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I'm a results-driven Senior Full Stack Software Engineer with over 6 years of experience designing, developing, and maintaining scalable web applications across diverse sectors. I specialize in .NET Core and C# backend development, complemented by strong frontend skills in JavaScript, HTML5, CSS3, and popular libraries like jQuery and Bootstrap. I thrive in collaborative Agile teams, led migrations to RESTful APIs, and optimize legacy code for performance and maintainability. I’m passionate about delivering high-quality, data-driven solutions and mentoring teammates to raise code quality and reliability.…I'm a results-driven Senior Full Stack Software Engineer with over 6 years of experience designing, developing, and maintaining scalable web applications across diverse sectors. I specialize in .NET Core and C# backend development, complemented by strong frontend skills in JavaScript, HTML5, CSS3, and popular libraries like jQuery and Bootstrap. I thrive in collaborative Agile teams, led migrations to RESTful APIs, and optimize legacy code for performance and maintainability. I’m passionate about delivering high-quality, data-driven solutions and mentoring teammates to raise code quality and reliability.

Mahadin Ahmed

Full Stack Developer, Back-End Developer, Front-End Developer, +4

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I'm a results-driven Senior Full Stack Software Engineer with over 6 years of experience designing, developing, and maintaining scalable web applications across diverse sectors. I specialize in .NET Core and C# backend development, complemented by strong frontend skills in JavaScript, HTML5, CSS3, and popular libraries like jQuery and Bootstrap. I thrive in collaborative Agile teams, led migrations to RESTful APIs, and optimize legacy code for performance and maintainability. I’m passionate about delivering high-quality, data-driven solutions and mentoring teammates to raise code quality and reliability.…I'm a results-driven Senior Full Stack Software Engineer with over 6 years of experience designing, developing, and maintaining scalable web applications across diverse sectors. I specialize in .NET Core and C# backend development, complemented by strong frontend skills in JavaScript, HTML5, CSS3, and popular libraries like jQuery and Bootstrap. I thrive in collaborative Agile teams, led migrations to RESTful APIs, and optimize legacy code for performance and maintainability. I’m passionate about delivering high-quality, data-driven solutions and mentoring teammates to raise code quality and reliability.

Available to hire

I’m a results-driven Senior Full Stack Software Engineer with over 6 years of experience designing, developing, and maintaining scalable web applications across diverse sectors. I specialize in .NET Core and C# backend development, complemented by strong frontend skills in JavaScript, HTML5, CSS3, and popular libraries like jQuery and Bootstrap.

I thrive in collaborative Agile teams, led migrations to RESTful APIs, and optimize legacy code for performance and maintainability. I’m passionate about delivering high-quality, data-driven solutions and mentoring teammates to raise code quality and reliability.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Javanese

Intermediate

Work Experience

Senior Software Engineer at Viget

August 1, 2022 - Present

Engineered scalable back-end services using C# .NET Core MVC with SQL Server integrations, reducing database call latency by 25%. Developed responsive front-end interfaces with JavaScript, jQuery, Bootstrap, HTML5, and CSS3 to improve accessibility and mobile UX. Led migration of legacy apps to RESTful APIs, enabling smoother integrations and better maintainability. Implemented Git-based version control with CI/CD via Azure DevOps, reducing deployment errors by 30% and accelerating releases. Collaborated with cross-functional teams in Agile ceremonies, delivered features on bi-weekly cycles. Optimized data interchange with JSON serialization. Hardened security with role-based authentication in MVC. Built reusable front-end components; refactored code to SOLID principles; improved SQL query performance; mentored junior engineers. Introduced feature toggles and A/B testing; documented tech designs; resolved production issues swiftly.

