Sr. Platform Engineer, L3

Citrine Informatics

2d•$165,000 - $185,000

About The Position

This role helps support the technical foundation behind Citrine’s platform and engineering organization. The person in this role will contribute to infrastructure and deployment systems that are observable, reliable, scalable, and aligned with the needs of a growing team. Citrine Informatics is looking for a Senior Infrastructure / Platform Engineer to help shape, implement, and operate scalable cloud infrastructure and platform systems. This role is a fit for someone with experience across infrastructure, automation, deployment, and production operations, and who enjoys working closely with others to improve reliability, developer workflows, and platform capabilities. This person will contribute to cloud infrastructure in AWS, infrastructure as code, Kubernetes operations, CI/CD, observability, and containerization. Just as important, they will bring sound judgment, adaptability, and a collaborative working style suited to a fast-moving environment where priorities can evolve and teams work together to solve complex problems.

Requirements

Experience in infrastructure engineering, platform engineering, DevOps, or site reliability engineering roles
Hands-on experience working in AWS production environments, preferably experience using CloudFormation
Meaningful hands-on expertise with Terraform, including writing and managing infrastructure beyond basic exposure
Experience implementing observability and monitoring practices, preferably with Datadog
Production experience with Kubernetes administration and deployment, including cluster deployment, configuration, and maintenance
Experience with container build and deployment systems, including image optimization techniques such as layer management and efficient build strategies
Experience implementing and managing CI/CD pipelines, especially with GitHub Actions
Experience contributing to the design and deployment of infrastructure or platform systems from implementation through production operations
Comfort working through technical challenges in environments where priorities and requirements may continue to evolve

Nice To Haves

Experience in startup or high-growth environments with small, collaborative teams
Exposure to platform engineering practices such as developer enablement, internal tooling, and operational maturity initiatives
Experience balancing near-term delivery with longer-term maintainability

Responsibilities

Design, implement, and maintain cloud infrastructure in AWS with attention to scalability, reliability, security, and automation
Manage infrastructure using Infrastructure as Code, including hands-on work with Terraform and experience with CloudFormation
Deploy, administer, and maintain Kubernetes clusters in production environments
Improve platform tooling, deployment workflows, and operational practices that support engineering teams and production systems
Implement and manage observability and monitoring solutions, ideally including experience with Datadog, across metrics, logging, alerting, and incident response
Work with containerized systems and deployment workflows, including image build pipelines and optimization techniques
Create and maintain CI/CD pipelines, including required experience with GitHub Actions; experience with Jenkins and/or ArgoCD is a plus
Partner with teammates across engineering to identify needs, evaluate options, and deliver practical infrastructure and platform solutions
Investigate platform and infrastructure issues, support root-cause analysis, and contribute to sustainable improvements
Participate in technical planning, architecture discussions, and continuous improvement efforts across the platform engineering function

Benefits

401k with matching up to 4%
Medical, vision, dental insurance (we pay 100% of your premium and 75% of your dependents)
Company-paid Life and Disability insurance
FSA and HSA plans
Equity options within the company
12 weeks of paid parental leave
Flexible PTO on top of our 15 paid company holidays (includes your birthday!)
Free financial counseling
$600 tech allowance
Monthly $75 phone reimbursement
$5,000 annual continuing educational allowance