Open to opportunities

Mosiul Haque Khan

@mosiulhaquekhan

Message

I build and modernize scalable .NET SaaS platforms end-to-end.

Bangladesh

Message

What I'm looking for

I'm open to Senior Full Stack Engineer roles in SaaS companies, working remotely from anywhere or in a hybrid role in Bangladesh. I want to build, deploy, and operate reliable, scalable software while contributing to engineering quality and team growth.

I've built and operated scalable SaaS and enterprise platforms for Infosys clients Rabobank and Smartgroup, developing high-availability .NET applications, REST APIs, secure SSO and MFA solutions, and automated Azure DevOps deployments.

At Fujitsu, I developed microservices-based government systems using C#, Docker, APIs, and event-driven architecture. At Metcash, I reduced manual operational workload by approximately 95% through automated testing, data processing, reporting, and data pipeline solutions.

I take ownership from design through deployment and production support, with a focus on clean architecture, API-first design, reliable systems, and pragmatic technical decisions.

I'm also mentoring developers and using GitHub Copilot and Claude to improve delivery speed, code quality, and engineering productivity.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Engineer

Current

Binary Quest Limited

Jan 2026 - Present (7 months)

Leading development of scalable SaaS platforms for international clients using .NET and modern frontend frameworks. Owning services end-to-end, including design, development, deployment, and production support.

C#.NET Core React Next.js JavaScript TypeScript Docker CI CD GitHub Actions Azure DevOps AWS REST APIs Microservices Clean Architecture Claude

Senior Consultant (.NET Developer)

Infosys Pty Ltd

Jan 2022 - Dec 2024 (2 years 11 months)

Built and operated enterprise-grade .NET applications in high-availability banking systems. Designed and implemented RESTful APIs for scalable system integration, and implemented secure authentication systems including SSO and MFA using Azure AD.

C#.NET Core REST APIs Azure AD SSO MFA Azure DevOps CI CD Microservices SQL Server Agile

Application Developer

Fujitsu Pty Ltd

Jan 2022 - Dec 2022 (11 months)

Developed and maintained microservices-based systems using C#, Docker, and event-driven architecture. Built APIs and backend services supporting government systems, and deployed and managed services using cloud-native tooling and container platforms.

C#.NET Core Microservices Docker Event Driven Architecture REST APIs Cloud Native Containerization

Software Developer

Brand-Link Pty Ltd

Jan 2021 - Dec 2021 (11 months)

Developed and maintained business applications using .NET and SQL Server. Contributed to full software development lifecycle including design, development, and testing, and worked on data integration and reporting solutions for business clients.

C#.NET SQL Server Data Integration Reporting Software Development Lifecycle

Analysis Programmer / System Analyst

Metcash Pty Ltd

Jan 2019 - Dec 2019 (11 months)

Designed and developed automated testing and data processing systems for retail platforms, reducing manual operational workload by approximately 95% through automation solutions. Built data pipelines and reporting tools using SQL, C#, and scripting, and analyzed large datasets to support business decision-making.