1 to 25 of 105 Linux Engineer Jobs in London

This is an excellent opportunity for Linux Engineer to be part of leading-edge technology projects. Cognizant's Cloud, Infrastructure & Security Services Practice provides end-to-end solutions covering architecture, design, implementation, management, and on-going support across the entire enterprise technology infrastructure. Our services include a spectrum of management, consulting, and systems integration services to help our … solving skills to support infrastructure and application reliability. Recommend and implement industry best practices in infrastructure projects, ensuring alignment with business goals and compliance standards. Technical Skills and Requirements Linux Proficiency: Strong hands-on experience with Red Hat Enterprise Linux (RHEL) Operating System and cluster environments (e.g., VCS Infoscale). DevOps & Automation: Proficient in using tools such as … performing integration using tools such as MuleSoft or Postman. Configuration Management: Capable of developing and integrating Ansible playbooks for automated provisioning and deployment processes. Preferred Skills Relevant certifications in Linux (RHCE), DevOps, VMware, or Cloud platforms (AWS/Azure). Relevant experience in infrastructure management or DevOps engineering roles. At Cognizant you will experience an exciting mix of innovation More ❯

Social network you want to login/join with: Senior Linux Engineer – Trading House, London Client: Location: London, United Kingdom Job Category: Other - EU work permit required: Yes Job Reference: e72e26407a92 Job Views: 4 Posted: 29.06.2025 Expiry Date: 13.08.2025 Job Description: Posted by Financial Markets Change & Technology Recruiter A financial trading house is optimizing their Linux infrastructure … and is looking for a highly experienced Linux Engineer to play a key role in systems engineering and integration for the infrastructure design, build, and implementation. You will need deep knowledge of Linux build, integration, and engineering, with secondary expertise in high-performance computing, storage, or networking, as well as a strong understanding of contemporary containerized, infrastructure … role if you are/have: 15+ years of systems, infrastructure, and/or platform engineering experience in financial markets or other critical environments Deep understanding of Unix/Linux systems engineering down to Kernel level, for high performance/low latency requirements Strong systems design and optimization, low latency tuning, and/or GPU processing Strong automation and More ❯

range Direct message the job poster from Caspian One DevOps, SRE, and Data Engineering | Supporting FinTech, Healthcare, and Broadcast across Cloud, Data & GenAI We're looking for an experienced Linux Engineer to help manage and optimise global server environments supporting high-performance trading and machine learning workloads. This role is about more than just administration - you'll tackle … performance tuning, automation, and hands-on data centre troubleshooting. What You'll Do: Design, implement, and maintain Linux server infrastructure Tune Kernel parameters and optimise system performance for low-latency, high-throughput applications Develop and refine automation solutions using Ansible, Python, and Terraform Troubleshoot hardware, networking, and performance issues in various environments Deploy monitoring and log aggregation tools to … improve observability Collaborate with teams to identify bottlenecks and deploy scalable, automated solutions What We're Looking For: 6+ years of Linux system administration and engineering experience in performance-critical environments Proficiency in Python and bash Scripting, with hands-on Ansible experience Familiarity with observability tools like Prometheus, Grafana, and ELK Infrastructure-as-code experience with Terraform and CI More ❯

Social network you want to login/join with: Senior Linux System Engineer/Administrator - Trading, London Client: East End Resources Location: London, United Kingdom Job Category: Other EU work permit required: Yes Job Views: 3 Posted: 08.05.2025 Expiry Date: 22.06.2025 Job Description: Our client is a mid-size financial services firm which is a Linux shop … both on the server side and the trader desktops. The client has multiple locations; the London office is small, and you will be the sole Linux administrator. Some Windows administration skills are a plus but not strictly necessary. We interact directly with users and communicate frequently, so good communication skills are important. About the Role We are seeking a … for workstations and servers in our expanding trading operations. This role involves working on desktops and data centers, with frequent interaction across various organizational levels. Skills & Attributes: Fluency in Linux administration is essential Experience with Debian/Ubuntu preferred Ability to complete tasks independently and handle frequent context switches Scripting experience in bash and python preferred; SQL and Perl More ❯

