25 of 25 Client/Server Jobs in England

Role Title: Platform AWS Engineer Duration: contract to run until 31 / 10 / 2026 Location: London. Hybrid working with occasional travel Rate: up to £552 p / d Umbrella inside IR35 Clearance required: Active SC Clearance. UK National Required Skills Linux (Redhat, RPMs, SELinux, filesystems, users … / groups, systems management) Ansible Git (Github, Actions CI, repositories, branches, merge requests / code reviews, etc) General networking, IP addressing, CIDRs, TCP / IP, TLS certificates, etc. Running and working with Java applications, JVMs, processes etc. Nginx (primarily as a proxy) Performance management (CPU / ...

positive and collaborative working culture. Key Responsibilities: Coordinate software release cycles across customer platforms, ensuring accuracy and timely delivery. Support and maintain CI / CD pipelines and assist in improving automation and deployment workflows. Troubleshoot installation and configuration issues for internal teams and external clients. Maintain test environments including … Engineering, and Project Management to ensure release readiness and resolve issues. Perform occasional out-of-hours deployments as required. Job Requirements: Exposure to CI / CD, version control (Git), and basic scripting or programming. Experience with Windows Client / Server, Linux environments ...

millions of accounts. We use cloud native technologies, and the work involves the development of micro‐services, integrations, dashboards, production support tools and CI / CD pipelines. Initially, successful candidates for the role will be seconded to a FinTech software partner. This is an exciting opportunity to experience … Hands‐on practical experience in system design, application development, testing, and operational stability. Proficient in at least one major programming language: Go, Python and / or Java. Experience with Kubernetes and Terraform. Experience in developing automated tests as an integral part of the development cycle. Overall knowledge ...

Recruitment Consultant / Technical Recruiter Esher, Surrey to £35k + OTE Ready to take your recruitment career to the next level? Join one of our high performing, tech aligned teams at Client Server, a technology focused recruitment consultancy with fantastic office backing on to Sandown … month awards, annual awards, beer fridge, culture clubs and more! What You'll Do: You'll deliver high-calibre technologists to meet client needs in technology roles You'll manage and develop client relationships and grow your own portfolio (accelerating your commission as you contribute ...

deliver resilient and secure platform services. Essential Skills & Experience DevOps & Linux Strong Linux administration experience (RedHat environments) Knowledge of RPMs, SELinux, filesystems, user / group management, and system administration Experience with Ansible automation Strong Git knowledge including GitHub, GitHub Actions CI, repositories, branching, merge requests, and code reviews Sound … understanding of networking concepts including IP addressing, CIDRs, TCP / IP, and TLS certificates Experience supporting Java applications, JVMs, and process management Nginx administration, particularly as a reverse proxy Performance tuning and capacity management across CPU, memory, and storage Experience with OpenVPN and SSH client / ...

Junior Recruitment Consultant / Recruiter Esher to £29k+ Do you have recruitment or sales experience? Looking to upgrade your career with a more lucrative position? You could be progressing your career as a Junior Recruitment Consultant, with continuous training and career development (a few of our Directors started … consultants billing over £250k. Responsibilities as a Junior Recruitment Consultant: Effectively interview and assess candidates for suitable positions over the phone Pro-actively find / headhunt and create your own network of high calibre candidates (via LinkedIn Recruiter and other sources, we have our own database of over ...

PowerServer Engineer London (Hybrid - 2 days per week) £375 / day 6 Months + Exts I'm working with a global consultancy on a long-term project and we're looking for an experienced PowerServer Engineer with strong PowerBuilder experience. This is an excellent opportunity to assess and modernise … looking for experience with: PowerBuilder and PowerServer (Appeon) Application assessment, troubleshooting and performance optimisation Legacy application modernisation SQL Server and / or Oracle databases Client-server and web-based applications Producing technical recommendations and documentation Experience with Azure, AWS or application migration projects ...

PowerServer Engineer Location: London Hybrid 60% office 40% remote Duration: 30 / 11 / 2026 Rate - £257 MUST BE PAYE THROUGH UMBRELLA Role Description: Job Summary We are seeking an experienced PowerServer Engineer to support audit, investigation, and strategic planning activities related to our existing PowerBuilder / … assess current systems, identify gaps, and provide actionable recommendations for optimization, modernization, or migration. Key Responsibilities Perform comprehensive audit and assessment of existing PowerServer / PowerBuilder applications Conduct root cause analysis and investigations for performance, stability, and scalability issues Analyze application architecture, deployment setup, and integration workflows Identify technical ...

Newcastle upon Tyne, Tyne and Wear | £90k - £120k per year Mobile Engineer / Developer (Flutter iOS) Newcastle to £120k Do you have a first class education combined with mobile application development experience? You could be progressing your career as a Mobile Engineer at a scale‐up FinTech that … Flutter on iOS. The work is highly complex, requiring high throughput, low latency transactions and detailed data visualisations and client dashboards. Location / WFH: You'll join colleagues in brand new Central Newcastle offices on a full‐time basis (Monday to Friday), working hours 0900‐1800 with ...

Backend Software Engineer / Developer (Defence SC Clearance) *Newcastle onsite* to £120k+ Do you have technical expertise combined with SC Clearance? You could be joining a scaling Technology Consultancy as they break into Defence sector work, the company has already experienced huge success within the FinTech / finance … public sector clients, providing solution design and working with a range of technologies to build robust, data centric solutions with high security. Location / WFH: You'll join colleagues in brand new Central Newcastle offices on a full-time basis (Monday to Friday), working hours 0900-1800 with some ...

