Senior Backend Engineer & Full-Stack Architect

VIVEK PRATAP SINGH

Senior Backend Developer PHP/Laravel Tech Lead Node.js AWS Microservices

+91-945******* *****.*****.***@*****.*** LinkedIn Varanasi, Uttar Pradesh – India SUMMARY

Senior Backend Developer and Tech Lead with 14+ years of experience building web applications with PHP and React, following strong Object-Oriented Programming principles and code-refactoring practices to improve performance and maintainability. Experienced with containerization using Docker, version control with GIT, and working confidently in Linux-based environments. Skilled across the full stack — Laravel, Node.js, MySQL, Redis, and modern JavaScript/React and Vue.js front ends — with hands-on exposure to CI/CD pipelines (Jenkins, GitLab) and cloud deployment on AWS. Proven track record of leading and mentoring development teams, troubleshooting complex technical issues, collaborating with cross-functional teams of designers and product managers, and delivering 40+ commercial projects. KEY ACHIEVEMENTS

• Delivered scalable, full-stack web applications using PHP, Laravel, React, Node.js and AWS across Healthcare, HRMS, SaaS, E-commerce, and Marketplace domains.

• Refactored monolithic PHP codebases into modular, service-oriented architecture, improving performance and maintainability by up to 40%.

• Designed and developed high-performance RESTful APIs and microservices handling 50K+ requests per day, built and deployed in Docker containers.

• Built cloud-based backend and front-end solutions using AWS (Lambda, SQS, API Gateway, S3) with CI/CD pipelines

(Jenkins) to streamline deployment.

• Built responsive, user-facing interfaces with React.js and Vue.js, collaborating directly with UI/UX designers to turn designs into functional front ends.

• Worked daily in Linux-based environments, using GIT for version control and command-line tooling to manage the full development lifecycle.

• Led code reviews, mentored developers, and delivered 40+ commercial projects while collaborating closely with cross-functional teams.

SKILLS

Languages & Frameworks: PHP, Laravel, CodeIgniter, JavaScript, TypeScript, React.js, Vue.js, Node.js, HTML, CSS OOP & Architecture: Object-Oriented Programming, Code Refactoring, Microservices, SOLID Principles, Design Patterns, System Design

Containers & DevOps: Docker, CI/CD, Jenkins, GitLab (familiar), Ansible (familiar), AWS (Lambda, SQS, API Gateway, S3), Azure

Databases: MySQL, PostgreSQL, MongoDB, Redis

Version Control & Tools: GIT, GitHub, Linux/command-line administration Authentication & Security: JWT, OAuth2, RBAC

APIs & Real-Time: RESTful APIs, WebSockets, Event-Driven Architecture Other: Performance & Query Optimization, Grafana Monitoring, OpenAI / Mistral AI API Integration WORK EXPERIENCE

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

• Developed a Healthcare AI platform using Node.js, microservices, PostgreSQL, Vue.js, and RESTful APIs, delivering sub-200ms response times for real-time processing.

• Integrated OpenAI and Mistral AI APIs to automate healthcare workflows and implemented secure authentication using JWT and RBAC.

• Designed and optimized backend services, PostgreSQL queries, and REST APIs to improve application performance, scalability, and reliability.

• Implemented CI/CD pipelines and deployed applications on Azure, streamlining release management and improving deployment efficiency.

• Collaborated with cross-functional teams, participated in code reviews, and delivered end-to-end full-stack features from development to production deployment.

Backend Engineer (Contract) — Breathe Again Pvt. Ltd Aug 2025 – Nov 2025

• Developed serverless backend applications using AWS Lambda, API Gateway, SQS, RESTful APIs, and PHP, enabling scalable asynchronous processing for high-traffic business workflows.

• Built Shopify integrations for product, inventory, and order synchronization using webhooks and event-driven architecture, ensuring real-time data consistency.

• Optimized backend APIs and database queries, improving application performance, monitoring, and overall system reliability.

• Developed internal admin modules and analytics dashboards while collaborating with cross-functional teams to deliver scalable backend solutions.

Senior PHP Developer — Nexval InfoTech Pvt. Ltd.

Sep 2021 – Apr 2025

• Designed and developed scalable HRMS applications using PHP, Laravel, MySQL, Redis, and RESTful APIs, delivering modules for payroll, attendance, employee lifecycle management, and workflow automation.

• Refactored monolithic applications into modular, service-oriented architecture using OOP best practices, improving scalability, maintainability, and overall performance by up to 40%.

• Optimized MySQL queries, implemented Redis caching, integrated RabbitMQ queues, and utilized AWS S3 to improve application performance and system reliability.

• Developed real-time booking and scheduling modules using Node.js, WebSockets, MongoDB, and Vue.js, supporting business-critical operations.

• Participated in requirement discussions, collaborated with cross-functional teams, conducted code reviews, and mentored junior developers to deliver high-quality software solutions.

• Contributed throughout the software development lifecycle, including development, testing, deployment, production support, and performance optimization on Linux-based servers using GIT for version control. Lead Consultant / Senior Full Stack Engineer — Kweb Technologies Nov 2016 – Aug 2021

• Designed and developed scalable SaaS, E-commerce, and business applications using PHP, Laravel, CodeIgniter, MySQL, and AWS for multiple client projects.

• Built a subscription-based LMS platform from scratch with Stripe payment integration, OAuth2/JWT authentication, role-based access control, and AWS S3 storage, enabling secure SaaS operations.

• Developed and optimized RESTful APIs and backend services, improving performance through query optimization, caching strategies, and efficient database design.

• Contributed to front-end integrations using React.js, translating UI/UX designs into functional, user-friendly interfaces while primarily focusing on backend architecture, API development, and system design.

• Delivered end-to-end solutions including requirement analysis, development, deployment, and production support across multiple SaaS and enterprise applications.

Senior Software Developer / Tech Lead — Goyal's Software Solution Pvt. Ltd. Mar 2010 – Oct 2016

• Worked on client-based startup projects delivering web applications using PHP, CakePHP, CodeIgniter, and MySQL.

• Designed and developed enterprise applications including inventory management, billing systems, and real estate platforms, ensuring scalable and maintainable architecture for small and mid-size businesses.

• Implemented database optimization, stored procedures, and reporting modules, improving system performance and data processing efficiency.

• Developed role-based access control (RBAC) and business workflow modules tailored to client-specific requirements. PHP Developer — Cyber Network

May 2008 – Feb 2010

• Developed and maintained hospital management and web portal applications using PHP and MySQL.

• Worked on backend modules including data management, user authentication, and basic reporting features for internal systems.

DOMAIN EXPERTISE

Healthcare Systems • HRMS Platforms • E-commerce & Marketplace • SaaS Applications • Booking & Scheduling Systems • AI-powered Workflow Automation

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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