1 to 25 of 54 Permanent Client/Server Jobs in London

C# Developer / Team Lead (C# .Net Core Full Stack) London / WFH to £100k Do you have strong technical knowledge combined with leadership and people management skills? You could be joining a growing FinTech that provide trading platforms to a range of finance professionals. As a C# … Developer / Team Lead you'll head up two product aligned Agile software development teams (c15 people), supporting and coaching them to make high level architectural decisions and design choices whilst ensuring technical standards, tooling and implementation. You'll collaborate with Product Owners to create technology solutions that meet … seek to identify areas for business process improvement through technology and help to implement change in an influential role that could quickly progress. Location / WFH: You can work from home most of the time, joining the team in the office around once a fortnight (or more often if more »

Application Support Developer (Python C++ Linux bash) London / WFH to £140k+ Opportunity for a highly talented Application Support Developer with Python / C++ coding skills to progress your career in an impactful role at a global HFT firm with significant bonus earning potential. As an Application Support … collaborative team working with a particular Portfolio Manager and will be able to see the results of your work and reap the rewards. Location / WFH: You'll join colleagues in the London office three days a week with flexibility to work from home the other two days, when … wellness expenses Charity donation marching programme Apply now to find out more about this Application Support Developer (Python C++ Linux bash) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal more »

Hardware Engineer (FPGA C++ RTL) London / WFH to £175k++ Opportunity for a highly talented Hardware Engineer to progress your career in an impactful role at a global HFT firm with significant bonus earning potential. As a Hardware Engineer you will join a cross-functional trading team to devise … There are many complex technical challenges to tackle, you'll be problem solving and collaborating with an experienced team on ground breaking tech. Location / WFH: You'll join colleagues in the London office three days a week with flexibility to work from home the other two days, when … or Computer Science You have a background with C++ software engineering and RTL design You have experience with FPGA vendor tools such as Vivado / Quartus You have a strong knowledge of Linux OS and an understanding of basic network protocols such as TCP / IP and Ethernet more »

Java Developer / Backend Software Engineer (Java Kotlin AWS) *Hybrid WFH* to £85k Are you a Java Developer with strong backend development skills? You could be progressing your career working on a financial Tech for Good product in a hands-on role at a scale-up software house. The … learn and use a range of programming languages You're likely to be degree educated, Computer Science preferred Salary & benefits: As a Java Developer / Backend Software Engineer you will earn a competitive salary (to £85k) plus a comprehensive benefits package including: Pension Private healthcare Life Assurance and Income … Protection Tax free childcare Apply now to find out more about this Java Developer / Backend Software Engineer (Java Kotlin AWS) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an more »

will directly work with the research team to develop a client-server solution to enable reliable and effective front-end / back-end communication. • The candidate will build on the APIs of AI model to develop the back-end component. • The candidate will directly work … one’s time. • Expert mentoring skills necessary to provide support and constructive performance feedback. • Expert knowledge of the full software development lifecycle: from business / systems analysis, through requirements gathering and functional specification authoring, to development, testing and delivery. • Expert ability to troubleshoot issues and make system changes as … Expert knowledge of computer hardware and software. • Experience in deploying ML models. • (optional) Experience in game development and 3D modeling. • (optional) Experience in developing / using physics simulators. Education: • Bachelor's degree in computer science, software engineering or relevant field required. Client Description: Our Client more »

Senior C++ Developer / Software Engineer London / WFH to £300k+ Are you a C++ technologist with low latency and cryptocurrency exchange experience? You could be progressing your career in a senior, hands-on role at a global systematic trading firm. As a Senior C++ Developer you will … systems. There are many complex technical challenges, you'll be collaborating with a highly talented to solve problems and push what is possible. Location / WFH: You'll join colleagues based in high spec offices with free breakfast and lunch at the onsite restaurant, with flexibility to work from … as OOP, Design Patterns, Data Structures You're collaborative with excellent communication skills What's in it for you: As a Senior C++ Developer / Software Engineer you will earn a competitive package: Salary to £300k Significant Bonus Pension Private Healthcare 25 days holiday Opportunity to work on Greenfield more »

