07/29/2025 updated

**** ******** ****
100 % available

Backend | NodeJs | NestJS | PHP | GraphQL

Bhatpara, India
Worldwide
B.Sc
Bhatpara, India
Worldwide
B.Sc

Profile attachments

Cover Letter.pdf
sumit-paul.pdf

Clean Code PrinciplesHTMLJavaScript (Programming Language)PHP (Programming Language)Application Programming Interfaces (APIs)Amazon Web ServicesAuthenticationsBackup DevicesCascading Style Sheets (CSS)CodeIgniterContinuous IntegrationLinuxDevOpsPython (Programming Language)PostgreSQLMongoDBMySQLNode.JsNoSQLOAuthPerformance TuningRole-Based Access ControlRedisSQL DatabasesSystems ArchitectureTwilioTypeScriptFirebaseIndexerBackendGitBuild ManagementStripeSolid PrinciplesGraphqlApi DesignNestJSRestful ApiDatabase AdministrationDockerMicroservices
  • API Development & Integration: Design and build RESTful or GraphQL APIs, handle data securely, and integrate third-party services (Stripe, Twilio, Firebase, etc.).
  • Database Management: Schema design and optimization (SQL/NoSQL), indexing, migrations, backups, and performance tuning.
  • Authentication & Authorization: Implement OAuth2, JWT, session-based auth, and RBAC.
  • Performance Optimization: Optimize response times, memory usage, and DB queries; use Redis caching and background queues.
  • DevOps & Deployment: Dockerize apps and set up CI/CD pipelines.
  • System Architecture: Design modular microservice systems with clean code and SOLID principles.
My Tech Stack:
  • Linux, Windows
  • JavaScript, TypeScript, PHP, Python, HTML, CSS
  • Node.js, Express, NestJS, CodeIgniter
  • PostgreSQL, MySQL, MongoDB
  • Git, Docker, Redis, CI/CD, AWS
  • REST API, GraphQL, Microservices

Languages

EnglishFluent

Project history

Senior Software Developer

Technoexponent

Internet & IT

250-500 team member

As a Senior Backend Software Developer, I am responsible for architecting and building scalable, secure, and high-performance backend systems that power modern web and mobile applications. I work closely with clients, product owners, and cross-functional teams to understand business objectives and translate them into efficient backend solutions.
My core responsibilities include:
  • Leading the design and development of backend architecture using modern technologies and best practices.
  • Collaborating with clients and stakeholders to gather requirements and propose technical solutions aligned with business goals.
  • Selecting appropriate tech stacks, frameworks, and tools based on project needs.
  • Writing clean, maintainable, and well-documented code.
  • Building and maintaining RESTful or GraphQL APIs, microservices, and database systems (SQL/NoSQL).
  • Ensuring system reliability, performance optimization, and secure data handling.
  • Managing version control, branching strategies, and CI/CD pipelines.
  • Performing code reviews, mentoring junior developers, and facilitating knowledge sharing within the team.
  • Handling deployment and monitoring in cloud/on-prem environments (e.g., AWS, Docker, Kubernetes).

Senior Software Developer

Centreax Technologies

Internet & IT

50-250 team member

As a Senior Backend Software Developer, I am responsible for architecting and building scalable, secure, and high-performance backend systems that power modern web and mobile applications. I work closely with clients, product owners, and cross-functional teams to understand business objectives and translate them into efficient backend solutions.
My core responsibilities include:
  • Leading the design and development of backend architecture using modern technologies and best practices.
  • Collaborating with clients and stakeholders to gather requirements and propose technical solutions aligned with business goals.
  • Writing clean, maintainable, and well-documented code.
  • Building and maintaining features, and database systems (SQL/NoSQL).
  • Ensuring system reliability, performance optimization, and secure data handling.
  • Handling deployment and monitoring in cloud/on-prem environments (e.g., AWS, Docker, Kubernetes).

Web Developer

Cygido IT Solution Pvt.Ltd

Internet & IT

10-50 team member

As a Software Developer, I am responsible for designing, developing, testing, and maintaining software applications that align with user and business requirements. My role involves writing clean, scalable code, collaborating with cross-functional teams, integrating third-party APIs and services, and ensuring software performance, security, and maintainability.
Key responsibilities include:
  • Analyzing client or project requirements and converting them into technical specifications.
  • Developing backend and/or frontend components using modern frameworks and tools.
  • Implementing APIs, authentication, and data integrations.
  • Managing version control using Git 

Certificates

RHCSA

Webel Informatics

2020

RHCE

Webel Informatics

2020

Software Development

APLL Education Limited

2019


Portfolio

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AI Security

Developed an intelligent security system integrated with AI-based object and behavior detection to enhance real-time surveillance capabilities. The system leverages computer vision and machine learning algorithms to identify and alert for potential threats such as unauthorized access, weapons, or suspicious movement.
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Doctor Scan

Developed a comprehensive medical consultation platform designed to streamline doctor-patient interactions across multiple desktop applications in real time. The system supports secure appointment booking, live syncing between multiple desktops (e.g., reception, doctor, and admin), and centralized management of patient records
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Casatua

Restaurant booking
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Govlia

Developed a scalable, feature-rich e-learning platform that supports multiple vendors (instructors or institutions) to offer courses, manage students, and conduct online classes. The platform functions as a marketplace where vendors can create and sell educational content while learners can browse, enroll, and track their learning journey.
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EEXCOM

Built a robust B2B platform that connects businesses, manufacturers, wholesalers, and service providers to discover, negotiate, and transact efficiently. The system supports vendor onboarding, product catalog management, bulk ordering, and business communication—all in one ecosystem.
item-5

Wine Shop

Developed a specialized e-commerce platform tailored for wine shops to sell products online, manage inventory, and deliver a seamless shopping experience for customers—while remaining compliant with local laws regarding alcohol sales and delivery.
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Anandapub

Led the enhancement and performance optimization of AnandaPublisher, a digital platform for selling and managing Bengali literary content, including books, magazines, and subscriptions.
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Thirdbell

Developed a fully-featured e-commerce platform tailored for theaters to sell tickets online, featuring a dynamic seating layout, real-time seat selection, and secure booking/payment workflows.
item-8

GymeSoft admin Panel

Developed a centralized internal management platform for gym owners to streamline daily operations, track financials, manage memberships, and onboard trainers—all within a secure and user-friendly interface.
item-9

SMTP Master

Built a scalable and secure Email Service Provider platform that enables businesses to send bulk emails, automate campaigns, manage subscribers, and track engagement with detailed analytics. Designed to serve marketing teams, SaaS platforms, and enterprise clients with high email volume needs.

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