Full Stack Developer – AI Agent Platform (Express AI)

Job Title: Full-Stack MERN Developer (5–8 Years Experience)

Location: Borivali, Mumbai (Onsite)

Experience: 6–8 Years

Joining: Immediate Joiners

Employment Type: Full-time

Job Overview

We are looking for an experienced Full-Stack MERN Developer to join our engineering team in Borivali, Mumbai. The ideal candidate should have strong hands-on experience building scalable web applications using React, Node.js, Express, and MongoDB, with a solid understanding of REST APIs, microservices architecture, performance optimization, and cloud infrastructure.

You will work on consumer-facing applications, handle large datasets, and contribute to building reliable, high-performance systems.

Key Responsibilities

• Design, develop, and maintain full-stack web applications using MERN stack
• Build scalable and secure RESTful APIs and backend services using Node.js & Express
• Develop reusable and high-performance React components with proper state management
• Implement microservices-based architecture and inter-service communication
• Optimize application performance at both frontend and backend levels
• Work with MongoDB for data modeling, indexing, and performance tuning
• Handle large datasets efficiently and ensure system reliability
• Implement logging, tracing, and monitoring for production-ready applications
• Collaborate with product, frontend, backend, and DevOps teams
• Write clean, maintainable, and well-documented code

Technical Requirements

Backend

• Strong hands-on experience with Node.js & Express.js
• Expertise in building REST APIs and backend business logic
• Strong understanding of async programming (Callbacks, Promises, Async/Await)
• Experience with microservices architecture
• Hands-on experience with MongoDB (Expert level)
• Working knowledge of PostgreSQL / MySQL
• Experience with Kafka or other message queue systems
• Familiarity with Bull / job schedulers

Frontend

• Strong experience with React.js
• Hands-on experience with state management (Redux, Context API, or similar)
• Good understanding of HTML, CSS, AJAX
• Experience with performance optimization techniques in React

Infrastructure & Cloud

• Experience with Docker and Kubernetes (K8s)
• Hands-on exposure to AWS services such as EC2, S3, ELB, AutoScaling, CloudFront
• Understanding of CI/CD pipelines is a plus

Core Computer Science

• Good understanding of Data Structures & Algorithms
• Solid knowledge of Operating Systems fundamentals

Good to Have

• Experience with Redis for caching
• Exposure to Vue.js
• Experience working on consumer-facing web or app products
• Strong debugging and problem-solving skills
• Familiarity with application monitoring tools (logs, metrics, tracing)

What We’re Looking For

• Strong problem-solving mindset and ownership attitude
• Ability to learn new tools and technologies quickly
• Comfortable working in fast-paced, production-driven environments
• Immediate or short-notice joiners preferred

Here's the full description — paste-ready for Naukri. Use the B button for the bold headers and the bullet-list button for the lists as you go.

Shopify and AI Developer – Full-Time Remote

AlphaPixels Media is a Canadian digital marketing agency serving clients across North America. We build complete growth systems for our clients: e-commerce stores, CRM pipelines, AI tools, and marketing automation. We are hiring a technical all-rounder who lives at the intersection of web development, automation, and AI, and who takes pride in clean, finished work.

The role

You will be the technical backbone of our client delivery. Your first project is a complete Shopify store build for an established North American business, followed by ongoing store builds, CRM setups, automation pipelines, and AI tool deployments across our client base. You take a brief and deliver working systems.

What you will do

• Build Shopify stores from scratch: theme setup, customization, custom sections (Liquid, HTML, CSS, JavaScript), payments, shipping, taxes, multi-currency
• Build conversion-focused product pages and landing pages
• Implement 301 redirect maps for site migrations without losing SEO rankings
• Set up and manage CRM systems: pipelines, calendars, forms, SMS and email sequences, workflow automations (GoHighLevel experience is a strong advantage)
• Build automations with Make (Integromat), Zapier, webhooks, and REST APIs connecting stores, CRMs, sheets, and ad platforms
• Deploy and configure AI tools: website chatbots, AI receptionists and voice agents, and content pipelines using OpenAI, Claude, or similar APIs
• Install tracking (Meta pixel, GA4, conversion APIs) and third-party widgets
• Maintain, troubleshoot, and improve everything you build

Must have

• 3+ years hands-on web development with live Shopify stores you personally built
• Strong Liquid, HTML, CSS, JavaScript
• Real experience building automations with Make, Zapier, or direct API integrations
• Working knowledge of AI APIs and prompt-based tools (chatbots, LLM integrations)
• Comfortable using AI coding tools (Claude Code, Cursor, or similar) in your daily workflow
• At least one full store migration or replatforming experience
• Strong written English and reliable daily communication
• Self-managed: you take a brief and return finished, tested work

Strong advantage

• GoHighLevel (sub-accounts, workflows, snapshots)
• Voice AI platforms (Vapi, Retell, ElevenLabs or similar)
• Shopify Markets / multi-currency
• Basic SEO (redirects, page speed, structured data)
• Figma to web workflow

Hours

Flexible, with a minimum 3-hour overlap with Canadian Central Time mornings (approximately 6:30 PM to 9:30 PM IST).

