Backend Engineer (SaaS Products)

Service Match: Saas Product Development

Required Experience: 4+ years building multi-tenant SaaS architectures.

Key Tech Stack: Node.js, Python (FastAPI/Django), Serverless (AWS Lambda/Cloudflare Workers), Stripe/Billing integrations.

Job Details:

• Develop secure, multi-tenant APIs and backend engines for scalable SaaS platforms.

• Implement usage-based billing logic, authentication flows (OAuth), and webhook handlers.

• Optimize database schemas and query performance to handle high concurrent user traffic.

Key Responsibilities

• Design, implement, and maintain secure, multi-tenant backend APIs for global software-as-a-service configurations.

• Build scalable, event-driven data workflows capable of managing intensive user volumes with low latency.

• Optimize database schemas, structural query indexing, and transactional integrity across high-volume storage networks.

• Integrate complex cloud-native architectures and serverless microservices to guarantee rapid app responsiveness.

• Implement strict data security measures, multi-tenant isolation structures, and end-to-end payload encryption.

• Create and manage modular recurring billing logic, subscription handling systems, and secure payment integrations.

• Develop, test, and maintain robust third-party webhook handlers and developer-facing platform APIs.

• Author thorough unit and integration test suites to maintain code coverage and prevent software regressions.

• Collaborate continuously with front-end engineering squads to implement optimal JSON data exchange schemas.

• Set up automated environment logging, structural trace monitoring, and real-time failure alerts across microservices.

• Maintain clear technical documentation detailing software endpoints, system dependencies, and deployment runs.

• Research and implement emerging serverless frameworks and engineering strategies to optimize hosting expenditures.

Requirements

• 4+ years of professional backend engineering experience constructing multi-tenant SaaS or web applications.

• Masterful command of core server-side languages including Node.js or Python frameworks like FastAPI and Django.

• Hands-on expertise deploying serverless microservices specifically utilizing platforms like AWS Lambda or Cloudflare Workers.

• Thorough knowledge of relational and non-relational database design, query optimization, and connection pooling.

• Deep familiarity with core SaaS infrastructure needs including OAuth security protocols, JWT validation, and Stripe billing.

• Strong analytical mindset focused heavily on building robust software architectures for performance and scale.