6 Months Contract + with possible extension

550 a day inside IR35

London Based - 2 days in the office

Active SC Clearance is Needed

A well established IT Provider is looking for an experienced Linux Engineer / Architect with a proven track record of designing, building, and maintaining mission-critical enterprise platforms to join their IT Team on a 6 months contract. You will be at the heart of their infrastructure strategy, responsible for the high-end troubleshooting, security hardening, and automation of our global server estate.

This is a role for a technical heavyweight who thrives on solving complex root-cause issues and enjoys the architectural challenge of ensuring 24/7 availability for high-traffic environments.

Key Responsibilities

• Provide expert-level guidance to engineering teams and lead root-cause analysis on complex system-wide issues.
• Linux Engineering: Manage and optimise a large-scale estate across RedHat, Ubuntu, and CentOS, ensuring peak performance of Apache, Nginx, and Tomcat stacks.
• Automation & IaC: Drive efficiency through the development of custom Ansible, Puppet, and Terraform scripts to automate deployments and server hardening.
• Security & Compliance: Lead server hardening initiatives and vulnerability mitigation, ensuring our infrastructure meets rigorous industry standards (including ISO27001 or MOD restricted requirements).
• Infrastructure Design: Produce High-Level and Low-Level Design (HLD/LLD) documentation for monitoring suites and hybrid cloud integrations.
• Network & Storage: Configure and troubleshoot advanced networking (DNS, VIP, Load Balancing) and manage enterprise-grade storage solutions (SAN/NAS).

The Successful candidate should have the following essential skills

• A minimum of 11 years of deep Linux experience (20+ years preferred)
• Advanced proficiency in Bash and Python, with the ability to write bespoke tools to improve system efficiency.
• Practical experience with AWS or Azure migrations and managing virtualised environments via VMware.

6 Months Contract + with possible extension 550 a day inside IR35

London Based - 2 days in the office

Active SC Clearance is Needed

If you are an experienced Linux Engineer with a background that matches the above then I want to hear from you. If this seems of interest to you then please apply directly to the AD or send your CV to (url removed)

Randstad Technologies is acting as an Employment Business in relation to this vacancy.

Junior Site Reliability Engineer – Bath / Hybrid - £35,000 - £45,000

A great opportunity for a Junior Site Reliability Engineer to join an organisation who will be transitioning towards a DevOps environment, and pick up relevant skills along the way.

The role will be joining a leading software house in central Bath, building and maintaining infrastructure for their SaaS products. They are in the process of investing heavily in their technical environment and are looking for an engineer who can help with new tech implementations.

Core responsibilities will include:

• Maintaining hosting infrastructure (ensuring availability of web, database and messaging systems)
• Managing servers (across development, test and production)
• Monitor respond to infrastructure events (such as availability and capacity management)
• Be proactive with infrastructure upgrades

Does this sound like you?

• Experience managing servers in the cloud
• Proactive, not reactive
• Production systems awareness
• Possibly a graduate with a placement year / some relevant experience, or someone working in a support / infrastructure position

The technical environment looks like this:

• AWS cloud infrastructure (AWS experience would be ideal but Azure / GCP also considered)
• Majority Windows / some Linux servers
• NginX, IIS, virtualisation, web services
• Active Directory / DNS / DHCP etc.
• MS SQL Server
• PowerShell

They will be moving towards working with Infrastructure as a Code (Terraform) and containerisation (Docker); they would either be looking for some previous experience or a desire to learn.

Some of the benefits you can expect include:

• Hybrid working (3 days remote, 2 days in central Bath)
• Private medical insurance
• Life insurance
• Annual performance reviews
• Bonus scheme
• 25 days holiday (increases with service) plus buy/sell options
• Generous pension scheme (employer up to 8%)
• Relocation assistance
• Budget for training and development

As a PHP Engineer you will be a key contributor within a cross-functional engineering squad, responsible for building secure, scalable, and high-quality software with an increasing emphasis on AI-driven capabilities and intelligent agent development. You will work closely with Senior Engineers, the Engineering Team Leader, and the Architect to implement modern engineering practices, integrate AI models and agent patterns, and contribute to the evolution of our cloud-native services. You will already have strong software development experience and have a desire to grow deeper into engineering, while maintaining strong software craftsmanship and delivery discipline.