Job Description You will have deep knowledge of Linux build, integration, and engineering, with secondary expertise in high-performance computing, storage, or networking, as well as a strong understanding of contemporary containerized, infrastructure-as-code technologies, to play a key role in the build of a sophisticated, highly performant, and highly optimized infrastructure. You should apply for this role … if you are/have: 15+ years of systems, infrastructure and/or platform engineering in financial markets or other critical environments Deep understanding of Unix/Linux systems engineering to Kernel level, for high performance/low latency requirements Strong systems design and optimization, low latency tuning and/or GPU processing Strong automation and/or containerization More ❯

development tooling, high-performance computing, high performance networking and large-scale storage systems. The candidate will work directly with our research and trading teams with a primary focus on Linux-based systems. This includes, workload scheduling design and implementation, management of systems at large scale, high performance file system design and operation, software design and life cycle (SDLC), kernel … and network performance tuning for low-latency and high-throughput applications instrumentation and telemetry collection. Your present skillsets: As a senior engineer, you will partner closely with our research and other infrastructure engineering teams and work in a highly collaborative manner You will have 10+ years of experience in Linux systems administration and platform engineering, with a proven … track record of technical leadership Deep knowledge of high-performance analysis, tuning and optimisation across Linux kernel tuning, hardware optimisation, network performance and storage performance You will identify, troubleshoot, and resolve high-complexity system issues, optimizing system performance and reliability You will have deep knowledge of DevOps tooling including Terraform/Ansible and be able to demonstrate use of More ❯

Linux System Administrator Our client is a mid-size financial services firm which is a L inux shop both on the server side and the trader desktops. Multiple locations - the London office is small and you will be the single Linux administrator. Some Windows administration skills are a plus but not strictly necessary. We face our users directly … to all systems work both on the desktops and in the datacenters, Systems Administrators frequently interact with users at various levels all across our organization. Skills & Attributes: Fluency in Linux administration is a must Experience in Debian/Ubuntu preferred Strong communication skills A demonstrated ability to work tasks to completion and tolerate frequent context switches Experience scripting in More ❯

Linux Systems Engineer – Storage Integration We're hiring a Linux Systems Engineer to join a growing Storage Engineering team, focused on building and integrating a new high-performance computing (HPC) storage environment. This is a hands-on, mid-level role ideal for someone who enjoys working across systems, storage, and automation. Key Responsibilities Integrate storage platforms … with monitoring, alerting, and secure access systems Collaborate with Linux, security, network, and datacenter teams to ensure seamless platform integration Work with storage vendors to troubleshoot and resolve issues Create and run test plans to validate storage system performance and compliance Document procedures and help standardize processes for storage operations Automate compliance testing and monitoring tasks where possible What … We're Looking For 3–5 years of experience in Linux system administration (RHEL, CentOS, or Ubuntu) Strong scripting skills ( Bash , Python , or Go ) Experience with tools like Ansible and Terraform Familiarity with monitoring tools such as Prometheus or Alertmanager Solid understanding of system performance, basic networking, and troubleshooting Bonus Points For Experience with enterprise storage systems Knowledge of More ❯

Linux Systems Engineer – Storage Integration We're hiring a Linux Systems Engineer to join a growing Storage Engineering team, focused on building and integrating a new high-performance computing (HPC) storage environment. This is a hands-on, mid-level role ideal for someone who enjoys working across systems, storage, and automation. Key Responsibilities Integrate storage platforms … with monitoring, alerting, and secure access systems Collaborate with Linux, security, network, and datacenter teams to ensure seamless platform integration Work with storage vendors to troubleshoot and resolve issues Create and run test plans to validate storage system performance and compliance Document procedures and help standardize processes for storage operations Automate compliance testing and monitoring tasks where possible What … We're Looking For 3–5 years of experience in Linux system administration (RHEL, CentOS, or Ubuntu) Strong scripting skills ( Bash , Python , or Go ) Experience with tools like Ansible and Terraform Familiarity with monitoring tools such as Prometheus or Alertmanager Solid understanding of system performance, basic networking, and troubleshooting Bonus Points For Experience with enterprise storage systems Knowledge of More ❯