Software Engineer at Oracle Lafayette

July 1, 2022 - October 10, 2025

Designed enterprise features using C# MVC and SQL Server stored procedures; engineered REST APIs; optimized back-end and caching for improved performance. Refactored complex LINQ queries and caching of frequently accessed data, yielding a 35% improvement in service response times. Collaborated with product owners and UX designers during Agile sprints to translate requirements into software components. Configured JSON payload structures to align with REST API clients. Practiced unit and integration testing with MSTest and Selenium. Enhanced security with data validation layers and OWASP best practices. Implemented database migrations with Entity Framework. Led logging and monitoring via Application Insights and ELK; contributed to CI/CD improvements, reducing build and release times by 40%.

Software Engineer at ServiceNow Lafayette

November 1, 2019 - October 10, 2025

Developed web application modules using .NET MVC with SQL Server back end; built frontend components with JavaScript, jQuery, HTML5, and CSS3 to improve usability and responsiveness. Worked with Git repositories, performing code reviews and facilitating merges in a distributed team. Built and consumed RESTful APIs for internal service orchestration and third-party integrations. Improved SQL Server queries via indexing and query plan optimization. Collaborated with QA to design automated tests using NUnit and Selenium WebDriver. Applied Agile methodologies with proactive standups, sprint planning, and retrospectives. Refined client-side validation to enhance security and user experience. Mentored interns and junior developers, and contributed to scalable data models for workflow management.

Senior Software Engineer at Viget

August 1, 2022 - Present

Led backend services using C# .NET Core MVC with SQL Server integrations; migrated legacy apps toward RESTful API architectures; implemented Git-based version control with CI/CD via Azure DevOps; enhanced security with role-based access controls; built reusable frontend components with Bootstrap; optimized performance of SQL queries and data serialization; mentored junior engineers and contributed to architecture decisions.

Software Engineer at Oracle

July 1, 2022 - October 10, 2025

Designed and implemented enterprise features with C# MVC and SQL Server stored procedures; built REST API endpoints for scalable integrations; developed dynamic frontends with JavaScript, jQuery, and Bootstrap; improved service performance through LINQ optimization and caching; contributed to CI/CD pipelines and monitoring; implemented data validation and security measures; collaborated with product and UX teams.

Software Engineer at ServiceNow

November 1, 2019 - October 10, 2025

Developed web modules using .NET MVC and SQL Server; built RESTful APIs for internal service orchestration and third-party integrations; improved SQL performance via indexing and query analysis; collaborated with QA and UX teams; implemented automated tests and participated in Agile ceremonies; mentored interns and contributed to cross-team code reviews. Led project efforts like Task Flow Automation Platform (01/2021–12/2021) to streamline internal workflows with C#, ASP.NET Core MVC, React.js, and Material-UI.

Senior Software Engineer at Viget

August 1, 2022 - Present

Engineered scalable back-end services using C# .NET Core MVC with SQL Server; migrated legacy apps to RESTful APIs; implemented Git-based workflows and CI/CD via Azure DevOps; collaborated with cross-functional teams in Agile; built responsive front-end components with JavaScript, jQuery, and Bootstrap; improved security with role-based access and JSON data interchange.

Software Engineer at Oracle

July 1, 2022 - October 10, 2025

Designed enterprise features for a SaaS platform using C# MVC and SQL Server, delivering REST APIs for data synchronization and third-party integrations; built dynamic front-end with JavaScript, jQuery, and Bootstrap; optimized performance by refactoring LINQ queries and adding caching; implemented Git-based workflows and CI/CD with Jenkins and Git; enhanced logging/monitoring with Application Insights and ELK; collaborated with product and QA in Agile sprints.

Software Engineer at ServiceNow

November 1, 2019 - October 10, 2025

Developed .NET MVC modules with SQL Server back end; created RESTful APIs for internal workflow automation; improved front-end usability with JavaScript, jQuery, HTML5, and CSS3; used Git for version control and code reviews in a distributed team; implemented automated tests with NUnit and Selenium; collaborated with QA and product teams in Agile ceremonies; optimized backend queries and data models to support high-volume transactions.

