Senior Full-Stack Software Engineer, LinkSquares

• Strong backend experience with Ruby on Rails building production integration systems
• Solid frontend skills with React and TypeScript. You ship features across the stack
• Experience with distributed systems like message queues (RabbitMQ, Kafka, SQS), async processing, idempotency, eventual consistency
• If you've worked at integration platforms or iPaaS companies (Zapier, Workato, Tray.io, MuleSoft), even better
• You've deployed and operated production services on AWS (Lambda, RDS, SQS, S3)
• PostgreSQL proficiency including schema design, query optimization, multi-tenant data handling
• You've built APIs that other engineers use. You understand webhooks, polling systems, and event processing
• Deep knowledge of integration mechanics like OAuth2 across different enterprise systems, webhook reliability, credential management, rate limiting, handling third-party API failures
• Experience with enterprise SaaS APIs (Salesforce, HubSpot, NetSuite, Coupa) is a big plus
• Product sense for integrations. You can figure out which integrations actually matter to customers, understand enterprise workflows, and translate customer problems into integration solutions
• Track record shipping integration features end-to-end. You've debugged OAuth flows that mysteriously break, webhooks that stop firing, or data sync conflicts
• You make teammates better through code review and sharing what you've learned. You help people think about integration architecture, not just build one-off connections
• You make good calls with incomplete information and changing requirements
• You use AI tools (Cursor, Copilot, Claude) to work faster and experiment with new capabilities

Desirable

• We're seeking an experienced Senior Full-Stack Software Engineer (Integrations) who can build core platform infrastructure that powers our product capabilities
• Design and develop integration platform infrastructure - adapter layer APIs, event-driven systems, workflow orchestration engines, authentication services across enterprise applications
• Lead technical decision-making on integration architecture patterns, API design for platform consumers, and distributed systems trade-offs
• Build full-stack capabilities across backend integration services and frontend interfaces
• Collaborate across Product, Sales, Tech Services, and Engineering teams to understand integration requirements and deliver solutions
• Own feature delivery from conception through production deployment
• Debug and resolve complex integration issues: OAuth flows, webhook delivery failures, rate limiting scenarios, message queue problems, third-party API connectivity
• Establish technical standards and best practices for integration development through code review, documentation, and team guidance
• Improve development workflows: CI/CD pipelines, testing strategies for third-party API interactions, and observability infrastructure
• Mentor team members on integration platform thinking, distributed systems design, and OAuth authentication patterns