Full Stack Developer – Platform, Multi-Tenant Systems

Role Overview

• Build and maintain frontend applications using Next.js 14+ (TypeScript) with multi-tenant routing
• Develop backend services using Node.js (TypeScript) deployed via AWS Lambda
• Ensure strong type safety and consistency across the full stack
• Contribute to scalable, maintainable architecture across distributed systems
• Design and maintain a dedicated integration layer using AWS Lambda + SQS
• Integrate external platforms (e.g., gym systems, CFMS, Speedy Sticks, CommunityCare)
• Implement retry logic, failure handling, and system resilience
• Maintain clear separation between integration services and application APIs
• AWS API Gateway in front of the integration layer Lambdas provides throttling, request validation, and API key management across third-party service endpoints
• Treat AI-assisted development (e.g., Cursor, GitHub Copilot, or similar tools) as a baseline capability
• Apply thoughtful prompt engineering and structured workflows to produce reliable, maintainable code
• Use AI tools across the development lifecycle, including design, implementation, testing, and documentation
• Stay current with the evolving AI tooling landscape and adopt practices that improve developer productivity
• Build and maintain infrastructure using AWS Lambda, SQS, IAM, Cognito, Amplify, and RDS
• Deploy frontend applications via AWS Amplify, Fargate or similar
• Design systems that are scalable, cost-efficient, and operationally simple
• Work with PostgreSQL (AWS RDS) using relational modeling
• Implement row-level security for multi-tenant data isolation
• Manage authentication and authorization using AWS Cognito (RBAC, JWT scoping)
• Implement file storage using AWS S3 (e.g., lab results, CSV uploads)
• Build notification workflows using AWS SES
• Integrate and maintain payment systems using Stripe
• Implement polling-based updates (30-second intervals) for journey tracking
• Design user experiences that feel real-time while avoiding unnecessary infrastructure complexity
• Own release cuts, including PR reviews and deployment coordination
• Manage environment configurations, secrets, and package upgrades
• Debug and resolve complex system and integration issues
• Build proofs of concept (POCs) to validate new features and approaches
• Lead or support Agile ceremonies (standups, sprint planning, retrospectives)
• Partner with Product Managers to refine and deliver epics and requirements
• Act as a technical point of contact within the pod and across collaborating teams
• Provide guidance and context to teammates to support delivery and quality

Requirements

• 5+ years of professional software development experience delivering production applications
• Strong full-stack engineering experience across modern web technologies
• Strong experience with TypeScript across frontend and backend
• Experience with Next.js and modern React frameworks
• Experience building serverless applications on AWS
• Ability to own and deliver a system architecture from scratch: data model, API contracts, infrastructure topology, and deployment pipeline
• Ability to debug and resolve complex issues across distributed systems
• Experience working with APIs, integrations, and platform-based architectures
• Familiarity with authentication systems (JWT, RBAC, Cognito)
• Strong communication skills and ability to collaborate across disciplines

Tech Stack

• AWS
• Distributed Systems
• JavaScript
• Next.js
• Node.js
• Postgres
• React
• TypeScript

Benefits

• Health insurance
• Retirement plans
• Paid time off
• Flexible work arrangements
• Professional development