
MD Hasibul Hasan
Verified Expert in Engineering
JavaScript Developer
Dhaka, Dhaka Division, Bangladesh
Toptal member since June 12, 2026
Hasib is a full-stack developer with 8 years of experience building production-ready web applications and digital products. He specializes in scalable solutions across SaaS, healthcare, booking, eCommerce, analytics, and AI. With strong expertise in modern application architecture, back-end systems, and user-focused development, he turns complex business requirements into reliable, maintainable products.
Portfolio
Experience
- JavaScript - 10 years
- Web Development - 8 years
- API Development - 8 years
- Web Applications - 6 years
- Next.js - 6 years
- Node.js - 6 years
- Python - 4 years
- TypeScript - 4 years
Preferred Environment
Next.js, Node.js, Web Development, Web Applications, NestJS, Python, JavaScript, TypeScript, Websites, Software Development
The most amazing...
...thing: I built and delivered professional software products end-to-end, covering architecture, back-end systems, full-stack development, and deployment.
Work Experience
Chief Executive Officer
Elevate IT Systems
- Lead the technical and strategic direction of software products and digital solutions across multiple clients and business initiatives.
- Manage a multidisciplinary team of developers, designers, and project managers responsible for delivering production-ready software products.
- Oversee the complete product development lifecycle, from requirements analysis and architecture through development, testing, deployment, and ongoing optimization.
- Drive development of modern web applications, SaaS platforms, eCommerce products, and custom business software.
- Establish engineering standards, development workflows, code review practices, and quality processes across projects.
- Design scalable software architectures integrating modern front-end frameworks, back-end services, cloud infrastructure, databases, and third-party APIs.
- Translate complex business requirements into practical technical solutions while balancing product objectives, engineering quality, scalability, and delivery timelines.
- Provide technical leadership across concurrent projects and contribute to architectural decisions, technical planning, and product strategy.
- Collaborate directly with stakeholders to define requirements, evaluate technical approaches, and deliver reliable software solutions.
Senior Software Engineer
BJIT
- Designed and developed scalable full-stack web applications and SaaS platforms for diverse business requirements.
- Built responsive front-end applications using React, Next.js, TypeScript, JavaScript, and modern component-based development practices.
- Developed back-end services, REST APIs, database-driven functionality, and third-party integrations using Node.js and other back-end technologies.
- Designed application architecture with a focus on scalability, maintainability, performance, security, and reliable data flow.
- Developed complex business workflows including authentication, user management, dashboards, search, filtering, booking, eCommerce, and data-driven functionality.
- Integrated external services and APIs to extend application functionality and connect products with third-party systems.
- Implemented deployment, CI/CD, cloud, and server optimization practices to support reliable production releases.
- Investigated technical issues, optimized application performance, and improved application stability and maintainability.
- Collaborated with product owners, designers, developers, and stakeholders to translate business requirements into production-ready software.
- Contributed to technical planning, code reviews, development standards, and continuous improvement across projects.
Software Engineer
Softvence Agency
- Developed and maintained full-stack web applications for business and customer-facing use cases.
- Built responsive interfaces using React, JavaScript, TypeScript, HTML, and CSS.
- Developed REST APIs, back-end services, and database-driven functionality.
- Integrated third-party APIs and external services into production applications.
- Implemented authentication, user management, search, filtering, dashboards, and business workflows.
- Collaborated with designers, developers, and stakeholders to translate requirements into production-ready software.
- Debugged application issues and improved performance, reliability, and maintainability.
- Participated in testing, code reviews, deployment, and ongoing application improvements.
Junior Software Engineer
TigerIT
- Developed web application features based on functional and business requirements.
- Built reusable front-end components and responsive user interfaces.
- Implemented back-end functionality, APIs, and database integrations.
- Integrated external services and APIs into web applications.
- Troubleshot software issues and contributed to application performance improvements.
- Worked with senior engineers to implement scalable and maintainable solutions.
- Participated in testing, debugging, code reviews, deployment, and maintenance.
- Collaborated with cross-functional teams to deliver features within project requirements and timelines.
Experience
iNeedHypno – Online Coaching & Client Management Platform
https://ineedhypno.comFliday – Global Travel eSIM Marketplace
https://fliday.com/PULSE - Healthcare Practitioner Discovery & Community Platform
https://seanb901.vercel.app/Marinali Rooms - Luxury Hotel & Booking Experience
https://marinalirooms.vercel.app/enHandball United - Sports Community & Commerce Platform
https://maridelgad.vercel.app/VisualForge Studio - Image Processing Application
https://visualforge-studio.vercel.app/Education
High School Diploma in Computer Science
Dhaka Polytechnic Institute - Tejgaon, Dhaka
Certifications
AWS Certified Developer – Associate
Amazon Web Services
Microsoft Certified: Azure Developer Associate
Microsoft
Meta Back-End Developer Professional Certificate
Meta
JavaScript Certification
freecodecamp
Responsive Web Design
freeCodeCamp
Meta Front-End Developer Professional Certificate
Meta
Skills
Libraries/APIs
Node.js, API Development, React Query, Shopify API, React, REST APIs, Custom APIs
Tools
Shopify Plus, Git, Excel 2016, Wix, NodeBox, Nextion
Languages
Python, JavaScript, TypeScript, JavaScript 6, SQL, Java, Go, PHP, HTML, CSS
Frameworks
Next.js, NestJS, JavaScriptCore, React Native, Software Communications Architecture (SCA), Next.js 14, Django, AWS HA
Platforms
Amazon Web Services (AWS), WordPress, Shopify, WooCommerce, Android, iOS, Blockchain, Web, Azure
Storage
PostgreSQL, Relational Databases, Cloud Deployment, Databases
Industry Expertise
Web Design
Paradigms
Responsive Web Design (RWD), Responsive Development, App Development
Other
Web Development, Web Applications, Software Design, Software Development, CI/CD Pipelines, Web Dashboards, Data Analysis, Cloud Infrastructure, Large Language Models (LLMs), Squarespace, eCommerce, eCommerce CMS, Shopify Customizations, APIs, Architecture, Artificial Intelligence (AI), Code Review, Supabase, Payment APIs, WordPress Themes, Figma to WordPress, Elementor, WordPress Plugins, Software Architecture, Chrome Extensions, Websites, Content Management Systems (CMS), PayPal, Excel Add-ins, Internet of Things (IoT), Payment Gateways, Authentication, Performance Optimization, UI Development, Full-stack, Full-stack Development, Search, Web3, Development, Back-end Development, Front-end Development, Cloud Development, Cloud Services, Cloud AI Services
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