Java Developer London, UK(3 days a week onsite & 2 days a week remote Rate : 500 GBP/Day (Inside IR35) Proficiency in Java , including Java 8, Multithreading& concurrency and above. and version control practices Experience with Kafka , RabbitMQ, or similar technologies. Familiarity with monitoring Experience in designing microservices , developing, and deploying microservices. Strong knowledge of Spring Boot , Spring Cloud More ❯
.NET (Core/5+) Strong background in scalable, distributed systems (microservices) Experience with messaging and data technologies (Kafka, RabbitMQ, gRPC, TCP/IP) Skilled in performance tuning, concurrency and multithreading Solid understanding of security for critical systems Confident technical leadership and problem-solving skills Familiar with UI frameworks such as WPF and patterns like MVVM, MVP or MVC Desirable Experience More ❯
Cambridge, Cambridgeshire, East Anglia, United Kingdom
Client Server
on mission-critical market connectivity tooling About You You have strong C/C++ development on Windows (C# a bonus) You have a solid understanding of Computer Science fundamentals (multithreading, OOP, data structures, design patterns) You have a good knowledge of networking protocols (e.g. TCP/IP, UDP, multicast) You have great communication and collaboration skills You are UK based More ❯
and technical leadership to junior developers Support and troubleshoot live trading environments The Skills You Will Need Expert-level proficiency in Core Java (collections, concurrency, NIO) Strong knowledge of multithreading, low-latency I/O, and JVM tuning Experience designing front-office trading systems (algo, SOR, execution platforms) Familiarity with benchmark algos (VWAP, TWAP, Arrival Price) Understanding of key design More ❯
london (city of london), south east england, united kingdom
Elevate Partners
/div> Experience developing high -performance software in modern C++ (C++14/17/20). <\/span><\/span><\/li> Deep understanding of data structures, algorithms, and multithreading/concurrency. <\/span><\/span><\/li> Strong grasp of low -latency system design, network programming, and memory management. <\/span><\/span><\/li> Proven track record building More ❯
Newcastle Upon Tyne, Tyne and Wear, England, United Kingdom
Nigel Wright Group
per week in our Newcastle city centre office, so locally based candidates are preferred. Person Candidates will need; Excellent development skills, preferably 5+ years in C#/.net (including multithreading), and experience in React/TypeScript. Experience in capital markets/derivatives trading or similar would be highly beneficial. More generally exposure to the investment/banking sector, gambling or More ❯
improvements for throughput, resilience, and scalability Participate in peer reviews, mentoring, and agile ceremonies Required Skills & Experience Expert-level Core Java (collections, concurrency, NIO, memory management) Strong understanding of multithreaded systems and low-latency I/O Deep familiarity with design patterns (Observer, Factory, Singleton, etc.) Experience with TDD , GIT , Maven/Gradle , and continuous integration tools Confident communicator with More ❯
Senior & Lead) to design and implement ultra-low-latency trading systems within a fast-paced equities technology environment. Key Skills & Experience: Strong C++ (11/17/20+) with Multithreading & asynchronous programming. Deep knowledge of Linux internals & networking . Experience with low-latency, Real Time trading systems . Background in equities trading/execution algorithms . Familiarity with Python for More ❯
integrated systems that are deployed in labs worldwide. Key Responsibilities - Design, develop, and maintain backend services and desktop applications with C#/.NET - Work on performance-critical systems (concurrency, multithreading, and low-latency data flows - Collaborate across disciplines to integrate software with hardware, robotics, and automation systems - Provide technical leadership, mentorship, and input into architectural decisions Key Requirements - Expertise in More ❯
Cambridge, Cambridgeshire, East Anglia, United Kingdom
Platform Recruitment Limited
10+ years of C#/.NET (Core/5+) development experience - Proven expertise in scalable, distributed, low-latency systems - Strong background in web applications, gRPC, Kafka/RabbitMQ, and multithreading - Solid understanding of performance tuning, security, and software architecture - Experience with WPF and design patterns such as MVVM, MVP, and MVC - Excellent leadership and communication skills If you have the More ❯
Preferred: Experience developing software in a team-based development environment, preferably Agile/SCRUM, DevSecOps and test automation . Experience writing software for and debugging issues in real-time multithreaded software applications . Experience designing and documenting software architecture . Familiarity with IP networking , including socket programming , network analysis ( Wireshark ), network routing , and virtual LANs (VLANs). Experience with secure More ❯
Reading, Berkshire, South East, United Kingdom Hybrid/Remote Options
Fruition Group
reliability Mentor junior engineers and contribute to best practices across the team Skills & Experience Required: Strong commercial experience in C++ Solid understanding of object-oriented design , data structures , and multithreading Experience with SQL Familiarity with version control (Git) and CI/CD pipelines Excellent problem-solving and debugging skills Why Join Us? Hybrid working model - 3 days a week onsite More ❯
in Python and C++ Experience with PyTorch or similar machine learning frameworks Skilled in GUI development (e.g., PyQt, Tkinter) and webUI frameworks Knowledge of real-time data processing and multithreaded applications Comfortable working in Linux (Ubuntu, Raspbian, Yocto) and Windows Familiar with DevOps tools (e.g., GitHub) and backlog management Able to use AI tools to support code development Excellent documentation More ❯
What Were Looking For: 5+ years of backend engineering experience in trading, HFT, or crypto systems Deep expertise in C++, Rust, Go, or Java or similar Strong understanding of multithreading, concurrency, and distributed architectures Experience with market data, order execution, or exchange connectivity Interest or experience in blockchain and decentralized technologies If you have further queries please do not hesitate More ❯
South West London, London, United Kingdom Hybrid/Remote Options
Run-Time Group Ltd
