responsibilities Design, deploy, administer and operate Linux guests running on IBM Z (Linux on Z/LinuxONE) including z/VM and LPAR environments. Manage lifecycle tasks: provisioning, patching, kerneltuning, backups and system upgrades for RHEL/SLES on Z. Implement automation for repeatable operations (Ansible, Terraform, shell/python), CI/CD pipelines for platform-level … Linux on IBM Z or Linux ONE (RHEL/SLES on Z) - strong hands-on experience with z/VM, LPAR management and guest lifecycle. Solid Linux sysadmin skills: kerneltuning, package management, troubleshooting, scripting (bash + Python preferred). Experience with automation tools: Ansible, Terraform or equivalent. Understanding of mainframe hardware/IO concepts (channel subsystem, FICON More ❯
responsibilities Design, deploy, administer and operate Linux guests running on IBM Z (Linux on Z/LinuxONE) including z/VM and LPAR environments. Manage lifecycle tasks: provisioning, patching, kerneltuning, backups and system upgrades for RHEL/SLES on Z. Implement automation for repeatable operations (Ansible, Terraform, shell/python), CI/CD pipelines for platform-level … Linux on IBM Z or Linux ONE (RHEL/SLES on Z) — strong hands-on experience with z/VM, LPAR management and guest lifecycle. Solid Linux sysadmin skills: kerneltuning, package management, troubleshooting, scripting (bash + Python preferred). Experience with automation tools: Ansible, Terraform or equivalent. Understanding of mainframe hardware/IO concepts (channel subsystem, FICON More ❯
responsibilities Design, deploy, administer and operate Linux guests running on IBM Z (Linux on Z/LinuxONE) including z/VM and LPAR environments. Manage lifecycle tasks: provisioning, patching, kerneltuning, backups and system upgrades for RHEL/SLES on Z. Implement automation for repeatable operations (Ansible, Terraform, shell/python), CI/CD pipelines for platform-level … Linux on IBM Z or Linux ONE (RHEL/SLES on Z) — strong hands-on experience with z/VM, LPAR management and guest lifecycle. Solid Linux sysadmin skills: kerneltuning, package management, troubleshooting, scripting (bash + Python preferred). Experience with automation tools: Ansible, Terraform or equivalent. Understanding of mainframe hardware/IO concepts (channel subsystem, FICON More ❯
responsibilities Design, deploy, administer and operate Linux guests running on IBM Z (Linux on Z/LinuxONE) including z/VM and LPAR environments. Manage lifecycle tasks: provisioning, patching, kerneltuning, backups and system upgrades for RHEL/SLES on Z. Implement automation for repeatable operations (Ansible, Terraform, shell/python), CI/CD pipelines for platform-level … Linux on IBM Z or Linux ONE (RHEL/SLES on Z) — strong hands-on experience with z/VM, LPAR management and guest lifecycle. Solid Linux sysadmin skills: kerneltuning, package management, troubleshooting, scripting (bash + Python preferred). Experience with automation tools: Ansible, Terraform or equivalent. Understanding of mainframe hardware/IO concepts (channel subsystem, FICON More ❯
responsibilities Design, deploy, administer and operate Linux guests running on IBM Z (Linux on Z/LinuxONE) including z/VM and LPAR environments. Manage lifecycle tasks: provisioning, patching, kerneltuning, backups and system upgrades for RHEL/SLES on Z. Implement automation for repeatable operations (Ansible, Terraform, shell/python), CI/CD pipelines for platform-level … Linux on IBM Z or Linux ONE (RHEL/SLES on Z) — strong hands-on experience with z/VM, LPAR management and guest lifecycle. Solid Linux sysadmin skills: kerneltuning, package management, troubleshooting, scripting (bash + Python preferred). Experience with automation tools: Ansible, Terraform or equivalent. Understanding of mainframe hardware/IO concepts (channel subsystem, FICON More ❯
london (city of london), south east england, united kingdom
Cognizant
responsibilities Design, deploy, administer and operate Linux guests running on IBM Z (Linux on Z/LinuxONE) including z/VM and LPAR environments. Manage lifecycle tasks: provisioning, patching, kerneltuning, backups and system upgrades for RHEL/SLES on Z. Implement automation for repeatable operations (Ansible, Terraform, shell/python), CI/CD pipelines for platform-level … Linux on IBM Z or Linux ONE (RHEL/SLES on Z) — strong hands-on experience with z/VM, LPAR management and guest lifecycle. Solid Linux sysadmin skills: kerneltuning, package management, troubleshooting, scripting (bash + Python preferred). Experience with automation tools: Ansible, Terraform or equivalent. Understanding of mainframe hardware/IO concepts (channel subsystem, FICON More ❯
