1,001 to 1,025 of 1,191 High Availability Jobs in the UK

A10 Network Engineer (DV/SC Cleared) We are seeking an experienced A10 Network Engineer for a 6 month contract, inside IR35, supporting high-security environments. You’ll be working on complex network infrastructure, primarily focused on A10 Networks’ Application Delivery Controllers (ADCs) and security solutions. This role demands a hands-on engineer with a solid understanding of high availability, load balancing, and Layer 4-7 traffic management, ideally within secure, mission-critical environments. Key Responsibilities: Configure, deploy, and manage A10 Thunder Series devices (ADC, CGNAT, SSLi, etc.) Perform system integrations, upgrades, and troubleshooting within live network environments Design and implement network solutions tailored for performance, resilience, and security Collaborate with cybersecurity, DevOps, and infrastructure teams to More ❯

A10 Network Engineer (DV/SC Cleared) We are seeking an experienced A10 Network Engineer for a 6 month contract, inside IR35, supporting high-security environments. You’ll be working on complex network infrastructure, primarily focused on A10 Networks’ Application Delivery Controllers (ADCs) and security solutions. This role demands a hands-on engineer with a solid understanding of high availability, load balancing, and Layer 4-7 traffic management, ideally within secure, mission-critical environments. Key Responsibilities: Configure, deploy, and manage A10 Thunder Series devices (ADC, CGNAT, SSLi, etc.) Perform system integrations, upgrades, and troubleshooting within live network environments Design and implement network solutions tailored for performance, resilience, and security Collaborate with cybersecurity, DevOps, and infrastructure teams to More ❯

compliance (SOC2, ISO 27001) Define IaC foundations (Terraform, GitOps, Helm) What We're Looking For: Expert with Kubernetes and Distributed Systems Experience building production infrastructure at scale (multi-region, high-availability) Extensive experience building both on-Prem & Cloud infrastructure at scale from scratch. Strong SRE mindset: SLOs, SLIs, incident response AI-curious or AI-native: excited to build … Development experience (Bonus points for Go(Golang)) Bonus: background in financial systems, core banking, or regulated infra Why join: Huge ownership: build core infra from scratch. Work with a high-caliber team, fast-paced and product-minded founders who have worked in some of the most recognised tech businesses in the world. Help define an open-source platform from … day one. Clear path to tech unicorn status with fruitful equity included. Recently raised 8 figures in funding. If your skillset matches, apply within. Please note: Due to the high volume of applications we are not always able to respond to all applicants, if you have not had a response within 7 days of your application it is likely More ❯

compliance (SOC2, ISO 27001) Define IaC foundations (Terraform, GitOps, Helm) What We're Looking For: Expert with Kubernetes and Distributed Systems Experience building production infrastructure at scale (multi-region, high-availability) Extensive experience building both on-Prem & Cloud infrastructure at scale from scratch. Strong SRE mindset: SLOs, SLIs, incident response AI-curious or AI-native: excited to build … Development experience (Bonus points for Go(Golang)) Bonus: background in financial systems, core banking, or regulated infra Why join: Huge ownership: build core infra from scratch. Work with a high-caliber team, fast-paced and product-minded founders who have worked in some of the most recognised tech businesses in the world. Help define an open-source platform from … day one. Clear path to tech unicorn status with fruitful equity included. Recently raised 8 figures in funding. If your skillset matches, apply within. Please note: Due to the high volume of applications we are not always able to respond to all applicants, if you have not had a response within 7 days of your application it is likely More ❯

compliance (SOC2, ISO 27001) Define IaC foundations (Terraform, GitOps, Helm) What We're Looking For: Expert with Kubernetes and Distributed Systems Experience building production infrastructure at scale (multi-region, high-availability) Extensive experience building both on-Prem & Cloud infrastructure at scale from scratch. Strong SRE mindset: SLOs, SLIs, incident response AI-curious or AI-native: excited to build … Development experience (Bonus points for Go(Golang)) Bonus: background in financial systems, core banking, or regulated infra Why join: Huge ownership: build core infra from scratch. Work with a high-caliber team, fast-paced and product-minded founders who have worked in some of the most recognised tech businesses in the world. Help define an open-source platform from … day one. Clear path to tech unicorn status with fruitful equity included. Recently raised 8 figures in funding. If your skillset matches, apply within. Please note: Due to the high volume of applications we are not always able to respond to all applicants, if you have not had a response within 7 days of your application it is likely More ❯