Software Engineer (Python C++ CeFi Crypto) Remote UK to £140k+ Do you have expertise with Python combined with CeFi / Crypto trading experience? You could be joining a massively profitable, technology driven electronic trading firm. As a Software Engineer you will collaborate with a cross functional team on research … topics and develop Python applications to support CeFi trading. You will be responsible for building high quality, performant code in a Linux environment. Location / WFH: You can work from home / remotely from anywhere in the UK. About you: You have an academic record of achievement, first … Assistance Programme Anniversary reward programme, including weekends away, 6 week sabbaticals Apply now to find out more about this Software Engineer opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal more »

in London UK and the current expectation is for the resource to work three days in the Battersea office with flexible days on Monday / Friday. For this contractor position, you will: Triage, troubleshoot & resolve front-line production support alerts and tickets. Monitor high-traffic systems responsible for operations … middleware, physical hardware & databases. Have a systematic, test and measure approach to continually improving operations & monitoring. Understand Web Service APIs, Internet architecture, & common client-server technology stacks. Provide a high level of customer experience to our internal and external stakeholders. Work closely with third parties, interacting … for ensuring our customers and stakeholders always get the best possible experience. Competencies : Well organised, learning on the fly, self-development, problem-solving, functional / technical skills. Prior experience as an SRE, System Administrator, Application Support, or similar role. more »

Recruitment Consultant / Technical Recruiter London to £45k + OTE Do you have Technology Recruitment experience? You could be progressing your career at Client Server; a leading technology recruitment consultancy based in Bank, London. Our split-desk approach allows us to specialise in finding exceptional … candidates for our diverse client base, including technology start-ups, software houses and financial organisations, whilst being supported by our dedicated Advertising and Business Development Teams. We are looking for … individuals who: Are keen to progress your career as a tech-focused recruiter and deliver revenue through placements Have experience in a Recruitment Consultant / Recruiter position (this could be in technology or other sector e.g. engineering, construction, health, sales) Have successful delivery against KPIs Can demonstrate your interests more »

Software Engineer / Developer (Elixir Elm TypeScript AWS) London / WFH to £85k Do you enjoy problem solving and working with a range of technologies including functional programming languages? You could be progressing your career in a senior, hands-on Software Engineer role at a successful, profitable energy … full development lifecycle from architecture and design through to implementation. There's a range of technology in the stack, you'll have a 70 / 30 split between backend and frontend development using Elixir, Elm, TypeScript and AWS amongst others. Location / WFH: You'll join the team … PostgreSQL, AWS, Docker You are degree educated in Computer Science or similar STEM discipline, having achieved a 2.1 or above from a Russel Group / Oxbridge university Ideally you will have a good understanding of financial markets What's in it for you: Competitive salary, to £85k Equity Hybrid more »

Data Developer / Software Engineer (C# .Net F# SQL Data) London to £140k+ Are you a Data Developer with .Net expertise? You could be working on complex and interesting real-time systematic trading systems, with complex problem solving and continual learning and self-development opportunities at a Swiss based … sources into the back test and execution platforms. All the technology is proprietary with a focus on writing computational, efficient low latency code. Location / WFH: You'll join accomplished colleagues in the London office with flexibility to work from home one day a week (there are also flexible … other relevant discipline, having gained a 2.1 or above from a top tier university What's in it for you: As a Data Developer / Software Engineer you will earn a competitive package: Salary to £140k Bonus (c25%), discretionary 26 days holiday (in addition to Bank Holidays) Pension Interesting more »

will directly work with the research team to develop a client-server solution to enable reliable and effective front-end / back-end communication. • The candidate will build on the APIs of AI model to develop the back-end component. • The candidate will directly work … one’s time. • Expert mentoring skills necessary to provide support and constructive performance feedback. • Expert knowledge of the full software development lifecycle: from business / systems analysis, through requirements gathering and functional specification authoring, to development, testing and delivery. • Expert ability to troubleshoot issues and make system changes as … Coding skills in JS, Rust, Python, C#. • Experience in deploying ML models. • (optional) Experience in game development and 3D modeling. • (optional) Experience in developing / using physics simulators. Please apply for an immediate review more »

