Available for selected opportunities

Full-Stack Portfolio of

Sefat Ullah
Fahad

Full Stack Developer

Software & Financial Accounting

Hi, I'm Sefatullah Fahad, a passionate Full-Stack Web Developer. I love building fast, scalable, and user-friendly web applications from scratch.

As a tech-agnostic developer, I adapt quickly and use the best tools, frameworks, and technologies required to turn ideas into clean, efficient code.

100%

Clean Code & RLS

MERN+Next

Modern Full Stack

Experivia

Active Full-Time

Sefat Ullah Fahad - Full Stack Developer

02 // Philosophy & Background

About Me

Bridging analytical precision with modern web architecture.

I am a Full-Stack Web Developer currently managing responsibilities at Experivia. Balancing the logic of clean code with the precision of financial data has allowed me to develop a unique problem-solving mindset.

My engineering philosophy revolves around clarity, reliability, and business impact. Whether architecting high-throughput REST APIs, optimizing complex MongoDB queries, or choreographing 60FPS GSAP animations, I treat every project with meticulous attention to detail.

Managing financial ledgers while simultaneously developing full-stack software cultivates strong discipline, strict time management, and a deep appreciation for data integrity. I do not just write code — I build sustainable digital engines that empower businesses to scale securely.

#FullStackEngineer#AccountingPrecision#ContinuousLearner#ScalableArchitecture

Core StrengthsPillars

Full-Stack Engineering

Core Competency

Architecting complete web ecosystems from intuitive React/Next.js interfaces to robust Node.js/Express backends and high-performance databases.

Financial & Logic Precision

Accounting Mindset

Bridging financial data accuracy and business workflows with software engineering, ensuring zero-error calculations and audit-ready data models.

Scalability & Security

Enterprise Standards

Implementing strict Supabase Row-Level Security, JWT authentication cycles, modular schemas, and database query optimization.

Continuous Velocity

Growth Trajectory

Relentlessly adopting modern advancements — from GSAP micro-interactions to autonomous AI integration and serverless cloud architectures.

03 // Technical Arsenal

Skills & Capabilities

Loading 3D Universe...

04 // Professional History

Work Experience

Dual Role: Software Development & Accounting

Full-Stack Developer & Accountant

Current Role

Experivia•Full-time / Permanent

April 2026 – Present

Key Impact & Responsibilities

Architecting and maintaining full-stack web applications and client CMS environments with Next.js and MERN stack.
Building custom WordPress widgets, themes, and dynamic plugins tailored for high-conversion marketing funnels.
Developing secure backend REST APIs, JWT authentication protocols, and Supabase / MongoDB query pipelines.
Leading database schema optimization and automated data migration pipelines for growing product catalogs.
Managing corporate bookkeeping, financial reporting, cash flow analysis, and data auditing with strict accuracy.

Technologies Used:Next.jsReactNode.jsMongoDBSupabaseWordPressFinancial AnalysisAPI Optimization

Full-Stack Developer & Accountant — Intern

Experivia•4-Month Intensive Internship

December 2025 – March 2026

Key Impact & Responsibilities

Contributed actively to core frontend development sprints, converting design specifications into responsive React components.
Assisted in backend endpoint testing, bug remediation, and third-party API integrations.
Handled day-to-day transaction records, financial ledger updates, and weekly financial summarization.
Demonstrated high engineering velocity and dual-discipline reliability, resulting in rapid promotion to permanent full-time role.

Technologies Used:JavaScript ES6+React.jsExpress.jsTailwind CSSBookkeepingPostman

05 // Academic Foundation

Educational Background

Analytical & Quantitative Studies

In Progress

Alim — 2nd Year (Higher Secondary Equivalent)

Khulna Nesaria Kamil Madrasah•Khulna, Bangladesh

2024 – Present

Key Achievements & Focus Areas

Advanced curriculum in Islamic Studies, Arabic literature, Logic, and General Science & Mathematics.

Mastered disciplined time management by successfully balancing rigorous academic curriculum with full-time software engineering.

