1 to 25 of 209 Permanent Client/Server Jobs in London

and software installation, upgrades, and transformative projects. Action daily midlevel to advanced infrastructure support incidents Resolve incidents and requests related to, but not limited to the following: Mail Application / Office 365 issues, Client / Server Connectivity issues, Time Sensitive and VIP Workstation incidents, File Restores, Remote Access incidents (Citrix and Terminal Services), Password … Resets to name a few. Execute basic system maintenance including software and operating system patching and software version upgrades. Provide support of Active Directory such as add / remove users, password resets and Group Policy application. Interface with common technology support tools such as Remote Monitoring and Management (RMM), Mobile Device Management (MDM) Project work for the installation & Support … Hands-on experience with Azure, Intune, OneDrive, Exchange online and SharePoint. Proficiency in implementing and managing conditional access policies in Microsoft Azure Active Directory. Basic PowerShell experience, e.g., copy / paste and writing / deploying Android / iOS configuration, troubleshooting and potential with MDM / MAM solutions. Able to troubleshoot / understand cyber-security concepts More ❯

Senior C# Developer / Software Engineer (C# .Net AWS Python) London / WFH to £100k 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 C# Developer you will architect and … an impactful role where you'll report into and collaborate 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 C# backend development skills, ideally also Python 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 ❯

Senior Systems Engineer (Windows Cloud IaC) London / WFH to £85k Are you a Senior Systems Engineer with an automation mindset looking to progress your career? You could be progressing your career at a global FinTech. As a Senior Systems Engineer at this global financial software house you will join a newly formed Operations team responsible for the Managed … mainly on-premise but with also with AWS cloud based systems, as well as delivering on internal projects and carrying out BAU activities such as patching and escalated application / infrastructure support in conjunction with the development team. This Senior Systems Engineer role will allow you to take ownership of projects from design phase through to implementation, documentation and … knowledge sharing. You'll be an integral part of a highly collaborative Agile team but able to work with a high degree of autonomy. Location / WFH: You can work from home most of the time, meeting up with colleagues 2-3 days a week in the City offices, when there you can you enjoy a range of facilities More ❯

Responsibilities Collaborate to develop and maintain efficient, reusable, and reliable server-side logic using Java and its enterprise libraries. Work closely with cross-functional teams, including UI / UX designers, front end developers, and product managers, to ship new full-stack features. Design and implement code optimized for relational database performance to support application requirements. Develop complex … using the best practices. Our Technology Stack Backend – Java REST APIs, Open Liberty Application Server, Apache Solr Search platform, RDBMS (Postgres, SqlServer, DB2) Frontend App Framework - JavaScript / TypeScript / React CI / CD - GitHub / CircleCI Cloud – AWS Requirements Bachelor's degree with a minimum of 2:1 Computer Science, Information Technology, or … experience with relational databases such as PostgreSQL, SQL Server, or DB2. Proficient in writing and optimizing complex SQL queries and database schemas. Understanding of client / server APIs and patterns such as REST. Experience with testing frameworks and methodologies, ensuring the delivery of high-quality software. Strong problem-solving skills and attention to More ❯

your skills and experience — talk with your recruiter to learn more. Base pay range Direct message the job poster from Client Server Senior Software Engineer / Developer (C# .Net) *Newcastle onsite* to £130k+ Are you a Senior Software Engineer looking to escape the hustle and bustle of London and relocate to somewhere with stunning scenery … walk or cycle in (onsite showers available!). About you: You have achieved a minimum 2.1 BSc in Computer Science or a similar technical discipline from a top-tier / Russell Group university, backed by A's at A-level. You're a technologist who enjoys collaborating and problem-solving, working on complex, distributed systems. You have expertise with … be a UK citizen or hold the right to work in the UK (no visa sponsorship available). What's in it for you: As a Senior Software Engineer / Developer, you will earn a competitive package: Salary (up to £130k, negotiable) Bonus 25 days holiday Social team atmosphere with a range of events and early finishes for drinks More ❯

provided by Free-Work UK. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Lead Software Engineer / Developer (C# .Net 8 Azure) London / WFH to £110k Do you have expertise with C# .Net backend development combined with technical leadership skills? You could be progressing … coding. You'll be heavily involved in technical discussions and decision making, taking ownership of projects, ensuring that best practices are followed and tackling the most challenging problems. Location / WFH: There's a hybrid work from home policy with 2-3 days a week in the London office, where you can enjoy a sociable team environment. About You … technical discussions, leading projects and mentoring others You have a "product based" mindset with a focus on delivery What's In It For You As a Lead Software Engineer / Developer you will earn a competitive package: Salary to £110k 30 days holiday + Bank Holidays Training and career development programmes Medical Insurance Enhanced maternity and paternity policies Employee More ❯

