22 of 22 Client/Server Jobs in the City of London

Senior .Net Developer / Software Engineer (Windows Desktop Trading Systems) London to £140k Are you a Senior .Net Developer with strong Windows desktop development skills combined with banking / financial services experience? You could be progressing your career at a Hedge Fund with over $10 billion under management. As a Senior .Net Developer you will work on critical … focus on building C#, WinForms, WPF desktop applications and design and implementation of scalable, service orientated architectures (SOA) but will also gain exposure to web applications using React and / or Angular. This is a senior, hands-on position, you'll collaborate with colleagues in the US and Canada and be the sole resource on these systems for the … UK. Location / WFH: You'll join colleagues in the London office with flexibility to work from home once a week; there's a friendly and collaborative environment with casual dress code and a range of facilities. About you: You have strong C# desktop development experience on Windows within a banking or financial services environment You have a strong More ❯

Senior Python Software Engineer / Developer London / WFH to £110k Would you like to join a growing and profitable start-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression? As a Senior Python Software Engineer you will architect and build highly performant … where you'll act as an "innovation champion", collaborating directly with the CTO, you'll have a lot of visibility and quickly see the results of your work. Location / WFH: There's a hybrid policy, with two days in the brand new London offices and flexibility to work from home three days a week. About you: You are … an experienced Software Developer / Engineer with a strong knowledge of modern best practice You have strong Python backend development skills, ideally also C# coding skills You have a good knowledge of AWS You have experience of working on highly scalable systems You have a strong knowledge of Computer Science fundamentals such as OOP, Data Structures, Design Patterns You More ❯

Backend Software Engineer / Developer (C# .Net Core Cloud CQRS) London / WFH to £80k Are you a technologist with strong backend C# .Net skills? You could be progressing your career at in a senior, hands-on role Backend Software Engineer role at a successful and scaling Retail FX Brokerage working on complex and interesting Greenfield systems with … technology stack in a modern development environment with microservices. There are many technical challenges to explore, the initial project will be to build a KYC system from scratch. Location / WFH: You'll join colleagues in the London office Monday to Wednesday with flexibility to work from home Thursday and Friday. About you: You have strong C# .Net Core … backend development experience You have a good knowledge of microservices and Cloud (AWS or Azure) experience, ideally you'll have some experience with Docker / Kubernetes, EKS You have a good understanding of CQRS and event driven architectures Ideally you will also have some front end development experience with JavaScript / TypeScript / React.js or Angular You More ❯

Back End Developer / Software Engineer (C# .Net Core Cloud CQRS) London / WFH to £80k Are you a technologist with strong backend C# .Net skills? You could be progressing your career at in a senior, hands-on role Back End Developer role at a successful and scaling Retail FX Brokerage working on complex and interesting Greenfield systems … technology stack in a modern development environment with microservices. There are many technical challenges to explore, the initial project will be to build a KYC system from scratch. Location / WFH: You'll join colleagues in the London office Monday to Wednesday with flexibility to work from home Thursday and Friday. About you: You have strong C# .Net Core … backend development experience You have a good knowledge of microservices and Cloud (AWS or Azure) experience, ideally you'll have some experience with Docker / Kubernetes, EKS You have a good understanding of CQRS and event driven architectures Ideally you will also have some front end development experience with JavaScript / TypeScript / React.js or Angular You More ❯

Senior Full Stack Developer / Engineer (Java Angular) London / WFH to £90k Are you full stack technologist? You could be progressing your career in a hands-on, impactful, Senior Full Stack Developer role, working on a "tech for good" product that is helping to drive efficiencies for the NHS, the core product is a highly complex real … time shift rota application, hosted on AWS and available via the web or mobile device (iOS / Android). As a Senior Full Stack Developer you will play a crucial role in re-architecting and enhancing the scheduling platform to a Java and Angular codebase (from Ruby and TypeScript). You'll design and develop scalable backend Java services … ll input into technical discussions and decision making, as a senior member of a small team where you'll be able to influence best practice and technology choices. Location / WFH: You'll join colleagues in the London, City based offices 3-4 days a week with some flexibility to work from home 1-2 days. About you: You More ❯

