Engineer - Platform

Platform Engineer – Infrastructure Engineering & Tooling (Atlas)

You will join a collaborative team of software, Dev Ops, and platform engineers across the Trainline platform.

The team owns the ecosystem used to deploy, run and manage traffic across the Trainline platform.

Responsibilities

• Deliver improvements to Trainline’s engineering platforms, contributing to infrastructure that helps teams deploy, run and manage services reliably.
• Implement infrastructure changes using Terraform, following existing module patterns and working with others to ensure changes are clear, consistent and maintainable.
• Apply least-privilege and secure-by-default principles across AWS accounts, helping maintain a secure and reliable platform environment.
• Contribute to automation scripts or tooling using Node. js or Python, supporting repeatable delivery and reducing manual effort for engineering teams.
• Collaborate closely with Senior Platform Engineers, Tech Leads and Delivery Managers to understand priorities, clarify requirements and deliver agreed milestones.
• Test, validate and deploy changes through CI/CD pipelines, ensuring work is well checked before it reaches production.
• Provide clear delivery updates, raise blockers early, and ask for support when needed so the team can stay aligned and move forward effectively.
• Build knowledge of Trainline’s platform and engineering practices, using feedback and collaboration to continuously improve the quality of work.

Qualifications

• Good experience working with AWS services such as ECS, Lambda, IAM or Cloud Front, with an understanding of cloud operational and security best practice.
• Experience delivering infrastructure changes using Terraform, with an interest in writing clear, reusable and reliable infrastructure code.
• Ability to deliver defined tasks with minimal supervision, while knowing when to ask questions, share progress or raise risks.
• Experience using Node. js or Python for automation, scripting or integration tasks, or transferable experience with similar programming languages.
• A thoughtful approach to secure engineering, including least-privilege access and secure-by-default infrastructure practices.
• Experience using AI tooling to support day‑to‑day work such as coding, research, code review or improving productivity.
• A collaborative working style, with the ability to contribute effectively in agile, delivery‑focused teams.
• Helpful experience with Git-based CI/CD pipelines, multi‑account AWS environments, CDN, WAF or service‑to‑service authentication approaches such as OIDC.

Benefits and Working Conditions

• Private healthcare and dental insurance.
• Generous work‑from‑abroad policy and flexible hybrid model (minimum 60% in office over 12 weeks).
• 2‑for‑1 share purchase plans.
• EV scheme to reduce carbon emissions.
• Extra festive time off and family‑friendly benefits.
• Career growth opportunities with clear career paths, transparent pay bands, personal learning budgets and regular learning days.
• Diversity & Inclusion

We know that having a diverse team makes us better and helps us succeed.

We are committed to creating inclusive places to work, where everyone belongs and differences are valued and celebrated.

We value diversity of gender, ethnicity, sexuality, disability, nationality and thought.

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