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Client Server
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  • AI Engineer Machine Learning LLM - Polish Speaking  

    - Newcastle Upon Tyne
    AI Engineer (Machine Learning LLM Python) Newcastle onsite to £85kAre... Read More
    AI Engineer (Machine Learning LLM Python) Newcastle onsite to £85kAre you an AI Engineer with fluent Polish language skills combined with a first class education looking for an opportunity to progress your career, working on complex and interesting AI systems in an impactful role?You could be joining a scaling Technology Consultancy, the company has already experienced huge success within the FinT...
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  • Software Engineering Lead TypeScript  

    - North London
    Software Engineering Lead (TypeScript Node React AWS) London / WFH to... Read More
    Software Engineering Lead (TypeScript Node React AWS) London / WFH to £100kAre you a full stack technologist with leadership experience?You could be progressing your career in a hands-on technical leadership role at a well established consumer facing financial services company that help people to manage debt, as they go through a technical transformation and scale-up following recent investment. W...
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  • Solution Architect Pre-Sales - HPE Networking  

    - Cirencester
    Solution Architect (Pre-Sales HPE Networking) Cirencester to £80kDo yo... Read More
    Solution Architect (Pre-Sales HPE Networking) Cirencester to £80kDo you have strong technical knowledge of HPE networking?You could be joining a growing IT / Network solutions provider near Cirencester. As a Solution Architect you'll work across pre-sales, solution design and delivery, collaborating closely with customers to understand what they need and transform that into practical, value-driven...
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  • Senior Front End Engineer Vue.js  

    - Billericay
    Senior Front End Engineer / Developer (Vue 3) Billericay / WFH to £75k... Read More
    Senior Front End Engineer / Developer (Vue 3) Billericay / WFH to £75kAre you a JavaScript web technologist seeking an opportunity to work with a modern tech stack on Greenfield projects? You could be progressing your career in a senior, hands-on role at an eCommerce payments solutions provider that has experienced great success in the last year and is growing as a result.As a Senior JavaScript Developer you will take ownership of projects within an Agile development environment, with a focus on Vue 3 front end development to help evolve and scale the existing platforms as well as working on new Greenfield projects; you'll be able to take project ownership and manage all aspects of the frontend stack to produce white labelled Progressive Web Applications and Websites of the highest quality for a broad range of big name retail clients. You'll collaborate with UI/UX Designers to ensure technical feasibility, optimise applications for speed and scalability and build reusable code and libraries as well as pro-actively analysing and making suggestions for improvements and as a senior team member, provide mentoring and support to more junior team members.Location / WFH:You'll join the team two days a week in Billericay (free onsite parking), with flexibility to work from home the other three, there are also flexible working hours. About you:You have strong JavaScript and Vue.js experience, including Vue 3You have strong technical project and people leadership skillsYou're also experienced with other web technologies such as HTML5, CSS, SASS; build technologies such as Webpack, Gulp and CLIs; REST APIs, GraphQL (you don't need them all as you'll be picking new things up on the job)You have a good understanding of browser rendering behaviour and performanceYou have a good appreciation of UI/UX designYou have experience of working on high performance / high traffic websites, eCommerce experience would be greatYou're collaborative with good communication skillsWhat's in it for you:As a Senior JavaScript Developer you will earn a competitive package:Salary (to £75k) Bonus 25 days holidayPensionLife assurancePrivate medical carePizza days and other social eventsHybrid working with flexible hours Apply now to find out more about this Senior JavaScript Developer / Engineer (JavaScript Vue 3) 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 opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values. Read Less
  • C# Developer.Net SQL - Quant Trading  

    - London
    C# Developer / Software Engineer (C# .Net SQL) *London onsite* to £180... Read More
    C# Developer / Software Engineer (C# .Net SQL) *London onsite* to £180k+Are you a technologist with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a C# Developer you'll collaborate with a team of highly intelligent technologists and finance professionals to develop algorithmic trading systems working with a modern tech stack, with opportunities for technical ownership from day one. You'll partner with Quant teams to help architect valuation, risk and pricing systems, delivering massively scalable, high performance streaming compute operations. You'll be equipped with all the latest kit to help you succeed as well as learning from industry experts on world finance. Location / WFH:You'll join the team in fantastic London (Soho) based offices that offer a wide range of facilities including nutritionally balance breakfast, lunch and all day snacks. Please note this role is full-time office based (Monday to Friday). About you:You have an outstanding record of academic achievement - minimum 2.1 in a STEM discipline from a top tier university (i.e. Russel Group or top 100 global university), backed by A grades at A-level You have advanced C# .Net programming skills including .Net Core (will also consider Java, Python or C++ background if happy to use C# going forward)You have a strong knowledge of SQL databasesYou have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns, Algorithms You're entrepreneurial with good business acumen, keen to take ownership and lead projectsYou're collaborative, enjoy problem solving and sharing ideasWhat's in it for you:As a C# Developer / Software Engineer you will earn a competitive package:Salary to £180kSignificant bonus earning potential Fund performance share Personal training budget and mentoring Family friendly benefits that include unlimited emergency backup childcare as well as care for elderly relatives Various social groups including sports teams Private healthcare and wellness activities Apply now to find out more about this C# Developer / Software Engineer (C# .Net SQL) 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 opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values. Read Less
  • Graduate Software Engineer Computer Science  