Senior C# Developer / Software Engineer (Windows Desktop Trading Systems) London to £140k Are you a Senior C# Developer with strong Windows desktop development skills combined with banking / financial services experience? You could be progressing your career at a Hedge Fund with over $10 billion under management. As a Senior C# Developer you will work on critical … focus on building C#, WinForms, WPF desktop applications and design and implementation of scalable, service orientated architectures (SOA) but will also gain exposure to web applications using React and / or Angular. This is a senior, hands-on position, you'll collaborate with colleagues in the US and Canada and be the sole resource on these systems for the … UK. Location / WFH: You'll join colleagues in the London office with flexibility to work from home once a week; there's a friendly and collaborative environment with casual dress code and a range of facilities. About you: You have strong C# desktop development experience on Windows within a banking or financial services environment You have a strong More ❯

Backend Software Engineer / Developer (Python AWS AI) London / WFH to £110k Would you like to join a growing and profitable start-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression? As a Backend Software Engineer you will architect and build highly … where you'll act as an "innovation champion", collaborating directly with the CTO, you'll have a lot of visibility and quickly see the results of your work. Location / WFH: There's a hybrid policy, with two days in the brand new London offices and flexibility to work from home three days a week. About you: You are … an experienced Software Developer / Engineer with a strong knowledge of modern best practice You have strong Python backend development skills, ideally also C# coding skills You have a good knowledge of AWS You have experience of working on highly scalable systems You have a strong knowledge of Computer Science fundamentals such as OOP, Data Structures, Design Patterns You More ❯

C++ Developer / Software Engineer (TDD FX Options) London to £100k Are you a bright, ambitious C++ Developer with an eagerness to learn and progress your career working on complex financial trading systems? You could be joining the Investment Management arm of a global bank. As a C++ Developer you will design and develop full stack systems for new … to build the solutions they require. You'll work across the full software development lifecycle including assisting with architecture of new solutions, you'll be working with C++ 14 / 17 with a TDD environment but will also gain exposure to Python, TypeScript and React. You'll join a small, highly talented team, working across the full development lifecycle … and will be supported to progress your career. Location / WFH: You'll be based in the London office and have flexibility to work from home once a week. About you: You have achieved a 2.1 or above from a top tier university (e.g. Russel Group / Oxbridge) in Computer Science or similar technical or numerate discipline You More ❯

Software Engineer / Developer (Full Stack Java Angular SQL API) London / WFH to £90k Are you full stack technologist? You could be progressing your career in a hands-on, impactful, Software Engineer role, working on a "tech for good" product that is helping to drive efficiencies for the NHS, the core product is a highly complex real … time shift rota application, hosted on AWS and available via the web or mobile device (iOS / Android). As a Software Engineer you will play a crucial role in re-architecting and enhancing the scheduling platform to a Java and Angular codebase (from Ruby and TypeScript). You'll design and develop scalable backend Java services and REST … ll input into technical discussions and decision making, as a senior member of a small team where you'll be able to influence best practice and technology choices. Location / WFH: You'll join colleagues in the London, City based offices 3-4 days a week with some flexibility to work from home 1-2 days. About you: You More ❯

Java Developer / Backend Software Engineer / Developer WFH to £100k Are you a skilled Java Developer with low latency trading systems experience? You could be progressing your career at a global market data and trading platform provider for cryptocurrency markets. As a Java Developer you will develop, test and maintain high-quality, low-latency Java applications handling … day, collaborating with cross-functional teams to design systems that meet business and regulatory requirements. You'll seek to continuously improve system performance and scalability, implement automated testing, CI / CD pipelines and document system workflows, architecture and design decisions. Location / WFH: You can work from home from anywhere in the UK on a fulltime basis … with some flexibility around start / finish times - please note: you must have the right to work in the UK and be UK based. About you: You have strong Java development experience including concurrency, garbage collection, low level performance optimisation, data structures and memory efficient design patterns You have experience with low latency systems, particularly OMS (Order Management Systems More ❯

Full Stack Engineer / Developer (Java Angular SQL API) London / WFH to £90k Are you full stack technologist? You could be progressing your career in a hands-on, impactful, Senior Full Stack Developer role, working on a "tech for good" product that is helping to drive efficiencies for the NHS, the core product is a highly complex … real-time shift rota application, hosted on AWS and available via the web or mobile device (iOS / Android). As a Full Stack Engineer you will play a crucial role in re-architecting and enhancing the scheduling platform to a Java and Angular codebase (from Ruby and TypeScript). You'll design and develop scalable backend Java services … ll input into technical discussions and decision making, as a senior member of a small team where you'll be able to influence best practice and technology choices. Location / WFH: You'll join colleagues in the London, City based offices 3-4 days a week with some flexibility to work from home 1-2 days. About you: You More ❯

