About

Available · Remote / relocation · Dhaka · US/EU overlap

Marcel David Baroi

Software Engineer

I design and ship full-stack web and cross-platform applications across Next.js, Vue / Quasar, NestJS, Flutter, and PostgreSQL.

Architecture-first: relational data models, strict API contracts, and multi-tenant row-level security before AI-assisted synthesis.

Private SemVer package registries and atomic PostgreSQL migrations — reducing duplication while keeping production velocity measurable.

10+ Platforms Shipped · 100% RLS Data Isolation · 3.91 B.Sc. in CSE CGPA · +60% Code Reusability

01

Problem & Market Discovery

PROBLEM IDENTIFICATION

Identifying Core Market Problems Before Code

Before starting any project, I identify the real market friction and the exact business problem that needs solving. I map out user pain points and define clear success criteria upfront.

02

Research Existing Solutions

COMPETITIVE ANALYSIS

Analyzing Competitors & Identifying Gaps

I audit current market solutions to understand their strengths and pinpoint their weaknesses. This gap analysis uncovers what is missing so we can design a differentiated, superior product.

03

Design the Solution & Data Model

SYSTEMS & DATA ARCHITECTURE

Structuring Relationships & Entity Schemas

Before writing application logic, I architect the full solution: designing the database schemas, entity relationships, integrity constraints, and API contracts that back the system.

04

UI/UX Design & Implementation

DESIGN & IMPLEMENTATION

Crafting Interfaces & Shipping Fast Software

I design intuitive user journeys and responsive interfaces in UI/UX, then translate them into performant, production-ready frontend and backend code tested against real-world user flows.

Architecture-First AI Synthesis
Domain-Driven Design (DDD) & MVC
Relational Data Modeling & 3NF
Multi-Tenant SaaS Security & RLS
Modular Monorepo Architecture
npm Package Build & Packaging
Systematic Code Validation & Testing
Rapid MVP Scaffolding & Prototyping
PostgreSQL & Database Optimization
PostgreSQL RPC & PL/pgSQL
Database Migrations & Schema Versioning
MySQL
SQLite
Supabase (Realtime & Row-Level Security)
NestJS & Node.js Microservices
Express & RESTful API Gateways
JWT & OAuth 2.0 Auth
Swagger & OpenAPI
Prisma ORM & TypeORM
Firebase & Cloud Messaging
PHP & Blade Templating
MongoDB Document Stores
TypeScript & JavaScript (ES6+)
Vue 3 (Composition API & Script Setup)
Quasar Framework (SPA / PWA Suites)
React
Next.js (App Router & SSR)
React Native & Expo
Zustand State Management
TanStack Query & Table
Vite Build Tooling
shadcn/ui & Radix UI
Tailwind CSS & Modern Design Systems
Phosphor Icons & FontAwesome
Flutter & Dart (Cross-Platform Mobile)
Capacitor (Android Builds & Hardware)
Pinia Reactive State Management
Astro
SvelteKit & Svelte
Knockout.js
Bootstrap
Vue.js 2 & Vuex (Legacy Maintenance)
pnpm & Package Management
Private Git Registries & SemVer
GitHub & GitHub Actions
Docker & Docker Compose
Cloudflare Pages & Workers
Cloudinary CDN Storage
Vercel Deployment
ESLint & Prettier Code Hygiene
Android Studio & Gradle
Ubuntu Linux & Linux Mint
Git Submodules & Multi-Repo
Figma
Python
Python Web Scraping & Automation
Pandas
NumPy
  1. November 2024 — Present

    Proficient Information Systems

    Architected and delivered the Enterprise Modular Packaging Infrastructure with Quasar and Vite library mode, creating autonomous SemVer npm packages served over private Git registries to increase code reusability by 60%

  2. Q3 2025 — Present

    Software Services & Client Solutions

    Independently designing and building a multi-tenant wholesale ERP platform (TradeflowBD) as my own software to automate inventory, landed costing, and invoicing for wholesale clients

  3. 2025 — Present

    BrandWala (Import-Export Trading)

    Employed to manage operational file records, commercial data, and accounts calculations with Excel for a small import-export trading company

  4. 2020 — Q1 2025

    Independent Academic Mentorship

    Delivered rigorous one-on-one and small-batch academic mentorship for SSC and HSC candidates from Dhaka's most reputed schools and colleges (including Notre Dame College cohorts)

School & University

Civic years → Archive

Google Cloud

Responsible AI: Applying AI Principles with Google Cloud

Aug 2025 ↗

Google Cloud

Prompt Design in Vertex AI

Aug 2025 ↗

Cisco Networking Academy

Python Essentials 2

May 2025 ↗

Cisco Networking Academy

JavaScript Essentials 2

Oct 2024 ↗

freeCodeCamp

Responsive Web Design

Mar 2025 ↗

Microsoft & LinkedIn

Career Essentials in Generative AI by Microsoft and LinkedIn

Mar 2024 ↗

Profiles

Problem Solving & Accounts ↗

Beyond

Classical Percussion (Tabla)

2015 — 2017 • 3 YRS TRAINING

3 years of classical Tabla training (2015–2017). Practicing classical Indian rhythm cycles (Taal), mathematical subdivisions, and tempo cadence cultivated deep focus and systematic discipline.

Academic STEM Mentorship & Tutoring

2020 — 2025 Q1 • 24 STUDENTS

5 years of specialized academic mentorship for SSC and HSC candidates from premier institutions across Dhaka. Tutored ~24 talented students in higher mathematics and physics, guiding them to peak GPA-5.00 board exam distinctions.

Drawing & Fine Arts (Competition Winner)

2014 — 2015 • MULTI-AWARD WINNER

Formal fine arts training (2014–2015) with multiple drawing competition awards. Freehand illustration and spatial proportion geometry directly inform frontend component hierarchy.

Role-Play Acting & Community Theatre

COMMUNITY & CHURCH DRAMA

Active actor in numerous role-play acting performances and church drama programs, developing empathetic perspective-taking, vocal presence, and collaborative stage confidence.

Cinema & Screenplay Architecture

CINEPHILE & NARRATIVE DESIGN

Avid cinephile analyzing world cinema, cinematography, and narrative pacing—drawing parallels between screenwriting structural coherence and enterprise domain invariant stability. IMDb ↗

Available for full-time · remote or relocation

Let’s talk.