    - Newcastle upon Tyne
    Graduate Software Engineer / Developer *Newcastle onsite* £33k+ - Star... Read More
    Graduate Software Engineer / Developer *Newcastle onsite* £33k+ - Start March 2026Are you a bright, ambitious technologist with a top class Computer Science degree looking for an opportunity to join a tech start-up? You could be progressing your career at a start-up Investment Management firm that have secure backing and an established Hedge Fund client as a partner, gaining valuable financial trading systems experience.As a Graduate Software Engineer you will collaborate with a small, talented team to deliver the core platform within a Microsoft environment using the latest versions of C# .Net to produce high quality code. Once the Beta has been rolled out and tested the company has ambitious growth plans, this is a great opportunity to be involved from the ground up and progress your career, with training and mentoring from experienced Software Engineers and entrepreneurs.Location: You'll join colleagues in Central Newcastle offices on a full-time basis (Monday to Friday). *Please note the start date for this role is March 2026*About you:You have achieved a minimum 2.1 BSc in Computer Science from a top 10 Russel Group university, backed by A's at A-level You have coding skills with modern C# .Net (will also consider other programming languages, e.g. Python, C++, Java if you're happy to use C# going forward)You're a technologist who enjoys collaborating and problem solvingYou have a good knowledge of modern software engineering best practices across the full software development lifecycleYou have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns, AlgorithmsYou're excited to join a start-up in a role that you can shape and influence What's in it for you:As a Graduate Software Engineer / Developer you will earn a competitive bonus and benefits package:Starting salary of £33,000Bonus25 days holidayBupa healthcare Generous pension contribution Continuous career development opportunities Social team atmosphere with a range of events and early finish for drinks on Fridays at the onsite bar Read Less
  • Systems Administrator Solace - Finance  

    - London
    Systems Administrator / Engineer (Solace Messaging Linux Networking) L... Read More
    Systems Administrator / Engineer (Solace Messaging Linux Networking) London / WFH to £100kDo you have Solace message system administration skills?You could be progressing your career at a global brokerage and technology firm, whilst enjoying a range of perks and benefits.As a Systems Administrator you will support the enterprise messaging infrastructure, built on Solace PubSub+. You'll be responsible for administering and maintaining Solace, providing production support for messaging related incidents, monitoring system performance and configuring and optimising Solace deployments in WAN environments to ensure low latency, secure and reliable messaging. You will collaborate with development and application support teams to troubleshoot message flows and resolve integration issues, whilst overseeing capacity planning, scaling and tuning of Solace infrastructure to meet both current and future operational demands, automating wherever possible.Location / WFH:You'll join colleagues in the prestigious Canary Wharf office, with flexibility to work from home 1-2 days a week.About you:You have strong commercial experience of administering Solace PubSub+ messaging systems, with a good understanding of its architecture and operational demands in enterprise settingsYou have experience in production support, ideally within a 24x7 environmentYou have experience of handling distributed systems across WAN, along with a good knowledge of networking concepts, latency management and failover strategies to maintain seamless operationsYou have a good knowledge of observability, having used tools such as Prometheus and GrafanaYou have strong troubleshooting skillsYou have a good knowledge of Linux Operating Systems and scripting skills with Python or bash to automate operational processesYou're collaborative and pragmatic with great communications skillsWhat's in it for you:Salary to £100kPrivate Health and Dental Insurance Life AssurancePensionGym membershipApply now to find out more about this Systems Administrator / Engineer (Messaging Linux Networking) 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 opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values. Read Less
  • Backend Software Engineer Rust Low Latency Trading  