Cultivated ethical leadership, analytical problem breakdown, and focused personal dedication.

Completed

Dakhil — Secondary School Certificate

East Chitki D H D Madrasa•Jhalakathi, Kathalia, Bangladesh

Graduated 2024

Key Achievements & Focus Areas

Graduated with outstanding academic distinction across core sciences and foundational studies.

Active participant in regional logic debates, mathematical problem solving, and community initiatives.

Established early passion for programming, computer science principles, and web technologies.

06 // Featured Work

Selected Projects

Full-Stack Implementations

Live Project

Project Showcase

Zero Olympiad

Zero Olympiad empowers students to become Global Citizens by mastering the UN's 17 SDGs. From Zero Poverty to Zero Hunger, we prepare future leaders to navigate World Affairs, Global Policies, and Diplomacy by 2030.

Next.jsTailwindNextAuth.jsRedux ToolkitGSAPFramer MotionNode.jsExpress.jsJWTSupabase

Live View Source Code

GLTS : Global Leadership Training & Skills

Live Project

Project Showcase

GLTS : Global Leadership Training & Skills

Transform your potential into global excellence with GLTS by Faatiha Aayat. An exclusive professional development program for strategic leadership, public speaking, and global representation.

Next.jsTailwindSupabase AuthRedux ToolkitGSAPFramer MotionNode.jsExpress.jsJWTSupabase

Live View Source Code

Live Project

Project Showcase

Axialoop

Empowering Businesses Through Advanced AI Transformation. Your Strategic AI Partner for Seamless Solutions at 360 Degrees.

Next.jsTailwindRedux ToolkitGSAPFramer Motion

Live View Source Code

Live Project

Project Showcase

William White

With decades of combined legal experience, our firm is dedicated to delivering high-caliber, strategic solutions for our clients. We combine seasoned courtroom expertise with personalized client care to ensure your rights and assets are fully protected.

Next.jsReact-DOMTailwind CSSFramer MotionMotionSwiperLucide ReactReact iconESLinteslint-config-next

Live View Source Code

07 // Services & Capabilities

Services & Offerings

High-Velocity Engineering & Architecture

End-to-End Solutions

Full-Stack Web Development

Building secure, scalable, and high-performance full-stack web applications from scratch using the MERN stack and Next.js.

Complete MERN / Next.js Web Apps

Scalable Node.js & Express REST APIs

Database Schema Design (Supabase/Mongo)

Secure Authentication & Role-Based Access

Next.jsNode.jsExpressSupabaseMongoDB

Figma to React/Next.js

Pixel-Perfect Frontend

Converting Figma, Adobe XD, or reference designs into highly accurate, fully responsive and clean-coded frontend interfaces.

100% Accurate Figma-to-Code Translation

Fully Responsive (Mobile, Tablet, Desktop)

Clean Semantic HTML5 & Modern CSS/Tailwind

Accessible & Cross-Browser Tested

FigmaReactTailwind CSSTypeScriptA11y

Interactive UI/UX

Creative Web Animations

Crafting dynamic scroll-based animations and smooth transitions using GSAP, ScrollTrigger, and Framer Motion.

ScrollTrigger Choreography & Parallax

Micro-Interactions & Magnetic Hover Effects

Smooth Page Transitions & Staggered Enters

High-Performance 60FPS GPU Animations

GSAPScrollTriggerFramer MotionCanvasUI/UX

Speed & Visibility

Performance & SEO Optimization

Optimizing loading speeds and Core Web Vitals using modern Next.js rendering strategies to create fast and SEO-friendly websites.

95+ Google PageSpeed & Core Web Vitals

Next.js SSR/SSG & Edge Caching

Dynamic OpenGraph & Structured JSON-LD

Asset Compression & Code Splitting

Core Web VitalsSSR/SSGSEOEdge Caching

CMS & Custom Sites

WordPress Development

Developing custom WordPress websites, landing pages and blogs that are responsive, editable and easy for clients to manage.

