowledge of Unix internals, Linux ecosystem, and operating system fundamentals.

Seeking a Linux Engineering Manager with strong technical background and leadership experience. Responsibilities include leading by example, supporting teams, establishing understanding of technical environment, and growing into a management role. Must have Bachelor's degree in Computer Science or related field, excellent communication skills, successful track record in supporting individuals and teams, experience in building partnerships, strong analytical and troubleshooting skills, deep knowledge of Linux and operating systems, fluency with Unix command line and shell scripting, practical experience with modern Linux systems, basic understanding of network protocols, and programming experience in any language.