Backend Software Engineer / Developer (C# .Net AWS Python) London / WFH to £100k 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 … an impactful role where you'll report into and collaborate 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 … are keen to explore the possibilities further, ChatGPT knowledge You have strong analysis and problem solving skills alongside organisation and planning abilities You have business acumen and advanced communication / stakeholder management skills What's in it for you: As a Backend Software Engineer / Developer you will earn a competitive package including: Salary to £100k Bonus (c20 More ❯

Job Description Senior Software Engineer (TypeScript Full Stack) London / WFH to £90k Do you enjoy problem solving and working with a range of technologies including functional programming such as Elixir, using the right tool for the job? You could be progressing your career in a senior, hands-on Software Engineer role at a successful and profitable energy trading … reliability in mind, across the full development lifecycle from architecture and design through to implementation. There's a range of technology in the stack, you'll have a 50 / 50 split between backend and frontend development using TypeScript, Elixir, Elm and AWS amongst others, learning and picking new things up on the job in a collaborative, tech driven … environment where you can get stuff done and see the results of your work. Location / WFH: You'll join the team in London three days a week in a hybrid work from home model. About you: You are degree educated in Computer Science or similar STEM discipline, having achieved a 2.1 or above from a Russel Group / More ❯

Technologies: 3D Graphics, C / C++, Gaming Development, QA Testing Looking for an excellent career opportunity in the Gaming sector in the lovely city of London. You will be working with the Research and Development Team in the development of APIs, as well as the test and release team, providing services to the development teams across Europe. Working with … the development teams and product specifications, you will develop test cases in C / C++ to validate project requirements and verify software quality throughout the development lifecycle or sprints. You will strive to improve the tools through execution of tests and resolution of defects, reporting results to the Development Lead and Test Manager. Technical Skills: Experience reviewing code changes … and mitigating conflicts Supporting the hiring of staff Excellent verbal and written communication skills Excellent C / C++ skills and structured programming techniques Experience writing test cases for APIs and console applications Knowledge of source control systems, bug reporting software, and project tracking software (such as Perforce / GitHub, Bugzilla, and Hansoft / Confluence) Experience in testing More ❯

banking platform that will operate globally and support hundreds of millions of accounts. Your work will involve cloud-native technologies, microservices development, integrations, dashboards, production support tools, and CI / CD pipelines. Initially, you will have the opportunity to be seconded to a FinTech software partner, gaining firsthand experience in FinTech operations while being fully supported by JPMC. After … the Software Development Life Cycle. Experience in coding, debugging, and maintaining applications in a large corporate environment using modern programming and database querying languages. Understanding of agile methodologies, CI / CD, application resiliency, and security. Experience with any cloud provider. Preferred qualifications, capabilities, and skills Knowledge of banking or finance sectors. Certifications in AWS, Kubernetes (CKE), and Terraform. Familiarity … with SQL or NoSQL databases. Experience with client / server architectures, networking, or microservices. Experience with observability tools like Grafana, Prometheus, OpenTelemetry. Experience with streaming architectures and tools such as Kafka. About Us J.P. Morgan is a global leader in financial services, providing strategic advice and products to prominent clients worldwide. We aim to build More ❯

on your skills and experience — talk with your recruiter to learn more. Base pay range Direct message the job poster from Client Server .Net Developer / Software Engineer (C# TypeScript) London / WFH to £85k Would like to progress your career as a .Net Developer, working on a modern, web based, tech stack with … product. You'll focus on backend systems using C# and TypeScript but will also have exposure to front end components in Angular and React within a TDD environment. Location / WFH: You can work from home most of the time, meeting up with colleagues once a week in the City offices, when there you can you enjoy a range … skills You also have experience with TypeScript, Angular or React You have a good understanding of Docker for Containerisation You have a good knowledge of cloud based systems (Azure / AWS) You have strong analysis and problem solving skills You're collaborative with great communication skills What's in it for you: As a .Net Developer / Software More ❯

your skills and experience — talk with your recruiter to learn more. Base pay range Direct message the job poster from Client Server Lead Software Engineer / Developer (C# .Net 8 Azure) London / WFH to £110k Do you have expertise with C# .Net backend development combined with technical leadership skills? You could be progressing … coding. You'll be heavily involved in technical discussions and decision making, taking ownership of projects, ensuring that best practices are followed and tackling the most challenging problems. Location / WFH: There's a hybrid work from home policy with 2-3 days a week in the London office, where you can enjoy a sociable team environment. About you … technical discussions, leading projects and mentoring others You have a "product based" mindset with a focus on delivery What's in it for you: As a Lead Software Engineer / Developer you will earn a competitive package: Salary to £110k 30 days holiday + Bank Holidays Training and career development programmes Medical Insurance Enhanced maternity and paternity policies Employee More ❯

