Freelance Software Engineer

Senior Software Engineer & Technical Consultant

May 2018 - Present (7+ years) • Self-employed

Remote, Global

• Successfully delivered 150+ software projects for international clients through Upwork, Fiverr, LinkedIn, and direct contracts across 30+ countries.

• Built enterprise solutions for healthcare, fintech, e-commerce, and SaaS platforms with 98% on-time delivery rate and 5-star client ratings.

• Architected scalable Web APIs, and blazor applications using Layered Architecture, Clean Architecture, Vertical Slice Architecture,, DDD, and CQRS patterns.

• Integrated AI capabilities including OpenAI, custom AI agents, and LLM-powered features into production systems.

Tech Stack: C#, ASP.NET Core, Web API, EF Core, Blazor, MudBlazor, LINQ, MSSQL, Azure DevOps, Serilog, Unit & Architecture Testing

Linkiify

Senior Software Engineer

May 2023 - September 2025 (2 years 5 months) • Contract

Zurich, Switzerland (Remote)

• Collaborated closely with stakeholders to develop high-quality, production-ready products.

• Built scalable .NET applications and streamlined CI/CD pipelines in Azure DevOps, reducing release cycles by 30%.

• Developed APIs that enhanced system performance by 20% through optimized code and architecture.

• Implemented Blazor applications with Azure AD B2C authentication, serving thousands of users securely.

Tech Stack: C#, ASP.NET Core, Web API, EF Core, LINQ, MSSQL, Azure DevOps, Serilog, Unit & Architecture Testing

Rushd Consulting

Backend Developer

April 2025 - May 2025 (2 months) • Contract

Riyadh, Saudi Arabia (Remote)

• Delivered production-grade APIs, increasing system scalability by 25% through optimized design patterns.

• Applied DDD, Clean Architecture, and Vertical Slice Architecture to produce maintainable backend solutions.

• Refactored legacy codebase following Clean Code principles, boosting system efficiency by 25%.

Tech Stack: C#, ASP.NET Core, Web API, Entity Framework Core, LINQ, MSSQL, Git

Bundaberg Sugar Ltd

.NET Developer

May 2024 - July 2024 (3 months) • Contract

Bundaberg, Queensland, Australia (Remote)

• Developed new features and refactored existing web applications, improving system reliability by 15%.

• Applied Layered Architecture and Repository Pattern to maintain clean, scalable code.

Tech Stack: C#, ASP.NET Core, Entity Framework Core, LINQ, MSSQL, Serilog, xUnit, Layer Architecture, Repository Pattern, Architecture Testing

Staplefoods

Senior Software Engineer

October 2020 - April 2023 (2 years 7 months) • Full-time

Munich, Bavaria, Germany (Remote)

• Built scalable .NET applications with CI/CD in Azure DevOps, reducing deployment time by 30%.

• Developed Blazor apps with Azure AD B2C for secure authentication and improved development speed by 40%.

• Optimized APIs and application architecture, enhancing performance by 25%.

Tech Stack: C#, ASP.NET Core, Web API, EF Core, LINQ, MSSQL, Blazor, MudBlazor, Git, Azure DevOps (CI/CD), Azure AD B2C, xUnit, Serilog, Layer Architecture, Repository Pattern, Unit & Architecture Testing

Sidebench

Backend Developer

September 2021 - December 2021 (4 months) • Contract

Los Angeles, California, United States (Remote)

• Built efficient API endpoints for the Kensho Health project.

• Improved backend performance by 20% by applying Clean Architecture principles.

• Collaborated with the Scrum team to deliver new features on schedule.

Tech Stack: C#, ASP.NET Core, Web API, Entity Framework Core, LINQ, MSSQL, Dapper, JIRA, Slack, Git, Agile, Scrum, Clean Architecture

Guardian Life Insurance Limited

Senior Software Engineer

March 2017 - September 2020 (3 years 7 months) • Full-time

Dhaka, Bangladesh (Hybrid)

• Developed customer-facing portals, reducing processing times by 20% and improving business efficiency by 15%.

• Designed internal applications for Insurance Management, Inventory, Reinsurance, and Online Term Life Insurance systems.

• Engaged with stakeholders to gather requirements and deliver solutions that aligned with business objectives.

• Independently handled production deployments and maintained high-quality code adhering to technical specifications.

Tech Stack: C#, ASP.NET MVC, Entity Framework, LINQ, MSSQL, Stored Procedures, Dapper, RDLC, Layer Architecture

Guardian Life Insurance Limited

Software Engineer

August 2016 - February 2017 (7 months) • Full-time

Dhaka, Bangladesh (Hybrid)

• Designed and managed SQL Server databases, created complex queries, stored procedures, and scheduled jobs.

• Configured and hosted projects on Windows Server 2012 R2 and implemented Business Intelligence solutions using SSRS.

• Integrated SSLCommerz payment gateway for secure online transactions in insurance applications.

• Developed various applications using ASP.NET MVC 5, including SME Calculator and Management Systems.

Tech Stack: C#, ASP.NET MVC, Entity Framework, LINQ, MSSQL, Stored Procedures, Dapper, RDLC, Layer Architecture

Index Group

Software Developer

October 2014 - August 2016 (1 year 11 months) • Full-time

Dhaka, Bangladesh (On-site)

• Implemented UI features and minor backend enhancements in ASP.NET MVC applications.

• Assisted with application maintenance and gained foundational experience.

• Installed and maintained internal software applications, systems, and provided technical support.

Tech Stack: C#, ASP.NET MVC, Entity Framework, LINQ, MSSQL, HTML, CSS, JavaScript, jQuery, Ajax