compliance (SOC2, ISO 27001) Define IaC foundations (Terraform, GitOps, Helm) What We're Looking For: Expert with Kubernetes and Distributed Systems Experience building production infrastructure at scale (multi-region, high-availability) Extensive experience building both on-Prem & Cloud infrastructure at scale from scratch. Strong SRE mindset: SLOs, SLIs, incident response AI-curious or AI-native: excited to build … Development experience (Bonus points for Go(Golang)) Bonus: background in financial systems, core banking, or regulated infra Why join: Huge ownership: build core infra from scratch. Work with a high-caliber team, fast-paced and product-minded founders who have worked in some of the most recognised tech businesses in the world. Help define an open-source platform from … day one. Clear path to tech unicorn status with fruitful equity included. Recently raised 8 figures in funding. If your skillset matches, apply within. Please note: Due to the high volume of applications we are not always able to respond to all applicants, if you have not had a response within 7 days of your application it is likely More ❯

compliance (SOC2, ISO 27001) Define IaC foundations (Terraform, GitOps, Helm) What We're Looking For: Expert with Kubernetes and Distributed Systems Experience building production infrastructure at scale (multi-region, high-availability) Extensive experience building both on-Prem & Cloud infrastructure at scale from scratch. Strong SRE mindset: SLOs, SLIs, incident response AI-curious or AI-native: excited to build … Development experience (Bonus points for Go(Golang)) Bonus: background in financial systems, core banking, or regulated infra Why join: Huge ownership: build core infra from scratch. Work with a high-caliber team, fast-paced and product-minded founders who have worked in some of the most recognised tech businesses in the world. Help define an open-source platform from … day one. Clear path to tech unicorn status with fruitful equity included. Recently raised 8 figures in funding. If your skillset matches, apply within. Please note: Due to the high volume of applications we are not always able to respond to all applicants, if you have not had a response within 7 days of your application it is likely More ❯

compliance (SOC2, ISO 27001) Define IaC foundations (Terraform, GitOps, Helm) What We're Looking For: Expert with Kubernetes and Distributed Systems Experience building production infrastructure at scale (multi-region, high-availability) Extensive experience building both on-Prem & Cloud infrastructure at scale from scratch. Strong SRE mindset: SLOs, SLIs, incident response AI-curious or AI-native: excited to build … Development experience (Bonus points for Go(Golang)) Bonus: background in financial systems, core banking, or regulated infra Why join: Huge ownership: build core infra from scratch. Work with a high-caliber team, fast-paced and product-minded founders who have worked in some of the most recognised tech businesses in the world. Help define an open-source platform from … day one. Clear path to tech unicorn status with fruitful equity included. Recently raised 8 figures in funding. If your skillset matches, apply within. Please note: Due to the high volume of applications we are not always able to respond to all applicants, if you have not had a response within 7 days of your application it is likely More ❯

compliance (SOC2, ISO 27001) Define IaC foundations (Terraform, GitOps, Helm) What We're Looking For: Expert with Kubernetes and Distributed Systems Experience building production infrastructure at scale (multi-region, high-availability) Extensive experience building both on-Prem & Cloud infrastructure at scale from scratch. Strong SRE mindset: SLOs, SLIs, incident response AI-curious or AI-native: excited to build … Development experience (Bonus points for Go(Golang)) Bonus: background in financial systems, core banking, or regulated infra Why join: Huge ownership: build core infra from scratch. Work with a high-caliber team, fast-paced and product-minded founders who have worked in some of the most recognised tech businesses in the world. Help define an open-source platform from … day one. Clear path to tech unicorn status with fruitful equity included. Recently raised 8 figures in funding. If your skillset matches, apply within. Please note: Due to the high volume of applications we are not always able to respond to all applicants, if you have not had a response within 7 days of your application it is likely More ❯

compliance (SOC2, ISO 27001) Define IaC foundations (Terraform, GitOps, Helm) What We're Looking For: Expert with Kubernetes and Distributed Systems Experience building production infrastructure at scale (multi-region, high-availability) Extensive experience building both on-Prem & Cloud infrastructure at scale from scratch. Strong SRE mindset: SLOs, SLIs, incident response AI-curious or AI-native: excited to build … Development experience (Bonus points for Go(Golang)) Bonus: background in financial systems, core banking, or regulated infra Why join: Huge ownership: build core infra from scratch. Work with a high-caliber team, fast-paced and product-minded founders who have worked in some of the most recognised tech businesses in the world. Help define an open-source platform from … day one. Clear path to tech unicorn status with fruitful equity included. Recently raised 8 figures in funding. If your skillset matches, apply within. Please note: Due to the high volume of applications we are not always able to respond to all applicants, if you have not had a response within 7 days of your application it is likely More ❯

