Available for Senior Full-Stack & Remote Roles

Building Scalable SaaS & High-Performance Platforms

I'm Partho Saroti Kar, a Senior Software Engineer with 9 years of expertise crafting enterprise architectures, distributed systems, and heavy-load backend infrastructures.

Email parthokar90@gmail.com
Experience

9+ Years Active

Location

Dhaka, Bangladesh

Phone

+880 1765-456090

View Projects Resume

Laravel, PHP & Python

Enterprise Backend Dev

01

Scalable Architecture

SaaS • Queues • Event Driven

02

Performance Tuning

MySQL • Redis • Kafka

03

Projects & Open Source

01 . Enterprise SaaS

SaaS HRMS Platform

Enterprise-grade multi-tenant SaaS HRMS platform with payroll, attendance, leave management, salary automation, and tax management.

Problem Solved & Impact

Automated complex corporate payroll and multi-region tax calculations, reducing HR processing overhead by 70% for tenant companies while maintaining zero-downtime data syncing.

Technical Stack

Core: Laravel, Python
Database: PostgreSQL, Redis
Authentication: Custom Multi-Tenant JWT
Testing: PHPUnit, PyTest
DevOps: Docker Containerization
CI/CD: GitHub Actions Pipeline
Server: AWS EC2 & RDS

Staging: saas-hrms.predictionit.site

Email: info@predictionit.com

Password: 12345678

Live Demo
02 . Web Platform

Multi-Vendor E-commerce

Full-featured multi-vendor digital marketplace with seamless vendor onboarding, automated split order items, and dynamic commission management.

Problem Solved & Impact

Built a highly secure, automated vendor commission distribution engine that completely eliminated calculations errors and simplified multitenant financial reporting.

Technical Stack

Core: Laravel (PHP)
Database: MySQL, Redis
Authentication: Laravel Sanctum
Testing: Pest Framework
DevOps: Docker Containerization
CI/CD: GitHub Actions automated deployment
Server: DigitalOcean Droplet
GitHub Live Demo
03 . Management App

POS & Inventory System

Laravel-based sales processing and warehouse asset lifecycle management system with live stock tracking, sales logs, and supplier workflows.

Problem Solved & Impact

Streamlined asset audibility across multiple warehouse locations simultaneously, cutting data lag and providing instant stock level warning system to prevent supply shortfalls.

Technical Stack

Core: Laravel, jQuery
Database: MySQL
Authentication: Session Based Laravel
Testing: PHPUnit Browser Kits
DevOps: Docker Containerization
CI/CD: Automated Build Triggers
Server: DigitalOcean Droplet
GitHub Live Demo

BudgetMate AI

Active Project
View Source

An AI-powered group & family expense manager that helps you track, analyze, and optimize your spending with personalized financial coaching.

Layer Technologies Stack
Frontend Next.js, Tailwind, Recharts
Backend FastAPI, Python
AI / LLM LangChain, Groq (Llama 3)
RAG Context LangChain + pgvector
Database PostgreSQL / pgvector
Cache & Deploy Redis, Docker, Docker Compose
Semantic Search Vector Mapping • Distributed Memory Architecture
04 . IoT & Real-time Data

Real-Time Vehicle Tracking

A low-latency, GPS-based fleet monitoring system featuring geo-fencing, live engine health analytics, and instant alerts built over distributed microservices.

Problem Solved & Impact

Successfully scaled to ingest and process high-frequency concurrent telemetry data for 500+ active vehicles. Reduced data processing delay to sub-seconds using Go WebSockets.

Technical Stack

Core: Go (Golang), Laravel
Database: PostgreSQL, Redis
Authentication: OAuth2 / Bearer Token
Testing: Go Testing Package
DevOps: Docker Multi-stage Build
CI/CD: GitHub Actions & Docker Hub Pipeline
Server: AWS EC2 Cluster
Company Website
05 . Open Source Package
GitHub | Packagist

Laravel Admin Core

Reusable backend boilerplate providing robust role-based access control (RBAC) and automated CRUD engines.

Authentication: Spatie RBAC / Custom Guards
Testing: Pest Architecture Testing
DevOps: Dockerized Dev Env
CI/CD: GitHub Workflows (Packagist Auto-Sync)
Composer Laravel RBAC
06 . Hardware Integration

Python Attendance SDK

Python-based attendance device integration library operating via low-level network socket communication protocols.

