AWS BAU Engineer

Cognizant; City Of London; On-site; GBP 40,000 - 60,000; Full time

Job summary

A leading IT services provider seeks a Business-as-Usual Engineer to maintain day-to-day IT operations. Responsibilities include system monitoring, incident resolution, and documentation management. The ideal candidate possesses strong technical skills in Linux and AWS services while being capable of communicating technical issues to all levels. The position is based in London and requires participation in an on-call rota.

Qualifications

• Proven experience in IT operations or similar BAU support roles.
• Strong Linux System Administration experience.
• Must have (or be eligible for) SC Clearance.

Responsibilities

• Manage daily BAU operational tasks.
• Troubleshoot and resolve systems issues.
• Ensure adherence to ITSM processes.

Skills

IT operations experience

Linux System Administration

Networking basics

Technical communication

AWS services knowledge

Tools

Datadog

CloudWatch

Ansible

RedHat Satellite

Job description

Overview

We are looking for a Business-as-Usual (BAU) Engineer to join our AWS BAU team and ensure smooth day-to-day operations across our IT environment. The BAU Engineer will be responsible for maintaining systems, addressing incidents, performing routine tasks, and supporting ongoing business operations. This role is ideal for someone with strong technical troubleshooting skills, a proactive mindset, and the ability to balance stability with continuous improvement.

The role also requires participation in an on-call rota (rotational basis) to support business-critical services outside regular hours.

Key Responsibilities

• Manage daily BAU operational tasks, including system monitoring, patching, and incident resolution.
• Troubleshoot and resolve issues across servers, networks, applications, and end-user environments.
• Ensure adherence to SLAs and compliance with IT service management (ITSM) processes.
• Maintain documentation for incidents, changes, and standard operating procedures.
• Work closely with the Service Delivery, Security, and SRE/DevOps teams to ensure seamless handovers and escalations.
• Perform root cause analysis and recommend preventive actions for recurring issues.
• Support scheduled maintenance, upgrades, and capacity planning activities.
• Identify opportunities for process automation and efficiency improvements.
• Shift working Monday-Friday as per project requirements
• Creating and maintaining documentation and knowledge-based articles
• Management of SSL certificates and their renewals
• Monitor the estate using Datadog/CloudWatch and proactively react to alerts.
• Patch management of the estate using tools including RedHat Satellite and Ansible

Skills & Qualifications

• Proven experience in IT operations, system administration, or similar BAU support roles.
• Familiarity with ITIL practices (Incident, Change, Problem Management).
• Strong Linux System Administration experience
• Good grasp of networking basics (DNS, firewalls, load balancers)
• To be able to communicate and articulate technical issues across all levels (i.e., technical team members as well as less-technical management)
• Must have (or be eligible for) SC Clearance
• Strong Knowledge in AWS services EC2, ELB, RDS, ECS, EMR, S3, Config, CloudTrail, EFS, Lambda, VPC, EBS and IAM

Nice-to-Have

• Exposure to SRE/DevOps practices and CI/CD pipelines.
• Experience with security operations (patching, vulnerability management).
• Knowledge of Docker or container-based systems
• Working Knowledge Terraform, GitHub actions and Ansible AWS, RHEL, Terraform certification
• Understanding of network troubleshooting, firewall proxies etc

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.