Senior Infrastructure Engineer (AWS, K8S, GitOps)

Due to the nature of the projects and specific client security clearance, this role requires the successful candidate to be a Singapore Citizen or PR of Singapore. Senior Infrastructure Engineers help clients build and evolve systems that client organizations use to deliver and run software. They are comfortable working within teams of people with diverse roles and levels of experience to find solutions that meet the needs of the organization. They combine technical expertise and understanding with consideration of different situational needs. They champion technical quality and effective ways of working as a means to better outcomes for clients, rather than an end in themselves. They help clients to understand agile ways of working and DevOps as a mindset for collaboration. Job responsibilities You will work within teams to launch projects through hands-on implementation, evaluate existing infrastructure and drive improvements. You will explore the client’s needs and collaborate on building a technical roadmap and impactful solution that will support their ambitious business goals. You will help shape and build Thoughtworks’ cloud and infrastructure practice through collaboration with other practitioners, business development, marketing and capabilities development teams. You will ensure and build the controls and processes for continuous delivery and evolution of infrastructure and applications, driving automation through all stages of the process. You will take a proactive role in monitoring and ensuring that technical expectations of deliverables are consistently met on projects. You will provide expertise and guidance in the areas of DevOps, cloud, platform and infrastructure engineering, both internally and in client sites. You will establish trusting and thoughtful partnerships with a client’s engineering leadership. You will adjust and suggest innovative solutions to current constraints and business policies. Job qualifications Technical Skills You can contribute to the design and implementation of enterprise and/or web-scale hosting platforms and can administer application servers, web servers, and databases. You have a deep understanding of cloud and virtualization platforms, infrastructure automation, and application hosting technologies, with hands-on experience in AWS . You have strong experience with Kubernetes, container orchestration, and GitOps practices to deploy, manage, and troubleshoot containerized workloads through version-controlled workflows. You can write scripts using at least one scripting language, with Golang experience being a plus , and are comfortable building and managing Linux servers, Windows servers, or container clusters. You have experience working with software delivery teams, and understand DevOps philosophies, Agile methods, Infrastructure as Code and how to apply them to your work. You have a history of working with at least one IaaS cloud platform, and two or more application runtime platforms including physical servers, virtual servers, container clusters, serverless and databases. You have experience with continuous integration and continuous delivery tools with different tech stacks. You’ve previously worked with monitoring systems for availability, performance or security. You have an understanding of security concerns, threats and approaches for dealing with them, including infrastructure platform vulnerabilities, secrets management, network security and software supply chain security. Bonus points if you have experience with AI agentic development , unit testing and automated testing tools, and stress and performance testing. Professional Skills You genuinely enjoy interacting with teammates from across the business and have a knack for communicating technical concepts to nontechnical audiences. You love creating robust, scalable, flexible and relevant solutions that help transform businesses and industries.