compliance (SOC2, ISO 27001) Define IaC foundations (Terraform, GitOps, Helm) What We're Looking For: Expert with Kubernetes and Distributed Systems Experience building production infrastructure at scale (multi-region, high-availability) Extensive experience building both on-Prem & Cloud infrastructure at scale from scratch. Strong SRE mindset: SLOs, SLIs, incident response AI-curious or AI-native: excited to build … Development experience (Bonus points for Go(Golang)) Bonus: background in financial systems, core banking, or regulated infra Why join: Huge ownership: build core infra from scratch. Work with a high-caliber team, fast-paced and product-minded founders who have worked in some of the most recognised tech businesses in the world. Help define an open-source platform from … day one. Clear path to tech unicorn status with fruitful equity included. Recently raised 8 figures in funding. If your skillset matches, apply within. Please note: Due to the high volume of applications we are not always able to respond to all applicants, if you have not had a response within 7 days of your application it is likely More ❯

Global Financial Services/Institutional Asset Management Clearance: Right to work in the UK required A globally recognised financial institution is hiring a Core Networking Specialist to join its high-performance infrastructure team. This firm plays a critical role in global markets, offering integrated investment services to institutional clients and managing trillions in assets. Known for its pioneering work … global operations. This role covers enterprise networking across data centres, campuses, and cloud environments - balancing performance, scale, and resilience in demanding financial settings. Key Responsibilities Design and implement scalable, high-availability network solutions (LAN, WAN, Campus, Cloud). Translate requirements into robust, well-documented architectures. Lead network delivery projects; coordinate with vendors and internal teams. Provide L3 escalation … Arista/Cisco; strong troubleshooting tools (Wireshark, netcat, etc.). Familiar with network security, automation (Python, Ansible), and observability stacks (Prometheus, Grafana). Excellent communicator with experience delivering in high-stakes, collaborative settings. STEM degree and CCNP/CCIE preferred. Why Join? Join a trusted global institution where networking is core to performance. You’ll work on critical infrastructure More ❯

/Network Infrastructure We are seeking an experienced Senior Networking and Connectivity Engineer to join a highly skilled team. This role is critical in designing, implementing, and maintaining secure, high-performance network infrastructures across multiple environments. The ideal candidate will have deep expertise in Internet Protocol (IP) networking and hands-on experience with Next-Generation Firewalls (NGFW) from multiple … This is a 24/7 operational environment requiring a 4 on/4 off shift pattern , including night shifts . Design, deploy, and manage enterprise network solutions, ensuring high availability and security. Configure, maintain, and troubleshoot NGFW platforms including Fortinet FortiGate, Palo Alto Networks, Juniper, and/or Cisco Firepower . Monitor network performance, identify bottlenecks, and More ❯

About the Role We are seeking an experienced Senior Networking and Connectivity Engineer to join a highly skilled team. This role is critical in designing, implementing, and maintaining secure, high-performance network infrastructures across multiple environments. The ideal candidate will have deep expertise in Internet Protocol (IP) networking and hands-on experience with Next-Generation Firewalls (NGFW) from multiple … a 24/7 operational environment requiring a 4 on/4 off shift pattern , including night shifts . Key Responsibilities Design, deploy, and manage enterprise network solutions, ensuring high availability and security. Configure, maintain, and troubleshoot NGFW platforms including Fortinet FortiGate, Palo Alto Networks, Juniper, and/or Cisco Firepower . Implement and optimise routing, switching, and More ❯

About the Role We are seeking an experienced Senior Networking and Connectivity Engineer to join a highly skilled team. This role is critical in designing, implementing, and maintaining secure, high-performance network infrastructures across multiple environments. The ideal candidate will have deep expertise in Internet Protocol (IP) networking and hands-on experience with Next-Generation Firewalls (NGFW) from multiple … a 24/7 operational environment requiring a 4 on/4 off shift pattern , including night shifts . Key Responsibilities Design, deploy, and manage enterprise network solutions, ensuring high availability and security. Configure, maintain, and troubleshoot NGFW platforms including Fortinet FortiGate, Palo Alto Networks, Juniper, and/or Cisco Firepower . Implement and optimise routing, switching, and More ❯

