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# Senior Application Engineer

- **Company:** Transport for London
- **Location:** UK
- **Experience:** Expert
- **Salary:** £55,000.0 - £65,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Application Programming Interfaces (APIs), Agile Methodology, Amazon Web Services, Microsoft Azure, Business Software, C Sharp (Programming Language), Content Delivery Networks, Cloud Computing, Continuous Integration, DevOps, Domain Name System (DNS), Identity and Access Management, Integrated Development Environments, Linux System Administration, Online Service Provider, YAML, Cloud Platform System, ReactJS, Cloudformation, Information Technology, Google Cloud Functions, Bicep, Cloudflare, Puppet
- **Published:** October 19, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=8fc4a3775c3550de

## About the Role

* 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

Essential:

 * Azure (App Services, Function Apps) administration
 * Deployments using AzureDevOps
 * Content Management System administration
 * DNS & Content Delivery Network administration (Cloudflare preferred)
 * Windows & Linux administration

Beneficial:

 * AWS administration
 * C#
 * React
 * Bicep/YAML
 * Puppet & Cloudformation, * 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.

## Description

Internal - All offers of employment are subject to satisfactory right-to-work checks, and candidates must be able to demonstrate their legal right to work in the UK. In certain circumstances, TfL may be able to sponsor Skilled Worker visas for roles and individuals that meet the required eligibility criteria, including those covered by transitional rules. Further details can be found here: Our response to visa sponsorship changes.

 * 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., 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