Senior Software Engineer at Viget

August 1, 2022 - Present

Led scalable backend services using C# .NET Core MVC frameworks with SQL Server integrations, optimizing data queries and stored procedures to reduce database call latency. Developed responsive frontend interfaces leveraging JavaScript, jQuery, Bootstrap, HTML5, and CSS3 to enhance accessibility and mobile user experience. Led migration efforts to modern RESTful API architectures, facilitating smoother integration with third-party services and improving maintainability. Implemented Git-based version control and CI/CD pipelines using Azure DevOps, reducing deployment errors and accelerating release cadence. Enhanced application security with role-based authentication and authorization patterns. Constructed reusable frontend components utilizing Bootstrap for cross-product UI consistency. Refactored codebases to comply with SOLID principles, improving readability and reducing bug density. Monitored performance metrics and optimized critical SQL Server query plans, resulting in measurable

Software Engineer at Oracle

July 1, 2022 - October 10, 2025

Designed and implemented enterprise-grade REST API endpoints to enable scalable integrations, improving client data synchronization. Refactored LINQ queries and implemented caching for frequently accessed data, yielding a 35% improvement in response times. Built dynamic frontend interfaces with JavaScript, jQuery, and Bootstrap, applying responsive design to support various devices. Configured JSON payload structures to standardize data interchange for API clients. Led CI/CD pipelines in Azure DevOps, reducing deployment errors and accelerating release cadence. Strengthened security via data validation layers and OWASP best practices. Participated in database schema evolution with Entity Framework migrations and contributed to API design discussions and developer runbooks.

Software Engineer at ServiceNow

November 1, 2019 - October 10, 2025

Developed web application modules using .NET MVC with SQL Server back end, delivering enterprise-grade workflow automation features. Built frontend components with JavaScript, jQuery, HTML5, and CSS3 to improve usability and accessibility. Worked extensively with Git repositories, performing code reviews and facilitating merges within a distributed team. Built and consumed RESTful APIs for internal service orchestration and third-party SaaS integrations. Improved SQL Server performance through indexing and query plan analysis to support high-volume transactions. Collaborated with QA teams to design automated test suites using NUnit and Selenium WebDriver, enhancing test coverage. Contributed to Agile ceremonies and mentored junior developers, while refining client-side validation and data security practices.

Senior Software Engineer at Viget

August 1, 2022 - Present

Engineered scalable backend services using C# .NET Core MVC with SQL Server integrations, optimizing data queries and stored procedures to reduce database call latency. Led migration from legacy architectures to RESTful APIs to improve integration and maintainability. Implemented Git-based version control and CI/CD pipelines (Azure DevOps), reducing deployment errors by 30%. Built responsive frontend components with JavaScript, jQuery, Bootstrap, HTML5, and CSS3 to enhance accessibility and mobile UX. Configured JSON serialization, role-based authentication, and feature toggles with real-time metrics. Mentored junior engineers and contributed to architectural decisions for scalable growth.

Software Engineer at Oracle

July 1, 2022 - October 10, 2025

Designed enterprise features using C# MVC and SQL Server stored procedures to improve data integrity and performance. Engineered robust REST APIs for internal and external integrations; optimized LINQ queries and caching to boost throughput by ~35%. Developed dynamic frontend interfaces with JavaScript, jQuery, and Bootstrap for responsive UX. Used Git version control with CI/CD pipelines to enable efficient collaboration. Strengthened security through data validation and secure patterns; performed unit and integration testing with MSTest and Selenium. Collaborated with product owners and QA in Agile sprints; authored technical documentation and mentored junior engineers.

Software Engineer at ServiceNow

November 30, 2019 - October 10, 2025

Developed web application modules using .NET MVC and SQL Server back end. Built and consumed RESTful APIs for internal service orchestration and third-party integrations. Enhanced frontend usability with JavaScript, jQuery, HTML5, and CSS3, and applied responsive design principles. Collaborated via Git repositories, code reviews, and feature branches; improved server performance by optimizing LINQ queries and adding caching strategies. Implemented automated tests with NUnit and Selenium; contributed to Agile ceremonies and runbooks for operational readiness.

