Sr. API Engineer

The Subway HR Team•Shelton, CT

2d•Onsite

About The Position

Subway is on a mission to build a world-class digital platform that serves millions of guests and thousands of franchise locations globally. The Senior Software Engineer, APIs is a key technical contributor on the team that powers the integration layer connecting Subway’s front-end applications (iOS, Android, Web, Kiosk) with our internal and external partner systems. You’ll design, build, and maintain high-performance APIs and services on AWS, collaborating closely with product, architecture, and partner engineering teams. You’ll also own integrations with major third-party delivery and marketplace platforms — including DoorDash, Uber Eats, and similar partners. AI-assisted development is a core part of how our team works — you’ll be expected to leverage tools like GitHub Copilot and Claude daily.

Requirements

5 or more years of hands-on production software development experience.
Demonstrated experience building and operating RESTful and/or GraphQL APIs at scale.
Strong proficiency in one or more of: JavaScript/TypeScript (Node.js), Java, or C#.
Experience with serverless architectures on AWS (Lambda, API Gateway, DynamoDB, SQS/SNS).
Solid understanding of integration patterns: event-driven architecture, webhooks, async messaging, and pub/sub.
Experience integrating with third-party platforms and vendor APIs.
Proficiency with AI-assisted development tools (GitHub Copilot, Claude, or equivalent).
Experience with CI/CD pipelines and source control workflows (Git, GitHub Actions, Azure DevOps).
Strong debugging, root-cause analysis, and production incident management skills.
Bachelor’s degree or higher in Computer Science, Software Engineering, or a related field (or equivalent practical experience).

Responsibilities

Design, develop, and document new and enhanced APIs as part of the Subway middleware platform, supporting both internal system integration and external partner connectivity.
Leverage AI-assisted development tools (GitHub Copilot, Claude, and similar) as a core part of daily engineering work. Champion AI tooling adoption across the team.
Build and maintain integrations with third-party delivery and marketplace partners (e.g., DoorDash, Uber Eats), ensuring reliable order flow, menu synchronization, and real-time operational data exchange.
Collaborate with business stakeholders and product teams to understand requirements; translate them into scalable, maintainable architecture and implementation plans.
Conduct constructive code reviews and provide technical design guidance to peers and junior engineers.
Enforce data governance, security policies, and compliance standards throughout the software development lifecycle.