Infrastructure Engineer

Job Description

Purpose of the role

To build and maintain infrastructure platforms and products that support applications and data systems, using hardware, software, networks, and cloud computing platforms as required with the aim of ensuring that the infrastructure is reliable, scalable, and secure.  Ensure the reliability, availability, and scalability of the systems, platforms, and technology through the application of software engineering techniques, automation, and best practices in incident response. 

Accountabilities

• Build Engineering:  Development, delivery, and maintenance of high-quality infrastructure solutions to fulfil business requirements ensuring measurable reliability, performance, availability, and ease of use. Including the identification of the appropriate technologies and solutions to meet business, optimisation, and resourcing requirements.
• Incident Management: Monitoring of IT infrastructure and system performance to measure, identify, address, and resolve any potential issues, vulnerabilities, or outages. Use of data to drive down mean time to resolution.
• Automation:  Development and implementation of automated tasks and processes to improve efficiency and reduce manual intervention, utilising software scripting/coding disciplines.
• Security: Implementation of a secure configuration and measures to protect infrastructure against cyber-attacks, vulnerabilities, and other security threats, including protection of hardware, software, and data from unauthorised access.
• Teamwork:  Cross-functional collaboration with product managers, architects, and other engineers to define IT Infrastructure requirements, devise solutions, and ensure seamless integration and alignment with business objectives via a data driven approach.
• Learning: Stay informed of industry technology trends and innovations, and actively contribute to the organization's technology communities to foster a culture of technical excellence and growth.

Analyst Expectations

• To perform prescribed activities in a timely manner and to a high standard consistently driving continuous improvement.
• Requires in-depth technical knowledge and experience in their assigned area of expertise
• Thorough understanding of the underlying principles and concepts within the area of expertise
• They lead and supervise a team, guiding and supporting professional development, allocating work requirements and coordinating team resources.
• If the position has leadership responsibilities, People Leaders are expected to demonstrate a clear set of leadership behaviours to create an environment for colleagues to thrive and deliver to a consistently excellent standard. The four LEAD behaviours are: L – Listen and be authentic, E – Energise and inspire, A – Align across the enterprise, D – Develop others.
• OR for an individual contributor, they develop technical expertise in work area, acting as an advisor where appropriate.
• Will have an impact on the work of related teams within the area.
• Partner with other functions and business areas.
• Takes responsibility for end results of a team’s operational processing and activities.
• Escalate breaches of policies / procedure appropriately.
• Take responsibility for embedding new policies/ procedures adopted due to risk mitigation.
• Advise and influence decision making within own area of expertise.
• Take ownership for managing risk and strengthening controls in relation to the work you own or contribute to. Deliver your work and areas of responsibility in line with relevant rules, regulation and codes of conduct.
• Maintain and continually build an understanding of how own sub-function integrates with function, alongside knowledge of the organisations products, services and processes within the function.
• Demonstrate understanding of how areas coordinate and contribute to the achievement of the objectives of the organisation sub-function.
• Make evaluative judgements based on the analysis of factual information, paying attention to detail.
• Resolve problems by identifying and selecting solutions through the application of acquired technical experience and will be guided by precedents.
• Guide and persuade team members and communicate complex / sensitive information.
• Act as contact point for stakeholders outside of the immediate function, while building a network of contacts outside team and external to the organisation.

All colleagues will be expected to demonstrate the Barclays Values of Respect, Integrity, Service, Excellence and Stewardship – our moral compass, helping us do what we believe is right. They will also be expected to demonstrate the Barclays Mindset – to Empower, Challenge and Drive – the operating manual for how we behave.

Role Overview

We are looking for an experienced infrastructure Engineer who can build and maintain infrastructure platforms and products that support applications and data systems, using hardware, software, networks, and cloud computing platforms as required with the aim of ensuring that the infrastructure is reliable, scalable, and secure.  Ensure the reliability, availability, and scalability of the systems, platforms, and technology through the application of software engineering techniques, automation, and best practices in incident response. 

You will provide L2/L3 support for infrastructure and application stack  while driving automation, reliability (SRE), and release excellence across environments.

Key Responsibilities

• Build and deliver high-quality infrastructure solutions by using industry aligned programming languages, frameworks, and tools. Ensuring that code is scalable, maintainable, and optimized for performance.
• Deep experience in infrastructure engineering activities, including IAC, automation, design governance and troubleshooting.
• Stay informed of industry technology trends and innovations and actively contribute to the organization’s technology communities to foster a culture of technical excellence and growth.
• Adherence to secure coding practices to mitigate vulnerabilities, protect sensitive data, and ensure secure software solutions.
• To perform assigned activities in a timely manner and to a high standard consistently driving continuous improvement.
• Requires in-depth technical knowledge and experience in Skillset like Terraform, Ansible, Jenkins, Shell script, Datadog, python, API, docker, containers, ECR, EKS and GitLab.
• Build modern CI/CD pipelines, automated testing, security controls and release automation.
• Collaborate closely with Product Owner, Solution Architect, Security, Platform and QA teams to deliver integrated digital solutions.
• Ensure compliance with enterprise security, risk, governance and regulatory requirements.
• Support cross-platform initiatives through working knowledge of iOS development principles and mobile ecosystem standards.
• Foster a culture of collaboration, accountability, continuous improvement, and engineering excellence.
• Support recruitment, onboarding, and team growth initiatives.
• Strong advocate of clean, testable, and maintainable code.

Key Technical Skills and Experience

• Programming language python or Java
• Technical Skills Terraform, Ansible, Jenkins, Shell script, Datadog, docker, containers, GitLab, Snyk, Qualys, Jira, Confluence, Datadog, JUnit, Maven, Gradle, and NPM
• AWS cloud computing EC2, ECR, EKS, S3, Cloud Formation, networks
• Database design and SQL
• Operating System knowledge – Windows, Linux and awareness on AIX
• System design and architecture.
• Experience with OAuth 2.0, OpenID Connect, token exchange, policy systems, delegated administration, or identity data modelling
• Ability to use AI engineering tools to accelerate research, code understanding, prototyping, implementation, and documentation while applying sound engineering judgment
• Experience building production services, distributed systems, or shared platform capabilities
• Experience designing and implementing APIs, RESTful services, integration contracts, and data or domain models
• Experience turning requirements and ambiguous problems into designs, prototypes, and production-ready solutions
• Experience with authentication, authorization, and identity management
• Ability to communicate technical decisions clearly, collaborate across teams and time zones, and support other engineers through feedback and knowledge sharing
• Familiarity with MCP, agent skills, and other agent integration concepts
• Experience contributing to technical designs and proof of concept work
• Manage incidents, problems, and changes using ITIL-aligned processes and SLAs (e.g., ServiceNow/Jira).
• Plan and execute OS patching cycles; maintain compliance with security and audit requirements.
• Maintain comprehensive runbooks, knowledge base articles, and support documentation.
• Very good understanding and solid hands-on on cloud computing system preferably AWS.
• Strong understanding on containers and hands-on experience in EKS/Docker also ability to write and deploy Helm chart.
• Build, maintain, and optimize CI/CD pipelines (GitLab CI/CD, Jenkins, Nexus) to improve release velocity and quality.
• Hands-on experience in Blue-Green deployments and good understanding of various other deployment strategy.