Lead Developer at Independent Inventory System Project

August 1, 2020 - October 10, 2025

Led the development of a full-stack inventory management system tailored for e-commerce platforms, enabling real-time stock updates and order processing. Integrated payment and logistics APIs via secure RESTful interfaces. Built frontend with React.js and Material-UI for a responsive UX; implemented server-side APIs and optimized data retrieval with indexing strategies. Established CI/CD using GitLab CI and automated deployments. Implemented concurrency controls in SQL Server to ensure data consistency during multi-user operations.

Senior Software Engineer at Viget

August 1, 2022 - Present

Senior Software Engineer responsible for building scalable backend services in C# .NET Core MVC with SQL Server, optimizing queries and stored procedures to reduce database call latency. Led migration of legacy applications to modern RESTful API architectures to enable smoother integrations with third-party services. Developed responsive frontend interfaces using JavaScript, jQuery, Bootstrap, HTML5, and CSS3 to enhance accessibility and mobile user experience. Implemented Git-based version control and CI/CD pipelines with Azure DevOps, reducing deployment errors and accelerating release cadence. Collaborated with cross-functional product and QA teams in Agile ceremonies to deliver features on bi-weekly sprints. Configured JSON serialization for efficient data interchange between frontend clients and backend services. Enforced role-based authentication/authorization within MVC patterns to improve security. Built reusable UI components and refactored legacy code to align with SOLID prin

Software Engineer at Oracle

July 1, 2022 - October 10, 2025

Designed and implemented enterprise-grade features using C# MVC and SQL Server stored procedures for a mission-critical SaaS platform. Created robust REST APIs for internal and external integrations, and developed dynamic front-end interfaces with JavaScript, jQuery, and Bootstrap. Used Git with CI/CD pipelines (Azure DevOps) to enable smooth collaboration; optimized LINQ queries and caching, yielding significant improvements in response times. Led database schema design with Entity Framework migrations. Collaborated with product owners and UX designers in Agile sprints to translate requirements into software components. Implemented JSON payload structures for consistent data interchange and conducted unit and integration testing with MSTest and Selenium. Enforced security best practices, including data validation and OWASP guidelines, and implemented logging with Application Insights and ELK. Improved CI/CD efficiency and release stability, mentoring engineers and supporting cross-tea

Software Engineer at ServiceNow

November 1, 2019 - October 10, 2025

Developed web application modules using .NET MVC and SQL Server, enhancing workflow automation. Built frontend components with JavaScript, jQuery, HTML5, and CSS3, following company UI guidelines for usability and responsiveness. Worked with Git repositories, managed feature branches, code reviews, and merges in a distributed team. Built RESTful APIs for internal services and third-party SaaS integrations. Optimized SQL Server queries through indexing and query plan analysis to support high-volume transactions. Collaborated with QA to design automated tests using NUnit and Selenium WebDriver. Applied Agile methodologies and contributed to documentation, runbooks, and knowledge sharing. Improved security with client-side validation and server-side sanitization, and designed scalable data models for workflow applications.

Software Engineer at Viget

December 1, 2021 - October 10, 2025

Architected and developed a task automation platform to streamline internal business workflows across multiple departments. Backend: C# ASP.NET Core MVC with SQL Server supporting persistent task tracking and scheduling. Frontend: React.js with Material-UI for a responsive UI. Implemented RESTful JSON APIs for integrations with internal tools. Set up Git-based version control and CI/CD pipelines (Azure DevOps). Implemented concurrency controls and optimized data flows to ensure data integrity under multi-user operations. Reduced manual workflow processing time by ~40% and improved cross-team collaboration. Authored API contracts, runbooks, and documentation; contributed to knowledge sharing.

