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

Architecture-First AI Synthesis

I do not use AI tools to blindly guess implementation code. Instead, I design relational data schemas, map dependency graphs, and define strict API contracts beforehand. AI serves as a high-speed synthesizer executing a pre-architected blueprint, eliminating hallucinated abstractions and architectural debt.

TradeflowBD ERP →

02

Zero-Trust Relational Data

Data corruption is catastrophic. I enforce data integrity at the database engine level using PostgreSQL row-level security (RLS), foreign key cascades, strict triggers, and automated schema migrations, ensuring security rules cannot be bypassed at the application layer.

RLS case study →

03

Atomic Enterprise Reusability

Code that isn’t reusable becomes technical debt. I construct internal package architectures, shared design systems, and headless core libraries published via private npm registries, enabling multi-app synchronization and reducing redundant codebases by over 60%.

Modular packaging →

04

Measurable Velocity & Longevity

Software must outlive team rotations and scale spikes. I write predictable TypeScript contracts, keep state management centralized, and structure clean repository hierarchies that new engineers can comprehend on day one.

Service desk →

Primary = ink · Prior = muted · Descriptions on /skills

Architecture, Synthesis & AI Workflows

  • Architecture-First AI Synthesis
  • Relational Data Modeling & 3NF
  • Multi-Tenant SaaS Security & RLS
  • Modular Enterprise Package Architecture
  • Systematic Code Validation & Testing
  • Rapid MVP Scaffolding & Prototyping

Backend, Database & Cloud Services

  • PostgreSQL & Database Optimization
  • Supabase (Realtime & Row-Level Security)
  • NestJS & Node.js Microservices
  • Express & RESTful API Gateways
  • PHP (Core & MVC Architecture)
  • TypeORM & Prisma ORM
  • MongoDB Document Stores

Frontend & Mobile Ecosystem

  • TypeScript & JavaScript (ES6+)
  • Vue 3 (Composition API & Script Setup)
  • Quasar Framework (SPA / PWA Suites)
  • React & Next.js (App Router & SSR)
  • Tailwind CSS & Modern Design Systems
  • Flutter & Dart (Cross-Platform Mobile)
  • Pinia Reactive State Management
  • Capacitor & Mobile Web Wrappers
  • Vue.js 2 & Vuex (Legacy Maintenance)

Architecture, Versioning & DevOps

  • Private Git Registries & SemVer Governance
  • Docker & Containerization
  • Git Submodules & Multi-Repo Orchestration
  • Figma-to-Code Accessible Translation
  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 ↗

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.