How to apply

Applications missing any of the following will not be reviewed:

1. A Loom video (3 to 5 minutes) showing one Shopify store you built AND one automation or AI tool you built. Walk us through what it does and the decisions you made.
2. Links to live work: stores, automations, or tools, with your specific role on each
3. Your expected monthly salary
4. Begin your application with the word COPPER to confirm you read this fully

Shortlisted candidates complete a small test task before final interviews.

Roles & Responsibilities :

• Develop and implement various tests for software applications.
• Evaluate designs and ensure compliance to business requirements.
• Prepare and update technical documents and develop Dot NET processes for various systems.
• Develop and perform tests on various software applications.
• Analyze architecture design and provide consultation to Dot net teams.
• Provide technical support and design enhancement for various applications.
• Analyze systems and develop solutions for the same.
• Experience in writing web applications using ASP.net MVC 4.0/4.5, C#, Entity Framework, SQL Server 2008/12
• Ability to write SQL queries and store procedures is required.
• Must be able to use JQuery to work on the user interface.
• Entity Framework as the data layer must be able to be used.
• Bootstrap, AngularJS, and Web API knowledge are advantages as well as experience with Javascript, AJAX, and JQuery.
• Solid understanding of relational database fundamentals in SQL Server 2008, developing stored procedures, and simple/complex SQL queries.
• Develop architecture documents for various applications.
• Coordinate with customers and analyze all user requirements.
• Analyze technical documents and determine problems in Dot NET application and provide consultation for resolution.

Skills Required:

• ASP.NET, VB.Net, C#, MySQL, SQL, JavaScript, Web services, and MVC
• Team Handling
• Good in documentation and preparation of reports

Position Title

Full Stack Developer

Minimum Qualifications

Bachelor's degree in Computer Science or equivalent practical experience.

1 year of relevant work experience developing software with:

Preferred Qualifications

Master’s degree, further education or equivalent practical experience in Engineering, Computer Science or other technical related field.

Experience with all of the above + the following areas:

1. Full Stack Development (front end and backend),
2. TypeScript
3. React Native
4. Javascript
5. AWS

Note: Development experience with Unix / Linux and the ability to learn other coding languages as needed will be favourable.

About The Job

1. ByzWiz Infratech was founded on the belief that every human is innately and naturally talented and gifted. It is our endeavour to create and deploy products and services that help people monetize their passions, talents and creativity by enabling them to harness the power of the internet.
2. ByzWiz requires software engineers to help develop next-generation technologies that will allow billions of users to connect and conduct businesses online, forming a new paradigm of interaction in order to encourage social economic activity.
3. As an important part of the core development team, your role will extend to all areas of software development activity.
4. We need our engineers to be responsible, proactive and enthusiastic creative thinkers and problem solvers. As we grow, we expect our engineers to take on leadership roles with the ability to form and manage their own teams.

Responsibilities

1. Design, develop, test, deploy, maintain, and improve software and new user-facing features in Byzwiz products.
2. Manage individual priorities, deadlines, and deliverables.
3. Write client-side code for web-based applications, create fast, easy-to-use, high volume production applications, and develop prototypes quickly.
4. Contribute to engineering efforts from planning and organization to execution and delivery to solve complex engineering problems.

• 8 - 11 years of experience in software development with at least 5 years on GUI development
• Experience on Java, HTML, CSS and Java script
• Experience with write SQL or equivalent queries on relational or NoSQL databases e.g. Oracle, PostgreSQL, Couchbase, MongoDB, Cassandra

• Implementation of a robust set of services and APIs to power the web application
• Building reusable code and libraries for future use
• Optimization of the application for maximum speed and scalability
• Implementation of security and data protection
• Integration of the front-end and back-end aspects of the web application
• Design/Architect Application Architecture
• Design/Architect Database Design/Architecture
• Provide solutions for Optimizing Application & Database Performance.
• Interacting with clients and understanding their tech requirements, to implement them accurately as per needs.
• Coordinate with team for task management.
• Understanding of MVC Architecture
• Proficient knowledge of PHP and Laravel Framework
• Knowledge of advanced JavaScript libraries and frameworks such as AngularJS, ReactJS
• Understanding of fundamental design principles behind a scalable application
• Knowledge to implement automated testing platforms and unit tests
• Proficient understanding of code versioning tools (Git)