Sajib Khan

Sajib Khan

Lead Software Engineer

[email protected]+8801798500100

Professional Summary

  • 10+ years driving frontend development, developing scalable web applications.
  • Expert in JavaScript (10Y), React/Redux (7Y), TypeScript/Next.js (5Y), Modern CSS & Git.
  • Proven track record in resolving complex issues through debugging and optimization.
  • Consistent experience working with USA, UK, and European companies since 2019.

    • WORK EXPERIENCE

    Lead Software Engineer
    Goava Sales Intelligence AB 🇸🇪
    07/21 - Pres.
    • Led a full UI/UX revamp that boosted application performance by 30% via React optimization, lazy loading and render blocking minimization.
    • Architected a scalable system using React, Redux, Next.js & TypeScript.
    • Delivered pixel-perfect, responsive interfaces from Figma designs using modern CSS methodologies.
    • Mentored a 4-member frontend team, improving sprint velocity by 40%.
    • Collaborated with cross-functional teams to launch seven high-impact product features.
    Senior Software Engineer
    Goava Sales Intelligence AB 🇸🇪
    07/19 - 06/21
    • Designed and developed 100+ reusable React components across SaaS app.
    • Developed and enhanced modern web applications using React, Context API, GraphQL, ES6+ & Styled-components, ensuring clean and maintainable code.
    • Developed interactive data visualizations with D3.js while maintaining smooth user experience.
    • Migrated APIs from REST to GraphQL using Axios, AWS AppSync & Normalizr, improving API efficiency, flexibility, and reducing load time by 20%.
    • Manage the frontend team in an Agile environment, fostering collaboration and maintaining productivity.
    Senior Software Engineer
    AppsCode Inc. 🇺🇸
    11/14 - 06/19
    • Developed Kubernetes Dashboard leveraging Vue.js 2, Vuex with 95% reusable components. Automated testing using Jenkins CI.
    • Crafted a responsive website for appscode.com utilizing Hugo. Developed a chrome extension.

    SKILLS

    • •  JavaScript
    • •  React
    • •  Next.js
    • •  TypeScript
    • •  Redux
    • •  CSS
    • •  HTML5
    • •  Git

    StackOverflow

    24k   

    •  9 
    •  68 
    •  79 

    (Tags)

    (Score)

    1403

    171

    210

    CERTIFICATES

    Front End Libraries
    Git in Depth
    JavaScript Algorithms and DataStructures Cert
    EXPERT in JavaScript - @Pluralsight
    Modern React with Redux
    (check over 50 cert?)

    PROJECT

    MyDailyLearn
    JavaScript, React, Git, CSS
    • Collection of interview questions for frontend development, categorized by topic and technology.
    CSS Advanced Animations
    HTML, CSS
    • Collection of interactive buttons, a distinct CSS animation or, transition effect triggered on hover
    Different Charts Using D3.js
    D3.js, JS, CSS
    • A collection of dynamic charts including tree maps, choropleths, heat maps, scatterplots, and bar charts to visualize complex data interactively.

    EDUCATION

    BSc in Computer Science and Engineering
    Chittagong University of Engineering & Technology

    ADDITIONAL SKILLS

    • Extensive experience with ES6+, React (hooks/context), Redux (+redux-saga), D3.js, GraphQL, Vue.js, and Node.js.
    • Master-level expertise in JavaScript/React architecture, delivering clean, efficient & scalable code using latest industry practices.
    • Skilled in implementing pixel-perfect, responsive designs from Figma using CSS (TailwindCSS, styled-components, SCSS, etc.).
    • Strong testing expertise using Cypress for E2E, Jest for unit testing, and Puppeteer/JenkinsCI for automations.
    • Hands-on experience with Blockchain, Web3, NFTs, and Decentralized Finance (DeFi) technologies.
    • Strong problem-solving and debugging skills, sharpened through competitive programming (ICPC/NCPC participation).
    • Proven technical leadership - successfully led frontend teams and mentored 50+ developers in my career.

    v7.1.0