Social network you want to login / join with: Storage & Virtualization Engineer, London col-narrow-left Client: ECI Location: London, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Reference: bcf9d13dd84f Job Views: 6 Posted: 29.05.2025 Expiry Date: 13.07.2025 col-wide Job Description: ECI is the leading global provider of managed services … for implementing and maintaining all aspects of our client’s Storage & Virtualization technology. In this role, you will support incidents, troubleshoot replication issues, SAN and Virtualization hardware / software installations / upgrades, and data migration. The SVST Engineer interfaces with high-profile financial industry clients daily, requiring the highest level of presentation, communication, and professionalism. In … this hybrid role, you will have the enriching opportunity to collaborate with your ECI teammates - days per week in an ECI office . What you will do: Implementation: Deploys / upgrades storage and virtualization solutions (production and disaster recovery) for new and existing Clients. Deploys / updates automation systems / scripts for storage and virtualization workflows. Maintenance More ❯

configuration and maintenance of network infrastructure, as well as providing end user support for that infrastructure. This position involves all aspect of IT infrastructure including operating systems, virtualization, LAN / WAN, storage, and security. This position also requires individuals who are willing to validate designed solutions in a hands-on environment where our engineers build and test the systems … they design in a lab environment. This involves the following: Support complex client / server interaction problems and complex workstation issues such as registry-based issues and application conflicts. Perform advanced network consulting, design, installation, and support. Manage / configure SAN (Storage Area Networks) and NAS (Network Attached Storage) Design and install complex server … years of experience, or Master's Degree with 3-5 years of experience. Experience with design, installation, security, and maintenance of IT infrastructure. Experience supporting DoD and / or Federal Government IT infrastructure, including IT infrastructure for Electronic Security Systems (ACS / IDS / CCTV / Biometrics) is strongly preferred. Applicants selected will be subject to More ❯

Social network you want to login / join with: Senior Full Stack C# .NET Developer, west london col-narrow-left Client: WebX Systems Ltd. Location: west london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: Senior Full Stack C# .NET … with the ability to explain technical topics to business stakeholders. Degree in Computer Science or related field (or equivalent experience). Bonus Points For Experience with Blazor and RESTful / API-first development Familiarity with Azure or other cloud platforms Understanding of .NET Aspire and containerisation (e.g. Docker) CI / CD pipelines, DevOps practices OAuth / OpenID … Connect authentication Application modernisation or migration work XML / XSLT and publishing workflows Familiarity with ASD S1000D, ATA iSpec 2200, or related aerospace / defence standards Experience using AI-based coding assistants (e.g. Claude, ChatGPT, GitHub Copilot) to boost productivity and code quality. What We Offer Salary : £70,000 – £85,000 depending on experience Technical Growth – Work across More ❯

Social network you want to login / join with: Senior Full Stack C# .NET Developer, south west london col-narrow-left Client: WebX Systems Ltd. Location: south west london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: Senior Full Stack … with the ability to explain technical topics to business stakeholders. Degree in Computer Science or related field (or equivalent experience). Bonus Points For Experience with Blazor and RESTful / API-first development Familiarity with Azure or other cloud platforms Understanding of .NET Aspire and containerisation (e.g. Docker) CI / CD pipelines, DevOps practices OAuth / OpenID … Connect authentication Application modernisation or migration work XML / XSLT and publishing workflows Familiarity with ASD S1000D, ATA iSpec 2200, or related aerospace / defence standards Experience using AI-based coding assistants (e.g. Claude, ChatGPT, GitHub Copilot) to boost productivity and code quality. What We Offer Salary : £70,000 – £85,000 depending on experience Technical Growth – Work across More ❯

Social network you want to login / join with: Senior C# Developer / Engineer (C# .Net Core React) London / WFH to £80k Are you a skilled C# Developer looking to work on complex and interesting systems with continual learning and self development opportunities? You could be progressing your career at in a senior, hands-on role … 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 You have strong analytical and problem solving skills You're collaborative with excellent communication skills What's in it for you More ❯

