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Skills

Technologies, platforms, and working practices used across product engineering, real-time systems, and cloud delivery.

Skill evidence

Node.js

Supported by 21 projects and 5 professional roles in this portfolio.

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Professional experience

MyMedicalHub International Ltd.

Sep 2022 - Sep 2025 · Mohakhali, Dhaka, Bangladesh

  1. Software Engineer

    Oct 2023 - Sep 2025

    Boosted application performance by 40% by stripping legacy UI libraries and optimizing React rendering cycles. Achieved 70% infrastructure cost reduction by migrating Azure VMs to App Service and automating CI/CD pipelines. Deployed a HIPAA-compliant SSO system with multi-role access, OAuth integration, and strict CSP headers.

    • React.js
    • Tailwind CSS
    • Node.js
    • Microsoft Azure
    • Docker
    • CI/CD
    • Konva.js
    • Figma

  2. Junior Software Engineer

    Sep 2022 - Sep 2023

    Reduced patient diagnosis time by 25% and achieved 95% accuracy by integrating real-time AI analysis and custom algorithms. Integrated a WebRTC video pipeline stabilizing remote consultations and reducing call latency. Developed a JWT-based REST API client layer with built-in XSS and CSRF protection.

    • React.js
    • Bootstrap
    • Sass
    • WebRTC
    • Node.js
    • Express.js
    • PostgreSQL
    • Responsive Web Design

Infomax

Freelance Developer · Mar 2024 - Mar 2024

Built the shared API foundation for an MCQ learning platform, with versioned Express routes, request protection, email error notifications, and deployment configuration. Learning-domain operations remain scaffold implementations.

More about this engagement

Organized questions, exams, courses, enrolment, and results into versioned Express modules for an MCQ learning platform. Centralized controller wrappers, response formatting, and error handling to give new features a consistent API structure. Added Helmet security headers, request limits, timeouts, and rate limiting at the application boundary. Included Nodemailer error notifications and Docker/PM2 deployment configuration. The reviewed implementation establishes API infrastructure; persisted learning workflows, exam execution, and result storage remain incomplete.

Related work

  • JavaScript
  • Node.js
  • Express.js
  • REST APIs
  • Helmet
  • express-rate-limit
  • Nodemailer
  • Docker
  • PM2

TalendIT

Freelance Developer · Oct 2023 - Nov 2023

Built school information interfaces, Google Drive admission-document storage, and survey APIs with separate definitions, templates, and completed records. Co-developed a PHP/MariaDB catalog and administration project.

More about this engagement

Built Next.js and React school pages for admissions, notices, routines, results, staff, and galleries, with responsive navigation, Swiper galleries, and a Google Maps integration. The frontend uses local sample content and an in-memory admin demonstration. In the school backend, implemented Google Drive file handling and stored admission-document identifiers and links in MongoDB. Separated controllers, persistence services, and Joi input validation. Built Mongoose survey CRUD services, keeping survey definitions, reusable templates, and completed school/location records separate. Co-developed TechnoFire's PHP, MySQLi, and MariaDB catalog and administration codebase with Abid Hasan Piash; individual ownership of its features is not established. These repositories document prototypes and implementation scope, not verified production deployment.

Related work

  • JavaScript
  • Next.js
  • React
  • Tailwind CSS
  • Swiper
  • Google Maps API
  • Google Drive API
  • Node.js
  • Express.js
  • MongoDB
  • Mongoose
  • Joi
  • PHP
  • MariaDB
  • MySQLi
  • Bootstrap

nDevers

Freelance Developer · Apr 2022 - Aug 2022

Built React inventory workflows with Firebase Authentication, stock-update and delivery requests, and user-specific item views. Implemented a separate Express/MongoDB inventory API for products and supporting business records.

More about this engagement

Built inventory browsing and item-management interfaces with React, React Router, and Tailwind CSS. Integrated Firebase Authentication, shared sign-in helpers, and an email/token request flow, using Axios for stock updates, delivery actions, and user-specific item requests. POSDash depends on its own companion server; it is not the client for the separately documented inventory API. In that Express and MongoDB backend, implemented product reads, creates, updates, and deletes, with pharmacy and non-pharmacy resource routes. Organized orders, returns, suppliers, customers, and employees into dedicated endpoints. The reviewed legacy source contains incomplete and miswired routes, so the portfolio describes implemented components without claiming complete end-to-end operation.

Related work

  • JavaScript
  • React
  • React Router
  • Tailwind CSS
  • Firebase Authentication
  • Axios
  • REST APIs
  • Node.js
  • Express.js
  • MongoDB

Projects

Bangladesh Location Registry interface preview

dataset

Bangladesh Location Registry

Versioned, provenance-rich Bangladesh location registry with census, postal, facility, ward, and infrastructure data from government-published sources.

  • administrative-divisions
  • bangladesh
  • census
  • data-provenance
  • dataset
Case study

Preview not publicly available

No public screenshot has been published for this project.

skill

release-agent-skill

An end-to-end release skill for Codex and Claude Code that validates portable Agent Skills, synchronizes release metadata, inspects npm archives, executes explicitly authorized publication stages, and verifies public artifacts.

  • agent-skills
  • ai-agents
  • claude-code
  • codex
  • developer-tools
Case studynpm
http-status-lite interface preview

package

http-status-lite

Tiny, standards-backed, type-safe HTTP status codes for Node.js and browsers.