Senior Software Engineer at Viget

August 1, 2022 - Present

Engineered scalable back-end services using C# .NET Core MVC with SQL Server integrations; optimized data queries and stored procedures to reduce database call latency by 25%. Developed responsive frontend interfaces with JavaScript, jQuery, Bootstrap, HTML5, and CSS3 to enhance accessibility and mobile UX. Led migration of legacy apps to RESTful APIs, implemented Git-based version control with CI/CD pipelines in Azure DevOps; improved security with role-based authentication. Mentored junior engineers and collaborated with cross-functional teams to drive bi-weekly feature delivery.

Software Engineer at Oracle

July 1, 2022 - October 10, 2025

Designed and implemented enterprise-grade features using C# MVC and SQL Server stored procedures; optimized queries and caching to yield significant performance improvements; built REST endpoints for scalable integrations. Utilized Git with branch workflows and CI/CD pipelines, improved test coverage, and contributed to Agile development. Integrated JSON payload structures for REST API clients; leveraged Application Insights and ELK stack for monitoring; reduced deployment time by 40%.

Software Engineer at ServiceNow

November 1, 2019 - October 10, 2025

Developed web application modules using .NET MVC, SQL Server; crafted RESTful APIs for internal service orchestration and third-party integrations. Optimized backend queries, implemented automated tests with NUnit and Selenium, and contributed to CI/CD pipelines using Jenkins and Git. Led frontend enhancements with HTML5, CSS3, JavaScript, and Bootstrap; performed production issue triage and debugging; mentored interns.

Senior Software Engineer at Viget

August 1, 2022 - Present

Engineered scalable backend services using C# .NET Core MVC frameworks with SQL Server integrations, optimizing data queries and stored procedures to reduce database call latency. Developed responsive frontend interfaces with JavaScript, jQuery, Bootstrap, HTML5, and CSS3 to enhance accessibility and mobile UX. Led migration efforts toward modern RESTful APIs, integrated with third-party services, and improved maintainability. Implemented Git-based version control and CI/CD pipelines in Azure DevOps, reducing deployment errors and accelerating releases. Applied role-based authentication, SOLID principles, and proactive debugging to improve security and code quality. Mentored junior engineers and contributed to feature toggles and A/B testing frameworks. Monitored performance and optimized SQL Server query plans, achieving notable throughput improvements.

Software Engineer at Oracle

July 1, 2022 - October 10, 2025

Designed enterprise-grade features using C# MVC and SQL Server stored procedures, enabling scalable SaaS integrations. Built RESTful API endpoints for internal and external systems, and dynamic frontend components with JavaScript, jQuery, and Bootstrap. Used Git workflows and Azure DevOps for CI/CD, improved data synchronization via JSON payloads, and optimized backend Linq queries with caching to boost service response times. Collaborated with product owners and UX teams in Agile sprints, contributed to API design, and supported secure data validation practices.

Software Engineer at ServiceNow

November 1, 2019 - October 10, 2025

Developed web application modules with .NET MVC and SQL Server, and created RESTful APIs for internal orchestration and third-party integrations. Enhanced user interfaces with JavaScript, jQuery, HTML5, and CSS3, and implemented automated tests using NUnit and Selenium. Refined backend queries for performance, implemented automated CI/CD (GitHub/Jenkins-style workflows), and contributed to security hardening through input validation and OWASP-aligned practices. Led knowledge sharing on MVC patterns and API design, and supported cross-team code mergers and reviews.

Task Flow Automation Platform at Independent Project

December 1, 2021 - October 10, 2025

Architected and developed a task automation platform designed to streamline internal business workflows across multiple departments. Tech stack included C# .NET Core MVC backend with SQL Server, RESTful APIs, and a React.js frontend (Material-UI). Set up automated CI/CD pipelines and delivered end-to-end task automation that reduced manual processing time.

Customer Service Portal Modernization at ServiceNow

October 1, 2019 - October 10, 2025

Directed a modernization initiative to revamp a legacy customer service portal with modern web technologies. Migrated backend components to updated MVC patterns, integrated SQL Server data stores, and designed RESTful APIs for internal and partner integrations. Improved cross-browser compatibility, responsive UI/UX, and streamlined data flows for higher reliability.