As we move toward an AI-first engineering strategy with multiple autonomous squads, the Software Engineer plays a vital role in delivering reliable, secure, and modern software while developing skills that contribute to our ecosystem. You will help implement AI capabilities, support cloud-native services, and strengthen the squad’s engineering excellence as we scale.

Key Responsibilities

Software Development & Delivery:

• Design, build, test, and maintain high-quality software components and services across backend, frontend, or full-stack environments.
• Utilise AI Accelerated development tools across the SSDLC to accelerate delivery and product quality.
• Write clean, maintainable, secure code following engineering standards and SSDLC best practices.
• Participate actively in backlog refinement, sprint planning, story estimation, and team ceremonies.

AI Integration & Emerging Skills Development:

• Champion AI Enablement initiatives by embedding AI thinking into product design and delivery, enabling teams to leverage AI, and emerging technologies to enhance functionality, automation, and user experience.
• Use vector databases, embeddings, and retrieval pipelines with support from senior engineers.
• Contribute to building robust tests and evaluation checks for AI behaviours and outputs.
• Follow architectural guidance to ensure AI features remain safe, secure, and reliable.

Quality Engineering & Secure Development:

• Create automated tests, including unit, integration, and functional tests.
• Apply secure-by-design principles in all coding activities, participating in threat modelling where appropriate.
• Contribute to code reviews and continuously improve code quality within the squad.
• Maintain documentation for services, features, and reusable components.

Cloud-Native Engineering & DevOps Practices:

• Deploy and maintain services using CI/CD pipelines.
• Instrument code for observability, logging, and performance insights.
• Participate in incident resolution and root-cause analysis for issues within the squad’s domain.
• Follow best practices for cloud development, working across AWS or Azure environments.

Collaboration & Team Contribution:

• Work closely with Senior Engineers and the Engineering Team Leader to confirm technical designs and implementation details.
• Collaborate with Product Owners to understand requirements and propose feasible approaches.
• Communicate progress, blockers, and technical details clearly within the squad.
• Participate in continuous improvement initiatives and share learnings with peers.
• Experience as a software engineer within modern cloud-native environments.
• Strong development skills in at least one of the following languages/frameworks: C# .NET, Nodejs, Reactjs, Python, React
• Understanding of AI First development and deployment processes.
• Experience building REST APIs, microservices, or modern frontend applications.
• Good grasp of secure coding, testing strategies, and CI/CD pipelines.
• Work collaboratively in an Agile squad with a focus on quality, delivery, self-reflection and improvement.
• Strong problem-solving skills and willingness to learn and adopt emerging AI and agent technologies.
• Hands-on experience with vector databases, embeddings, or prompt engineering.
• Understanding of AI fundamentals and experience using LLM APIs or AI-enhanced features and Agents.
• Experience with cloud services such as AWS, Azure, or serverless platforms.
• Interest in distributed systems, event-driven architectures, or DDD concepts.
• Familiarity with observability tooling and debugging complex systems.

Skills & Experience

• Proven experience as a software engineer in a modern development environment, including agentic approaches.
• Strong experience with PHP (5x, 7x, 8x), including Laravel.
• Experience with frameworks such as React, Vue, or Node and C#
• Solid understanding of MySQL, including indexing and query optimisation.
• Experience with API development and system integrations.
• Proficiency with Git-based version control and package management tools (e.g. Composer, NPM).
• Experience working with Azure DevOps and CI/CD pipelines.
• Excellent written and verbal communication skills.
• Understanding of object-oriented programming principles.
• Experience operating Linux-based web servers (LAMP / Nginx).
• Experience with SASS / LESS / SCSS.
• Exposure to SQL and NoSQL database technologies.
• Experience with mobile application development.
• Awareness of UX / UI principles and responsive design.

Location : Reading

NO Visa sponsorship

Eligibility :ILR/Citizen/Dependent/Settled

Domain : Telecom

Job summary :

• Worked for large-scale, mission critical environments in Telecom domain.
• Implement service mesh architectures using Istio for traffic management, security, and observability.
• Lead incident response, root cause analysis, and continuous improvement activities.

Core application skills as a platform engineer:

• OpenShift, Kubernetes, Prometheus, Grafana, RabbitMQ, Redis, MongoDB, PostgreSQL, NGINX and F5 load balancers, VMware vSphere, HashiCorp Vault, Keycloak, ArgoCD, Helm Charts, SonarQube, Snyk.
• Implement object storage platforms using S3-compatible storage and MinIO.
• Setting up Apache Airflow, Cisco NSO, Itential at platform level.
• Develop, test and maintain backup and disaster recovery strategies.
• DevOps, CI/CD development and DevSecOps tooling.

