Nazmul Hosen
Backend-focused Lead Software Engineer with 4+ years of experience designing scalable microservices, leading engineering teams, and delivering high-performance enterprise solutions.
class SoftwareEngineer extends BackendSpecialist {
constructor() {
this.experience = '3+ years';
this.specialization = 'Backend Development';
this.focus = 'Scalable Systems';
this.role = 'Software Engineer';
this.expertise = [
'Microservices Architecture',
'REST API Development',
'Database Design (MySQL/PostgreSQL)',
'System Design & Optimization'
];
}
buildSystem() {
return this.scalability + this.performance + this.maintainability;
}
}Software Engineer with 3+ years of experience building and maintaining scalable backend systems. Specialized in developing high-performance APIs, microservices, and data-driven applications that solve real-world business problems.
Currently working as a Software Engineer at Tech Element IT, contributing to the development of robust software solutions, optimizing system performance, and collaborating with cross-functional teams to deliver reliable products.
Experienced in Node.js, TypeScript, MySQL, and PostgreSQL with a strong focus on clean architecture and efficient system design. Passionate about continuous learning, improving system scalability, and delivering high-quality software.
const currentPriorities = {
architecture: 'Scalable backend systems',
backend: 'Node.js & TypeScript',
database: 'Query optimization & design',
learning: 'System design & distributed systems',
performance: 'Efficient API responses',
reliability: 'High availability systems'
};Backend Developer (Lead Full-Stack)
Leading full-stack development and backend architecture for scalable SaaS and enterprise applications. Responsible for system design, performance optimization, and cloud infrastructure management.
- →Designed and developed scalable system architectures for high-performance applications
- →Led backend development using Node.js, Express, and TypeScript
- →Implemented CI/CD pipelines and managed AWS-based deployments
- →Optimized application performance and database efficiency
- →Mentored developers and enforced coding standards and best practices
Software Engineer
Developed scalable backend systems for B2B and B2C platforms, focusing on travel and booking automation solutions.
- →Built scalable RESTful APIs using Node.js and MySQL
- →Developed OTA systems including flight, hotel, and booking modules
- →Applied OOP principles to design modular and maintainable backend systems
- →Collaborated with frontend teams to deliver high-performance APIs
- →Improved system reliability and performance in production environments
Project Manager & System Architect
Led architecture and development of a large-scale OTA platform while managing engineering teams and delivering production-grade systems.
- →Architected OTA platform serving 10K+ users with high availability
- →Managed frontend and backend teams to ensure timely and high-quality delivery
- →Integrated travel APIs including Sabre, Galileo, and Travelport
- →Improved system performance and implemented CI/CD pipelines
- →Translated complex business requirements into scalable technical solutions
Trabill
OTA Platform
End-to-end Online Travel Agency system — real-time flight search, booking, revalidation, and ticketing with Galileo/Trav...
Naria
Back-Office ERP
Multi-branch ERP for travel agencies — accounting, client and vendor management, invoicing, balance sheets with a single...
E-Paper
CMS Platform
Scalable newspaper management platform — article scheduling, editorial workflow, advertisement tracking, and analytics w...
EasyShop
Multi-Vendor E-Commerce
High-throughput multi-vendor platform with dynamic pricing, inventory management, and Stripe payment integrations. Built...
FitsAir— API Integration
Real-time flight availability, pricing validation, and booking confirmation inside an OTA microservice architecture — async queuing, retry logic, and webhook event handling.
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2022
B.Sc. in Computer Science & Engineering
University of Dhaka — Dhaka, BD
Core focus on algorithms, data structures, operating systems, and software engineering. Final year thesis on distributed microservice orchestration and fault-tolerance patterns.
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2017
Higher Secondary Certificate (HSC)
Dhaka College — Dhaka, BD
Specialised in Physics, Chemistry, and Mathematics with a perfect academic record. Developed strong analytical foundations that directly inform systems-level engineering work.