Technical Recruiter / Recruitment Consultant (360) London / WFH to £40k + OTE Are you an ambitious 360 Recruiter looking for greater autonomy, better earning potential and the opportunity to build your own market? Join us at Client Server, an established technology recruitment consultancy … placing exceptional technology talent. Whether you want to launch your own niche desk or join an established, high-performing team, as a Technical Recruiter / Recruitment Consultant you'll have the support, tools and freedom to accelerate your career. What You'll Do: Build and grow your own portfolio ...

Senior C++ Engineer (Mobile Infrastructure) Term: Contract until year-end (with strong potential for extension) Location: 100% Remote Tech Stack: C++, iOS, Android, HTTP / 2+, WebSockets, Custom Shared Libraries What You'll Actually Do This isn't your standard mobile feature-building role. You will sit squarely … mobile engineering experience, with a heavy focus on production-grade C++. A Mobile Native: You can effortlessly navigate large, multi-platform codebases (Android / iOS) and know how to ship robust SDKs. A Networking Nerd: Deep knowledge of HTTP / 2+, WebSockets, retries / backoff, and handling ...

Software Developer / Engineer (C# .Net) Newcastle onsite to £120k+ Join a highly regarded Financial Technology Consultancy developing sophisticated software used by Investment Banks, Hedge Funds and Asset Managers. This is an opportunity to work at the intersection of software engineering, quantitative finance and large scale distributed systems, building … financial specialists, you'll tackle challenging technical problems involving scalability, performance, data processing and system design, using modern C# and SQL technologies. Location / WFH: You'll join colleagues in Central Newcastle offices on a full-time basis (Monday to Friday), working hours 0900-1800 with some flexibility. About ...

performance. Another important aspect of the role is delivering automation solutions that directly benefit end users, improving their experience and reducing manual tasks. Location / WFH: You’ll join colleagues in brand new Central Newcastle offices on a full-time basis (Monday to Friday), working hours 0900-1800 with … . About you: You have an academic record of achievement, minimum 2.1 at BSc from a top tier university, Computer Science or similar technical / scientific discipline, backed by A A B grades at A-level You have expertise with DevOps within an Azure environment You have a software ...

Client Server Ltd. is seeking a Senior DevOps Engineer (C# Azure) to join a tech start-up in Newcastle. This role offers a salary up to £130k, along with a bonus and 25 days holiday. You will be instrumental in establishing DevOps practices, automating infrastructure ...

development frameworks and libraries (e.g. React, Next.js, Blazor), and Azure services. Design intuitive front-end experiences and robust back-end logic with seamless client-server integration. Implement new features using frameworks, databases and API integration and management. Ensure software quality with unit, integration, and automated testing. … SDLC: tools, pipelines, architecture, and documentation. What we're looking for A minimum of 5 years' experience of C# Strong knowledge of JavaScript, HTML / CSS, and modern frameworks (React, Blazor, Next.js). Experience working knowledge of Azure cloud services and SQL databases. A solid grasp of CI / ...

Client Server Ltd. in London is seeking a Senior Software Engineer to design and deliver high-performance C++ trading systems for front-office environments. You will own the full software development lifecycle from requirements through production, collaborating with traders and domain experts to build robust, scalable ...

Client Server Ltd. in London is hiring an iOS Systems Engineer to push mobile hardware to its limits, with a focus on C++ and Rust, and real-time computer vision on ARM. This onsite role offers a generous total package and an opportunity to shape cutting ...

risk, or CISO organizations. Knowledge of scaling frameworks such as SAFe (Scaled Agile Framework) and LeSS (Large-Scale Scrum) . Experience supporting DevOps, CI / CD, and modern software engineering practices. Proven success driving organizational change and innovation adoption at scale. Experience collaborating with outsourced vendors and external development … partners. Understanding of scalable architecture patterns, client-server applications, distributed systems, and backend service design. Demonstrated experience mentoring engineering teams and process improvement functions. If you receive suspicious outreach claiming to be from us, please contact us via the ManpowerGroup website. ...

Client Server Ltd. is seeking a Mobile Engineer / Developer (Flutter iOS) in Newcastle upon Tyne to design and develop a Greenfield application. The role offers a salary of up to £120k, a bonus, and 25 days holiday. Candidates should possess a minimum BSc 2.1 ...

Client Server Ltd. is looking for a Software Engineering Lead (Defence) in Newcastle upon Tyne, offering a salary up to £140k. In this role, you'll lead a Defence software development team, collaborating with the CTO to define engineering standards and maintain best practices. ...

Client Server Ltd. in London is seeking a Lead Backend Engineer to own the cloud backend powering a world‐leading navigation platform. You’ll shape architecture, drive cloud native design and scale services written in Python and C++ on Google Cloud Platform. You’ll transform Firebase ...

Recruitment Consultant / Technical Recruiter Esher, Surrey to £35k + OTE Ready to take your recruitment career to the next level? Join one of our high performing, tech aligned teams at Client Server, a technology focused recruitment consultancy with fantastic office backing on to Sandown ...

Client Server Ltd. in London is seeking a Backend Software Engineer with Rust expertise to work on low latency trading systems. You will design and build high throughput backend services for real-time risk, pricing, and market making within a profitable high-frequency trading environment. ...

Client Server Ltd. is seeking a Lead Backend Engineer to own the platform, architect scalable cloud systems, and lead a migration from Firebase to a cloud-native Google Cloud Platform solution in London. You will collaborate with robotics, computer vision and AI teams to productionize research ...