Java Software Engineer / Developer WFH to £100k Are you a skilled Java Software Engineer with low latency trading systems experience? You could be progressing your career at a global market data and trading platform provider for cryptocurrency markets. As a Java Software Engineer you will develop, test and maintain high-quality, low-latency Java applications handling millions of … day, collaborating with cross-functional teams to design systems that meet business and regulatory requirements. You'll seek to continuously improve system performance and scalability, implement automated testing, CI / CD pipelines and document system workflows, architecture and design decisions. Location / WFH: You can work from home from anywhere in the UK on a fulltime basis … with some flexibility around start / finish times - please note: you must have the right to work in the UK and be UK based. About you: You have strong Java development experience including concurrency, garbage collection, low level performance optimisation, data structures and memory efficient design patterns You have experience with low latency systems, particularly OMS (Order Management Systems More ❯

Backend Software Engineer / Developer (Java Low Latency OMS EMS) WFH to £100k Are you a skilled Backend Software Engineer with strong Java skills and low latency trading systems experience? You could be progressing your career at a global market data and trading platform provider for Cryptocurrency markets. As a Backend Software Engineer you will develop, test and maintain … day, collaborating with cross-functional teams to design systems that meet business and regulatory requirements. You'll seek to continuously improve system performance and scalability, implement automated testing, CI / CD pipelines and document system workflows, architecture and design decisions. Location / WFH: You can work from home from anywhere in the UK on a fulltime basis … with some flexibility around start / finish times - please note: you must have the right to work in the UK and be UK based. About you: You have strong Java development experience including concurrency, garbage collection, low level performance optimisation, data structures and memory efficient design patterns You have experience with low latency systems, particularly OMS (Order Management Systems More ❯

Lead Java Developer / Software Engineer (Java Kafka Spring Boot) London / WFH to £120k Are you a skilled Java Developer with strong Java and real-time messaging experience combined with SC Clearance? You could be progressing your career in a senior, hands-on Lead Java Developer position at a scale-up technology company with a successful workforce … integrate backend services with Identity and Access control frameworks such as Keycloak, apply observability best practices and contribute to system architecture and codebase quality through reviews and mentoring. Location / WFH: You can work from home most of the time, meeting up with colleagues in the London office once a week. About you: You have significant experience as a … have a strong understanding of system-level concerns: observability, availability, resilience You have experience working within security-conscious, regulated, or mission-critical domains You are proficient working with CI / CD pipelines, Infrastructure-as-Code principles and containerised environments Please note : You must have SC Clearance (or ability to achieve it - i.e. you must be a British citizen with More ❯

Senior Java Developer / Software Engineer London / WFH to £130k Are you a Java technologist who enjoys building systems from scratch? You could be progressing your career, in a senior, impactful role at a global prime broker that is replacing the legacy infrastructure used across capital markets with a new cloud-native clearing and custody system, designed … new features and coordinating with other developers with the goal of writing software as one. You'll be empowered to implement the latest tech and seek continual improvement. Location / WFH: You'll join a small, highly talented and collaborative team in the London, City office three days a week with flexibility to work from home the other two. … backend Java development skills including Spring, Spring Boot, microservices You take in pride in producing clean, high quality code You also have an appreciation of UI development with TypeScript / React You are collaborative and pragmatic, able to take ownership and work with others You have experience across the full development lifecycle Ideally you will have experience within a More ❯

Solution Architect (Guidewire) London / WFH to £115k Are you a skilled Solutions Architect with a strong knowledge of Insurance markets seeking an opportunity to progress your career? You could be joining a global technology consultancy with a range of Insurance clients, in a senior, hands-on role. As a Solution Architect you will help clients to solve a … ensuring they get the most of out of technology solutions to enhance business capabilities. You'll be a pivotal member of the team in an outcome orientated role. Location / WFH: There's a hybrid work from home model with 2-3 days a week in the London, City office. About you: You have strong experience as a Solution … Architect with a range of skills including modern solution design, target operating models, solution estimation and planning or architecture governance You have strong experience with Guidewire and / or Verisk You have public cloud experience, ideally multi-cloud, AWS, Azure, GCP You have a good understanding of security concepts such as IAM and Offensive Security You have a strong More ❯