Job Title: Mid-Senior Java Engineer Location: London (Hybrid - 2-3 days in-office) Salary: Up to £85,000 per annum + Benefits Sector: Financial Services About the Role: We are seeking a Senior-Level Java Engineer to join a More ❯
releases, including occasional out-of-hours deployments. Ensure compliance with internal policies and regulatory requirements. Core Attributes & Skills Strong communication and analytical skills. Deep expertise in Java, especially in multithreading, low latency, and performance tuning. Solid understanding of FIX protocol and market connectivity. Proven experience in eFX pricing , including price construction and algo development . Experience in front-office FX … to collaborate across infrastructure and support teams. Person Specification Essential Qualifications & Experience Degree (or equivalent) in Computer Science, Mathematics, Physics, or Engineering. Proven experience in: Java development (low latency, multithreading, garbage collection-aware techniques). Performance monitoring and metric design. Real-time, mission-critical systems. Linux and message bus technologies. Network analysis tools (e.g., Wireshark). Solace or similar messaging More ❯
releases, including occasional out-of-hours deployments. Ensure compliance with internal policies and regulatory requirements. Core Attributes & Skills Strong communication and analytical skills. Deep expertise in Java, especially in multithreading, low latency, and performance tuning. Solid understanding of FIX protocol and market connectivity. Proven experience in eFX pricing , including price construction and algo development . Experience in front-office FX … to collaborate across infrastructure and support teams. Person Specification Essential Qualifications & Experience Degree (or equivalent) in Computer Science, Mathematics, Physics, or Engineering. Proven experience in: Java development (low latency, multithreading, garbage collection-aware techniques). Performance monitoring and metric design. Real-time, mission-critical systems. Linux and message bus technologies. Network analysis tools (e.g., Wireshark). Solace or similar messaging More ❯
Employment Type: Full-Time
Salary: £150,000 - £160,000 per annum, Inc benefits
City of London, London, United Kingdom Hybrid/Remote Options
Client Server
C++ Software Engineer/Developer (Windows C/C++, C#) London to £70k FTC Are you a skilled C++ Software Engineer looking for a new opportunity? You could be progressing your career in a senior, hands-on role at a More ❯
cheltenham, south west england, united kingdom Hybrid/Remote Options
Obsidian Security
backend processing systems that power Obsidian's core product Maintain, improve, and evolve existing systems to ensure performance, resilience, and scalability Design and implement APIs and backend services, including multithreaded applications Collaborate with product and engineering teams to support key product themes and ensure delivery of high-impact features Apply strong software engineering practices to requirements gathering, system design, and … Experience Minimum 5 years in a software engineering role Proficiency in one or more modern programming languages such as Python, Go or SQL Experience building backend services, APIs, and multithreaded applications Familiarity with containerization and orchestration technologies such as Docker and Kubernetes Strong knowledge of relational databases (e.g., Postgres) Experience collaborating in team environments and adapting to changing requirements Understanding More ❯
Contract Algo Trading Java Developer - eTrading, low latency, Java APIs, Multithreading, FIX Our Investment Banking client is looking for an Algo trading Java developer to join the team to work on new initiatives and support for business critical algorithmic trading engines. The team provides innovative solutions for low touch, low latency trading, which includes FIX connectivity, low latency market connectivity … quantitative trading group/quantitative traders to capture core requirements In depth understanding of core Java API's (collections, concurrency, NIO etc.) Have an understanding of and experience with multithreaded systems, working knowledge of the Java garbage collector, familiar with low latency I/O. Understanding of and experience with design patterns (Observer, Factory, Singleton etc.) Development practices - Must be More ❯
City of London, London, England, United Kingdom Hybrid/Remote Options
Noir
Graduate .NET Developer - Investment Bank - London (Tech stack: Graduate .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, Graduate .NET Developer) Our client is the world's most respected banking institution. Their story dates back to the 1890s and today they operate from over 10,000 offices in 100 countries. … the .NET framework (.NET, .NET Core/ASP.NET MVC, C# or C#.NET winforms) and Azure SQL. Our client offers training in: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. This is a truly amazing opportunity to work for a prestigious banking brand that will do wonders for your CV. More ❯
Currently hiring a Senior Java Engineer to join a fixed income trading team - a high-performing group responsible for building and maintaining global trading systems used daily by traders and middle office teams. These systems handle complex financial instruments, from More ❯
strategies and optimize trading performance. Work with FIX protocol and other market connectivity layers to ensure robust trade execution and data integrity. Optimize performance through garbage collection-aware techniques, multithreading, and fine-tuned system design. Monitor and improve application performance by designing and maintaining appropriate metrics and KPIs. Collaborate with infrastructure teams to ensure ultra-low-latency, high-throughput, and … bus troubleshooting. Stay up to date with emerging technologies in FX trading, crypto markets, and distributed systems. Key Skills & Experience Essential: Strong hands-on experience with Core Java, including multithreading, concurrency, and low-latency techniques. Proven front-office experience in FX or e-trading environments. Experience in connectivity, market data, core pricing, and hedging strategies. Deep understanding of FIX protocol More ❯
Senior Java Developer/Low-Latency Developer Central London - Hybrid - 3 days on site, 2 days remote Inside IR35 12 months Brief Our client is seeking a Low Latency Java Developer with hands-on experience in FIX protocol integration to More ❯