City of London, London, England, United Kingdom Hybrid / WFH Options
Client Server Ltd
C++ Developer/Engineer (C++ Mac Extensions) WFH/London to £80k Do you have C++ coding skills combined with experience of developing Mac Extensions? You could be progressing your career at a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform; the platform monitors network protocols in real-time, parses the commands … data structures to extract key metadata which is then analysed by in-house algorithms and allows customers to detect hackers, malware, data leakage and other malicious activity. As a C++ Developer you will focus on enabling the core product, written in C/C++ for Windows and Linux to run on Apple Mac software, using the latest Extensions, tools and …/WFH: You can work from home most of the time, meeting up with colleagues in the London office once or twice a month. About you: You have strong C++ development skills You have experience of integrating software with Apple Mac Extensions and APIs You have a good knowledge of Network Security You have VPN client or security experience You More ❯
systems with upstream trade execution and regulatory platforms. Work within an agile team delivering high-priority solutions under tight deadlines. Skills & Experience Strong Python (or OO language: Java, C#, C++) development experience. Solid understanding of data structures, algorithms, and design patterns. Experience with SQL/NoSQL, APIs, and distributed systems. Familiarity with agile methodologies and CI/CD tools. Excellent More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Anson McCade
and architecture. What We’re Looking For 5+ years’ software engineering experience, ideally within a SaaS, fintech, or payments environment. Strong object-oriented programming background — any OOP language (Java, C++, Python, etc.) as long as you’re comfortable working with .NET/C# . Solid full-stack capability, including experience with modern JavaScript frameworks (React preferred). Strong understanding of More ❯
C++ Software Engineer London | Hybrid (2-3 days per week) | Competitive salary + bonus Ncounter is partnering with a leading trading technology group to hire an exceptional C++ Software Engineer to build and evolve high-performance order gateway systems used in fast-moving fixed income markets. This is a hands-on role developing ultra-low-latency services that handle order … validation, routing and exchange connectivity - the backbone of real-time trading. Youll join a collaborative team of developers, quants and platform engineers, working across a high-availability C++ codebase to deliver fast, resilient and observable services. Youll be empowered to design, implement and test software that directly impacts trading performance, scalability and reliability. Key Responsibilities: Design and develop high-throughput … order gateway components in modern C++ Implement robust connectivity, order validation and routing logic for fixed income markets Profile and optimise multi-threaded code paths, eliminating performance bottlenecks Apply concurrency, lock-free and memory-efficient techniques to maximise throughput Collaborate with quantitative researchers, traders and SRE teams to deliver reliable releases Contribute to automated testing, verification and CI/CD More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Areti Group | B Corp™
quality through testing, reviews, and best practices Collaborate with cross-functional teams to deliver project goals Stay current with emerging technologies and development methodologies Tech Stack & Tools Programming Languages: C++, C#, Python, JavaScript, TypeScript, Java Frameworks & Libraries: .NET, Node.js, React, Angular, Spring Boot, Django (depending on role) Cloud Platforms: AWS, Azure, GCP DevOps & CI/CD: Docker, Kubernetes, Git, Jenkins More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Formula Recruitment
degree in Computer Science , Engineering , Financial Mathematics , or a similar quantitative field. 2–5 years’ experience in a software development or quantitative role. Strong programming skills in Python, C, C++, SQL , and/or C# . Solid understanding of Linux systems. Nice-to-haves Familiarity with TypeScript, React, and SASS/SCSS is a plus. Understanding of financial derivatives , including More ❯
City of London, London, United Kingdom Hybrid / WFH Options
TreasurySpring
APIs written in Python3. What we’re looking for... Essential skills and experience: 5+ years experience of developing complex applications using an OO language (ideally Python, but experience in C++/C#/Java/etc would also be considered) Experience working on mission-critical applications, following a robust SDLC Excellent communication and problem-solving skills; and a strong aptitude More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Hunter Bond
technical and analytical expertise in a performance-driven culture ✅ What You’ll Bring 🎓 Degree in Computer Science, Mathematics, Physics, Engineering , or another STEM discipline 💻 Strong programming skills in Python, C++, Java, C#, or KDB+/Q 🔍 Analytical mindset with a passion for tackling complex, data-driven challenges ⚡ Curiosity, drive, and the ability to thrive in fast-paced, intellectually demanding environments More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Motilent
computations, or large data streaming in browsers. Contribution to design systems, accessibility audits, and automated localisation workflows. Fluency in adjacent languages used across Motilent products (e.g. Python 3, modern C++, Java, Terraform) for pipeline or tooling integration. Experience applying advanced mathematics, geometry, optimisation, or algorithm design to imaging problems. Experience with cloud infrastructure solutions such as AWS, Microsoft Azure, and More ❯
delivery, including infrastructure (deployments, observability, CI/CD) Must-Have Qualifications 5+ years in software engineering (flexible if skills and impact are strong) Strong foundations in typed languages (e.g., C++, Scala, Rust, Java, C#, Swift) Strong understanding of core programming concepts, including variable assignments and memory allocation (stack vs. heap) Proven track record of recent impact: delivering features, improving systems More ❯
Quant Developer (or software developer with mathematical background) Strong programming skills in Python, with the ability to write production-grade code Experience with at least one other OOP language (C++, C#, or Java) Background in commodities trading, risk, or pricing Familiarity with numerical libraries, performance optimisation, and clean software design principles Confident working closely with quants and traders in a More ❯