  • browser
  • commonjs
  • esm
  • fetch
  • http
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

verify-github-npm-release

A release-verification skill for Codex and Claude Code that compares local Git state, GitHub tags and releases, npm versions and dist-tags, CI evidence, advertised commands, and optional catalog records without changing release state.

  • agent-skills
  • ai-agents
  • claude-code
  • codex
  • continuous-integration
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

make-project-github-ready

A repository-readiness skill for Codex and Claude Code that evaluates identity, metadata, topics, community health, security guidance, CI, and Git state before applying authorized local or GitHub changes.

  • agent-skills
  • ai-agents
  • claude-code
  • codex
  • continuous-integration
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

make-app-netlify-ready

A deployment-readiness skill for Codex and Claude Code that detects framework and runtime behavior, validates Netlify configuration and output paths, and prepares evidence-backed local repairs without implicitly deploying.

  • agent-skills
  • ai-agents
  • claude-code
  • codex
  • deployment
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

find-ui-inconsistencies

A frontend-review skill for Codex and Claude Code that evaluates typography, spacing, color, layout, shared UI, responsive behavior, skeletons, motion, and visible accessibility states while preserving intentional design direction.

  • accessibility
  • agent-skills
  • ai-agents
  • claude-code
  • codex
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

fix-project-metadata-mismatches

An evidence-first maintenance skill for Codex and Claude Code that detects metadata drift across manifests, lockfiles, documentation, deployment configuration, and catalogs, then aligns local files only when requested.

  • agent-skills
  • ai-agents
  • automation
  • claude-code
  • codex
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

publish-verified-github-release

A cross-provider release-writing skill that gathers Git history, manifests, changelogs, and validation evidence, drafts user-focused notes, and changes GitHub release state only with explicit authorization.

  • agent-skills
  • ai-agents
  • changelog
  • claude-code
  • codex
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

update-skillfolio-catalog

A catalog-maintenance skill that resolves public package and repository evidence, updates the correct local authorities, regenerates derived data, and verifies the target Skillfolio application without implicitly deploying it.

  • agent-skills
  • ai-agents
  • catalog-management
  • claude-code
  • codex
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

write-complete-project-readme

An evidence-driven, project-type-aware skill for Codex and Claude Code that creates or regenerates a software project's root README with portable installation and deterministic validation.

  • agent-skills
  • claude-code
  • codex
  • documentation
  • readme
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

fix-social-link-previews

An evidence-based skill for Codex and Claude Code that validates crawler-visible Open Graph and Twitter Card metadata, repairs framework-native metadata, and creates branded 1200×630 preview assets when needed.

  • agent-skills
  • claude-code
  • codex
  • developer-tools
  • npm-package
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

build-android-app-from-web

An evidence-driven mobile-development skill that discovers a web application's routes, workflows, data, states, and integrations; maps every capability to an Android disposition; guides native platform adaptation; and verifies that no feature is silently omitted.

  • agent-skills
  • android
  • claude-code
  • codex
  • feature-parity
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

deploy-prebuilt-app-to-netlify

A deployment skill that validates local output, blocks unsafe artifact trees, chooses the appropriate Netlify CLI flow, performs only explicitly authorized remote mutations, and verifies the deployed result.

  • agent-skills
  • claude-code
  • codex
  • deployment
  • netlify
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

skill

integrate-supportkori-widget

A SupportKori-specific frontend skill that checks lifecycle mounting, CSP and extension constraints, native visual treatment, embedded-panel behavior, and runtime evidence while preserving authorization boundaries.

  • agent-skills
  • browser-extension
  • claude-code
  • codex
  • content-security-policy
Case studynpm

Preview not publicly available

No public screenshot has been published for this project.

api

GitHub README Counter

Express service that increments a file-backed counter and returns the current value as a customizable SVG image.

  • api
  • counter
  • customizable-svg
  • dynamic-svg
  • expressjs
Case study

Preview not publicly available

This professional project is documented without a public screenshot.

api

MCQ Topper Backend

An Express API foundation for an MCQ learning platform, with versioned domain routes, shared response handling, request middleware, and email error notifications. Domain operations remain scaffold implementations.

Client: Infomax · View client experience

  • mcq
  • education
  • rest-api
  • backend
  • api-scaffold
Case study

Preview not publicly available

This professional project is documented without a public screenshot.

api

School Management Backend

A modular Express and MongoDB prototype for school administration and website content, with admission resources, student records, academic downloads, and Google Drive file integration.

Client: TalendIT · View client experience

  • education
  • school-management
  • rest-api
  • file-storage
Case study

Preview not publicly available

This professional project is documented without a public screenshot.

api

Survey Module Backend

An Express and Mongoose API prototype for school-dropout research, separating surveys, templates, and completed survey records alongside user, role, permission, and authentication modules.

Client: TalendIT · View client experience

  • surveys
  • education-research
  • rest-api
  • data-modeling
Case study

Preview not publicly available

This professional project is documented without a public screenshot.

api

Inventory Management System Server

A legacy Express and MongoDB API organizing pharmacy and non-pharmacy products, orders, returns, customers, employees, and supplier records into resource routers.

Client: nDevers · View client experience

  • legacy-project
  • inventory
Case study

website

Project Management

A collaborative project-management application with React dashboards for tasks, subtasks, bugs, discussions, members, and project progress. Montasim contributed frontend development and responsive Tailwind CSS interfaces.

  • project-management
  • team-collaboration
  • task-management
  • frontend
Case study