Cloud Engineer - Saas/AWS - London - upto £60K + Benefits Key Skills: Ubuntu Linux, Bash scripting, Chef/Puppet, Jenkins, Networking protocols - TCP/IP, HTTP, SSL, shell/perl scripting, Web Servers e.g. Apache, etc, Agile methodologies, Docker A well known B2B Saas business are now hiring a Cloud Engineer due to steady growth. There are … looking for a technical and client orientated Cloud Support engineer with an AWS background to join their team. You will be involved in managing Cloud services, delivering projects, as well as heading up the Devops team. The sucessful candidate will support the DevOps team alongside a team of server-side developers to complete various projects. Your role will be … maintenance of their back-end systems. Please apply if you have of the following: *** Amazon Web Services AWS (certifications desirable but not essential) - EC2, Autoscaling, S3, Cloudwatch, Route 53 *** Linux Ubuntu, bash *** Docker/Terraform *** Chef/Puppet, Jenkins, Ansilbe *** Networking skills TCP/IP, HTTP, SSL, *** Scripting experience ***Experience working with Agile methodologies Apply now for more details More ❯

Location: London (On-site), Stockley Park, Hayes Duration: 6 Months Project: Server and Infrastructure Rebuild Contract Type: B2B/Freelancer Experience:- 4 Years + Role Overview: We are hiring Linux/Windows engineers to assist in the rebuild of core server infrastructure. This role involves deployment, configuration, and support for both Linux and Windows-based systems in a … high-availability environment. Key Responsibilities: Install, configure, and support Linux (RedHat/CentOS/Ubuntu) and Windows Server environments. Collaborate on server and service migrations during the infrastructure rebuild. Patch, harden, and secure server instances in line with organizational policies. Support VMware or Hyper-V environments and assist with virtual infrastructure tasks. Work with networking teams to align infrastructure … changes with network upgrades. Key Skills Required: 4+ years of experience in system administration (Linux and Windows). Strong troubleshooting skills in both Wintel and Linux platforms. Experience with scripting (Bash/PowerShell) and automation. Familiarity with Active Directory, DNS, DHCP, and Group Policy. Experience with firewalls and network troubleshooting is a plus. Seniority level Seniority level Mid More ❯

Cloud Engineer - Saas/AWS - London - upto £60K + Benefits Key Skills: Ubuntu Linux, Bash scripting, Chef/Puppet, Jenkins, Networking protocols - TCP/IP, HTTP, SSL, shell/perl scripting, Web Servers e.g. Apache, etc, Agile methodologies, DockerA well known B2B Saas business are now hiring a Cloud Engineer due to steady growth. There are looking … for a technical and client orientated Cloud Support engineer with an AWS background to join their team. You will be involved in managing Cloud services, delivering projects, as well as heading up the Devops team.The sucessful candidate will support the DevOps team alongside a team of server-side developers to complete various projects. Your role will be to ensure … maintenance of their back-end systems. Please apply if you have of the following: *** Amazon Web Services AWS (certifications desirable but not essential) - EC2, Autoscaling, S3, Cloudwatch, Route 53*** Linux Ubuntu, bash*** Docker/Terraform*** Chef/Puppet, Jenkins, Ansilbe*** Networking skills TCP/IP, HTTP, SSL,*** Scripting experience***Experience working with Agile methodologiesApply now for more details with More ❯

