Senior Full-Stack Architect and Backend Engineer

VIVEK PRATAP SINGH

Senior Backend Developer PHP (Laravel) Node.js AWS Full Stack Engineer

+91-945******* *****.*****.***@*****.*** linkedin.com/in/vivek-singh-139454123 Varanasi, U.P. – India

SUMMARY

Senior Backend Developer with 15+ years of experience in PHP (Laravel) and Node.js development. Skilled in building scalable backend systems, REST APIs, and cloud-based applications using AWS. Experienced across SaaS, HRMS, healthcare, and e-commerce domains with strong focus on backend performance optimization and scalable application development. Hands-on experience handling 10k–20k concurrent users and improving system performance by 30–40%. KEY ACHIEVEMENTS

• Built microservices handling 50k+ API requests/day using event-driven design and Redis caching, reducing latency by 30%

• Implemented CI/CD pipelines using Jenkins, reducing release time by 50%

• Led teams of 5–6 developers and delivered production backend systems with high reliability and scalability

• Optimized APIs and database queries, improving response time by 30–40%

• Maintained 99.9% uptime for systems handling 20k concurrent users

• Integrated AI services (OpenAI, Mistral AI) to automate workflows and improve operational efficiency SKILLS

Backend: PHP (Laravel, CodeIgniter), Node.js (Express.js), REST APIs, Microservices Cloud & DevOps: AWS (Lambda, S3, SQS, API Gateway), Docker, Jenkins, CI/CD, Azure Databases: MySQL, PostgreSQL, MongoDB, Redis

Frontend: React, Vue.js, JavaScript

Architecture: System Design, Microservices, Event-driven Systems Performance: Caching (Redis), Query Optimization, Rate Limiting, API Throttling AI Integration: OpenAI, Mistral AI

WORK EXPERIENCE

Growth Catalysts Senior Full Stack Developer, Team Lead (Contract) Dec 2025 – Feb 2026

• Built Healthcare AI backend platform using Node.js and Vue.js with microservices-based design, enabling real- time processing (<200ms latency)

• Integrated OpenAI and Mistral AI to automate healthcare workflows and improve operational efficiency

• Implemented CI/CD pipelines using Jenkins for automated deployment and release management

• Implemented RBAC-based authentication and optimized PostgreSQL queries using indexing and performance tuning, improving API response time by ~30%

• Deployed and managed microservices on Azure ensuring stable and scalable backend infrastructure

• Used Grafana for system monitoring, identified bottlenecks, and improved API latency by ~25%

• Designed backend workflows for real-time AI processing Projects:

Healthcare AI Platform

• Built microservices-based Healthcare AI platform with real-time dashboard and monitoring system

• Implemented role-based access control (RBAC) for secure system operations

• Developed AI-powered workflow automation using OpenAI and Mistral AI Breathe Again Pvt. Ltd Backend Engineer Aug 2025 – Nov 2025

Built backend systems using AWS Lambda, SQS, and API Gateway for asynchronous processing and scalable API communication

Developed Shopify automation system for product, order, and inventory synchronization, reducing manual operations and improving data consistency

Implemented webhook-based real-time event processing for automated system updates.

Built admin dashboards for analytics and real-time system monitoring, improving operational visibility

Improved API performance and database scalability through caching and backend optimization techniques Projects:

Marketplace API Platform

• Built marketplace APIs using AWS Lambda, SQS, and API Gateway for asynchronous request processing

• Developed scalable backend workflows for high-traffic API communication Shopify Automation System

• Developed custom Shopify integration for product, order, and inventory management

• Implemented webhook-based synchronization for real-time data updates. Nexval InfoTech Pvt. Ltd. Senior Developer / Tech Lead Sep 2021 – Apr 2025

• Improved application scalability by refactoring monolithic modules into modular backend services

• Developed HRMS platform using Laravel, Vue.js, Redis queues, and AWS S3 for employee and payroll management

• Built real-time scheduling and service booking system with automated booking workflows

• Collaborated with international clients to develop and deliver production-grade backend applications

• Improved application performance by 30–40% through query optimization, caching, and backend performance tuning

Projects:

Service Booking & Scheduling System

Built using Node.js, MongoDB, and Vue.js SPA with real-time booking and scheduling engine.

Integrated AWS SES for automated notifications and asynchronous processing. HRMS System

Developed payroll, attendance, and employee lifecycle management modules using Laravel, Redis queues, and AWS S3 Kweb Technologies Lead Consultant / Senior Full Stack Engineer Nov 2016 – Aug 2021

• Led development and delivery of SaaS and e-commerce applications using Laravel, React, and Node.js

• Managed backend development, deployments, and project delivery across multiple projects

• Built scalable applications on AWS and improved API performance by up to 40% Projects:

Subscription-Based LMS Platform

• Built Laravel + React platform with Stripe subscription integration and AWS S3 storage KhanaAnywhere Food Delivery Platform

• Built food delivery application with real-time order tracking using CodeIgniter and MySQL Goyal's Software Solution Pvt. Ltd. Senior Software Developer / Tech Lead Mar 2010 – Oct 2016

• Managed client projects and delivered enterprise applications using PHP, CakePHP, CodeIgniter, and MySQL

• Developed inventory, billing, and real estate management systems with optimized database workflows

• Built admin panels, reporting modules, and role-based access systems for multi-user applications Projects:

Inventory & Billing System

• Developed billing, invoicing, and inventory management workflows using CakePHP and MySQL Real Estate Listing Platform

• Built property listing and management system using CodeIgniter, MySQL, and JavaScript Cyber Network PHP Developer May 2008 – Feb 2010

• Developed hospital management and portal systems using PHP and MySQL DOMAIN EXPERTISE

Healthcare Systems HRMS Platforms E-commerce Systems SaaS Applications Booking & Scheduling Systems

EDUCATION

Master of Computer Applications (MCA) – Indira Gandhi National Open University (IGNOU), India – 2009 Bachelor of Computer Applications (BCA) – Indira Gandhi National Open University (IGNOU), India – 2006

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