Full-Stack Software Engineer

000
Portfolio

Kaiser Kamruzzaman

Full-Stack Software Engineer

I build scalable web applications and enterprise software that solve real business problems. With 5+ years of experience, I specialize in React, Next.js, Node.js, and PostgreSQL, with hands-on experience in AWS and cloud infrastructure.

Connect:
Kaiser Kamruzzaman

About Me

I'm a full-stack software engineer with 5+ years of experience building scalable web applications, enterprise systems, and workflow automation tools.

Previously, at K Line Europe GmbH in Germany, I developed manufacturing management systems used daily by 10+ production teams, automated workflows that improved production efficiency by 30%, and built customer-facing portals for doctors and distributors.

My core expertise includes React, Next.js, TypeScript, Node.js, and PostgreSQL, complemented by hands-on experience with AWS, Docker, and CI/CD pipelines.

I enjoy solving complex business problems, designing maintainable software architectures, and building applications that make a measurable difference in how businesses operate.

5+

Years Experience

10+

Production Teams Supported

~7×

Growth in Daily Production

Skills & Technologies

Programming Languages

JavaScriptTypeScriptPHPPythonC/C++SQL

Frameworks & Libraries

React.jsNext.jsNode.jsExpress.jsLaravelDjango

Databases

MySQLPostgreSQLSQL ServerOracleMongoDBRedis

DevOps & Cloud

AWSDockerKubernetesCI/CDTerraformGitHub Actions

Tools & Platforms

GitVS CodePostmannpm/YarnChrome DevToolsLinux

Concepts & Architecture

IaCOOPREST APIsMicroservicesMonitoring & Logging

Experience

Full-Stack Software Engineer

February 2022 – September 2026
K Line Europe GmbHDüsseldorf, Germany
  • Developed and maintained a Manufacturing Execution System (MES) used by 10+ production teams to track products across 20 production stages, supporting a nearly 7× increase in daily production.
  • Automated pouch printing workflows, improving production efficiency by 30% and reducing manual errors.
  • Implemented an SLA workflow that improved production throughput by 20% and streamlined revenue calculations.
  • Built a white-label OEM portal for doctors and distributors, supporting order management, communication, and production tracking.
  • Developed a QR-code-based dynamic case card system, centralizing product information from 3D printing through shipment.
ReactNext.jsNode.jsPostgreSQLTypeScriptAWSPrisma

Programmer

July 2019 – December 2020
Digicon Technologies LtdDhaka, Bangladesh
  • Developed complaint management systems using PHP and MySQL, improving call-center efficiency and reducing information errors by 25%.
  • Built a complaint management portal for malaria control, adopted by Dhaka City Corporation.
  • Created an internal task management system for assigning, tracking, and monitoring employee tasks across departments.
PHP (OOP)MySQLJavaScriptLaraveljQuery

Featured Projects

MES (Manufacturing Execution System)

Enterprise web application enabling seamless collaboration among 10+ teams across 20 production steps, with real-time tracking from production start to final shipping.

  • Improved daily production nearly 7x through optimization
  • Real-time tracking & tracing for every product stage
  • Advanced analytics for team & employee performance
  • API integration for data collection, notifications & forecasting
ReactNext.jsNode.jsPostgreSQLTypeScriptAWSPrisma

OEM Portal for Doctors & Distributors

Customizable OEM portal enabling doctors and distributors to manage orders, communicate with the company, and track production to shipment status while maintaining brand identity.

  • Seamlessly integrated with MES for automated production
  • White-label design for easy client branding customization
  • End-to-end order management & real-time status tracking
  • Direct communication channel between OEM providers & company
ReactNext.jsNode.jsPostgreSQLTypeScriptAWSPrisma

Complaint Management System

Comprehensive BPO complaint tracking system streamlining customer issue resolution with automated workflows and real-time status monitoring.

  • Reduced page load time by 30% through query optimization
  • User authentication, complaint logging & status tracking modules
  • Automated daily reporting workflows for agent-supervisor transparency
  • Enhanced system performance via optimized database & session handling
PHP(OOP)LaraveljQueryREST APIMySQL

Certifications & Training

Continuous learning and professional development through industry-recognized certifications and specialized training programs.

2025

AWS Certified Cloud Practitioner

Amazon Web Services

Foundational knowledge of AWS cloud services, architecture, and security.

AWSCloud ArchitectureSecurityBest Practices
2025

AWS Solutions Architect Associate

Udemy

Comprehensive knowledge of designing distributed systems, scalable architectures, and cost-optimized solutions on AWS.

AWSSolution ArchitectureEC2S3VPCIAM
2025

DevOps Beginners to Advanced with Projects

Udemy

Comprehensive DevOps training covering CI/CD pipelines, containerization, automation, and infrastructure as code with hands-on projects.

CI/CDDockerJenkinsGitLinuxAutomation

Education

BSc in Computer Science & Engineering

American International University-Bangladesh

Dhaka, Bangladesh
2015 – 2018

Relevant Coursework

  • Data Structures & Algorithms
  • Object-Oriented Programming
  • Database Systems
  • Operating Systems
  • Computer Networks
  • Machine Learning

Get In Touch

Let's Connect

I'm open to full-stack software engineering opportunities, interesting projects, and meaningful collaborations. Whether you're hiring, have a project in mind, or simply want to connect, feel free to reach out.

Email

kaiserkamruzzaman@gmail.com

LinkedIn

linkedin.com/in/kaiserkamruzzaman

Location

Duisburg, Germany