Athirai Mahendran

SoftwareDeveloper

Thanjavur, TN, Indiaathirai-mahendran

Profile summary

Mid-Level Backend Developer nearly 3 years of experience building scalable backend systems using ASP.NET Core, Web API, C#, Entity Framework, LINQ, and SQL Server. Hands-on experience in designing RESTful services, microservices-based ERP modules, third-party integrations, and optimizing backend performance. Strong understanding of clean architecture, SOLID principles, CI/CD, and Agile workflows. Proven ability to collaborate with cross-functional teams and Experienced in remote collaboration and delivering solutions for international clients.

Career highlights

Developed Scalable ERP Backend: Built a microservice-based ERP backend from scratch using ASP.NET Core, focusing on modularity, scalability, and service communication.

Integrated ZATCA E-Invoicing: Implemented ZATCA e-invoicing (Wave 2) integration, including secure digital signing and API communication for Trees Technologies.

Key skills

Skills
C#SQLLINQJavaScriptASP.NET CoreWeb APIMVCEntity FrameworkDapperMicroservicesSQL ServerStored ProceduresSSMSGitGitHubSwaggerPostmanREST ArchitectureAgileCI/CD

Professional experience

SoftwareDeveloperJul 2025 - Present
Trees Technologies | Thanjavur,TN,India

• Developed and tested the IMS module, facilitating equipment inspection and certification workflows for Carlstahl and other clients, including customer portal enhancements and digital certificate handling using .NET MVC, Web API, and SQL. • Implemented ZATCA e-invoicing (Wave 2) integration, including secure digital signing and API communication • Optimized SQL queries, stored procedures, and backend performance for high-volume ERP workflows. • Collaborated with frontend teams and clients to define API requirements and deliver scalable backend solutions.

  • Developed and tested the IMS module, facilitating equipment inspection and certification workflows for Carlstahl and other clients, including customer portal enhancements and digital certificate handling using .NET MVC, Web API, and SQL.
  • Implemented ZATCA e-invoicing (Wave 2) integration, including secure digital signing and API communication
  • Optimized SQL queries, stored procedures, and backend performance for high-volume ERP workflows.
  • Collaborated with frontend teams and clients to define API requirements and deliver scalable backend solutions.
SoftwareDeveloperFeb 2023 - Jun 2025
DigiFrontal IT Solutions | Thanjavur,TN,India

• Developed HRMS modules (employee, shift, recruitment) using ASP.NET Core, EF, LINQ, and SQL Server. • Built microservice based ERP backend from scratch, focusing on modularity, scalability and service communication. • Integrated OAuth 2.0 authentication and implemented secure user management flows. • Developed Notification and Real-time modules using SignalR, improving user communication and event handling. • Mentored 6 trainees in backend architecture, code quality, and API development best practices.

  • Developed HRMS modules (employee, shift, recruitment) using ASP.NET Core, EF, LINQ, and SQL Server.
  • Built microservice based ERP backend from scratch, focusing on modularity, scalability and service communication.
  • Integrated OAuth 2.0 authentication and implemented secure user management flows.
  • Developed Notification and Real-time modules using SignalR, improving user communication and event handling.
  • Mentored 6 trainees in backend architecture, code quality, and API development best practices.

Education

Diploma, Java Fullstack DevelopmentOct 2022 - Present
Inmakes Infotech

• Relevant Coursework: Java, SQL, HTMS, CSS, JavaScript, Bootstrap

Bachelor's Degree, Computer ScienceMar 2022 - Present
Bon Secours College for Women -Bharathidasan University

• Relevant Coursework: Data Structures & Algorithms, DBMS, Java, C++, Computer Networks