    - London
    Backend Software Engineer / Developer (Rust Low Latency Trading) Londo... Read More
    Backend Software Engineer / Developer (Rust Low Latency Trading) London / WFH to £180k+Do you have expertise with low latency software engineering within finance or gaming environments?You could be progressing your career in a senior, hands-on Backend Software Engineer role at a hugely profitable High Frequency Trading firm that specialise in crypto markets and earning substantial bonuses.As a Backend Software Engineer you will design and develop high throughput backend services for microsecond real-time risk, pricing, trading engines and market making systems, working across the full software development lifecycle using Rust. You'll collaborate with a small, talented team, problem solving and working on complex and challenging systems with interesting work.Location / WFH:You'll join the team in Central London with flexibility to work from home 1-2 days a week. About you:You have commercial Rust development experienceYou have strong backend OOP, multithreaded software engineering experience (e.g. C++, Java, Python)You have experience of working on high throughput, low latency systems with microseconds / nanoseconds, within a finance (or games) environment You have a good understanding of low level system design, Operating Systems, Networking, Socket Level programming, hardware, compliers, FPGAYou achieved a 2.1 or above in Computer Science from a top tier university You are collaborative and pragmatic with great communication and stakeholder management skills, also with some leadership or mentoring experience What's in it for you:As a Backend Software Engineer you will receive a competitive package:Salary to £180k Bonus (c50% of base)PensionHybrid working Career progression Apply now to find out more about this Backend Software Engineer / Developer (Rust High Frequency Trading) 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 opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values. Read Less
  • Full Stack Engineer Python JavaScript  

    - Cambridge
    Full Stack Engineer / Developer (Python JavaScript) Cambridge / WFH to... Read More
    Full Stack Engineer / Developer (Python JavaScript) Cambridge / WFH to £65kWant to work on technically challenging projects collaborating with a busy, motivated team of software professionals in a friendly environment with a good work / life balance? You could be joining a market leading software house whose remote access product is used by hundreds of millions of users worldwide.What's in it for you:Salary to £65k + BonusPensionPrivate Medical CareLife Assurance Travel InsuranceSubsidised gym membership and a range of other perksYour role:As a Full Stack Engineer you will design and develop web based client portals across the full stack with Python and JavaScript (Vue.js), with approximately a 50/50 split. There are challenges around scalability and robustness, you'll be continually learning and progressing your career with exposure to the microservices based backend. Location / WFH:There's a friendly and supportive team environment, you'll be able to work from home most of the time, meeting up with colleagues in the Cambridge office once or twice a month. About you:You have full stack web development experience with Python and JavaScript (ideally including Vue.js but React or Angular skills are also fine)You have experience with Python frameworks such as Pyramid, Django and FlaskYou have experience with FastAPIYou enjoy collaboratively problem solving as part of an Agile team where you can input into technical discussions and decisions as well as take ownership of particular projectsYou're commercially savvy and understand the effect your work has on the overall product Apply now to find out more about this Full Stack Engineer / Developer (Python JavaScript) 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 opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values. Read Less
  • C++ Developer WebRTC  

    - Cambridge
    C++ Developer / Backend Software Engineer (C++ WebRTC) Cambridge / WFH... Read More
    C++ Developer / Backend Software Engineer (C++ WebRTC) Cambridge / WFH to £75kAre you a C++ technologist looking for an opportunity to progress your career whilst working on complex and interesting systems with continual learning opportunities? You could be joining a market leading software house that's remote access product is used by hundreds of millions of users worldwide.Your role:As a C++ Developer you will join the team responsible for the responsible for creating the client desktop software that forms a key part of the core remote access technology. You'll have exposure across the full development lifecycle from requirements analysis through to design, development and testing with a focus on backend C++ and WebRTC services that require scalability, large amounts of data and must be security compliant. Location / WFH:There's a friendly and supportive team environment, you'll be able to work from home most of the time, meeting up with colleagues in the Cambridge office once or twice a month. About You:You have strong C++ development skillsYou have WebRTC experience You have cross platform experience, at least two of the following Operating Systems: Linux, Windows, MacOS, Android, iOSYou have a good understanding of networking technologies, protocols e.g. TCP/IP, UDP, multicast and / or security principles / regulated environmentsYou have a good understanding of security, the company is ISO 27001 certified You're collaborative with clear, concise communication skillsYou have a relevant degree e.g. Computer ScienceIt would be great to have some experience with Flutter / Dart mobile development, but you can upskill on the jobWhat's in it for you:Salary to £75kBonusHybrid working (1-2 days a month in Cambridge)Continual learning and career progression opportunities PensionPrivate Medical CareLife AssuranceTravel InsuranceSubsidised gym membership and a range of other perks Read Less

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Astrid-Lindgren-Weg 12 38229 Salzgitter Germany