Hello, I’m Sayed Hossain Khan 👋

I am a Software Engineer & API Middleware Specialist with hands-on experience in core banking systems, microservices architecture, and enterprise integration.

I currently work at City Bank PLC as an **Officer — API Middleware

Microservices

Core Banking**, contributing to mission-critical digital banking initiatives and enterprise middleware services.

My core engineering interests include Spring Boot, REST APIs, ESB, Oracle, microservices, core banking integration, DevOps, data engineering, AI, and machine learning.

Download CV Explore Projects

Professional Focus

I work at the intersection of software engineering, financial technology, enterprise integration, and data-driven systems. My experience spans banking middleware, core banking applications, trade finance, AML systems, enterprise APIs, web applications, and analytics-oriented development.

6+ Years Technology Experience

Banking & FinTech Core Domain

Microservices Architecture Focus

Spring Boot Primary Backend Stack

Current Role

City Bank PLC

Officer — API Middleware | Microservices | Core Banking
July 2024 – Present

Working on enterprise and digital banking initiatives including:

City Optima
Citytouch Revamp
Google Pay (AMEX)
EDEAL
Customer Segmentation & Analysis
LOS
Great Wall
Digital Onboarding
Enterprise Middleware Services

Technology stack: Spring Boot · React · Python · ESB

Technical Snapshot

### Backend & Frameworks Spring Boot · ASP.NET · Django · Node.js · Laravel

### Frontend Angular · React · Bootstrap · JavaScript

### Databases Oracle · MySQL · PostgreSQL · MongoDB · Firebase

### Programming Java · Python · C# · C++ · JavaScript · R · PHP · SAS · MATLAB

### DevOps & Tools Docker · Git · GitHub · Linux · Windows · CCNA

### Analytics Power BI · Tableau · SPSS · Kobo Toolbox

Selected Experience

ERA Infotech Ltd.

Associate Software Engineer — Core Banking | Islamic Banking | AML | Utility | Trade Finance
October 2021 – June 2024

Worked with Spring Boot, Angular, Oracle APEX, SQL, PL/SQL, and Oracle Forms across multiple banking solutions.

Matrix Business Development Ltd.

Junior IT Officer and Content Developer
September 2019 – June 2021

Worked with PHP, JavaScript, WordPress, e-commerce, professional websites, and email automation.

Research & Publication

I co-authored “Cartoon-to-real: An Approach to Translate Cartoon to Realistic Images using GAN”, which was accepted as a poster at the International Conference on Innovation in Engineering and Technology (ICIET), Dhaka, 2018.

The project explored translating cartoon imagery into realistic images using Generative Adversarial Networks (GANs) and later secured 1st runner-up at MindSparks 2019.

View publication details →

Education

Master’s in Applied Statistics and Data Science
Jahangirnagar University · CGPA 3.75 · 2023

B.Sc. in Computer Science and Engineering
Ahsanullah University of Science and Technology · CGPA 3.353/4.00 · 2019

View education →

Areas of Interest

Cyber Security & DevOps
Artificial Intelligence & Machine Learning
Web & Mobile Application Development
Data Engineering
Financial Technology
IoT & Tech Gadgets
3D Modeling & Architecture

Let’s Connect

I am interested in opportunities and collaborations involving backend engineering, API middleware, microservices, enterprise integration, fintech, data engineering, and applied AI.

You can reach me through Email, LinkedIn, or GitHub using the links in the profile sidebar.