Foundational Skills:

• Linux, Networking (TCP/IP, DNS, load balancing), Python, Ansible, Bash, Gitlab, REST APIs, microservices architecture.

Description

Senior DevOps Engineer

Programme Name: LCST

Location: Remote, with attendance at Leidos UK Bristol or Customer sites as required

We’re ready for you to unleash your potential!

Role Overview:

We are seeking an experienced hands-on Senior DevOps Engineer to join the LCST Programme team. As part of a high-performing Agile team, you will design, implement, and support secure, scalable cloud infrastructure using a tailored SAFe Agile SecDevOps Scrum process. You’ll apply DevOps best practices and cloud-native design principles, leveraging AWS services and Infrastructure as Code (IaC) to drive automation and continuous delivery across environments.

This role also includes hands-on work with automated testing, deployments, and infrastructure monitoring—alongside participation in Agile ceremonies, risk mitigation activities, and collaborative solution design. Cross-functional flexibility across systems engineering, software development, testing, and security is highly valued.

Key Responsibilities:

• Demonstrated experience in managing source code with GIT, including pull requests, branching strategies (Trunk-based, GitFlow), and collaborative version control workflows
• Expertise in designing and managing AWS cloud infrastructure, including services like EC2, ECR, ECS, ECK, ASG, VPC, RDS, Load Balancers, Lambda, IAM, ports, R53 etc
• Strong proficiency in IAC using Terraform and Ansible to provision, configure, and maintain secure and scalable cloud environments
• Experience building and maintaining CI/CD pipelines using Jenkins, implementing automation for building, testing, and deploying applications across multiple environments
• Proven ability to write and maintain scripts and automation tools using Bash, Python, and PowerShell to enhance operational workflows and eliminate manual tasks
• Familiarity with containerisation using Docker and orchestration best practices, along with configuration management using Ansible.
• Knowledge of secrets management and access control using tools like Vault and IAM policies, ensuring secure handling of credentials and sensitive information
• Strong understanding of AWS security best practices, including encryption, patching, monitoring, least privilege access, and compliance requirements.
• Hands-on experience in implementing and managing backup, recovery, and disaster recovery strategies to ensure data protection and business continuity]
• Ability to implement robust monitoring and logging solutions e.g., CloudWatch, to ensure system reliability, observability, and proactive incident response
• Comfortable working in Agile development teams, translating business requirements into technical solutions, and actively participating in sprint planning, retrospectives, and daily stand-ups
• Capability to design scalable, resilient, and cost-effective cloud-native solutions that meet availability and performance objectives
• Strong troubleshooting and problem-solving skills with the ability to identify root causes and implement effective mitigation strategies in complex environments
• Understanding of routing, traffic management, and load balancing, including configuration of NGINX and AWS-native tools for optimizing traffic flow.
• Experience with structured release and change management processes, including deployment governance, rollback strategies, and versioning control.
• Awareness of Java application environments and deployment considerations is a plus for supporting platform-wide consistency and integrations
• Proactive mindset with a continuous improvement attitude, regularly identifying opportunities to enhance delivery pipelines, infrastructure, and development practices
• Proficiency in designing and managing SNS topics for event-driven architectures, integrating notifications with Lambda, or external systems to support decoupled and scalable cloud workflows
• Hands-on experience using Atlassian tools such as Jira, Confluence and Bitbucket to support Agile delivery, documentation, collaboration, and CI/CD pipeline management
• Working knowledge of Active Directory and ADFS for identity and access management, including group policy management, SSO, and integration with cloud authentication services

Application Requirements:

• Hands-on experience:
  • in any programming language e.g. python, bash, powershell, etc
  • in Redhat OS
  • in AWS OR Azure OR any other cloud provider
  • as Redhat and windows Admin
  • in containerised solution
  • in supporting application troubleshooting
  • IAC – terraform
  • App config - ansible or any other like puppet
  • CI/CD pipeline like Jenkins or Azure devops or bamboo, etc
  • Any Automation

Desired Skills:

• AWS Certified DevOps Engineer – Professional or equivalent certification
• Proficiency in Terraform, AWS CDK, or CloudFormation
• Experience with Ansible for configuration management
• Strong scripting skills (e.g., Python, PowerShell, Bash)
• ITIL Foundation Certification or experience with ITIL-based environments

