// portfolio

Projects & Work

Architecture decisions, backend systems, and platform engineering work across 7+ years and multiple domains.

Architecture Platform
AppSquadz · 2023–Present

SaaS Platform Re-Architecture

Led the complete re-architecture of a legacy CodeIgniter monolith into a Distributed Modular Monolith using NestJS. Domain-driven services run as independent EKS pods while sharing centralized MySQL and Redis, retaining transactional consistency without full microservices complexity.

Reduced deployment coupling across 4+ business domains
Maintained single DB for transactional consistency
Enabled independent service scaling on EKS
NestJSTypeScriptAWS EKSMySQLRedisDDDKubernetes
Architecture Backend
AppSquadz · 2023–Present

Multi-Tenant Isolation Engine

Designed and implemented the complete database isolation strategy and tenant-scoped data model for a multi-tenant SaaS platform. Built row-level tenant isolation with shared schema architecture to balance isolation guarantees with operational simplicity.

Row-level tenant isolation with zero cross-tenant data leakage
Redis-based per-tenant caching layer
Supports N tenants with single operational overhead
MySQLRedisNestJSDDDRepository Pattern
Backend FinTech
RNFI Services · 2021–2022

FinTech Payment API Platform

Built the backend payment processing API platform for RNFI, a financial services company. Delivered high-reliability PHP APIs handling transaction workflows, real-time reconciliation, and data integrity enforcement for financial data pipelines in a production environment.

Zero-tolerance data integrity for financial records
Transaction workflow orchestration APIs
High-availability production deployment
PHPMySQLREST APITransactions
Architecture
AppSquadz · 2022–Present

Domain-Driven API Design System

Designed and standardized the API architecture framework across all backend services using DDD principles. Established bounded contexts, domain entity models, aggregates, and service contracts enabling consistent, independently evolvable API surfaces.

Bounded context mapping for 4+ business domains
Consistent API contracts across all services
Domain entity validation and aggregate design
NestJSDDDTypeScriptOpenAPI
Platform
AppSquadz · 2023–Present

Production Observability & Reliability

Partnered with DevOps to build an observability layer across the EKS-deployed platform. Implemented structured logging, distributed tracing, and alerting strategies. Led production incident analysis and postmortem workflows to improve system MTTR.

Distributed tracing across NestJS modules
Structured logging strategy for EKS pods
Incident analysis & reduced production MTTR
AWS EKSKubernetesLoggingTracingAlerting
Backend
Webcity Technologies · 2019–2020

Web Application Backend Platform

Developed backend systems for client-facing web applications using PHP. Designed database schemas, built server-side business logic, and delivered complete backend solutions across multiple client projects — forming the foundational engineering experience.

Multiple full-stack PHP web applications delivered
Relational schema design and optimization
End-to-end client-facing feature development
PHPMySQLJavaScriptHTML/CSS

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