Custom Elementor / Gutenberg Widgets

Tailored Themes & Fast Loading Speed

E-Commerce (WooCommerce) Integration

Zero-Hassle Client Dashboard Training

WordPressElementorPHPCustom WidgetsCMS

Dashboards & E-Commerce

Custom Web Applications

Developing tailored web solutions including authentication, complex state management, custom dashboards and e-commerce platforms.

Interactive Analytics & Admin Dashboards

Custom E-Commerce & Checkout Workflows

Real-Time Notifications & WebSockets

Redux Toolkit Predictable State Flow

Redux ToolkitAuth.jsStripe/PaymentDashboards

Team Leadership

Technical Project Management

Leading web development teams, managing agile workflows, and ensuring seamless project execution from planning to deployment.

Agile Team Coordination & Standups

Code Reviews & Architecture Planning

Project Rescue & Seamless Handover

CI/CD Pipeline & Deployment Management

Project ManagementAgileLeadershipDevOps

09 // Continuous Evolution & Process

Approach, Focus & Languages

2026 Innovation Roadmap & Engineering Lifecycle

Development Lifecycle & Approach

Deep Dive & Discovery

Understand

Understand the business, users and requirements thoroughly. Unpack project goals, target audience personas, and technical constraints to establish a bulletproof roadmap.

Deliverables:

Requirement Mapping

Technical Scope Document

Architecture Blueprints

Architecture & Tech Stack

Plan

Choose the right architecture and technologies. Plan database schemas, API contracts, state management boundaries, and performance benchmarks before writing a single line of code.

Deliverables:

Database Schema Diagrams

API Specification

Design System Setup

Clean & Scalable Code

Build

Create clean, scalable and maintainable systems. Develop modular components, type-safe APIs, and responsive layouts following enterprise best practices and atomic design principles.

Deliverables:

Modular React/Next Components

Secure REST Endpoints

Interactive Animations

Speed, Security & Quality

Optimize

Improve performance, security and user experience. Audit Core Web Vitals, implement caching strategies, test cross-browser responsiveness, and stress-test endpoints.

Deliverables:

Performance Audits (95+ Vitals)

Security & Auth Verification

Cross-Device QA

Deployment & Continuity

Deliver

Deploy a polished production-ready solution. Configure CI/CD pipelines, live monitoring, SSL certification, and provide clear documentation for frictionless handover.

Deliverables:

Vercel/Production Deployment

Domain & DNS Setup

Handover & Ongoing Support

Active Deep Dives & Engineering Frontiers

Next-Gen Engineering

AI Integration

GenAI & LLMs

Orchestrating autonomous AI agents, semantic vector search, dynamic prompt pipelines, and embedding Gemini / OpenAI models directly into production web workflows.

Gemini APILangChainVector DBsFunction CallingRAG Architecture

Building smart, context-aware user interfaces that automate real business tasks.

Scalable Systems

System Design

Enterprise Architecture

Mastering distributed system principles, microservice boundaries, event-driven messaging, high-availability caching, and resilient API gateway design.

MicroservicesEvent BusRedis CachingLoad BalancingRate Limiting

Engineering software designed to scale gracefully from 1,000 to 1,000,000+ concurrent requests.

Language Proficiency

🇧🇩Bangla (বাংলা)

Native / Bilingual

Fluent primary language for clear communication, collaboration and conceptual articulation.

🌐English

Professional Working Proficiency

Full professional command for international team collaboration, technical writing, and code reviews.

🇮🇳Hindi (हिन्दी)

Conversational Proficiency

Strong verbal comprehension and spoken fluency for regional communication.

High Concurrency

Backend Scaling

Data & Performance

Optimizing high-throughput Node.js clustering, Supabase / PostgreSQL query planning, indexing strategies, and connection pooling under heavy load.

PostgreSQL IndexingNode Cluster APISupabase RLSConnection Pooling

Eliminating database bottlenecks and delivering sub-50ms API response times.

10 // Career Progression

Milestones & Timeline

Chronological Journey of Engineering & Analytical Growth

2024Foundation & Rigor

Education Foundation & Computer Science Immersion

Graduated Dakhil with honors and commenced Alim at Khulna Nesaria Kamil Madrasah. Established core programming fundamentals, algorithmic logic, and web standards.

