• Collaborate with service engineering teams to design, implement, and maintain scalable and resilient infrastructure solutions optimizing for performance, resilience, and cost. • Ensure infrastructure aligns with business requirements and industry standards. • Leverage Terraform to automate infrastructure provisioning and configurations. • Implement SRE principles to improve system reliability and reduce downtime. • Improve developer workflows by creating self-service tools, optimizing CI/CD pipelines, and enhancing deployment processes to remove friction. • Develop and maintain robust monitoring and alerting systems to proactively identify and resolve issues. • Lead incident responses, manage on-call rotations, and facilitate post-incident reviews to drive continuous improvement and resilience. • Automate everything—drive adoption of Infrastructure as Code (IaC) and build automated pipelines for testing, monitoring, and deployments. • Leverage your excellent written and verbal communication skills, to create communications on upcoming changes and how they affect teams.

This description is a summary of our understanding of the job description. Click on 'Apply' button to find out more. Role Description Flex is looking for a seasoned Senior Infrastructure Engineer with a passion for performance optimization to join our dynamic Infrastructure Team. - Be part of the Infrastructure Engineering team responsible for creating a sustainable platform that ensures the effectiveness, reliability, and scalability of our systems. - Design, build, and maintain robust and scalable infrastructure. - Collaborate closely with service engineering teams to automate processes, streamline operations, and ensure optimal system performance and reliability in our cloud infrastructure on AWS and GCP. - Utilize deep knowledge of cloud architecture and SRE principles to steer AI tools effectively. - Influence key infrastructure and architecture decisions while ensuring high reliability and smooth delivery pipelines. Qualifications - Proven experience in building, scaling, and monitoring cloud infrastructure on AWS, especially EKS, S3, RDS, API Gateway, Load Balancers, VPC, Lambdas, DocumentDB, and DynamoDB. - Proven experience using Terraform to update and maintain cloud infrastructure. - Proven experience with containerized applications, Kubernetes, and microservice deployments. - Strong knowledge of GitHub Actions and CI/CD best practices. - Experience with developer productivity tools: designing CI/CD workflows, building internal tools, and creating self-service solutions to streamline software development. - Knowledge of monitoring and observability tools and frameworks, with working knowledge of Datadog being a plus. - Familiarity with networking concepts (DNS, load balancing, firewalls, VPNs). - Strong collaboration skills with the ability to work effectively across teams and communicate technical ideas clearly. - Experience coding/reading in one of the industry standard languages such as Java, Python, or TypeScript. Requirements - Minimum of 5 years of cloud infrastructure experience. Benefits - Competitive medical, dental, and vision available from Day 1. - Company equity. - 401(k) plan with company match (our company match kicks off at the beginning of 2026). - Unlimited paid time off + 13 company paid holidays. - Parental leave. - Flex Cares Program. - Free Flex subscription.

• Design, build, and maintain Azure-based infrastructure, with a primary focus on Azure Kubernetes Service (AKS) for reliability, scalability, and developer experience. • Architect and operate infrastructure to support continuous availability — including zero-downtime deployments, automated rollouts, and the ability to scale capacity up and down in response to predictable demand peaks and quiet periods throughout the year. • Own system reliability and maintenance practices, including patching, upgrades, and configuration management across environments, ensuring infrastructure remains healthy, current, and audit-ready. • Develop and maintain disaster recovery and business continuity plans — including documented runbooks, tested recovery procedures, rollback strategies, and data recovery protocols that can be executed confidently when needed. • Develop and document reusable tools, networking patterns, and infrastructure templates for engineering teams to follow. • Collaborate cross-functionally with engineering teams when infrastructure changes are coming, or when working with them to understand what they need. • Own and improve CI/CD pipelines using GitHub Actions ensuring fast, reliable, and secure delivery of workflows. • Manage infrastructure-as-code using Terraform, enabling repeatable and auditable provisioning across environments. • Implement and maintain observability and monitoring solutions, including Grafana dashboards and alerting, to provide teams with clear visibility into system health. • Manage identity and access using Microsoft Entra ID, applying least-privilege principles across services and teams. • Approach all infrastructure work with a security-first mindset — proactively identifying risks, enforcing compliance patterns, and communicating deviations from standard operating procedures. • Communicate clearly with stakeholders and adjacent teams on infrastructure changes, timelines, and dependencies. • Contribute to the team's knowledge base by creating runbooks, architecture documentation, and onboarding guides.

• Engineer solutions for cloud based systems • Provision and manage resources using Infrastructure as Code (IaC) methodologies • Provide in depth technical support for a global, multi-region environment • Share your knowledge to elevate your teammates’ skill sets • Provide support for tickets escalated through the Helpdesk • Bring a security-first approach to everything • Be an indispensable partner with the Information Security team