Flex - Senior Infrastructure Engineer
Requirements
• 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 language such as Java, Python, TypeScript • Flex takes a market-based approach to pay, and compensation may vary depending on your primary work location. Work locations are categorized into one of three tiers based on a cost of labor index for that geographic area. The successful candidate’s starting pay will be commensurate with their experience, qualifications, and Flex’s internal leveling guidelines and benchmarks. • Tier A (NYC/SF/Seattle): $172,000 - $212,000 USD • Tier A (NYC/SF/Seattle): • Tier B: $154,800 - $193,500 USD • Tier B: • Tier C: $146,200 - $182,740 USD • Tier C: • We understand that it takes a diverse team of highly intelligent, curious, determined, empathetic, and self aware people to grow a successful company. Our HQ is located in New York City, but we have employees located throughout the US, Australia, Canada and South America. We are growing quickly, but deliberately, with a focus on building an inclusive culture. Our dynamic team has incredible perspectives to share, just as we know you do, and we take great pride in being an equal opportunity workplace. • We offer many employee benefits & perks. For full-time U.S based positions we offer: • Competitive medical, dental, and vision available from Day 1 • 401(k) plan with company match (our company match kicks off at the beginning of 2026) • Unlimited paid time off + 13 company paid holidays • Flex Cares Program • Free Flex subscription • For full time non-US employees, we offer • Competitive compensation + company equity
Responsibilities
• 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.
Benefits
• Competitive medical, dental, and vision available from Day 1 • 401(k) plan with company match (our company match kicks off at the beginning of 2026) • Unlimited paid time off + 13 company paid holidays • Flex Cares Program • Free Flex subscription • For full time non-US employees, we offer • Competitive compensation + company equity
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