Platform Engineer

Stream Companies; West Chester (Chester County); On-site; USD 120,000 - 180,000; Full time

Job summary

Stream Companies in West Chester, PA, is seeking a Platform Engineer to own our AWS environments, CI/CD pipelines, and automated testing ecosystems. You will optimize performance, control costs, and reinforce security while collaborating with developers to keep deployments fast and reliable.

The role emphasizes autonomy, governance, and a proactive approach to infrastructure, with a focus on cloud services, monitoring, and continuous improvement of our marketing technology platform.

Qualifications

• 5+ years of professional experience with AWS and cloud architectures.
• Strong Linux server experience and CLI proficiency.
• Experience designing and managing deployment workflows with CI/CD.
• Exposure to automated testing frameworks like Pest or Playwright.

Responsibilities

• Own AWS environments (EC2, RDS, S3, ELB, Lambda) for performance and availability.
• Maintain and enhance CI/CD pipelines and testing automation.
• Collaborate with development teams to optimize data pipelines and platform reliability.
• Monitor and optimize cloud spend and security governance.

Skills

AWS

Linux

CI/CD

Automated testing

Cloud architecture

Tools

Pest

Playwright

Job description

Platform Engineer

Stream Companies West Chester, Pennsylvania, United States

About this position

About Stream Companies

Stream Companies is a full-service, fully integrated advertising agency built for brands that want to move forward. Founded in 1997 and headquartered in Malvern, Pennsylvania, we partner with clients to launch, position, and manage brands through both full-service relationships and project-based work.

We operate with an entrepreneurial mindset—collaborative, curious, and always pushing what’s next. By combining strategic planning, creative development, media planning and buying, digital, interactive, television, production, and co-op management with cutting-edge technology, we deliver integrated solutions designed for today’s marketing challenges.

About the role

Stream Companies is seeking a Platform Engineer to serve as the primary guardian of our infrastructure and deployment stability for our best-in-class marketing technology platform that serves the automotive retail sector. This role is a strategic evolution development functions —designed for an engineer who prioritizes AWS architecture but understands that a "bulletproof" platform requires healthy CI/CD and automated quality checks.

If you are a cloud specialist who wants more autonomy and less red tape, this is your seat at the table. You will lead our infrastructure strategy while collaborating with our dev team to ensure our deployment pipelines and testing suites are second to none.

The Mission

Your primary objective is the stability, security, and cost-efficiency of our AWS ecosystem. While your "home base" is the cloud, you will play a vital role in supporting our Quality Control (QC) and CI/CD processes to ensure that when we ship code, it stays shipped.

What you'll do

• AWS & Infrastructure Authority (The Priority)
• Architect & Optimize: Take full ownership of our AWS environments (EC2, RDS, S3, ELB, Lambda) to ensure peak performance and 99.9% availability.
• Financial Stewardship: Proactively monitor and optimize cloud spend, treating vendor costs with a high degree of strategic ownership.
• Security & Governance: Maintain servers, load balancers, and security protocols (IAM, AWS Cognito) to ensure a secure, high-availability cloud presence.

Deployment & Quality Support

• CI/CD Management: Maintain and harden our deployment pipelines to ensure seamless, low-risk releases.
• Quality Guardrails: Act as the technical steward for our automated testing tools (Pest PHP and Playwright). You aren't necessarily writing every test, but you are ensuring the "machine" that runs them is fast and reliable.

Engineering Collaboration

• Technical Debt Mitigation: Work alongside the dev team to identify infrastructure-related bottlenecks or framework issues that impact performance.
• Platform Support: Provide a "systems-eye view" during sprints, helping the team troubleshoot environment-specific bugs or data pipeline optimizations (Snowflake/Aurora).

Qualifications

• Cloud Mastery: 5+ years of deep professional experience with AWS. You should be comfortable designing failover architectures and managing complex cloud networking. Bonus for experience in Azure Cloud Environment.
• Systems Expertise: Hands-on experience configuring and maintaining Linux servers. You are a power user of the command line for debugging and system health monitoring.
• CI/CD & Automation: Experience managing deployment workflows and an interest in (or exposure to) automated testing frameworks like Pest or Playwright.
• Bonus Points: Experience with AWS Glue, Snowflake, or migrating legacy identity systems to modern solutions like AWS Cognito.

Stream Companies is an E-Verify employer.