Interview Requirements:

• This role will involve a two-stage interview process:
  • First stage: face to face video competency-based interview covering your experience and transferable skills/application requirements into the role
  • Second stage: face to face in person interview at our Bristol office, this will include a technical test aligned around the application requirement capabilities

Clearance Requirements:

• Clearance to Start BPSS
• Clearance for Role SC
• Must be a UK Citizen and based in UK for the duration
• Must have, or be able to obtain, a UK SC Clearance

Clearance Requirements:

• BPSS pre-screening required to start

​​

Leidos UK! Join our team and discover a culture of collaboration, innovation, diversity, trust, caring management, communication transparency, work-life balance, and overall job satisfaction…

What we do for you:
At Leidos we are PASSIONATE about customer success, UNITED as a team and INSPIRED to make a difference. We offer meaningful and engaging careers, a collaborative culture, and support for your career goals, all while nurturing a healthy work-life balance.
We provide an employment package that attracts, develops and retains only the best in talent. Our reward scheme includes:
•    Contributory Pension Scheme
•    Private Medical Insurance
•    33 days Annual Leave (including public and privilege holidays)
•    Access to Flexible benefits (including life assurance, health schemes, gym memberships, annual buy and sell holidays and a cycle to work scheme)

•   Flexible Working Scheme

Commitment to Diversity:

We welcome applications from every part of the community and are committed to a truly diverse and inclusive culture.  We foster a sense of belonging, welcoming all perspectives and contributions, and providing equal access to opportunities and resources for everyone.  If you have a disability or need any reasonable adjustments during the application and selection stages please let us know, and we will respond in a way that best fits your needs.

Who We Are:

The Logistics Commodities & Services Transformation (LCST) Programme for the UK Ministry of Defence is a critical effort to enhance and improve the UK’s defence supply chain. The programme provides essential services such as storage and distribution for the MOD’s materiel, including a global freight service and the procurement and inventory management of 70,000 commodity NATO Stock Number (NSNs).

Working together as Team Leidos we are helping to transform the UK’s defence supply chain by providing an integration of a complex mixture of services, at low risk, using a modern suite of systems that will deliver one version of the truth. For the first time, the MOD will see the whole picture, as it is happening.

What Makes Us Different:

Purpose: you can use your passion and abilities at Leidos to keep the people you care about safe. We are at the forefront of machine learning, AI, cyber security and solutions. Using your skills in the technology frontline by helping to build a safer world.  You can inspire change.

Collaboration: having flexibility to do your job is one of our core benefits, enabling you to become part of our extraordinary team.  We have been empowering our people to work flexibly for years.  Whether you work from home, the office or on customer sites, we will give you the digital tools and the flexibility to work smarter and align your needs and ours.

People: Leidos empowers people from every background to be themselves and gives you the tools to learn new skills by enabling growth whilst developing. We believe that extraordinary people need opportunities to grow, to be inspired and to inspire others. At Leidos, we invest in technical academies, career rotations and a career development plans that enhance your future.

If you’re looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We’re not hiring followers. We’re recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We’re already at step 30 — and moving faster than anyone else dares.

Original Posting:

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

£47,600.00-£61,000.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That’s why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

#Remote

Linux, AWS, scripting, Infrastructure, Full Time Strong commercial Linux experience with extensive AWS. This is a hands-on infrastructure role at the heart of a thriving technology team in Crewe, reporting to the Head of Infrastructure and working shoulder-to-shoulder with Software Development and DevOps colleagues to keep critical systems performing at their best. *Minimum 3 days per week onsite in Crewe, with access to a modern purpose-built campus, gym, cafe, barista bar, changing rooms, and plenty of breakout space. breakfast is included.* What you'll own -Primary support & maintenance of the Linux estate -AWS infrastructure support across EC2, ECS, Lambda and more -Automating builds, scaling, monitoring and patching -Collaborating with Dev & DevOps on infrastructure needs -Identifying improvements to efficiency and service quality -Documenting systems & upholding security standards Your toolkit Linux Ubuntu Apache, PHP, MySQL, PostgreSQL, Nginx, PostfixGit AWS EC2, ECS, Lambda, VPC, Route53, S3RDS, CloudWatch CloudFormation Automation & config Puppet, Ansible, Terraform, scripting langs Python/Bash It security Please note: the successful candidate will be required to undergo an NPPV Level 3 vetting check as part of the onboarding process.