Backend Engineering
C# · .NET Framework · .NET Core / .NET 6/8 · ASP.NET Core · REST APIs · Microservices · Entity Framework Core · LINQ
SOFTWARE ENGINEERING · BACKEND · .NET
Hello, I'm
Fisal Hassan.
Senior Software Engineer
.NET & Backend Engineering
I build and improve dependable software — from backend services and APIs to enterprise applications — with a focus on maintainable code, practical problem-solving, and thoughtful engineering.
01 public class BackendService
02 {
03 public async Task<Result>
04 ExecuteAsync()
05 {
06 // Build with purpose.
07 return await BuildAsync();
08 }
09 }
↔ REST APIs
⌘ Cloud & CI/CD
Engineering for real-world systems
FOCUS AREAS.NET & C#Backend APIsFinTechEnterprise SystemsSQL & Data
01 / ABOUT
Turning complex requirements into practical software.
I’m a software engineer with 12+ years of experience across backend development, enterprise applications, desktop software, and web platforms.
My recent work has focused primarily on backend engineering in FinTech, including REST APIs, service integrations, database performance, and production support. I enjoy understanding how systems fit together and improving them with clear, maintainable solutions.
My experience also spans postal automation, supply chain, wealth management, and business applications — giving me a broad view of how software supports different real-world workflows.
12+Years in software development
5+Years in FinTech projects
Full lifecycleDevelopment to deployment support
02 / TOOLKIT
Tools I use to build and deliver.
A practical toolkit across backend systems, data, UI, and delivery. Technologies are grouped by area rather than by proficiency score.
Data & Persistence
SQL Server · PostgreSQL · MySQL · Redis · Stored procedures · Query optimisation · Data modelling
Architecture & Security
SOLID principles · Clean Architecture · SOA · C4 Model · JWT authentication · API design
Frontend & Desktop
JavaScript · TypeScript · Angular · React · WPF · MVVM · WinForms · HTML · CSS
Cloud & Delivery
AWS SNS · IAM · EC2 · CloudWatch · Azure fundamentals · Docker · Jenkins · Octopus Deploy · CI/CD
Quality & Collaboration
xUnit · Moq · Serilog · Swagger / OpenAPI · Postman · Git · Bitbucket · Jira · SonarQube
Additional exposure: RabbitMQ, Amazon SQS, Coralogix, automated UI testing, and AI-assisted development tools.
03 / SELECTED WORK
Projects shaped by real-world needs.
Explore 18 professional, personal, and research projects across FinTech, enterprise software, web, and desktop applications. Each card opens a dedicated project page.
PERSONAL PROJECT
01
01 · PERSONAL PROJECTIn progress
Personal Portfolio Website
A responsive portfolio presenting my engineering background, selected projects, and technical case studies in a modern, accessible design.
View project details ↗FINTECH / BACKEND
02
02 · FINTECH & ISSUER CARD PAYMENT PROCESSING
Issuer Card Payment Processing Platform
Backend engineering contributions to an issuer card-processing platform, including API work, service integrations, database optimisation, and production support
View project details ↗SECURITY / SOA
03
03 · FINTECH & CARDHOLDER DATA WORKFLOW ISOLATION
Cardholder Data Isolation Interface
A standalone Windows application designed to isolate sensitive PAN search workflows from a legacy processor through a service-oriented integration approach.
View project details ↗DESKTOP / AUTOMATION
04
04 · POSTAL AUTOMATION
Postal Automation Platform
Enhancements and testing for desktop applications supporting postal and retail workflows across international markets.
View project details ↗BUSINESS APPLICATION
05
05 · RESTAURANT MANAGEMENT
Restaurant Management System
Admin features and web services for restaurant workflows, including a KNET payment gateway integration.
View project details ↗BUSINESS APPLICATION
06
06 · TIMESHEET AND PROJECT MANAGEMENT
Timesheet Management System
Employee and project timesheets, approvals, reporting, and service integration, including database design and deployment support.