optimise large-scale Linux-based platforms for high-performance trading and research workloads. Design and implement workload scheduling, high-performance file systems, and storage operations. Optimise hardware, networking, and kernel performance for low-latency and high-throughput environments . Partner closely with research and infrastructure teams to deliver scalable, reliable solutions. Drive automation using Terraform, Ansible, GitLab, Jenkins , and … trends, conduct POCs, and deliver technical recommendations. What We’re Looking For 10+ years’ experience in Linux systems administration/platform engineering . Proven technical leadership in hardware optimisation, kerneltuning, and network/storage performance . Hands-on experience with DevOps and CI/CD tooling (Terraform, Ansible, GitLab, Jenkins). Programming/scripting knowledge in Python More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Alexander Ash Consulting
optimise large-scale Linux-based platforms for high-performance trading and research workloads. Design and implement workload scheduling, high-performance file systems, and storage operations. Optimise hardware, networking, and kernel performance for low-latency and high-throughput environments . Partner closely with research and infrastructure teams to deliver scalable, reliable solutions. Drive automation using Terraform, Ansible, GitLab, Jenkins , and … trends, conduct POCs, and deliver technical recommendations. What We’re Looking For 10+ years’ experience in Linux systems administration/platform engineering . Proven technical leadership in hardware optimisation, kerneltuning, and network/storage performance . Hands-on experience with DevOps and CI/CD tooling (Terraform, Ansible, GitLab, Jenkins). Programming/scripting knowledge in Python More ❯
london, south east england, united kingdom Hybrid / WFH Options
Alexander Ash Consulting
optimise large-scale Linux-based platforms for high-performance trading and research workloads. Design and implement workload scheduling, high-performance file systems, and storage operations. Optimise hardware, networking, and kernel performance for low-latency and high-throughput environments . Partner closely with research and infrastructure teams to deliver scalable, reliable solutions. Drive automation using Terraform, Ansible, GitLab, Jenkins , and … trends, conduct POCs, and deliver technical recommendations. What We’re Looking For 10+ years’ experience in Linux systems administration/platform engineering . Proven technical leadership in hardware optimisation, kerneltuning, and network/storage performance . Hands-on experience with DevOps and CI/CD tooling (Terraform, Ansible, GitLab, Jenkins). Programming/scripting knowledge in Python More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Alexander Ash Consulting
optimise large-scale Linux-based platforms for high-performance trading and research workloads. Design and implement workload scheduling, high-performance file systems, and storage operations. Optimise hardware, networking, and kernel performance for low-latency and high-throughput environments . Partner closely with research and infrastructure teams to deliver scalable, reliable solutions. Drive automation using Terraform, Ansible, GitLab, Jenkins , and … trends, conduct POCs, and deliver technical recommendations. What We’re Looking For 10+ years’ experience in Linux systems administration/platform engineering . Proven technical leadership in hardware optimisation, kerneltuning, and network/storage performance . Hands-on experience with DevOps and CI/CD tooling (Terraform, Ansible, GitLab, Jenkins). Programming/scripting knowledge in Python More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Alexander Ash Consulting
optimise large-scale Linux-based platforms for high-performance trading and research workloads. Design and implement workload scheduling, high-performance file systems, and storage operations. Optimise hardware, networking, and kernel performance for low-latency and high-throughput environments . Partner closely with research and infrastructure teams to deliver scalable, reliable solutions. Drive automation using Terraform, Ansible, GitLab, Jenkins , and … trends, conduct POCs, and deliver technical recommendations. What We’re Looking For 10+ years’ experience in Linux systems administration/platform engineering . Proven technical leadership in hardware optimisation, kerneltuning, and network/storage performance . Hands-on experience with DevOps and CI/CD tooling (Terraform, Ansible, GitLab, Jenkins). Programming/scripting knowledge in Python More ❯