Senior Software Engineer at Viget

August 1, 2022 - Present

Designed scalable back-end services using C# .NET Core MVC with SQL Server integrations; optimized stored procedures to reduce latency; developed responsive front-end interfaces with JavaScript, jQuery, Bootstrap; migrated legacy apps to RESTful APIs; implemented Git-based version control with CI/CD via Azure DevOps; collaborated with cross-functional teams in Agile; improved data throughput by 25%.

Software Engineer at Oracle

July 1, 2022 - October 10, 2025

Designed enterprise features using C# MVC and SQL Server; built RESTful endpoints, optimized queries and caching to improve response times; integrated JSON payloads for client communications; contributed to CI/CD pipelines and code reviews; collaborated with product and QA in Agile sprints.

Software Engineer at ServiceNow

November 1, 2019 - October 10, 2025

Developed MVC-based modules with SQL Server backend; implemented REST APIs; front-end work with JavaScript, jQuery, HTML5, and CSS3; improved performance through query optimization and caching; mentored interns and performed code reviews; contributed to Agile practices and incident remediation.

Task Flow Automation Platform (Project) at Independent Project

December 1, 2021 - October 10, 2025

Architected and developed a task automation platform integrating C#/.NET Core MVC backend with SQL Server and a React/Material-UI front-end; designed RESTful JSON APIs, set up CI/CD pipelines, and achieved a 40% reduction in manual processing time.

Senior Software Engineer at Viget

August 1, 2022 - Present

Engineered scalable back end services using C# .NET Core MVC frameworks with SQL Server integrations, optimizing data queries and stored procedures to reduce database call latency by 25%. Developed and maintained responsive frontend interfaces leveraging JavaScript, jQuery, Bootstrap, HTML5, and CSS3 to enhance accessibility and mobile user experience across key web platforms. Led migration efforts transitioning legacy apps to modern RESTful API architectures, facilitating smoother integration with third-party services and improving maintainability. Implemented comprehensive Git-based version control workflows integrated with CI/CD pipelines using Azure DevOps, reducing deployment errors by 30% and accelerating release cadence. Collaborated closely with cross-functional product and QA teams in Agile Scrum ceremonies to gather requirements and deliver prioritized features on bi-weekly release cycles.

Software Engineer at Oracle

July 1, 2022 - October 11, 2025

Designed enterprise-grade features using C# MVC and SQL Server stored procedures, contributing to a mission-critical SaaS platform servicing thousands of users worldwide. Engineered robust REST API endpoints to enable scalable integrations, improved client data synchronization, and developed dynamic frontend interfaces with JavaScript, jQuery, and Bootstrap. Established Git version control with branch-based workflows to facilitate collaboration across multiple feature teams in a high-volume codebase. Optimized backend processes by refactoring complex LINQ queries and implementing caching, yielding a 35% improvement in service response times. Integrated JSON payload structures for REST API clients and supported CI/CD pipelines, reducing integration faults and deployment delays. Led security enhancements through data validation layers and OWASP-aligned best practices, and participated in database schema evolution using Entity Framework migrations.

Software Engineer at ServiceNow

November 1, 2019 - October 11, 2025

Developed web application modules using .NET MVC and SQL Server for enterprise workflow automation. Implemented frontend components with JavaScript, jQuery, HTML5, and CSS3 to improve usability and responsiveness. Worked with Git repositories, managing feature branches and code reviews within a distributed team. Built and consumed RESTful APIs for internal service orchestration and third-party integrations. Improved SQL Server queries through indexing and query plan analysis, supporting high-volume transactions. Collaborated with QA to design automated tests with NUnit and Selenium, and contributed to Agile ceremonies to deliver iterative improvements. Enhanced client-side validation and data integrity while mentoring interns and junior developers.