and when required. MUST be eligible for UK Government Security Clearance. We’re seeking an experienced Senior Cyber Architect to join a fast-paced consulting engagement within a complex, high-impact technology environment. This isn’t a purely advisory position; it’s for someone who can design, build, and implement secure solutions across on-premise, cloud, and hybrid infrastructures … and technical solutions. Designing and delivering security architecture across hybrid, cloud, and on-premises environments. Navigating complex technical ecosystems that span operational tech, cloud, and on-premise systems. Producing high-quality deliverables, from threat models and risk assessments to secure architecture blueprints. Collaborating with cross-functional teams and clients, translating technical detail into business language. Partnering with client teams … or other hands-on technical roles. Excellent communication skills to engage both technical and non-technical audiences. Adaptability to work across varied industries and technologies. Experience in regulated or high-availability environments (e.g., aviation, manufacturing, critical infrastructure) is advantageous but not essential. Desirable certifications: CISSP, CISM, or CISA. SABSA, TOGAF, or other architecture certifications. ISO 27001 Lead Auditor More ❯

and when required. MUST be eligible for UK Government Security Clearance. We’re seeking an experienced Senior Cyber Architect to join a fast-paced consulting engagement within a complex, high-impact technology environment. This isn’t a purely advisory position; it’s for someone who can design, build, and implement secure solutions across on-premise, cloud, and hybrid infrastructures … and technical solutions. Designing and delivering security architecture across hybrid, cloud, and on-premises environments. Navigating complex technical ecosystems that span operational tech, cloud, and on-premise systems. Producing high-quality deliverables, from threat models and risk assessments to secure architecture blueprints. Collaborating with cross-functional teams and clients, translating technical detail into business language. Partnering with client teams … or other hands-on technical roles. Excellent communication skills to engage both technical and non-technical audiences. Adaptability to work across varied industries and technologies. Experience in regulated or high-availability environments (e.g., aviation, manufacturing, critical infrastructure) is advantageous but not essential. Desirable certifications: CISSP, CISM, or CISA. SABSA, TOGAF, or other architecture certifications. ISO 27001 Lead Auditor More ❯

and when required. MUST be eligible for UK Government Security Clearance. We’re seeking an experienced Senior Cyber Architect to join a fast-paced consulting engagement within a complex, high-impact technology environment. This isn’t a purely advisory position; it’s for someone who can design, build, and implement secure solutions across on-premise, cloud, and hybrid infrastructures … and technical solutions. Designing and delivering security architecture across hybrid, cloud, and on-premises environments. Navigating complex technical ecosystems that span operational tech, cloud, and on-premise systems. Producing high-quality deliverables, from threat models and risk assessments to secure architecture blueprints. Collaborating with cross-functional teams and clients, translating technical detail into business language. Partnering with client teams … or other hands-on technical roles. Excellent communication skills to engage both technical and non-technical audiences. Adaptability to work across varied industries and technologies. Experience in regulated or high-availability environments (e.g., aviation, manufacturing, critical infrastructure) is advantageous but not essential. Desirable certifications: CISSP, CISM, or CISA. SABSA, TOGAF, or other architecture certifications. ISO 27001 Lead Auditor More ❯

and when required. MUST be eligible for UK Government Security Clearance. We’re seeking an experienced Senior Cyber Architect to join a fast-paced consulting engagement within a complex, high-impact technology environment. This isn’t a purely advisory position; it’s for someone who can design, build, and implement secure solutions across on-premise, cloud, and hybrid infrastructures … and technical solutions. Designing and delivering security architecture across hybrid, cloud, and on-premises environments. Navigating complex technical ecosystems that span operational tech, cloud, and on-premise systems. Producing high-quality deliverables, from threat models and risk assessments to secure architecture blueprints. Collaborating with cross-functional teams and clients, translating technical detail into business language. Partnering with client teams … or other hands-on technical roles. Excellent communication skills to engage both technical and non-technical audiences. Adaptability to work across varied industries and technologies. Experience in regulated or high-availability environments (e.g., aviation, manufacturing, critical infrastructure) is advantageous but not essential. Desirable certifications: CISSP, CISM, or CISA. SABSA, TOGAF, or other architecture certifications. ISO 27001 Lead Auditor More ❯

and when required. MUST be eligible for UK Government Security Clearance. We’re seeking an experienced Senior Cyber Architect to join a fast-paced consulting engagement within a complex, high-impact technology environment. This isn’t a purely advisory position; it’s for someone who can design, build, and implement secure solutions across on-premise, cloud, and hybrid infrastructures … and technical solutions. Designing and delivering security architecture across hybrid, cloud, and on-premises environments. Navigating complex technical ecosystems that span operational tech, cloud, and on-premise systems. Producing high-quality deliverables, from threat models and risk assessments to secure architecture blueprints. Collaborating with cross-functional teams and clients, translating technical detail into business language. Partnering with client teams … or other hands-on technical roles. Excellent communication skills to engage both technical and non-technical audiences. Adaptability to work across varied industries and technologies. Experience in regulated or high-availability environments (e.g., aviation, manufacturing, critical infrastructure) is advantageous but not essential. Desirable certifications: CISSP, CISM, or CISA. SABSA, TOGAF, or other architecture certifications. ISO 27001 Lead Auditor More ❯