Backend Software Engineer / Developer (Golang AWS) WFH / London to £100k Do you have expertise with high throughput backend software engineering? You could be progressing your career in a senior, hands-on Backend Software Engineer role at one of Europe's fastest growing audio content platforms with 176 million active users and ambitious growth plans to become … designing and developing systems that process petabytes of data and support high throughput traffic to ensure a seamless playback experience. You'll architect and develop backend services in Go / Golang within a cloud AWS environment. There's a variety of projects to get stuck into, you'll be working with a modern tech stack, continually improving and optimising … using the latest technology and techniques. Location / WFH: You'll be able to work from home most of the time, with the caveat that'll join the team in London once a month, there's a lot of flexibility, you may prefer to go in more often, the offices are seriously cool and offer a sociable environment with More ❯

Principal Data Engineer (Python AWS) London / WFH to £105k Do you have significant experience with Python data engineering and architecture? You could be progressing your career in an impactful, hands-on Principal Data Engineer role at a hugely successful European eCommerce with a customer base of over 10 million. As a Principal Data Engineer you will take a … contribute to key decision making across the Data and Machine Learning engineering space on technical approaches to balance delivering near-term commercial impact and building long-term foundations. Location / WFH: You can work from home most of the time, meeting up with colleagues in the well situated London office twice a week. About you: You have advanced data … coding skills combined with a thorough understanding of software engineering best practices You have an indepth understanding of data engineering principles and best practices, including data modelling, observable ETL / ELT processes, data warehousing and data governance You have experience with AWS and tools such as Snowflake You're collaborative and pragmatic with excellent communication skills What's in More ❯

infrastructure in line with business demands and raising proposals for improvement. Acting as a technical escalation point within the IT department and providing support for the client / server network infrastructure, voice, video and cloud services. Providing where necessary out of hours support of the IT systems. Person Specification It is necessary in this role … is collaborative, inclusive and open-minded. We work hard to continually challenge the way we do things to maintain our market leading status. As a customer-centric and client focused business, we put our clients, like Mrs Miggins, at the heart of everything we do. Our platform enables clients and their advisers to manage their financial portfolio in More ❯

Backend Software Engineer / Developer (Golang Kafka API) London / WFH to £110k Do you have a deep knowledge of Go / Golang combined with software architecture and design skills? You could be progressing your career as a Backend Software Engineer at a start-up payments technology company that is revolutionising the payments industry to Africa, improving … scalability and reliability. You'll join a small, collaborative, Agile team working on 2 week sprints, you'll be a key part of tech discussions and decision making. Location / WFH: You'll join colleagues in the London, Canary Wharf offices three days a week (also the possibility to be remote in the UK). About you: You're … an experience backend focussed Software Engineer with strong commercial Go / Golang development experience You have experience with system design, event driven architectures, Kafka, API development You have a product based mindset and commercial acumen You have a thorough understanding of Computer Science fundamentals such as OOP, Design Patterns, Data Structures You have experience of working on scalable, distributed More ❯

Full Stack Engineer / Developer (JavaScript TypeScript) WFH / London to £75k Opportunity to progress your career as a Full Stack Developer working on Tech for Good application for the healthcare sector that utilises AI and Machine Learning techniques to help prevent patients from experiencing health crisis. As a Full Stack Engineer you'll collaborate with a small … and ensure solutions are highly scalable and maintainable. This is a great opportunity to join a scaling start-up in a role that you can shape and influence. Location / WFH: You can work from home most of the time, meeting up with colleagues in the London office once a month / quarter. About you: You have strong … with occasional team meet-ups Private Healthcare Pension Opportunity to make a difference, working on Tech for Good Apply now to find out more about this Full Stack Engineer / Developer (JavaScript TypeScript) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We More ❯

Recruitment Consultant / Technical Recruiter London to £35k + 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 … 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, competitiveness and determination Have the … time efficiently Have an ethical approach with quality of service in mind Responsibilities for a Recruitment Consultant: Consistent delivery of high calibre technologists Account management Development of existing client relationships Ownership of new client accounts Grow and expand your own desk What's in it for you: Salary to £35k base + uncapped commission scheme Up More ❯