PORTFOLIO / 2026//EDITION 04
DISCIPLINE: WEB DEVELOPMENT
Crafting Digital Experiences

WEB
DEVELOPER.

DESIGN × DEVELOPMENT

“I'm a web developer who transforms creative ideas into fast, responsive, and meaningful digital experiences.”

Specialized in modern React ecosystems, performance-critical interfaces, and Swiss-inspired typographic systems.

SPECIALIZATIONNext.js / TypeScript
METHODOLOGYDesign Systems / A11y
AVAILABILITYOpen for Projects
2Y 8M+SINCE JAN 27, 2024
24+PROJECTS
10+CLIENTS WORKED
TS & JSTYPESCRIPT & JAVASCRIPT
99LIGHTHOUSE AVG
SCROLL TO DISCOVER
01//SELECTED WORK

SELECTEDWORK.

A collection of projects I've designed and developed.

High-fidelity web applications, design systems, and creative digital environments engineered with modern web standards.

01 //Full Stack·2025

InterviewMate

It's a mock interview test demo website . where the candidate can open account and they can application for their suitable topic base basic / standard / Realtime Mocktest interview practice.

It's a mock interview test demo website . where the candidate can open account and they can application for their suitable topic base basic / standard / Realtime Mocktest interview practice.Three types of users here . Admin , Interviewer , and Candidate . Admin can manage all users and also manage all interview topics . Interviewer can create new interview topics and also manage their created interview topics . Candidate can apply for their suitable interview topic and also see their all applied interview topics history.

Next.jsNode.jsExpress.jsMongoDBTailwind CSSFirebaseFirebase AuthJWTDocker
02 //Full Stack·2025

Medical BootCamps

Its a medical BootCamps where people can registration and participate the BootCamps to payment given after.

It's a medical BootCamps website, where people sing-up and create account and participate the recently BootCamps and search the bootCamp their location basis also.And then show the dashboard the participate BootCamps all List , and also show the bootCamps date.One User can participate the multiple BootCamps also.BootCamps participant confirm their successfully payment system.

ReactNode.jsExpress.jsMongoDBTailwind CSSFirebaseFirebase AuthJWTDocker
PROJECT 03//Full Stack
RELEASE // 2025

PickOn Delivery System

It's Delivery parcel system where parcel delivery processing.3 types of users are insists here.Admin , users , and Rider.Users can book their parcel and also see their parcel status and also see their all parcel history.And also rider can see their all parcel and also see their all parcel history.And admin can see all users and riders and also see all parcel.

It's Delivery parcel system where parcel delivery processing.3 types of users are insists here.Admin , users , and Rider.Users can book their parcel and also see their parcel status and also see their all parcel history.And also rider can see their all parcel and also see their all parcel history.And admin can see all users and riders and also see all parcel.

Technologies
ReactNode.jsExpress.jsMongoDBTailwind CSSFirebaseFirebase AuthJWT
PickOn Delivery System
Inspect Case Study →

MORE EXPERIMENTS & COMPLETE ARCHIVE AVAILABLE

Explore All Projects Archive
02//BIOGRAPHY & PHILOSOPHY

A LITTLEABOUT ME.

The engineer behind the design.

Synthesizing rigorous software engineering with Scandinavian and Swiss visual sensibilities.

FIG 01. / PORTRAITMIRPUR, DHAKA · GMT+6
Sajjad Hossain Jim
ACTIVE / 2026
Sajjad Hossain JimWeb Developer
// INTENTIONAL DEVELOPMENT

“I enjoy combining clean code with thoughtful design to create websites that look beautiful and perform well.”

I am a web developer specializing in building modern, accessible, and user-centric web applications. My foundation is built on modern React, Next.js, and TypeScript, with a deep appreciation for the Bauhaus and Swiss design traditions.

I believe that the best digital products reject cookie-cutter templates in favor of typographic clarity, thoughtful white space, and sub-millisecond performance responsiveness.

01 / ARCHITECTURE

Component Systems

Decoupled, strictly typed, reusable React and headless UI primitives.

02 / PERFORMANCE

Speed & Accessibility

Near-perfect Core Web Vitals, semantic markup, and full keyboard navigation.

03//TECHNICAL PROFICIENCY

ENGINEERINGSKILLS.

Honest proficiency without fake percentage bars.

A curated overview of languages, frameworks, and methodologies applied across production web applications.

01 /

FRONTEND ENGINEERING

Core technologies used to build responsive, performant user interfaces.

ReactAdvanced

Hooks, Context, Server Components

Next.jsAdvanced

App Router, SSR/SSG, Turbopack

TypeScriptProficient

Strict typing, Generics, Discriminated Unions

JavaScriptAdvanced

ES2024+, Async/Await, Web APIs

Tailwind CSSAdvanced

v4 Architecture, Custom Themes

HTML5 & Semantic MarkupExpert

Accessibility & WCAG 2.1 AA

CSS3 & Modern CSSAdvanced

Flexbox, CSS Grid, clamp(), Subgrid

02 /

DEVELOPER TOOLS & ECOSYSTEM

Daily instrumentation for source control, prototyping, and testing.

Git & GitHubAdvanced

Workflows, branching, PR reviews

VS CodeExpert

Custom debugging, keybindings, linting

FigmaProficient

Design-to-code translation, tokens

Chrome DevToolsAdvanced

Performance profiling, Lighthouse

Postman / Thunder ClientProficient

REST API testing & contracts

NPM / PNPM / BunProficient

Package management & workspaces

03 /

WORKFLOW & PRACTICES

Engineering methodologies ensuring stability, speed, and elegance.

REST API IntegrationAdvanced

Fetch, SWR, error handling, caching

Responsive DesignExpert

Fluid typography, mobile-first

Performance OptimizationAdvanced

Tree-shaking, lazy-loading, CLS/LCP

UI ArchitectureAdvanced

Atomic design, headless primitives

Cross-Browser TestingProficient

Safari, Chrome, Firefox, Mobile

SEO & MetadataAdvanced

OpenGraph, schema tags, sitemaps

04 /

IOT & EMBEDDED SYSTEMS

Physical computing, sensor telemetry, and microcontroller firmware.

Arduino Uno R3Advanced

Firmware, PWM control, analog/digital I/O

ESP32Proficient

Dual-core, Wi-Fi & Bluetooth IoT protocols

NodeMCU (ESP8266)Proficient

Lightweight cloud telemetry & triggers

IR & Sonar SensorsAdvanced

Proximity, barrier trip, distance metering

Relays & ActuatorsAdvanced

Servo motors, solenoid valves, AC/DC switching

Hardware InterfacingProficient

Breadboard prototyping, circuit design

04 // CLOSING·NEXT STEPS
● AVAILABLE FOR Q1/Q2 2026 ENGAGEMENTS

HAVE AN
IDEA?
LET'S BUILD IT.

Whether you need a dedicated web developer, an overhaul of your design system, or a bespoke web application, let's create something remarkable together.

Start A Project