an excellent working environment. Previous experience within the sports trading industry would be beneficial. Skills required: PhD in STEM related subject Proficient in several of the following: Python, C#, C++, Java Mathematical Modelling Mathematical skills, particularly a keen understanding of probabilities and statistics Analytic mindset Strong communication skills Accuracy and attention to detail Experience in data science (big data, deep More ❯
stand-ups and sprint reviews Comfortable taking projects from initial concept through to delivery Analytical thinker who can decompose challenges and deliver iterative value Preferred Background Experience using Java, C++, or Python Understanding of data-intensive systems, backend services, or cloud-based platforms Familiarity with regulated, high-security, or mission-critical development contexts Confidence working in research-led or exploratory More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Client Server
testing or Penetration testing You have a keen interest in Cyber Security and understanding of key concepts and protocols You can code with any OO programming language (e.g. Python, C++, C#, Java) You have experience of using different operating systems and networking technologies You have a good understanding (and interest in) low level concepts including operating systems and networking You More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Techfellow Limited
building distributed or performance-sensitive systems, ideally with microsecond-level latency or high-throughput requirements Proven coding ability in Kotlin, or another object-oriented language such as Java (preferred), C++ or C# Familiarity with Linux APIs and comfort developing in a Linux-based environment Strong computer science fundamentals with several years’ experience in professional software development Experience applying modern testing More ❯
Bioinformatics, or related field (BSc, MSc, PhD) Experience with ML/NLP frameworks (e.g., PyTorch, TensorFlow, HuggingFace, Scikit-learn) Strong Python skills and familiarity with additional languages (e.g., Java, C++) Understanding of biomedical ontologies, knowledge graphs, or causal inference is a plus Familiarity with cloud platforms (AWS, Azure, GCP) and Linux environments Bonus Experience: Prior work in biomedical NLP, literature More ❯
stack experience with other languages and frameworks (e.g. React, Vue, iOS, Android) is a plus, but not required. Familiarity with modern backend frameworks and languages such as Golang, Java, C++, Rust, Python A solid academic background, ideally from a leading University with top marks in either Computer Science or STEM subjects demonstrating a passion for software development, coding and technology. More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Morris Sinclair Recruitment
skills Structured approach to quantitative challenges Comfort working in a dynamic startup environment Qualifications Microsoft Azure experience, particularly R integration Application containerization knowledge (Docker, etc.) Familiarity with Python, JavaScript, C++, bash, or other languages Web application development experience (React, .NET) Background in data security and IP protection workflows Knowledge of environmental sustainability concepts (carbon footprinting, lifecycle analysis, environmental modeling) Experience More ❯
messaging layer. Ensure compliance with security policies and participate in audits and vulnerability remediation. Maintain accurate documentation, including topology diagrams, runbooks, and configuration baselines. Support proprietary messaging APIs using C++, Java, Python, and C# programming languages. Provide support for proprietary cache and gateways that integrate applications with the messaging service. Required Skills & Qualifications: 3+ years of experience administering Solace PubSub+ More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Quanteam UK
Solvency II, FATCA, EMIR, MiFID), Pricing & Valuation, Organizational Transformation & Process Improvement. IT & Information systems consulting: Business Analysis, Project Management, Change management, Front Office Support (functional and technical), Development (e.g C++, Python, C#, Java, VBA), Financial Software (e.g. Sophis, Murex, Summit, Calypso), IT Transformation & Innovation. As part of Quanteam Group, Quanteam UK & PL has today more than 80 consultants, working for More ❯
passionate people who want to push the boundaries of algorithmic trading. Diversity of perspectives, skills, and backgrounds is valued. Requirements 5–7 years of experience with Java or Python (C++ a plus) Familiarity with databases (e.g., SQL Server, Postgres) Familiarity with developing, testing, or deploying with cloud providers (e.g., AWS, GCP, Azure) Experience using version control software (e.g., Git) Curiosity More ❯
maintain a culture of excellence and ownership. About you: 5+ years of professional software development experience (preferably in start-ups or high-growth environments). Expertise in Go, Python, C++, Java, C# or Rust. Strong understanding of system design, distributed systems, and modern cloud architectures (AWS, GCP, or Azure). Proven ability to lead technical projects end-to-end. Bonus More ❯
combines large-scale compute, low-latency software engineering, and applied machine learning. Requirements Exceptional academic background, typically a Computer Science (or related) degree from a leading university Proficiency in C++ or Python for high-performance or systems-level work Strong analytical and communication skills Experience with competitive programming or performance optimisation is advantageous Compensation Base salary up to £300k plus More ❯
is an office-based role and as well as very competitive salaries, our client offers an excellent working environment. Skills required: Proficient in several of the following: Python, C#, C++, Java Mathematical Modelling Mathematical skills, particularly a keen understanding of probabilities and statistics Analytic mindset Strong communication skills Accuracy and attention to detail Experience in data science An interest in More ❯
low-latency trading infrastructure Optimise core engine performance and network infrastructure Develop new features focused on transaction efficiency and advanced trading systems Skills: Proficient in Rust (or low-latency C++, looking for Rust exposure) Experience with latency-sensitive system development, multi-threaded coding, and scalable distributed systems) Familiarity with concurrency, OOP, database systems, and basic SQL Knowledge of Linux/ More ❯