and when required. MUST be eligible for UK Government Security Clearance. We’re seeking an experienced Senior Cyber Architect to join a fast-paced consulting engagement within a complex, high-impact technology environment. This isn’t a purely advisory position; it’s for someone who can design, build, and implement secure solutions across on-premise, cloud, and hybrid infrastructures … and technical solutions. Designing and delivering security architecture across hybrid, cloud, and on-premises environments. Navigating complex technical ecosystems that span operational tech, cloud, and on-premise systems. Producing high-quality deliverables, from threat models and risk assessments to secure architecture blueprints. Collaborating with cross-functional teams and clients, translating technical detail into business language. Partnering with client teams … or other hands-on technical roles. Excellent communication skills to engage both technical and non-technical audiences. Adaptability to work across varied industries and technologies. Experience in regulated or high-availability environments (e.g., aviation, manufacturing, critical infrastructure) is advantageous but not essential. Desirable certifications: CISSP, CISM, or CISA. SABSA, TOGAF, or other architecture certifications. ISO 27001 Lead Auditor More ❯

Remote | Up to £60,000 + 15% Bonus Work Arrangement: Fully Remote Are you a skilled Java Developer ready to take on complex technical challenges in a fast-paced, high-performance environment? Join a leading technology business powering global-scale platforms and systems that handle millions of data transactions daily. What You’ll Do: Develop and maintain secure, high-availability Java systems supporting regulatory and compliance functions. Work with advanced cryptography including authentication, digital signatures, encryption, and time stamping. Design, build, and maintain solutions processing large-scale data for multiple international markets. Analyse and troubleshoot system performance, stability, and security issues. Collaborate with technical experts across multiple teams to deliver high-quality, compliant solutions. Contribute to … large-scale, mission-critical systems used globally. A culture that encourages creativity, innovation, and personal growth. Supportive environment with ongoing professional development opportunities. If you’re ready to build high-impact Java systems and work with some of the brightest minds in technology, we’d love to hear from you More ❯

Remote | Up to £60,000 + 15% Bonus Work Arrangement: Fully Remote Are you a skilled Java Developer ready to take on complex technical challenges in a fast-paced, high-performance environment? Join a leading technology business powering global-scale platforms and systems that handle millions of data transactions daily. What You’ll Do: Develop and maintain secure, high-availability Java systems supporting regulatory and compliance functions. Work with advanced cryptography including authentication, digital signatures, encryption, and time stamping. Design, build, and maintain solutions processing large-scale data for multiple international markets. Analyse and troubleshoot system performance, stability, and security issues. Collaborate with technical experts across multiple teams to deliver high-quality, compliant solutions. Contribute to … large-scale, mission-critical systems used globally. A culture that encourages creativity, innovation, and personal growth. Supportive environment with ongoing professional development opportunities. If you’re ready to build high-impact Java systems and work with some of the brightest minds in technology, we’d love to hear from you More ❯

will be required to work in the office 1 day per month ; otherwise, you will be working remotely . The candidate will be responsible for implementing, maintaining, and tuning high-traffic, multiple database applications as well as migrating existing SQL Server databases. Behavioural Competency: You will have the ability to understand the business in terms of how the data … optimal and performant conditions . As a Senior MySQL Developer/DBA, you should be comfortable working with a variety of implementations and be used to working within a high-availability business that operates on a 24/7/365 schedule. Experience working as a MySQL DBA and developer Experience working with and managing database server configurations … analysis tools (Elasticsearch, Rollbar Sentry) Solid understanding of architectural design choices (Heap, MyISAM, INNO DB etc) Experience writing performant queries and procedures to ensure optimal solutions Experience working with high-traffic, responsive environments and applications to ensure the performance, security, and availability of databases. Knowledge and experience with data security best practices Application of software development best practices More ❯

We’re working with an early-stage technology company building foundational software for complex, real-world systems. This is a hands-on engineering role with high ownership — you’ll design, build and deploy core components that power mission-critical applications across a range of operational environments. What you’ll do Build and maintain low-latency, reliable software for backend … real-time systems, robotics, or embedded integrations. Familiarity with containerisation, CI/CD, and cloud or on-prem deployment workflows. Background in building reliable software for mission-critical or high-availability contexts. Why apply Join early and have a direct impact — influence architecture, practices and product direction. Work in an engineering-first culture with autonomy and clear ownership. More ❯