RTX
Principle Site Reliability Engineer
Remote Site Reliability Engineering role with clear candidate location fit.
PostedJun 18, 2026
Eligible countries1 accepted country
Seniority signalSenior
Work settingRemote
Accepted candidate locations
United Kingdom
Role overview
Principle Site Reliability Engineer
Requirements and responsibilities
Readable role content extracted into sections for faster review.
Position Role Type:
- YOU will own one or more AWS hosted infrastructures delivering products to our commercial customers in a B2B model.
- YOU will manage, enhance, and troubleshoot our AWS environments, ensuring that as we develop new features, we are following best-in-breed industry patterns for continuous integration and deployment of new product/infrastructure releases.
- YOU will deliver using an agile pattern with our customers so you should be used to working on features for continuous test and release.
- YOU will help and influence other members of the team in using the right AWS tools to scale the features we are delivering for our customers.
- YOU will help drive the migration of a significant multi-tenant Connected Aviation web application from on-premise, into the AWS cloud.
- YOU will be part of the on-call roster supporting critical service incidents.
What YOU will learn:
- YOU will learn to innovate and create new infrastructure and systems in a supportive team who value new ideas.
- YOU will learn how to balance feature development speed and reliability while meeting well-defined service-level objectives.
- YOU will learn to work collaboratively with your colleagues across the world to deliver great systems rather than just a great individual feature.
Qualifications YOU must have:
- Extensive experience delivering and operating complex, large-scale cloud systems (AWS preferred), supported by a degree in a relevant STEM field (Bachelor’s or advanced degree required)
- Flexibility to be available for team meetings as early as 9:00 AM Eastern to accommodate team members in the UK and India.
- Software engineering background or a good level of coding skills in an OO language (with either .NET or Python being advantageous) in relation to managing infrastructure as code using AWS CDK.
- Experience managing AWS ECS clusters and working with systems hosted in SQL based databases like PostgreSQL, and RabbitMQ message brokers.
- Experience with Bash and/or Powershell scripting of new parts of infrastructure (or suggesting other ways to bring infrastructure to life).
- Experience with system design consulting, platform management, and capacity planning for AWS & CloudFormation experience
- Experience with Docker containerization & Git.
Qualifications We Prefer:
- Having a dual background in both systems infrastructure and software engineering.
- Experience with reporting and monitoring using industry standard tools and techniques.
- Experience with Azure Dev Ops and Pulumi.
- Experience with SCRUM (and Scaled Agile Framework as a bonus)
- A desire to automate as much as possible and proficiency with automation tools.
- Understanding of network segmentation, routing and VPNs.
- Security knowledge: can work with our cyber teams and understand their recommendations.
- Communication skills – be able to thoroughly document and articulate what
- you have built clearly and concisely to team members and stakeholders.
What We Offer
- 25 days annual leave plus 9 public holidays (option to buy/sell up to 5 days)
- Competitive salary package and bonus scheme
- Excellent 2:1 matched pension contribution (up to 10%)
- BUPA health insurance with discounted rates for immediate family members
- Life assurance
- Group Income Protection
- Hybrid working model to support flexibility
- Health and Wellbeing Cash Plan
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