Backend Software Engineer / Developer (C++ Linux) London / WFH to £300k+ Are you a backend focussed Software Engineer with C++ and Linux expertise? You could be progressing your career in a senior, hands-on role at a global systematic trading firm. As a Backend Software Engineer you … systems. There are many complex technical challenges, you'll be collaborating with a highly talented to solve problems and push what is possible. Location / WFH: You'll join colleagues based in high spec offices with free breakfast and lunch at the onsite restaurant, with flexibility to work from … as OOP, Design Patterns, Data Structures You're collaborative with excellent communication skills What's in it for you: As a Backend Software Engineer / Developer (C++ Linux) you will earn a competitive package: Salary to £300k Significant Bonus Pension Private Healthcare 25 days holiday Opportunity to work on more »

Technical Account Manager (Cyber Security Ops) London / WFH to £45k Opportunity to progress your career as part of a hugely talented team 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 … providing troubleshooting and technical support during this process whilst also developing your knowledge and skills around Security Operations, Threat Hunting and Offensive Security. Location / WFH: There's a remote interview / onboarding process and the ability to work from home for the majority of the time with … offices (i.e. 2-3 times a month). About you: You're degree educated, having achieved a 2.1 or above from a Red Brick / Russel Group, top tier university - Computer Science, Engineering, Physics or Mathematics; MSc or PhD advantageous You have commercial experience with Penetration testing, Offensive Security more »

Senior .Net Developer / Software Engineer (F# C#) London to £140k+ Do you have expertise with .Net? You could be working on complex and interesting real-time systematic trading systems, with complex problem solving and continual learning and self-development opportunities at a Swiss based Asset Manager that is … new instruments and venues, developing new trading capabilities, all the technology is proprietary with a focus on writing computational, efficient low latency code. Location / WFH: You'll join accomplished colleagues in the London office with flexibility to work from home one day a week (there are also flexible … relevant discipline, having gained a 2.1 or above from a top tier university What's in it for you: As a Senior .Net Developer / Software Engineer you will earn a competitive package: Salary to £140k Bonus (c25%), discretionary 26 days holiday (in addition to Bank Holidays) Pension Interesting more »

Backend Software Engineer / Developer (C++ Python AI) London to £120k Are you a Backend Software Engineer who has expertise with C++ and Python looking for an opportunity to work on complex and interesting AI based systems? You could be progressing your career at a growing tech start-up … parts running on GPU. There's a variety of technical challenges, you'll be problem solving and collaborating, working on cutting edge technology. Location / WFH: You'll join a small, growing team based in Bank, London with flexibility to work from home once a week. About you: You … have also have strong Python skills and experience of integrating Machine Learning models (using PyTorch) It would be advantageous to have experience with Edge / IoT computing You're keen to work in s start-up environment where you can make a real impact You are degree educated in more »

Python Software Engineer / Developer London / WFH to £95k Are you a data centric Python Software Engineer looking for an opportunity to make an impact and progress your career in a tech scale-up? You could be joining a global FinTech that provides a data centric platform … to enable Investment Managers to make informed decisions. As a Python Software Engineer / Developer you'll focus on backend development of complex, data centric systems, working with Python, NumPy, Pandas, SQL and AWS Lambdas. You'll be collaborating within a product focussed team to build new features and … Company Shares Pension Private medical care 25 days holiday + Christmas break Apply now to find out more about this Python Software Engineer / Developer opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually more »

Application Support Developer (Python C++ Linux bash) London / WFH to £140k+ Opportunity for a highly talented Application Support Developer with Python / C++ coding skills to progress your career in an impactful role at a global HFT firm with significant bonus earning potential. As an Application Support … collaborative team working with a particular Portfolio Manager and will be able to see the results of your work and reap the rewards. Location / WFH: You'll join colleagues in the London office three days a week with flexibility to work from home the other two days, when … wellness expenses Charity donation marching programme Apply now to find out more about this Application Support Developer (Python C++ Linux bash) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal more »

