Software Engineer Backend

Specializing in Node.js & Cloud Architecture

5+ years building scalable, secure microservices and cloud-native systems

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About Me

Senior Backend Engineer with expertise in scalable microservices, cloud architecture, and payment systems

Senior Backend Engineer

5+ years of experience as a Software Engineer. I'm a quick learner who loves solving problems and picking up new skills—even rocket science too if needed and always ready to learn.

5+ years of hands-on experience in backend development with Node.js, Docker, Kubernetes, AWS, gRPC, Elastic Search and microservices. I build scalable, secure, and high-performance systems that handle millions of users.

Strong background in payment gateways (12+), real-time systems, AWS, and DevOps. I’ve built systems that process $1.2M+ monthly with 99.95% uptime.

Looking for a senior backend role where I can use my skills in APIs, cloud systems, and distributed architecture to build great products.

Backend Technologies

Node.js TypeScript Express.js Microservices

Cloud & DevOps

AWS Docker Kubernetes Redis

Key Metrics

5+
Years Experience
$1.2M+
Monthly Transactions
99.95%
System Uptime
12+
Payment Gateways

Database Systems

NoSQL: MongoDB, Redis, Elasticsearch

SQL: PostgreSQL, MySQL

Caching: Redis, In-Memory Caching

Search: Elasticsearch, Full-text Search

Real-Time Systems

Messaging: RabbitMQ, Apache Kafka

WebSockets: Socket.io, Real-time Communication

Protocols: gRPC, MQTT, HTTP/2

Event-Driven: Pub/Sub, Event Sourcing

Security & Monitoring

Security: JWT, OAuth, RBAC, PCI-DSS

Monitoring: Grafana, New Relic, Datadog

Testing: Unit Testing, Integration Testing

Performance: APM, Load Testing, Optimization

Ready to Build Scalable Solutions

Looking for opportunities to architect robust backend systems, optimize performance, and lead technical initiatives in a collaborative environment.

Get In Touch View Projects

Professional Experience

Total Experience: 5+ Years

Software Engineer Backend(Node.js)

Technonext Ltd (Concern of US-Bangla Group)

Mar 2023 – Present

Current Role

Key Achievements

  • Led migration of legacy system to microservices architecture, improving scalability
  • Optimized API response time through Redis caching and query optimization
  • Integrated all major Bangladeshi payment gateways, including PCI-DSS compliant solutions for MTB, EBL, City Bank, BRAC, DBBL, bKash, Nagad, Upay, along with their refund APIs.
  • Reduced production bugs introducing comprehensive unit testing

Key Responsibilities

  • Designed scalable web & enterprise applications using Node.js, Express, Etc.
  • Ensured code quality through unit testing and peer reviews
  • Collaborate with cross-functional teams to analyze, design, and implement new features.
  • Achieve the goals set by the project manager
  • Perform Unit test and ensure proper test coverage as per organizational standard.

Software Engineer (Node.js)

Aventra Consultant Ltd

Dec 2021 – Mar 2023

1.3 Years

Key Achievements

  • Built real-time notification system using WebSockets
  • Integrated Nagad payment gateways, processing
  • Automated deployment process using GitHub Actions,

Key Responsibilities

  • Developed RESTful APIs for SaaS platform
  • Ensured mobile responsiveness and cross-browser compatibility
  • Contributed to full SDLC in Agile environment

Web Developer (Full Stack)

HR Group

Oct 2018 – Nov 2020

2.1 Years

Key Achievements

  • Improved system performance through code optimization
  • Reduced page load time fromvia lazy loading and asset optimization
  • Trained junior developers in React best practices

Key Responsibilities

  • Led refactoring of legacy codebase to modern MERN stack
  • Developed custom CMS solutions for enterprise clients
  • Managed 3-member developer team

Junior Web Developer

Ultimate IT Solution

Feb 2017 – Sep 2018

1.7 Years

Key Achievements

  • Built admin dashboard that reduced content update time
  • Implemented SEO best practices
  • Implemented Google Analytics tracking for data-driven decisions

Key Responsibilities

  • Developed WordPress themes/plugins and custom PHP applications
  • Created responsive UIs with Bootstrap
  • Developed custom PHP applications

Featured Projects

Foodi Logo

Foodi - Food Delivery Platform

foodibd.com
Node.js gRPC RabbitMQ Redis AWS S3 Elasticsearch

Key Achievements

  • Designed microservices architecture handling
  • Integrated 12+ payment gateways (PCI-DSS compliance)
  • Developed fraud prevention system reducing payment disputes

Advanced Features Implemented

  • Rider payment system via Upay/bKash collections
  • Face recognition auth for rider verification (90% accuracy)
  • Location-based bulk notification system (push/email)
  • Banking: MTB, EBL, City Bank integration
Foodi Logo

CartUp - E-Commerce Platform

cartup.com
Node.js Express MongoDB Redis

Key Achievements

  • Built unified payment gateway integration supporting Credit Cards (Visa/MasterCard/Amex), Mobile wallets (bKash/Nagad), and Bank transfers (3+ Bangladeshi banks)
  • Reduced checkout abandonment through optimized payment flows
Foodi Logo

FirstTrip - Travel Booking System

firsttrip.com
Node.js API Integration Multi-Currency

Key Achievements

  • Developed multi-currency payment system with dynamic conversion
  • Integrated hotel/flight booking APIs

Education

Bachelor of Science in Computer Science & Engineering

International Islamic University Chittagong

2012 – 2016

CGPA: 3.05/4.00

Relevant Coursework

Data Structures Algorithms Database Systems Software Engineering Computer Networks

Technical Skills

Backend Development

Node.js
Express
Microservices
gRPC

Real-Time Systems

RabbitMQ
MQTT
WebSockets
Google Distance Matrix API

Data & Caching

Redis
Elasticsearch
MongoDB
PostgreSQL

Cloud & DevOps

AWS (EC2, S3)
Docker
Kubernetes
Terraform

Payment & Security

PCI-DSS Compliance
bKash/Nagad/Upay APIs
Banking APIs
Fraud Prevention

Monitoring & Observability

Grafana
APM Tools
Performance Monitoring
System Analytics

Payment Gateway Integration Expertise

Banking Solutions

MTB Bank EBL City Bank BRAC Bank DBBL

Mobile Payment Solutions

bKash Nagad Upay PCI-DSS Compliant

Let's Connect

Ready to Build Something Amazing?

I'm actively exploring backend engineering roles where I can contribute to building secure, scalable, and resilient cloud-native systems. Let's discuss how I can help your team succeed.

Professional Training & Certifications

System Design & Backend Engineering

Poridi Paid Course

DevOps Career Path

Interactive Care Paid Course

JavaScript Advanced Concepts

Udemy Paid Course (2021)

Continuous Learning

Multiple Certifications

Email

shahjadanaimuddin@gmail.com

LinkedIn

linkedin.com/in/naim365

GitHub

github.com/Naim365

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