monitoring, configuration, and incident response workflows Contribute to on-prem colocation expansion projects, introducing low-latency engineering practices into the infrastructure Optimise Linux systems for performance and reliability, including kerneltuning and networking configuration Partner with development and platform teams to embed SRE best practices, reducing manual toil through automation and observability Drive improvements in monitoring, alerting, and … Platform Engineering within production environments Solid experience working with AWS and hybrid infrastructure Proven ability to manage Kubernetes clusters at scale (on-prem or EKS), including configuration and performance tuning Proficiency in Python, Go, or another programming language, with a willingness to code daily Strong Linux engineering skills - comfortable with system internals, troubleshooting, and performance optimisation Knowledge of network More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Techfellow Limited
monitoring, configuration, and incident response workflows Contribute to on-prem colocation expansion projects, introducing low-latency engineering practices into the infrastructure Optimise Linux systems for performance and reliability, including kerneltuning and networking configuration Partner with development and platform teams to embed SRE best practices, reducing manual toil through automation and observability Drive improvements in monitoring, alerting, and … Platform Engineering within production environments Solid experience working with AWS and hybrid infrastructure Proven ability to manage Kubernetes clusters at scale (on-prem or EKS), including configuration and performance tuning Proficiency in Python, Go, or another programming language, with a willingness to code daily Strong Linux engineering skills - comfortable with system internals, troubleshooting, and performance optimisation Knowledge of network More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Techfellow Limited
monitoring, configuration, and incident response workflows Contribute to on-prem colocation expansion projects, introducing low-latency engineering practices into the infrastructure Optimise Linux systems for performance and reliability, including kerneltuning and networking configuration Partner with development and platform teams to embed SRE best practices, reducing manual toil through automation and observability Drive improvements in monitoring, alerting, and … Platform Engineering within production environments Solid experience working with AWS and hybrid infrastructure Proven ability to manage Kubernetes clusters at scale (on-prem or EKS), including configuration and performance tuning Proficiency in Python, Go, or another programming language, with a willingness to code daily Strong Linux engineering skills - comfortable with system internals, troubleshooting, and performance optimisation Knowledge of network More ❯
london, south east england, united kingdom Hybrid / WFH Options
Techfellow Limited
monitoring, configuration, and incident response workflows Contribute to on-prem colocation expansion projects, introducing low-latency engineering practices into the infrastructure Optimise Linux systems for performance and reliability, including kerneltuning and networking configuration Partner with development and platform teams to embed SRE best practices, reducing manual toil through automation and observability Drive improvements in monitoring, alerting, and … Platform Engineering within production environments Solid experience working with AWS and hybrid infrastructure Proven ability to manage Kubernetes clusters at scale (on-prem or EKS), including configuration and performance tuning Proficiency in Python, Go, or another programming language, with a willingness to code daily Strong Linux engineering skills - comfortable with system internals, troubleshooting, and performance optimisation Knowledge of network More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Techfellow Limited
monitoring, configuration, and incident response workflows Contribute to on-prem colocation expansion projects, introducing low-latency engineering practices into the infrastructure Optimise Linux systems for performance and reliability, including kerneltuning and networking configuration Partner with development and platform teams to embed SRE best practices, reducing manual toil through automation and observability Drive improvements in monitoring, alerting, and … Platform Engineering within production environments Solid experience working with AWS and hybrid infrastructure Proven ability to manage Kubernetes clusters at scale (on-prem or EKS), including configuration and performance tuning Proficiency in Python, Go, or another programming language, with a willingness to code daily Strong Linux engineering skills - comfortable with system internals, troubleshooting, and performance optimisation Knowledge of network More ❯