Protocol: TCP/IP Sockets, ZK SDK
Testing: Mocked Hardware Unit Tests
DevOps: Multi-Arch Docker Ready
CI/CD: GitHub Actions (PyPI Publishing Setup)
Python Sockets Automation

Technical Expertise

Skills & Technologies

Backend Engineering

PHP 8 Laravel REST API Python OOP

Frontend

React Tailwind CSS Bootstrap

Databases

MySQL PostgreSQL Redis Query Optimization

Cloud & DevOps

AWS DigitalOcean Docker CI/CD GitHub Actions Linux Server cPanel Nginx Apache

Messaging & Queues

Apache Kafka Redis Queue Event Driven

Python Engineering

Python Attendance SDK

Engineering Practices

Git / Version Control Git Flow PHPUnit TDD Unit Testing Feature Testing

Career Journey

Professional Experience

Senior Software Engineer

Prediction Infotech Limited

On-site · Bangladesh

Mar 2024 — Present

SaaS-Based HRMS — Lead Developer (End-to-End System Ownership)

  • Led end-to-end development of a multi-tenant SaaS HRMS platform from scratch using Laravel, PHP 8, and MySQL, serving 10+ enterprise clients with strict data isolation, with a small core team of 3 engineers.
  • Designed full system architecture, database schema, and scalable modular OOP/MVC structure for payroll, attendance, leave, loan, tax, and employee lifecycle management.
  • Optimized database performance by ~70% (400ms → 120ms) using indexing strategies, query optimization, caching, and high-volume data tuning for 5,000+ users.
  • Implemented CI/CD pipelines using GitHub Actions with automated deployment across AWS and DigitalOcean environments.
  • Developed RESTful APIs for HRMS modules and integrated Redis queue + Apache Kafka for event-driven processing and background jobs.
  • Built React-based frontend integration with Laravel APIs for real-time dashboards.
  • Implemented TDD using PHPUnit and Xdebug for unit and feature testing.
  • Collaborated closely with product and design teams to convert business requirements into scalable technical solutions.

Software Engineer

Singularity Limited

Tejgaon, Dhaka · On-site

Feb 2023 — Jan 2024

Real-Time Vehicle Tracking System — Team-Based Product Development

  • Developed a real-time GPS vehicle tracking system from scratch with a team, processing live data from 500+ vehicles using Laravel, MySQL, and PostgreSQL.
  • Implemented geo-fencing, engine monitoring, and low-latency tracking algorithms for real-time vehicle movement analysis.
  • Built RESTful APIs and integrated a React-based dashboard for live tracking visualization.
  • Designed an event-driven notification system (Email, SMS, Push) for alerts and monitoring.
  • Managed CI/CD deployments on AWS and DigitalOcean with performance tuning and debugging.

Senior Software Engineer

Bohon Bangla Limited

Banani, Dhaka · On-site

Oct 2019 — Dec 2022

Parcel Magic — SaaS Delivery Platform (Team-Based Development)

  • Led development of the Parcel Magic delivery SaaS platform using Laravel & MySQL with a team-based approach from scratch.
  • Built a real-time order tracking system with automated Email/SMS notifications and status synchronization.
  • Integrated third-party courier APIs (RedX, eCourier) using REST APIs and webhooks.
  • Designed scalable backend architecture and RESTful APIs for web and mobile clients.

Software Engineer

Far-East IT Solutions Ltd

Uttara, Dhaka

Mar 2016 — Jun 2019

HRMS & Custom Web Applications

  • Developed HRMS and enterprise web applications using PHP, Laravel, and MySQL.
  • Worked across the full SDLC including requirement analysis, backend development, database design, testing, and production support.
  • Improved system performance through query optimization and caching strategies.
  • Collaborated with clients and cross-functional teams for requirement gathering and delivery of scalable solutions.

Academic & Professional Development

Education & Certifications

Degree

Bachelor of Science in Computer Science & Engineering

University of Asia Pacific

2011 — 2015
Professional BootCamp

DevOps & Cloud Engineering

BongoDev (Credential ID: Verified)

Jan 01, 2026

Hands-on intensive specialization in modern enterprise infrastructure deployment. Validated expertise in building production-ready CI/CD automation pipelines, orchestrating cloud architecture, and practicing immutable infrastructure workflows.

View Official Certificate

Bootcamp Curriculum Core

"Their hands-on work with DevOps tools, cloud platforms, and deployment practices reflects strong potential for real-world engineering roles."

Cloud Platforms & Core Infrastructure
AWS / GCP Linux SysAdmin Networking & IAM
Containerization & Orchestration
Docker Docker Compose Kubernetes (K8s)
Automation & CI/CD Pipelines
GitHub Actions Jenkins / GitLab CI
Infrastructure as Code & GitOps
Terraform (IaC) Ansible Config

Open Source Work

Explore My GitHub Projects

Laravel packages, scalable backend architectures, e-commerce systems, inventory solutions, and enterprise software engineering projects.

Visit GitHub Profile

Let's Build Something

Let's Work Together

Interested in scalable SaaS systems, enterprise applications, backend engineering, or performance optimization? Let's connect.

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