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AWS Platform Engineer

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: Cognizant
Full Time position
Listed on 2026-02-01
Job specializations:
  • IT/Tech
    Systems Engineer
  • Engineering
    Systems Engineer
Salary/Wage Range or Industry Benchmark: 80000 - 100000 GBP Yearly GBP 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Location: Greater London

Overview

This is an excellent opportunity for AWS Platform Engineer professionals to be part of leading-edge technology projects. Cognizant’s Cloud, Infrastructure & Security Services Practice provides end-to-end solutions covering architecture, design, implementation, management, and on-going support across the entire enterprise technology infrastructure. Our services include a spectrum of management, consulting, and systems integration services to help our clients maximize value in their infrastructure resources, while optimizing infrastructure performance and cost.

Key Responsibilities
  • To Implement, and manage AWS VPC components, including subnets, route tables, and gateways (IGW, NAT).
  • Responsible to apply and configure security controls such as Network ACLs, Security Groups, and Private Link.
  • To work with AWS Transit Gateway, Direct Connect, and WAFv2 to manage secure and scalable network architecture.
  • Responsible to automate network configurations using Cloud Formation.
  • Monitor and troubleshoot network issues using tools like Cloud Watch and Datadog.
  • Configure load balancers (ALB, NLB) and DNS management using Route 53.
  • Implement and manage AWS Firewall Manager and Network Firewall.
  • Manage cross-region and cross-account network setups for scalability and security.
  • Ensure proper IAM user and permission management.
  • Collaborate with Dev Ops teams for CI/CD pipeline integrations related to networking.
Key Skills and Experience
  • Deep knowledge of AWS networking services like VPC Endpoints, Elastic IPs, ENI, and hybrid cloud networking (VPN, BGP, peering).
  • Very good experience/knowledge in AWS Control Tower Modernisation
  • Proficiency in automation using Cloud Formation and scripting with Shell/Python.
  • Strong understanding of AWS services like EC2, ELB, ECS, S3, Config, Cloud Trail, EFS, and Lambda.
  • Expertise in cost optimization of AWS networking resources.
Nice to have
  • Experience with Terraform for network configuration automation.
  • Knowledge of Git Hub and Git Hub Actions for version control and CI/CD processes.
  • Familiarity with creating and maintaining documentation and knowledge base articles.
  • Collaboration skills for optimizing network setups in hybrid cloud environments.
  • Understanding of AWS Services like Control Tower for multi-account governance.

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.

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