Career

Professional Experience

A journey through my professional career, showcasing key roles, achievements, and the impact I've made at various organizations.

6.4+

Years Experience

Companies

Positions

Achievements

Currently: Full Stack Developer

Full Stack Developer

Clerk Data LLC (Via Toptal)

Current

Aug 2025 – Present9m

Key Achievements

Migrated a legacy ASP1/MS SQL application to a modern NestJS/React stack, eliminating technical debt from a Windows 95-based system and establishing a scalable, cloud-native architecture on AWS.
Reduced page load times by 98%, optimizing queries on 50+ million record tables to execute in under 500ms compared to previous 60+ second wait times through database restructuring and strategic caching.
Architected and deployed a distributed AWS infrastructure utilizing Elastic Beanstalk with load balancing, RDS PostgreSQL, ElastiCache Valkey, and CloudFront CDN to ensure high availability and performance.
Implemented Redis-based caching and session management, achieving sub-second response times for data-intensive operations while supporting concurrent user sessions at scale.
Established enterprise-grade security by integrating AWS Cognito authentication with role-based access control, protecting sensitive data, and ensuring compliance with modern security standards.
Optimized database performance for large-scale operations, engineering efficient query strategies that reduced full-database searches from indefinite loading to ~1 second execution time.
Delivered a production-ready application with modern UI/UX using React and shadcn/ui, transforming user experience from an outdated interface to a responsive, intuitive platform with enhanced accessibility.

Full-stack Web Developer

Upwork

Apr 2020 – Jul 20255y 3m

Key Achievements

Developed more than ten web apps using JavaScript/Typescript frameworks like React, Express.js, Next.js, and NestJS.
Helped clients to decide the best technology for their project.
Delivered projects within deadline with excellent quality and received a lot of good client feedback.
Implemented mobile responsive design for the front end of the projects.
Deployed project on different services like Vercel, AWS and Netlify.

Senior Full-stack Developer

CarExpert (Via Toptal)

Dec 2022 – Apr 20252y 4m

Key Achievements

Developed features to help the client increase the number of car selling leads from 2,000 to 5,000 per month from their website.
Built a portal for car dealers to manage car leads. Hundreds of dealers use the portal.
Created features in Next.js for the website visited by millions of users per month.
Created a responsive user interface using Next.js and Material UI for the dealer portal and Vanilla extract CSS for the main website.
Integrated the legacy system API with the new user interface.
Added unit tests using Jest and end-to-end testing using Cypress. Also tested various functions and features.
Introduced payload CMS to replace the old CMS that was in used.
Implemented Stripe subscriptions and widely tested all stripe functionality. Also used stripe webhook.

Full-stack Engineer | Health Benefits Product

StretchDollar Inc (Via Toptal)

Jun 2024 – Jan 20257m

Key Achievements

Improved scalability to meet client's requirements.
Made the application more secure as it contains bank account and transaction information.
Improved the design of the application and introduced responsive design for mobile view.
Worked in startup environment and met client's deadline.

Full-stack JavaScript Developer

A Toptal Client

Jul 2022 – Jan 20241y 6m

Key Achievements

Developed an eCommerce website using Express.js and React (Next JS).
Used different AWS services like AWS Elastic Beanstalk, Amazon RDS, Amazon S3, Amazon CloudFront, etc for the deployment of the project.
Integrated different books APIs including Amazon Product Advertising API to fetch book's data.
Migrated React website into Next JS website.
Added admin dashboard to manage blogs and user's activity.
I utilized various strategies for SEO to ensure maximum organic reach.

Full-stack Engineer

A Toptal Client

Jan 2023 – Apr 20233m

Key Achievements

Developed multiple apps using Next.js with serverless functions.
Used MUI for the front end and made the website responsive for mobile view.
Utilized different AWS services to implement the required functionality.
Added multiple color themes for the project, which can be switched easily.
Ingegrated Sendgrid and Twilio for Two Factor Authentication (2FA).

Adjunct Lecturer

Ahsanullah University of Science and Technology

Mar 2022 – Mar 20231y

Key Achievements

Designed and delivered a comprehensive software development curriculum covering HTML, CSS, PHP, Bootstrap, JavaScript, Ajax, and MySQL for university-level students, establishing foundational and advanced programming competencies.
Conducted systematic code reviews and evaluations for student projects, providing detailed feedback on code quality, best practices, and design patterns to improve their software development skills.
Instructed students in industry-standard best practices for web development, including responsive design principles, database integration, and asynchronous programming techniques using modern frameworks and technologies.
Assessed and graded student assignments, projects, and examinations, maintaining rigorous academic standards while providing constructive feedback to enhance learning outcomes.
Mentored students through hands-on coding exercises and real-world project implementations, guiding them from concept to deployment using full-stack web development technologies.
Developed course materials, including lecture presentations, coding assignments, and project specifications that aligned with current industry standards and software development methodologies.
Evaluated software architecture and design decisions in student projects, teaching principles of scalable, maintainable, and efficient code structure across front-end and back-end components.
Facilitated practical learning experiences in database design and management using MySQL, teaching students to implement secure and optimized data storage solutions.

Full-stack Web Developer

ElecTrain, LLC (Via Toptal)

Apr 2022 – May 20221m

Key Achievements

Developed the entire back and front end. Now the app is in production, and it helped the client a lot to manage their inspection.
Designed the database tables and made queries optimized.
Handled a large number of images uploaded to S3 storage of DigitalOcean.
Added functionality to generate PDF reports from custom data.

Software Engineer

Greentech Apps Foundation

Apr 2021 – Apr 20221y

Key Achievements

Developed an app to manage different organizations' transactions, bills, and invoices.
Introduced TypeScript and Tailwind CSS to the project.
Mentored junior developers and tech different technologies.
Implemented features using different AWS services like AWS S3 and AWS Textract.
Introduced unit tests using Mocha and Chai to the project.
Designed front-end, back-end and database architecture for the project.

Software Engineer

Enosis Solutions

Jan 2020 – Apr 20211y 3m

Key Achievements

Worked on exam management app enabling scheduling, fee payments, proctor selection, and automated assessment evaluation.
Wrote comprehensive tests for Node.js backend and optimized performance, significantly reducing test execution time.
Used Bitbucket and Jira for version control and project tracking to streamline development workflow.
Created project from scratch and designed scalable database architecture for high-volume operations.
Mentored junior developer through project onboarding and technical implementation guidance.
Processed large CSV datasets on backend using optimized algorithms for efficient data handling.
Developed APIs for third-party integration, enabling external companies to connect with the platform.
Integrated Twilio for SMS and Voice Call.

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