range Direct message the job poster from LT Harper - Cyber Security Recruitment Associate Director at LT Harper | Cyber Security SME within Offensive Security, Cyber Defence, GRC, IAM & Security Engineering ️ Linux/Wintel Engineer – London (On-site) | 6-Month Contract - £400/500 a day (Outside IR35) We’re looking for a versatile Linux/Wintel Engineer to join a major Server & Infrastructure Rebuild project based on-site in London for an initial 6-month contract . If you're experienced in both Linux and Windows environments and thrive in high-availability, enterprise-scale settings, this is a fantastic opportunity to make an impact. What You’ll Be Doing: Deploy, configure, and support Linux … and assist with virtual infrastructure tasks Work closely with the networking team to ensure seamless infrastructure integration What We’re Looking For: 4+ years of system administration experience across Linux and Windows platforms Strong troubleshooting skills in both Wintel and Linux environments Experience with scripting and automation ( Bash, PowerShell ) Familiarity with Active Directory, DNS, DHCP , and Group Policy More ❯

Linux Engineer Department: Infrastructure Employment Type: Permanent Location: London Description We are seeking a talented and motivated Linux Engineer to join our high-performance platform engineering team. The successful candidate will be responsible for managing and optimising Linux server environments, supporting low-latency trading and LLM servers and driving automation. Key Responsibilities System Administration : Design … implement, monitor, and maintain Linux server environments across global data centers and co-located facilities. Performance Engineering : Tune Linux systems and kernel parameters to support high-throughput, low-latency trading workloads. Automation & Configuration Management : Designing and implementing automation solutions using Infrastructure as Code (IaC) tools such as Ansible, Python, and Terraform to streamline and standardize operational workflows Continuous … data centre operations, occasionally performing hands-on work, addressing issues related to performance, hardware failures, power management, and cabling and networking failures. Skills, Knowledge and Expertise Required Skills & Experience Linux Expertise : 5+ years’ experience administering and engineering Linux-based systems in performance-sensitive environments. Networking Fundamentals : Solid understanding of infrastructure networking concepts such as IP addressing, subnetting, VLAN More ❯

Up to c. £120k Comp Package | Hybrid Working - 3 Days in Office] We’re partnering with a leading global alternative investment firm expanding its Linux support function in London. This is a hands-on role for an ambitious Linux Engineer to support a wide range of teams - trading, infrastructure, security, and systems operations. Operating with significant autonomy … from the UK office, you’ll join a highly technical environment focused on Red Hat Linux, infrastructure automation, identity management, and cross-platform integrations. Prior experience in financial services or similarly regulated, high-stakes environments is strongly preferred, offering exposure to critical business infrastructure, front-to-back office systems, and a clear path for technical growth... Key Responsibilities Provide … day-to-day support and troubleshooting for Red Hat Enterprise Linux (RHEL) systems across multiple business units and technology platforms Monitor incident queues, prioritise requests and address support tickets efficiently, escalating where necessary Deploy, configure, and maintain Linux servers and associated storage, networking, and hardware components Maintain and enhance automation scripts and infrastructure-as-code processes using Ansible More ❯

Up to c. £120k Comp Package | Hybrid Working - 3 Days in Office] We’re working with a leading global alternative investment firm expanding its Linux support function in London. This is an ideal opportunity for someone with 2-3 years’ experience looking to take the next step - building hands-on experience across trading, infrastructure, security, and systems operations. You … ll operate with meaningful autonomy from the UK office, joining a highly technical environment focused on Red Hat Linux systems, infrastructure automation, identity management, and cross-platform integrations. Prior experience in financial services or similarly high-stakes environments is preferred - but not essential. What matters most is the ability to learn on the job, work across diverse teams, and … grow into a broader Linux support and engineering remit with strong potential for long-term progression... Key Responsibilities Provide day-to-day support and troubleshooting for Red Hat Enterprise Linux (RHEL) systems across multiple business units and technology platforms Monitor incident queues, prioritise requests and address support tickets efficiently, escalating where necessary Deploy, configure, and maintain Linux More ❯

