Senior Platform Engineer
First seen by Alion on Oct 29, 2026.
Our client in the financial services industry is looking for a highly technical Senior Platform Engineer to help transform how software is built, secured, tested and deployed across a large-scale engineering environment.
You will contribute to the evolution of an Internal Developer Platform supporting more than 1,000 engineers, enabling faster, safer and more consistent software delivery through automation, cloud-native technologies and AI-enabled engineering practices.
The focus is on removing engineering bottlenecks, enabling developer self-service and introducing the automation, security guardrails and governance required to accelerate delivery within a complex, business-critical environment.
Working across AWS, Amazon EKS, Kubernetes, GitHub, Terraform, GitOps and CI/CD, you will design and implement scalable platform capabilities that improve developer productivity while supporting enterprise security, operational resilience and reliability.
This is an opportunity for a hands-on engineer who enjoys solving complex technical challenges, building innovative solutions and taking ideas from concept and proof of concept through to production.
Key responsibilities
- Design, implement and optimise scalable cloud infrastructure using Infrastructure as Code (IaC), ensuring consistency, security and repeatability across environments.
- Build and enhance automated CI/CD pipelines to support reliable, efficient and controlled software releases.
- Develop and evolve the Internal Developer Platform, enabling engineering teams to provision infrastructure and deploy applications through self-service capabilities.
- Engineer and optimise Kubernetes-based platforms and containerised workloads, particularly within AWS and Amazon EKS environments.
- Implement GitOps practices and deployment automation to improve release consistency, traceability and operational control.
- Establish automated security controls, governance mechanisms and platform guardrails across the software delivery lifecycle.
- Explore and implement AI-enabled engineering capabilities, including workflows that support the safe and efficient delivery of AI-generated software.
- Troubleshoot complex infrastructure, platform and distributed-system issues, leading root-cause investigations and driving permanent resolutions.
- Contribute to technical architecture and engineering standards across cloud-native platforms, microservices and event-driven systems.
- Improve platform observability, performance, scalability, availability and operational resilience.
- Identify opportunities to eliminate manual processes, simplify developer workflows and improve engineering productivity.
- Provide technical guidance and mentorship, influencing platform engineering practices across multiple teams.
Minimum requirements
- At least 8 years of hands-on experience in Platform Engineering, DevOps, Site Reliability Engineering (SRE) or a related technical discipline.
- Strong experience designing, implementing and operating cloud infrastructure, preferably using AWS.
- Hands-on experience with Kubernetes and container orchestration, ideally Amazon EKS.
- Proven experience with Infrastructure as Code tools such as Terraform, AWS CloudFormation or equivalent.
- Strong experience building and maintaining CI/CD pipelines using GitHub Actions, Jenkins or similar technologies.
- Practical experience with Git, GitHub, GitOps and automated software delivery practices.
- Strong scripting or programming capabilities using Python, Go, Bash, PowerShell or similar languages.
- Experience with cloud-native architectures, microservices, APIs and distributed systems.
- A solid understanding of cloud networking, identity and access management, security controls, observability and production support.
- Experience troubleshooting complex technical issues and improving the reliability and performance of production platforms.
- The ability to communicate technical decisions clearly and collaborate effectively with software engineering, architecture, security and infrastructure teams.
Advantageous experience
- Experience building or enhancing an Internal Developer Platform (IDP) or developer self-service tooling.
- Exposure to enterprise financial services, banking or other highly regulated environments.
- Experience implementing security guardrails, governance and compliance controls within CI/CD pipelines.
- Experience with AI-assisted software development or integrating AI capabilities into engineering workflows.
- Relevant AWS, Kubernetes or cloud engineering certifications.
- A relevant degree in Information Technology, Computer Science, Software Engineering or a related discipline.
Why consider this opportunity?
- Influence platform engineering capabilities used by more than 1,000 engineers.
- Work with modern cloud-native technologies in a large-scale financial services environment.
- Contribute to the evolution of secure, automated and AI-enabled software delivery.
- Solve complex engineering challenges with a focus on scalability, reliability and developer experience.
- Make a meaningful technical impact without the requirement for formal line management.
Ready to make an impact?
If you are a hands-on Senior Platform Engineer passionate about cloud automation, Kubernetes, developer platforms and modern software delivery, we invite you to apply.
Help shape the next generation of engineering platforms in financial services.