Open to opportunities

Ayeshan Wimalasena

@ayeshanwimalasena

Message

Experienced .NET/Azure software engineer building scalable cloud-native APIs.

Sri Lanka

Message

What I'm looking for

I seek backend/cloud roles where I can build scalable .NET/Azure systems, own end-to-end delivery, mentor teams, and work in collaborative Agile environments with strong CI/CD and observability practices.

I am a Software Engineer with 5+ years designing, building, and operating enterprise and SaaS applications on the Microsoft stack, focused on secure, scalable RESTful APIs using C# and ASP.NET Core.

I specialize in cloud-native solutions on Microsoft Azure, including Azure Functions, Service Bus, App Service, Azure SQL/Cosmos DB, and CI/CD in Azure DevOps. I take end-to-end ownership from design through production operations.

My achievements include architecting an Excel import/export engine with Azure Functions, engineering a high-throughput bulk document upload handling 300+ simultaneous files, and leading DocuSign server-to-server OAuth 2.0 JWT integrations with secure secret management in Azure Key Vault.

I modernize legacy systems, extract domain modules into independent repositories with dedicated CI/CD, and improve observability and incident response using Application Insights—delivering maintainable, testable, and scalable solutions in cross-functional Agile teams.

Experience

Work history, roles, and key accomplishments

Current

Associate Technical Lead

Current

Gapstars

Aug 2024 - Present (1 year 7 months)

Led .NET/Azure backend and Blazor front-end delivery for a Netherlands-based SaaS, building production-ready RESTful APIs, event-driven processing, and secure third-party integrations to improve scalability and operational reliability.

C .NET ASP.NET Core Azure Functions Azure Service Bus Azure SQL CI CD

Associate Technical Lead

Geveo Australasia

Jan 2024 - Aug 2024 (7 months)

Led full-stack delivery and technical upgrades across client projects, optimizing performance (transaction view from ~30s to ~2s), redesigning async processing with Service Bus, and owning CI/CD pipelines to improve deployment reliability.

C ASP.NET Core Azure Service Bus Azure DevOps SQL Server Performance Optimization CI CD

Senior Software Engineer

Geveo Australasia

Sep 2022 - Dec 2023 (1 year 3 months)

Delivered RESTful APIs and integrations for high-traffic applications, modernized legacy .NET platforms to .NET 6, and implemented reliable third-party integrations and background workflows to improve scalability and maintainability.

C .NET ASP.NET Core Azure Functions Azure Storage Vue React

Software Engineer

Geveo Australasia

Aug 2020 - Aug 2022 (2 years)

Developed backend services and full-stack features for insurance, HR, and leasing clients, contributing to API design, data optimization, and end-to-end delivery in an Agile remote team.

C ASP.NET Core SQL Server Azure Functions JavaScript Vue

Education

Degrees, certifications, and relevant coursework

University of Peradeniya

Bachelor of Science in Engineering, Computer Engineering

2015 - 2020

Grade: Second Class Honours (Upper Division); GPA: 3.5/4

Completed a Bachelor of Science in Engineering (Computer Engineering) with Second Class Honours (Upper Division), focusing on computer engineering principles and software systems.