Senior Software Engineer

Supporting Cast seeks a passionate, creative developer with PHP experience to expand on Supporting Cast’s premium podcasting platform. As a key member of our team, you'll be helping independent podcasters, networks, and media companies improve their financial sustainability and better satisfy their listeners. You'll be joining a small development team and will be in a position to have a huge influence on our tech stack and our rapidly evolving product. Working here provides the dynamic excitement of a startup, and the stability and competitive compensation of an established employer.

We will consider candidates from any location, provided you can work US East Coast hours — the role can be fully remote after the pandemic ends, or you may choose to work out of Slate's Washington, DC or Brooklyn, NY offices.

About the Position


  • Learn a lot about the fast-growing podcast industry and the fast-growing membership-service space
  • Scale an application vertically as we onboard clients with tens of thousands of members
  • Scale an application horizontally as we evaluate and implement new technologies and stacks beyond Laravel and PHP
  • Build and maintain an API for clients
  • Build and maintain implementations for other websites, including but not limited to WordPress plug-ins and JS/iframe embeds
  • Maintain and optimize advanced CDN (Fastly), e-commerce (Stripe), and dev-ops (AWS) integrations
  • Play an important role in product, business, and hiring conversations


  • Five to seven years’ work experience
  • Extensive experience with PHP and Laravel. Experience with WordPress is a plus.
  • Fluency with a wide range of AWS services, with the ability to quickly research and adopt new ones.
  • Experience with CDN strategies. Knowledge of Varnish is a plus.
  • Experience with payment platforms like Stripe (preferred) or Braintree
  • Working knowledge of software design concepts like SOLID, design patterns, and cyclomatic complexity
  • Working familiarity with job-scheduling tools like queues and crons

Our Current Tech Stack:

• App: PHP/Laravel, Nginx, Varnish, Redis, Postgres, Docker
Dev ops: AWS (EC2/EB/Pipeline/Parameter Store/etc.), Fastly CDN
Key business vendors and partners: Stripe, Wordpress, Zapier
Key software vendors: Google Cloud Computing, AWS (SES/SNS/SMS)
Repo: GitHub
Project management: Agile-oriented. Zenhub, Notion, Google Docs, Slack

About Supporting Cast

Supporting Cast enables podcasters and audiobook publishers to launch podcast subscription programs and sell premium audio content that listeners can access through their podcast apps. Created by Slate following the success of Slate Plus, we now work with some of the largest podcasters and audiobook publishers in the industry.

As an internal startup, our small team is very much part of Slate’s warm, inclusive, and unique business culture. Slate has a history of successful internal startups, having previously spun off Social Code and Megaphone as successful independent companies.

Slate is committed to excellence through diversity, which involves attracting talented people from diverse backgrounds and traditions. We encourage everyone to apply. If you require a reasonable accommodation during the application and selection process, please let us know. We will do what we can to meet your needs.

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