View project details ↗SUPPLY CHAIN
07
07 · SUPPLY CHAIN & LOGISTICS
Supply Chain Management
Web application and WCF service development, data operations, reporting, and integration support for mobile application teams.
View project details ↗WEALTH MANAGEMENT
08
08 · WEALTH MANAGEMENT
Wealth Management Application
Web application development, WCF services for mobile apps, database operations, and reporting support.
View project details ↗WEB APPLICATION
09
09 · ONLINE ORDERING
Online Cake Ordering Application
A web application for online cake ordering, with contributions to web functionality and database-backed features.
View project details ↗WEB & CMS
10
10 · WORDPRESS AND CMS DEVELOPMENT
WordPress Development & Customization
Custom PHP code, WordPress plugin creation, theme customisation, database operations, and website maintenance.
View project details ↗CORPORATE WEB / CMS
11
11 · CORPORATE WEBSITES AND CMS
Corporate Websites & CMS Solutions
Development, customisation, and maintenance across corporate and business websites using different CMS platforms.
View project details ↗MESSAGING / SERVICES
12
12 · MESSAGING APPLICATION
Messenger Application
WCF service support and application maintenance for a messaging application with mobile integration.
View project details ↗PAYMENTS / MERCHANT SERVICES
13
13 · PAYMENT COLLECTION AND MERCHANT SERVICES
Merchant Application
Code-level changes in the data access layer and SQL Server schema corrections for a web-based merchant application.
View project details ↗E-COMMERCE
14
14 · E-COMMERCE
E-commerce Web Applications
Selected e-commerce application development and maintenance across client projects, including legacy ASP.NET/VB.NET work.
View project details ↗WEB APPLICATIONS
15
15 · MATRIMONIAL WEB APPLICATIONS
Matrimonial Web Applications Development
Development and maintenance of PHP/MySQL matrimonial web applications with custom front-end functionality.
View project details ↗WINDOWS DESKTOP
16
16 · COMMUNITY MANAGEMENT
Mosque Management System
A Windows desktop application for membership, mosque asset management, searchable records, reporting, and member photo capture.
View project details ↗INTERNAL TOOL
17
17 · INTERNAL PRODUCTIVITY TOOL
Notes Management Application
A small internal Windows application for creating, editing, searching, and organising notes, with a service-oriented design.
View project details ↗RESEARCH & DEVELOPMENT
18
18 · AUTOMOTIVE / GARAGE MANAGEMENTResearch only
Auto Garage Management System — R&D
Early-stage research into garage workflows, business requirements, and a potential Windows desktop technology stack. Not a completed product.
View project details ↗Project summaries are intentionally high-level. Client names, sensitive payment details, proprietary source code, and confidential architecture are not published.
04 / EXPERIENCE
Experience grounded in delivery.
A cross-domain background, with recent focus on FinTech backend engineering and enterprise services.
OCT 2018 — FEB 2026
Senior Software Engineer
Art Technology and Software India Pvt Ltd · Kochi, India
Worked across FinTech and enterprise projects, progressing from application development and production support to backend-focused engineering, REST APIs, service integrations, database optimisation, and delivery support.
EARLIER CAREER
Software Development Roles
Enterprise, web, and desktop application projects
Built and maintained business applications across postal automation, supply chain, wealth management, e-commerce, CMS, and internal management systems. Responsibilities included application development, WCF services, database work, reporting, testing, and deployment support.
05 / HOW I WORK
Thoughtful engineering, practical outcomes.
Understand the problem
Clarify requirements, trace dependencies, and understand the business workflow before changing code.
Build for maintainability
Use clear boundaries, readable code, and established design principles where they add value.
Test and improve
Validate behaviour, investigate defects, and improve reliability through careful troubleshooting.
06 / CONTACT
Have a role or project in mind?
I'm happy to connect about software engineering opportunities, backend development, and interesting technical challenges.