TL;DR

Senior Backend Developer (SaaS): Design and develop scalable backend services and a multi-tenant SaaS platform using Node.js, NestJS, and PostgreSQL with an accent on security, performance, and scalability. Focus on architecting high-load systems, implementing advanced database features, and ensuring SOC 2–aligned security practices.

What you will do

Design, develop, and maintain scalable backend services using Node.js and NestJS (TypeScript).
Architect and optimize a multi-tenant SaaS platform ensuring performance, scalability, and security.
Work extensively with PostgreSQL including advanced queries, indexes, partitioning, and Row-Level Security.
Implement secure authentication and authorization (JWT, OAuth2, MFA) and follow SOC 2 security practices.
Build and manage background jobs with BullMQ and Redis, deploy and operate applications on AWS.
Set up and maintain CI/CD pipelines using GitHub Actions and monitor backend performance under high load.

Requirements

5+ years of professional backend development experience.
Strong expertise with Node.js, NestJS, and PostgreSQL.
Experience building and scaling multi-tenant SaaS platforms.
Hands-on experience with AWS services (EC2, RDS, S3, CloudFront, CloudWatch).
Knowledge of security best practices including JWT, OAuth2, MFA, and SOC 2 principles.
Familiarity with CI/CD and GitHub Actions.

Nice to have

Experience integrating Stripe and/or DocuSign.
Knowledge of monitoring tools like Sentry, Datadog, CloudWatch.
Domain experience in marketplaces, fintech, or pharma.
Experience with RDKit in PostgreSQL.