JavaScript ES6+HTML5/CSS3Data StructuresIslamic Studies & Ethics

2025Growth & Rapid Velocity

Intensive Internship & Full-Stack Development

Joined Experivia as Full-Stack Developer & Accountant Intern. Mastered the MERN stack, Next.js App Router, GSAP motion systems, and corporate financial data integrity.

React.jsNext.jsNode.jsExpressMongoDBAccounting Systems

2026Professional Impact

Full-Time Professional Role at Experivia

Promoted to permanent dual-discipline role managing full-stack web platforms, custom WordPress CMS engineering, API architecture, and financial reporting.

Full-Stack LeadershipSupabase RLSCustom WordPressPerformance Optimization

PresentAdvanced Frontier

AI Engineering, System Design & High Concurrency

Deepening practical mastery in autonomous AI integration, cloud-native system design, and sub-50ms backend scaling to build world-class products.

Gemini / LLMsDistributed ArchitectureHigh-Load DatabasesScalability

FutureAspirational Horizon

Building High-Impact Global Technology Platforms

Aspirational trajectory toward architecting transformative web products, contributing to open-source developer ecosystems, and creating global solutions.

Cloud NativeGlobal SaaSDeveloper ToolsStrategic Leadership

11 // Connect & Collaborate

Get In Touch

Available for selected opportunities

Let's discuss your next project

Whether you need a high-performance web platform, API architecture, database optimization, or financial analytics integration, I am available to help.

Email Address

fahad.web.code@gmail.com

Phone / Mobile

01943850789

Location

Rajshahi Shaheed A. H. M. Kamaruzzaman Stadium, Bangladesh

Professional Channels:

LinkedIn GitHub Facebook Instagram Discord

Sefat Ullah Fahad

Full Stack Developer

About Me

Core StrengthsPillars

Full-Stack Engineering

Financial & Logic Precision

Scalability & Security

Continuous Velocity

Skills & Capabilities

Work Experience

Full-Stack Developer & Accountant

Key Impact & Responsibilities

Full-Stack Developer & Accountant — Intern

Key Impact & Responsibilities

Educational Background

Alim — 2nd Year (Higher Secondary Equivalent)

Dakhil — Secondary School Certificate

Selected Projects

Zero Olympiad

GLTS : Global Leadership Training & Skills

Axialoop

William White

Services & Offerings

Full-Stack Web Development

Pixel-Perfect Frontend

Creative Web Animations

Performance & SEO Optimization

WordPress Development

Custom Web Applications

Technical Project Management

Approach, Focus & Languages

Development Lifecycle & Approach

Understand

Plan

Build

Optimize

Deliver

Active Deep Dives & Engineering Frontiers

AI Integration

System Design

Language Proficiency

Backend Scaling

Milestones & Timeline

Education Foundation & Computer Science Immersion

Intensive Internship & Full-Stack Development

Full-Time Professional Role at Experivia

AI Engineering, System Design & High Concurrency

Building High-Impact Global Technology Platforms

Get In Touch

Let's discuss your next project

Send Direct MessageResponse < 24 hrs

About Me

Core StrengthsPillars

Full-Stack Engineering

Financial & Logic Precision

Scalability & Security

Continuous Velocity

Skills & Capabilities

Work Experience

Full-Stack Developer & Accountant

Key Impact & Responsibilities

Full-Stack Developer & Accountant — Intern

Key Impact & Responsibilities

Educational Background

Alim — 2nd Year (Higher Secondary Equivalent)

Dakhil — Secondary School Certificate

Selected Projects

Zero Olympiad

GLTS : Global Leadership Training & Skills

Axialoop

William White

Services & Offerings

Full-Stack Web Development

Pixel-Perfect Frontend

Creative Web Animations

Performance & SEO Optimization

WordPress Development

Custom Web Applications

Technical Project Management

Approach, Focus & Languages

Sefat Ullah
Fahad