ENGINEERING LEAD & PRODUCT ARCHITECT · CHITTAGONG (UTC+6)

I build dependable software and unusual web experiences.

Ten years building software that holds up under load: multi-tenant platforms that run real business workflows, real-time 3D that hits frame budget, and interfaces designed with genuine craft. Where I apply AI, it’s built into the operational core, never added as decoration.

10+ YEARSBuilding Production Software
PRODUCTION SYSTEMSSaaS · Platforms · Extensions · 3D
GLOBAL DELIVERYChittagong · Remote worldwide

Selected Work

A closer look at what I built, what made it difficult, and what changed.

purebattles.com
PureBattles 3D historical battle simulator interface showing historical formations and terrain
INTERACTIVE HISTORY PLATFORMLive

PureBattles

Role — Product architecture, full-stack development, and 3D systems

An interactive platform for exploring historical battles through real-time 3D environments, troop movement, tactical formations, key events, and contextual research.

Outcome — Shipped an interactive history platform combining historical content with real-time 3D exploration and rendering optimization.
Tech: Three.js · React Three Fiber · Laravel · WebGL
Muslim Tab preview
BROWSER EXTENSIONLive

Muslim Tab

Role — Product development

A Quran-focused Chrome new-tab experience bringing Quran reading, translations, recitations, prayer information, Hijri dates, and Islamic resources into the browser.

Distribution Management System preview
ENTERPRISE SAASIn Development

Distribution Management System

Role — Application architecture

A multi-tenant distribution platform for products, purchasing, sales, inventory, financial accounts, users, permissions, and company-level workflows.

Arifen's Pixel Workspace preview
CREATIVE TECHNOLOGYIn Development

Arifen's Pixel Workspace

Role — Concept

An interactive pixel-art portfolio built as a responsive virtual workspace with environmental states, lighting, sound, weather, hotspots, a CRT terminal, and an editorial journal.

View case study

How I Can Help

Focused engineering support for products with complex workflows, demanding interfaces, or unusual technical requirements.

01

Production SaaS & Scalable Architecture

Multi-tenant platforms, high-volume database schemas, and background job pipelines that eliminate operational friction.

02

Real-Time 3D & Spatial Web

High-framerate WebGL/Three.js environments, interactive battle simulations, and GPU draw-call optimization.

03

High-Throughput Frontend

Design systems, sub-millisecond state orchestration, and accessible, responsive web applications built for speed.

04

Applied AI & Tool Integration

Practical LLM orchestration, structured tool calling, and RAG pipelines designed for real workflow leverage.

Tools Behind the Work

A focused collection of technologies, runtimes, and engineering primitives I rely on in production.

Frontend

React·Next.js·Inertia·TypeScript·Tailwind

Backend & Systems

Laravel·Node.js·REST APIs·PostgreSQL·MySQL·Docker

Creative Technology

Three.js·React Three Fiber·WebGL·Canvas 2D·Web Audio API

Platform & Cloud

Vite·Git·Cloudflare R2·Linux·CI/CD

Background & Approach

A decade bridging backend architecture with visual systems.

Fahim Arifen - Senior Full-Stack Engineer
Outside the screen: mountain roads, quiet places, and space to think.

A decade of shipping software.

Senior full-stack software engineer and product builder with 10+ years of experience designing and shipping SaaS platforms, business applications, browser extensions, and real-time interactive systems. My engineering practice bridges the gap between deep systems architecture relational data modeling, tenant isolation, and high-throughput APIs and bespoke browser execution.

My approach is rooted in understanding operational workflows before writing code: establishing technical boundaries, selecting dependable primitives, building for production resilience, and refining through profiling and measurement rather than premature abstraction.

Field Notes

Essays from the intersection of software architecture, creative technology, and practical engineering.

01
ARCHITECTUREOctober 20265 min read

Why I Build Cozy Digital Spaces

The web was once full of personal spaces that felt cared for small corners of the internet built with intention rather than engagement metrics. Building a virtual room taught me how software can evoke place and atmosphere while remaining fully functional.

02
GRAPHICS & CANVASSeptember 20267 min read

Building a Responsive 480×270 Virtual Workspace

Pixel art demands integer scaling and sharp edges, but modern screens come in hundreds of viewport ratios. Here is how I authored a responsive virtual canvas with layered lighting, weather state machines, and procedural audio.

03
APPLIED AIAugust 20264 min read

Building AI Features That Earn Their Place

Most AI demos break down when subjected to edge cases or messy user data. Building reliable LLM features requires strict schema enforcement, sensible fallbacks, and treating model output as untrusted input.

Tell me what you’re building.

I work on SaaS products, complex interfaces, and unusual interactive experiences.

Email Fahim
Available for select Q4 product engagements · Remote from Chittagong (UTC+6)