Software Development Engineer III - Users

HighLevel; India; On-site; INR 1,500,000 - 2,500,000; Full time

Job summary

HighLevel is looking for a seasoned Senior FullStack Engineer (SDE III) to join their Users Module team in India. You'll design and build secure user management systems, collaborating cross-functionally to enhance user experiences across a multi-tenant SaaS platform.

The ideal candidate has 4+ years of backend experience, in-depth knowledge of authentication/authorization, and a strong foundation in TypeScript and Node.js. This role offers a chance to mentor junior engineers and be involved in architectural discussions.

Qualifications

• 4+ years in backend engineering, preferably building user management systems.
• Proven work on authentication/authorization and IAM systems.
• Experience with multi-tenant SaaS and enterprise user workflows & permissions.

Responsibilities

• Write clean, maintainable code in TypeScript/JavaScript.
• Build and maintain robust RESTful APIs for user management and authentication.
• Design scalable multi-tenant user data models and schemas.
• Implement OAuth, JWT, and secure session management.
• Mentor junior engineers and participate in architecture discussions and code reviews.

Skills

TypeScript

JavaScript

Node.js

OAuth 2.0

JWT

MongoDB

Firestore

SQL

Google Cloud Platform (GCP)

Git

Elasticsearch

Job description

HighLevel is an AI-powered business operating system that gives agencies, entrepreneurs, and SMBs the infrastructure to build, automate, and scale. Today we support businesses in over 150 countries.

About The Role

We’re looking for a seasoned Senior FullStack Engineer (SDE III) to join our Users Module team, where you'll design and build scalable, secure user management systems. This includes working on authentication, authorization, and complex permission hierarchies across a multi-tenant SaaS platform. You’ll collaborate cross-functionally to deliver reliable, performant, and secure experiences for millions of users. This role is ideal for someone who thrives in product-oriented backend systems, has a strong full stack foundation, and is comfortable using AI tools to enhance development speed and effectiveness.

Responsibilities

• Write clean, maintainable code in TypeScript/JavaScript
• Build and maintain robust RESTful APIs for user management and authentication
• Design scalable multi-tenant user data models and schemas
• Implement OAuth, JWT, and secure session management
• Design and implement IAM v2 systems with RBAC and granular permissions
• Build features like user impersonation, delegation, and permission templates
• Create and manage token validation and session lifecycle flows
• Architect scalable models using MongoDB, Firestore, and SQL
• Integrate Elasticsearch for advanced user search and filtering
• Sync user data across multiple stores and implement audit logging
• Build secure auth flows with encryption, token validation, and data privacy controls
• Ensure compliance with GDPR and similar regulations
• Create audit trails and compliance reporting for user actions
• Optimize queries, implement caching strategies, and handle high-volume user operations
• Build systems that scale across enterprise-grade customer environments
• Partner with product, security, and platform teams to deliver features
• Collaborate with DevOps on deployment and infrastructure
• Mentor junior engineers and participate in architecture discussions and code reviews

Required Candidate Profile

• 4+ years in backend engineering, preferably building user management systems
• Proven work on authentication/authorization and IAM systems
• Experience with multi-tenant SaaS and enterprise user workflows & permissions

Required Technical Skills

• Languages: TypeScript, JavaScript, Node.js
• Frameworks: NestJS, Express.js
• Databases: MongoDB, Firestore, SQL
• Authentication: OAuth 2.0, JWT, session management
• Cloud: Google Cloud Platform (GCP)
• Messaging: Google Cloud Pub/Sub
• DevOps: Git, CI/CD
• Search: Elasticsearch, Clickhouse
• Architecture: Microservices, Event-driven architecture, IAM, RBAC

EEO Statement

The company is an Equal Opportunity Employer. As an employer subject to affirmative action regulations, we invite you to voluntarily provide the following demographic information. This information is used solely for compliance with government record‑keeping, reporting, and other legal requirements. Providing this information is voluntary and refusing to do so will not affect your application status. This data will be kept separate from your application and will not be used in the hiring decision.