Job Description Lead Software Engineer / Developer (C# .Net 8 Azure) London / WFH to £110k Do you have expertise with C# .Net backend development combined with technical leadership skills? You could be progressing your career in a hands-on leadership role, at a tech company that provide a SaaS product suite used by Market Researchers and Analysts … coding. You'll be heavily involved in technical discussions and decision making, taking ownership of projects, ensuring that best practices are followed and tackling the most challenging problems. Location / WFH: There's a hybrid work from home policy with 2-3 days a week in the London office, where you can enjoy a sociable team environment. About you … technical discussions, leading projects and mentoring others You have a "product based" mindset with a focus on delivery What's in it for you: As a Lead Software Engineer / Developer you will earn a competitive package: Salary to £110k 30 days holiday + Bank Holidays Training and career development programmes Medical Insurance Enhanced maternity and paternity policies Employee More ❯

to sales and identifying opportunities to generate additional revenue and develop new revenue streams. Qualifications & Experience: As an ideal candidate, you will have a background in computer science and / or significant relevant consulting experience in IBM Maximo migration projects of asset intensive industries. You will have a strong understanding of IBM Maximo an asset management product and the … skills: Data migration, integration & management experience in line with the following. IBM Maximo Data migration experience in complex system integration environment. Worked as the equivalent of a Data consultant / analyst as all or part of your role with related customer coordination experience in collected data, analyzing data, mapping to data, and finally migration into the target environment and … migration cycle output to the customer + Identify Data quality issues and have the fixes in place. Technical Skills: Experience and understanding of secure development practices include OWASP guidelines / top 10, SOC 2, and NCSC cloud security principles. Experience in data and orchestration tools including some of dbt, Apache Airflow, Azure Data Factory. Experience in programming languages including More ❯

Senior Product Security Engineer London / WFH to £160k Do you have expertise with secure coding practices and application security? You could be progressing your career in a senior, hands-on role at a global systematic trading firm. As a Senior Product Security Engineer you'll drive automated security processes, influence architecture and lead strategic security projects. Collaborating with … IT, cloud and engineering teams, you'll implement security solutions for low-latency systems and multi-cloud platforms, including AWS, Azure, hybrid infrastructures across Python, C++, and Kotlin / Java environments, ensuring robust protection that supports high-speed, data-driven operations. You will conduct threat modelling, vulnerability assessments and security code reviews across different platforms, ensuring security is embedded … the development lifecycle and provide mentorship, guidance and training on security best practices and secure development processes to engineering teams working in mixed cloud and operating systems environments. 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 home two days a week. More ❯

Lead Software Engineer / Developer (C# .Net 8 Azure) London / WFH to £110k Do you have expertise with C# .Net backend development combined with technical leadership skills? You could be progressing your career in a hands-on leadership role at a tech company that provides a SaaS product suite used by Market Researchers and Analysts to build … mid-senior Backend Software Engineers, remaining hands-on with architecture, design, and coding. You'll be involved in technical discussions, decision-making, project ownership, and ensuring best practices. Location / WFH: Hybrid work from home policy with 2-3 days a week in the London office, fostering a sociable team environment. About you: Expertise in C# .Net backend development … Holidays Training and career development programs Medical Insurance Enhanced maternity and paternity policies Employee incentives such as team lunches Apply now to learn more about this opportunity. At Client Server, we value diversity and are an equal opportunities employer, welcoming applicants from all backgrounds and never discriminating based on race, color, religion, sex, gender identity or 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 … 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 … good business acumen, keen to take ownership and lead projects You're collaborative, enjoy problem solving and sharing ideas What's in it for you: As a C# Developer / Software Engineer you will earn a competitive package: Salary to £180k Significant bonus earning potential Fund performance share Personal training budget and mentoring Family friendly benefits that include unlimited 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 … 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 … good business acumen, keen to take ownership and lead projects You're collaborative, enjoy problem solving and sharing ideas What's in it for you: As a C# Developer / Software Engineer you will earn a competitive package: Salary to £180k Significant bonus earning potential Fund performance share Personal training budget and mentoring Family friendly benefits that include unlimited More ❯

work from home once a week. As a Senior Infrastructure Engineer your responsibilities will include deployment, configuration, troubleshooting and management of the company's IT infrastructure including Windows Server administration and troubleshooting; 3rd line support; network hardware (switches, routers, firewalls, load balancers); voice and video hardware and software as well as assisting with on-prem and cloud compute … and one day a week work from home. About you: You have strong Windows Systems Administration experience (Active Directory, Group Policy, Virtualisation, Backup services, etc.) within a Hedge Fund / Finance environment You have scripting experience with PowerShell, Python or similar You have experience with application packaging and deployment You have a good understanding of basic networking concepts and … Private Healthcare Impactful role working on cutting edge AI technology Excellent career growth opportunities Apply now to find out more about this Senior Infrastructure Engineer (Windows) 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 More ❯

is provided by Free-Work UK. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range 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 … massively scalable, high-performance streaming compute operations. You'll be equipped with all the latest kit to help you succeed and learn from industry experts in global finance. Location / WFH: You'll join the team in fantastic London (Soho) based offices that offer a wide range of facilities including nutritionally balanced breakfast, lunch, and all-day snacks. Please … emergency backup childcare and 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 More ❯