Excellent communication and customer engagement skills. Working knowledge of ML engineering and data science toolchains to optimize user experience. Core Technical Skills System Administration: RHEL/CentOS, Ubuntu, Linux kernel tuning. Automation & Orchestration: Ansible, Kubernetes, container management. GPU & AI Tooling Automation, Monitoring & Security: Experience delivering GPU-as-a-Service with appropriate observability and controls. More ❯
layer: CPU, cache, memory, and network Profile, benchmark, and fine-tune system behaviour under real-world conditions Collaborate with hardware and FPGA engineers on end-to-end architecture design Kernel-level optimization and low-level systems tuning Required: 5+ years developing performance-critical C++ applications (modern C++ standards) Strong systems programming and low-level understanding Expertise in Linux … internals, kerneltuning, and low-level profiling tools Genuine curiosity about hardware behaviour, networking, and system optimization Why Join: Work on systems where nanosecond optimizations have measurable impact Collaborate with world-class engineers across disciplines (software, FPGA, infrastructure) Technology-first culture that values innovation and technical excellence Solve challenging problems at the cutting edge of performance engineering More ❯
layer: CPU, cache, memory, and network Profile, benchmark, and fine-tune system behaviour under real-world conditions Collaborate with hardware and FPGA engineers on end-to-end architecture design Kernel-level optimization and low-level systems tuning Required: 5+ years developing performance-critical C++ applications (modern C++ standards) Strong systems programming and low-level understanding Expertise in Linux … internals, kerneltuning, and low-level profiling tools Genuine curiosity about hardware behaviour, networking, and system optimization Why Join: Work on systems where nanosecond optimizations have measurable impact Collaborate with world-class engineers across disciplines (software, FPGA, infrastructure) Technology-first culture that values innovation and technical excellence Solve challenging problems at the cutting edge of performance engineering More ❯
layer: CPU, cache, memory, and network Profile, benchmark, and fine-tune system behaviour under real-world conditions Collaborate with hardware and FPGA engineers on end-to-end architecture design Kernel-level optimization and low-level systems tuning Required: 5+ years developing performance-critical C++ applications (modern C++ standards) Strong systems programming and low-level understanding Expertise in Linux … internals, kerneltuning, and low-level profiling tools Genuine curiosity about hardware behaviour, networking, and system optimization Why Join: Work on systems where nanosecond optimizations have measurable impact Collaborate with world-class engineers across disciplines (software, FPGA, infrastructure) Technology-first culture that values innovation and technical excellence Solve challenging problems at the cutting edge of performance engineering More ❯
layer: CPU, cache, memory, and network Profile, benchmark, and fine-tune system behaviour under real-world conditions Collaborate with hardware and FPGA engineers on end-to-end architecture design Kernel-level optimization and low-level systems tuning Required: 5+ years developing performance-critical C++ applications (modern C++ standards) Strong systems programming and low-level understanding Expertise in Linux … internals, kerneltuning, and low-level profiling tools Genuine curiosity about hardware behaviour, networking, and system optimization Why Join: Work on systems where nanosecond optimizations have measurable impact Collaborate with world-class engineers across disciplines (software, FPGA, infrastructure) Technology-first culture that values innovation and technical excellence Solve challenging problems at the cutting edge of performance engineering More ❯
london (city of london), south east england, united kingdom
NJF Global Holdings Ltd
layer: CPU, cache, memory, and network Profile, benchmark, and fine-tune system behaviour under real-world conditions Collaborate with hardware and FPGA engineers on end-to-end architecture design Kernel-level optimization and low-level systems tuning Required: 5+ years developing performance-critical C++ applications (modern C++ standards) Strong systems programming and low-level understanding Expertise in Linux … internals, kerneltuning, and low-level profiling tools Genuine curiosity about hardware behaviour, networking, and system optimization Why Join: Work on systems where nanosecond optimizations have measurable impact Collaborate with world-class engineers across disciplines (software, FPGA, infrastructure) Technology-first culture that values innovation and technical excellence Solve challenging problems at the cutting edge of performance engineering More ❯