Full-Stack Software Developer MERN Stack

Job Title: Full-Stack Software Developer – MERN Stack

Company: Zentroverse Global Private Limited

Location: Patna, Bihar

Employment Type: Full-time | On-site

Relocation: Candidate must be willing to relocate to Patna

About Zentroverse Global

Zentroverse Global Private Limited is a technology-driven startup recognized under the Bihar Startup Scheme, Government of Bihar. We develop innovative ERP, CRM, SaaS, web portal, business automation and AI-enabled solutions, primarily for automotive dealerships and other growing businesses.

We are looking for a capable and solution-oriented Full-Stack Software Developer who can contribute to the design, development, integration and scaling of our technology platforms.

Key Responsibilities

• Design, develop and maintain ERP, CRM and SaaS-based applications.
• Build responsive, secure and scalable web portals and dashboards.
• Develop reusable front-end and back-end modules using the MERN stack.
• Design RESTful APIs, webhooks and third-party system integrations.
• Manage complex and business-critical API integrations.
• Integrate Meta APIs, including:
• Meta Lead Ads API
• WhatsApp Cloud API
• Conversions API
• Graph API
• Webhooks and Embedded Signup
• Develop modules for lead management, sales, customer support, inventory, billing, reporting and workflow automation.
• Implement user roles, permissions, authentication and data-security controls.
• Integrate payment gateways, email, SMS, WhatsApp, IVR, autodialer and other communication platforms.
• Work with databases, cloud servers and deployment environments.
• Diagnose technical issues and improve application performance, reliability and scalability.
• Prepare technical documentation for APIs, system architecture and developed modules.
• Coordinate with management, designers and other developers to convert business requirements into functional software.

Essential Technical Skills

• Strong command of the MERN stack:
• MongoDB
• Express.js
• React.js
• Node.js
• Proficiency in JavaScript, TypeScript, HTML5 and CSS3.
• Experience developing ERP, CRM, SaaS platforms or other complex business applications.
• Strong understanding of REST APIs, webhooks, JSON and third-party integrations.
• Experience with authentication and authorization technologies such as JWT, OAuth 2.0 and role-based access control.
• Knowledge of Git, version control and collaborative development practices.
• Experience with cloud deployment, server management and database optimization.
• Understanding of application security, data privacy, logging, monitoring and error handling.
• Ability to write clean, modular, testable and well-documented code.

Preferred Skills

Candidates with exposure to any of the following will receive additional preference:

• Meta Graph API, Lead Ads API, WhatsApp Cloud API and Conversions API
• VoIP, SIP, IVR, autodialer, call routing or telephony integrations
• Artificial Intelligence, machine learning or Generative AI integrations
• AI chatbots, conversational automation and lead-scoring systems
• Socket.IO, WebSockets and real-time applications
• AWS, Azure, Google Cloud, Docker and CI/CD pipelines
• MySQL, PostgreSQL or other relational databases
• Microservices and multi-tenant SaaS architecture
• Mobile application development using React Native

Candidate Profile

• Bachelor's degree in Computer Science, Information Technology, Engineering or a related discipline is preferred.
• Relevant hands-on development experience with live projects.
• Strong analytical, debugging and problem-solving capabilities.
• Ability to understand complex business processes and translate them into scalable software modules.
• Comfortable working in a startup environment and taking end-to-end ownership of assigned projects.
• Good communication, teamwork and documentation skills.
• Must be willing to work on-site and relocate to Patna.

What We Offer

• Opportunity to build ERP, CRM, SaaS, AI and communication-automation products from the ground up.
• Exposure to automotive technology, digital transformation and enterprise automation projects.
• Direct involvement in product architecture and strategic technology decisions.
• Fast-growing startup environment with opportunities for learning and career growth.
• Compensation based on experience, technical capability and project exposure.

How to Apply

Interested candidates may send their updated CV, current CTC, expected CTC, notice period and links to their GitHub profile or completed projects to:

Email: [Confidential Information]

Company: Zentroverse Global Private Limited

Contact No: +91-9771495587

Location: Patna, Bihar

Subject line: Application for Full-Stack Software Developer – MERN