Senior Infrastructure Engineer

🕒 March 5

🇺🇸 United States – Remote

💵 $146.2k - $212k / year

⏰ Full Time

🟠 Senior

👷 Infrastructure Engineer

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Flex

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2019

💳 Fintech

🏠 Real Estate

👥 B2C

Fintech • Real Estate • B2C

Flex is a financial technology company that enables renters to split and schedule rent payments, pay move-in costs over time, and build credit through on-time rent reporting. It offers consumer-facing payment products (rent split, pay-over-time, and move-in loans) and partners with property owners and property-management systems to help properties collect on-time rent and retain residents. Flex operates via bank partnerships and regulated lending/servicing subsidiaries to provide loans and payment processing while emphasizing security and regulatory compliance.

📋 Description

• 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.

🎯 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

🏖️ 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