Up to c. £120k Comp Package | Hybrid Working - 3 Days in Office] We’re working with a leading global alternative investment firm expanding its Linux support function in London. This is an ideal opportunity for someone with 2-3 years’ experience looking to take the next step - building hands-on experience across trading, infrastructure, security, and systems operations. You … ll operate with meaningful autonomy from the UK office, joining a highly technical environment focused on Red Hat Linux systems, infrastructure automation, identity management, and cross-platform integrations. Prior experience in financial services or similarly high-stakes environments is preferred - but not essential. What matters most is the ability to learn on the job, work across diverse teams, and … grow into a broader Linux support and engineering remit with strong potential for long-term progression... Key Responsibilities Provide day-to-day support and troubleshooting for Red Hat Enterprise Linux (RHEL) systems across multiple business units and technology platforms Monitor incident queues, prioritise requests and address support tickets efficiently, escalating where necessary Deploy, configure, and maintain Linux More ❯

Linux/Wintel Engineer Location: London (On-site) Duration: 6 Months Project : Server and Infrastructure Rebuild Experience:- We are hiring Linux/Windows engineers to assist in the rebuild of core server infrastructure. This role involves deployment, configuration, and support for both Linux and Windows-based systems in a high-availability environment. Key Responsibilities : Install, configure … and support Linux (RedHat/CentOS/Ubuntu) and Windows Server environments. Collaborate on server and service migrations during the infrastructure rebuild. Patch, harden, and secure server instances in line with organizational policies. Support VMware or Hyper-V environments and assist with virtual infrastructure tasks. Work with networking teams to align infrastructure changes with network upgrades. Key Skills Required … 4+ years of experience in system administration (Linux and Windows). Strong troubleshooting skills in both Wintel and Linux platforms. Experience with scripting (Bash/PowerShell) and automation. Familiarity with Active Directory, DNS, DHCP, and Group Policy. Experience with firewalls and network troubleshooting is a plus. More ❯

Linux/Wintel Engineer Location: London (On-site) Duration: 6 Months Project : Server and Infrastructure Rebuild Experience:- We are hiring Linux/Windows engineers to assist in the rebuild of core server infrastructure. This role involves deployment, configuration, and support for both Linux and Windows-based systems in a high-availability environment. Key Responsibilities : Install, configure … and support Linux (RedHat/CentOS/Ubuntu) and Windows Server environments. Collaborate on server and service migrations during the infrastructure rebuild. Patch, harden, and secure server instances in line with organizational policies. Support VMware or Hyper-V environments and assist with virtual infrastructure tasks. Work with networking teams to align infrastructure changes with network upgrades. Key Skills Required … 4+ years of experience in system administration (Linux and Windows). Strong troubleshooting skills in both Wintel and Linux platforms. Experience with scripting (Bash/PowerShell) and automation. Familiarity with Active Directory, DNS, DHCP, and Group Policy. Experience with firewalls and network troubleshooting is a plus. More ❯

Linux/Wintel Engineer – London (On-site) | 6-Month Contract - £400/500 a day (Outside IR35) We’re looking for a versatile Linux/Wintel Engineer to join a major Server & Infrastructure Rebuild project based on-site in London for an initial 6-month contract . If you're experienced in both Linux and … Windows environments and thrive in high-availability, enterprise-scale settings, this is a fantastic opportunity to make an impact. 🛠 What You’ll Be Doing: Deploy, configure, and support Linux (RedHat/CentOS/Ubuntu) and Windows Server environments Collaborate on server and service migrations during a full infrastructure rebuild Apply patches, harden systems, and enforce security policies Support virtual … and assist with virtual infrastructure tasks Work closely with the networking team to ensure seamless infrastructure integration ✅ What We’re Looking For: 4+ years of system administration experience across Linux and Windows platforms Strong troubleshooting skills in both Wintel and Linux environments Experience with scripting and automation ( Bash, PowerShell ) Familiarity with Active Directory, DNS, DHCP , and Group Policy More ❯

