Mizanur Lahin Email & Phone Number

Sylhet, Bd

Sylhet, Bangladesh

● Led the requirement analysis, assigned modules to team members, communicated effectively with clients, and utilized project management tools to ensure successful system delivery.● Designed Database Schema (best practice) based on business requirements and improved schema using different normalization techniques. Increased performance for high traffic with Buffer Pool size, Connection Pooling, Compound and Cluster Index.● Resolved cloud infrastructure issues, including bad requests and connection timeouts, while bolstering security layers of reverse proxies(nginx) and firewalls.● Improved code quality by applying software design principles as well as clean code.● Improved the First Contentful Paint with Image Preloading, adopted WebP Images & Font.● Led a team in the design and implementation of pixel-perfect UI to gain user/customer satisfaction.● Strengthened security measures against OWASP security rules, SQL injection, and Cross-Site Scripting attacks.● Implemented best practices in HTML/CSS and optimized client-side performance, addressing issues such as large bundle size and memory leaks.

Sylhet, Bangladesh

A Startup. I led and worked on a large scale multi vendor ecommerce platform and some client work.● Server-side: Clean Code, efficient Asynchronous operation, Rest API best practices, Compressed the API (client got the response less size), secured API through Token based authentication technique, Unit Testing and Re usability, Service Based Architecture.● Cloud: Designed the Cloud Security Group, IAM policies forsecurity perspective.● CI/CD: Wrote Continuous Integration with GitHub Action.● Database: Efficient Schema Design, Indexing and Encryption Decryption sensitive information.● Client-side: Semantic HTML, proper reusability with SCSS, reduced bundled size with React Suspense (got huge perf improvements on initial loading), fixed memory leaks issue (perf improvements on slow network), used SWR (for caching the responses for products to make user experience good), lazy load the products list (got significant fast loading), handled 50+ use case testing (Unit, Integration), fixed bottlenecks using React Devtools Profiler section.● Security: Designed Rate Limiter for brute force attack, applied proper token based authentication system using both Access Token and Refresh Token, handled XSS attack on both server and client side, and JavaScript Vulnerabilities.● Provided Mentorship to 10+ fresh graduate junior developers.

Worked and Maintained a large scale web application. - Using tools: Nods.js/Express.js, MongoDB/Mongoose, Vue.js/Nuxt.js, Docker, Nginx. - Clean Code Architecture, Server side Scalability, Rest API Best practices. - Database Schema Design, Optimising Database for maximum speed, Scalability. - Optimised Database Query for 10k+ data (with both Single Key Index and Compound Index) and fetched data within 1-2 milliseconds. - Security improvement. - Unit Testing on Server Side.WPManageninja - Worked on the wordpress plugins like Payment and Donation, Mortgage Calculator, Amazon Affiliates plugin. - Created some integrations for Form and Payment plugins that helped their business immensely and gained customer satisfaction. - Bug Fix, Added new features to existing Wordpress Plugins(active users of it are around 300,000+). - Developed a couple of GutenBerg WordPress Plugins with React or JSX. - Created Gutenberg wordpress plugins, some notable blocks are Comparing Two Images, PostGrid Block, Raw Layout.- Conducted several online learning sessions.

Sylhet, Bangladesh

Worked as an intern. Made Wordpress Plugin(front-end) with JavaScript & Vue.js.

Bachelor Of Computer Science And Engineering

Intermidiate, Science

Secondary School Certificate, Science