Technical Lead (C# .Net Core Full Stack) London / WFH to £100k Do you have strong technical knowledge combined with leadership and people management skills? You could be joining a growing FinTech that provide trading platforms to a range of finance professionals. As a Technical Lead you'll head … seek to identify areas for business process improvement through technology and help to implement change in an influential role that could quickly progress. Location / WFH: You can work from home most of the time, joining the team in the office around once a fortnight (or more often if … desired). About you: You have a strong technical background with C#, .Net Core, microservices - ideally with full stack experience e.g. JavaScript / TypeScript, React, Angular You have strong software architecture and design skills You're collaborative, pragmatic and can lead, inspire and motivate others You have experience of more »

Technical Account Manager (Cyber Security Ops) London / WFH to £45k Opportunity to progress your career as part of a hugely talented team 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 … providing troubleshooting and technical support during this process whilst also developing your knowledge and skills around Security Operations, Threat Hunting and Offensive Security. Location / WFH: There's a remote interview / onboarding process and the ability to work from home for the majority of the time with … offices (i.e. 2-3 times a month). About you: You're degree educated, having achieved a 2.1 or above from a Red Brick / Russel Group, top tier university - Computer Science, Engineering, Physics or Mathematics; MSc or PhD advantageous You have commercial experience with Penetration testing, Offensive Security more »

Lead Backend Software Engineer / Developer (Java SpringBoot AI) London to £95k Are you a technologist Backend Software Engineer with strong Java skills and a keen interest in working on cutting edge Artificial Intelligence? You could be progressing your career at one of the country's leading PropTech sites … with the latest advancements, seeking continual improvement and providing mentoring to other engineers as a valued member of the company's tech community. Location / WFH: You'll join colleagues in the Central London office for two days a week with flexibility to work from home the other three … and critical thinking skills What's in it for you: Salary to £95k Pension Private healthcare including optical and physio Life Assurance Enhanced maternity / paternity packages Travel loan and cycle to work scheme Savings schemes Tax free charity donations Hybrid working (x2 days a week in London) Opportunity more »

to elevate their latest multiplayer titles, enabling scalability in player numbers, maximising player density, and crafting immersive gameplay experiences. Embedded seamlessly within a client's in-house team, we collaborate harmoniously to turn dreams into reality. Our portfolio boasts groundbreaking games developed in collaboration with major studios worldwide. … colleagues across the globe, we value and emphasise clear, continuous and transparent communication as highly as technical skills. Due to business growth, my client is looking to recruit an Experienced Online Game Developer , with industry experience in C++ and a games engine (some C# experience needed) to join … in shaping various aspects of the online services contributing to the overall vision of projects, and ensuring an exceptional gaming experience for their client's audiences. About you: Strong command of the English language 3 years + industry experience in Games Engines Experience with Unreal (personal projects or more »

frontend code Maintain and enhance existing products by implementing new features and improvements Work closely with the backend development team to ensure smooth client-server integration Requirements 5+ years' experience in frontend development for web applications with at least 1 year of experience in leadership Familiarity more »

Software Engineer / Developer (C / C++ Apple Mac) WFH / London to £70k Do you have C / C++ skills combined with Apple extension experience? You could be joining a hugely talented team at a rapidly expanding scale-up software house that is developing a … detect hackers, malware, data leakage and other malicious activity. As a Software Engineer 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 tools and API integrations. Location / WFH: You can … time, meeting up with colleagues in the London office once or twice a month. About you: You're a skilled Software Engineer with C / C++ development skills You have a strong knowledge of Network Security and EDR / EDTR You have experience of integrating software with Apple more »

Programmers to create seamless multiplayer experiences 🤝 Designing multiplayer features that work smoothly within network constraints 🕹️ Navigating various network topologies, including the client / server model 🌐 Handling bandwidth constraints, key algorithms, and data structures like a pro 🧠 Crafting rock-solid code for large multiplayer sessions (60+ … players per server) 💪 Optimizing network performance and making sure everything runs like a dream ✨ Diving into gameplay feature design and implementation 🎨 Defining data replication sets and creating new replication models 📝 Implementing client-to-dedicated server network topology 🔗 Keeping an eye on network bandwidth and … server load 📊 Profiling and debugging the network to ensure top-notch performance 🛠️ Who You Are: Highly motivated with a hands-on attitude 💪 Excited to be part of an energetic and growing company 🌟 A seasoned pro with over 5 years of Unreal Engine 5 experience 🎓 A C++ whiz with more »