Senior Application Engineer (Digital - AWS, Puppet)

Job title: Senior Application Engineer (Digital – AWS, Puppet)

Salary: £60-65k
Grade: 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  

1. 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
2. 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
3. Assisting in recommending service and process improvements to ensure effective handling and correction of defects in the TfL environments
4. 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
5. Responsible for Technical Knowledge Management, peer to peer training and knowledge handover to Application Engineers.
6. Accountable for assisting Projects and other technical teams to deliver new services / update existing services in their portfolio
7. 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.
8. Maintenance of Identity & Access Management users, policies and permissions within AWS.
9. 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 carefully about the skills, knowledge and experience in the advert and cover this in your CV
• PDF format preferred and do not include any photographs or images

Equality, diversity and inclusion

We are committed to equality, diversity and inclusion. We want to represent the city we serve, which will help us become a more innovative and efficient organisation. Our goal is to make our recruitment as inclusive as possible. We are a disability confident employer who guarantee an interview to any disabled candidate who meets all of the essential criteria. We also use anonymising software that removes identifying information from CVs and cover letters to make the process fair.
  
Benefits

In return for your commitment and expertise, you will enjoy excellent benefits and scope to grow. Rewards vary according to the level of role but mostly include the below:

• Final salary pension scheme 
• Free travel for you on the TfL network 
• Reimbursement of 75% of the cost of a standard class Ticket for National Rail travel from home
• 30 days annual leave plus public and bank holidays
• TfL is committed to work-life balance, operating a hybrid working approach where business and role requirements allow
• Private healthcare discounted scheme (optional)
• Tax-efficient cycle-to-work programme
• Retail, health, leisure and travel offers 
• Discounted Eurostar travel

We will make every effort to give you as much notice as possible, however some interviews/assessments could be organised at short notice.

Vetting Process

At Transport for London, safety, trust and fairness sit at the heart of how we recruit. Our Vetting Charter (https://tfl.gov.uk/corporate/careers/our-vetting-process) explains the checks we carry out before you join us, helping ensure we create a safe, inclusive and reliable network for everyone who depends on our services. We simply ask that the information you provide is honest and accurate so we can progress your application smoothly. If something doesn’t match or can’t be verified, we may not be able to move forward with your application, but we’ll always treat you with transparency, respect, and clear communication throughout.

We may close this advert early if we receive a high volume of suitable applications.