Job Description
Job title:Senior Application Engineer (Digital – AWS, Puppet)
Salary: £60-65kGrade: Band 3
Contract type: TfL Reference: 2766
Contract details: Permanent Location: North Greenwich, London
Application closing date: 9/8/2026 at 23:59
External - All offers of employment are subject to satisfactory right‑to‑work checks. Candidates must be able to demonstrate their right to work in the UK. At the present time TfL is unable to offer visa sponsorship for this role.
*Hybrid working within this role enables a balance of 50 per cent of time split between the office and home over a 4-week period. Hybrid working arrangements can evolve subject to business requirements.
Overview of project/role
The Senior Application Engineer will be accountable for the provision of Level 2 (and where appropriate Level 3) service for TfL's environments in-house developed & managed online services, ensuring that all services are delivered to the agreed standards, quality and performance. Out of Hours support, support of weekend or out of hours maintenance or release activities will be required for certain applications.
Key Accountabilities
- Responsible for executing support activities to enable fault resolution within the agreed SLAs to ensure the restoration of the services within the team’s portfolio
- Responsible for developing and delivering recommendations to resolve critical defects and manage wider implications of system faults to ensure the restoration/improvement of the service
- Assisting in recommending service and process improvements to ensure effective handling and correction of defects in the TfL environments
- Accountable for resolving incidents and fulfilling Service Requests within SLA targets, which are assigned to themselves, or ensuring they are moved to the correct resolver team
- Responsible for Technical Knowledge Management, peer to peer training and knowledge handover to Application Engineers.
- Accountable for assisting Projects and other technical teams to deliver new services / update existing services in their portfolio
- Maintenance of Amazon Web Services (AWS) Infrastructure for TfL Website, API and Journey Planner environments including lifecycle management, update of IaC (Infrastructure as Code) repositories, automation of environment management.
- Maintenance of Identity & Access Management users, policies and permissions within AWS.
- Providing support for development teams in troubleshooting issues & reconfiguration of the development environment
Knowledge
- Working knowledge of agile project management, DevOps methodologies & ITIL Service Management
- Knowledge of current/emerging technologies and processes employed in Enterprise Wide IT services
- Knowledge of two or more of the following
- Working knowledge of solutions development methodologies.
- Preferable: Extensive Industry experience in an Application Support environment
Skills
- Amazon Web Services (AWS) infrastructure administration
- Ability to develop & code in IaC frameworks & languages including Cloudformation, Puppet, Ruby, Perl
- Sophos Unified Threat Management administration
- Windows Server and Linux Server management
- Excellent oral and written communication skills at a business and technical level.
- Highly skilled at solving and communicating complex problems
- Communicates clearly and is skilled at adapting their communication style to meet the needs of the audience.
Experience
- Demonstrable experience of working in a complex multi site environment dealing with business applications and real time implementation systems.
- Proven track record of working in development & operations teams dealing with Cloud Computing, preferably in AWS.
- Experience in infrastructure security management within Cloud environments, preferably AWS
- Experience working in Continuous Integration & Continuous Delivery (CI/CD) practices
- Well developed experience of issues and incident management and working within agreed SLAs.
Application Process
- Please apply using your CV only
- Think