AWS Site Reliability Engineer

CompanyCognizant

LocationLondon Area, United Kingdom

Posted At2/19/2026

UK Visa Sponsorship Analytics

Analytics are greyed out due to low classification confidence (33.0%).

Occupation Type

Telecoms and related network installers and repairers

Occupation Code Skill LevelMedium Skilled

Sponsorship Salary Threshold

£41,700 (£21.38 per hour)

Standard minimum applies

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Description

Excellent opportunity for AWS Site Reliability Engineers to be part of our Cloud Infrastructure & Security services practice. Cognizant Infrastructure Services – Provides IT infrastructure & Cloud services for clients across industry verticals, including both Consulting/Professional and Managed Services, across Enterprise Computing, Cloud services, Security Services, DevOps, Data Centres, End User Computing, Service Desk, Network Services and Environment Management Services.

Key Responsibilities:

Design, code, test, and deliver software to automate manual operational work
Troubleshoot priority incidents, facilitate blameless post-mortems and ensure permanent closure of incidents
Collaborate with development team throughout the life cycle to help develop software for reliability and scale, ensuring minimal refactoring or changes
Identify application patterns and analytics in support of better service level objectives
Design self-healing and resiliency patterns
Design automated software and product upgrades, change management, and release management solutions

Collaborate with senior technical leads and mentor junior engineers.

Design, deploy and manage AWS environments with a focus on automation, scalability and security.

Build and maintain Infrastructure as Code(IaC) using tools such as Terraform.

Monitor and optimize system performance, availability, and security, applying observability best practices.

Key Skills and Experience:

Must have Strong Hands-on exposure in AWS, Terraform, Python/Bash, CI/CD
Experience with Infrastructure as code(IaC) and CI/CD(Bitbucket, Jenkins,spinnaker).
Strong knowledge of containerization and orchestration, including Docker and Kubernetes.
Strong scripting skills in Python or Bash for automation.
Proven experience deploying and managing and deep understanding of AWS cloud infrastructure in secure environments.
Working knowledge of infrastructure components (e.g. routers, load balancers, cloud products, container systems, compute, storage, and networks, VPC, subnets and security groups.)
Excellent troubleshooting, problem solving and debugging skills.
Bachelor’s degree or equivalent experience in software engineering discipline

Nice to have skills - Basic knowledge of AI technologies and prompt engineering to leverage generative AI for enhancing productivity and automating tasks.

At Cognizant you will experience an exciting mix of innovation by design, creativity, collaboration, and efficiency within a framework of stimulating objectives and a passion for delivering the best to our customers.

You will be joining a network of some of the most creative, innovative, and dedicated people in the industry with ample opportunities to learn and develop your career.

Our Associates are chosen for their attitude, skills, knowledge, and enthusiasm but above all, their belief that anything is possible.

Cognizant is an equal opportunities employer, and we welcome all applications regardless of race, colour, gender, ethnic origin, nationality, religion or beliefs, disability, age, sexual orientation, political opinions, or trade union membership.