Linux/Wintel Engineer – London (On-site) | 6-Month Contract - £400/500 a day (Outside IR35) We’re looking for a versatile Linux/Wintel Engineer to join a major Server & Infrastructure Rebuild project based on-site in London for an initial 6-month contract . If you're experienced in both Linux and … Windows environments and thrive in high-availability, enterprise-scale settings, this is a fantastic opportunity to make an impact. 🛠 What You’ll Be Doing: Deploy, configure, and support Linux (RedHat/CentOS/Ubuntu) and Windows Server environments Collaborate on server and service migrations during a full infrastructure rebuild Apply patches, harden systems, and enforce security policies Support virtual … and assist with virtual infrastructure tasks Work closely with the networking team to ensure seamless infrastructure integration ✅ What We’re Looking For: 4+ years of system administration experience across Linux and Windows platforms Strong troubleshooting skills in both Wintel and Linux environments Experience with scripting and automation ( Bash, PowerShell ) Familiarity with Active Directory, DNS, DHCP , and Group Policy More ❯

Linux Platform Engineer - RedHat - Automation - Ansible, AWX - Python/Bash - Project focussed Hybrid working, 3 days office - London Leading financial services client is looking for a Linux Platform Engineer to join their team on a permanent basis. There is a strong drive for automation, the successful candidate will need to be passionate about this and have More ❯

Linux/Wintel Engineer - Contract Location: London (On-site) Duration: 6 Months Day Rate up to £575 with some flex Project : Server and Infrastructure Rebuild Experience We are working with a leading IT Consultancy who are looking to add a Linux/Wintel to their London based for a 6+ Month project. We are hiring Linux/Windows engineers to assist in the rebuild of core server infrastructure. This role involves deployment, configuration, and support for both Linux and Windows-based systems in a high-availability environment. Key Responsibilities : Install, configure, and support Linux (RedHat/CentOS/Ubuntu) and Windows Server environments. Collaborate on server and service migrations during the infrastructure rebuild. … or Hyper-V environments and assist with virtual infrastructure tasks. Work with networking teams to align infrastructure changes with network upgrades. Key Skills Required: Solid experience in system administration (Linux and Windows). Strong troubleshooting skills in both Wintel and Linux platforms. Experience with scripting (Bash/PowerShell) and automation. Familiarity with Active Directory, DNS, DHCP, and Group More ❯

Linux/Wintel Engineer - Contract Location: London (On-site) Duration: 6 Months Day Rate up to £575 with some flex Project : Server and Infrastructure Rebuild Experience We are working with a leading IT Consultancy who are looking to add a Linux/Wintel to their London based for a 6+ Month project. We are hiring Linux/Windows engineers to assist in the rebuild of core server infrastructure. This role involves deployment, configuration, and support for both Linux and Windows-based systems in a high-availability environment. Key Responsibilities : Install, configure, and support Linux (RedHat/CentOS/Ubuntu) and Windows Server environments. Collaborate on server and service migrations during the infrastructure rebuild. … or Hyper-V environments and assist with virtual infrastructure tasks. Work with networking teams to align infrastructure changes with network upgrades. Key Skills Required: Solid experience in system administration (Linux and Windows). Strong troubleshooting skills in both Wintel and Linux platforms. Experience with scripting (Bash/PowerShell) and automation. Familiarity with Active Directory, DNS, DHCP, and Group More ❯

We're looking for an experienced Linux Engineer to help manage and optimise global server environments supporting high-performance trading and machine learning workloads. This role is about more than just administration - you'll tackle performance tuning, automation, and hands-on data centre troubleshooting. What You'll Do: Design, implement, and maintain Linux server infrastructure Tune Kernel … environments Deploy monitoring and log aggregation tools to improve observability Collaborate with teams to identify bottlenecks and deploy scalable, automated solutions What We're Looking For: 6+ years of Linux system administration and engineering experience in performance-critical environments Proficiency in Python and bash Scripting, with hands-on Ansible experience Solid networking fundamentals: IP Addressing, VLANs, etc. Familiarity with More ❯