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I’m a Software Engineer with 8+ years of experience designing and developing web and backend applications using .NET, C#, SQL Server, and Angular. I’ve led projects that modernized legacy systems, built scalable APIs, and improved system performance. I’ve worked across industries including fintech and e-commerce, collaborating closely with clients to deliver reliable, high-quality solutions. What sets me apart is my ability to understand business needs and turn them into clean, maintainable code—always focused on performance, scalability, and user experience.…I’m a Software Engineer with 8+ years of experience designing and developing web and backend applications using .NET, C#, SQL Server, and Angular. I’ve led projects that modernized legacy systems, built scalable APIs, and improved system performance. I’ve worked across industries including fintech and e-commerce, collaborating closely with clients to deliver reliable, high-quality solutions. What sets me apart is my ability to understand business needs and turn them into clean, maintainable code—always focused on performance, scalability, and user experience.

Melissa Rosales

Web Developer, Full Stack Developer, Back-End Developer, +2

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I’m a Software Engineer with 8+ years of experience designing and developing web and backend applications using .NET, C#, SQL Server, and Angular. I’ve led projects that modernized legacy systems, built scalable APIs, and improved system performance. I’ve worked across industries including fintech and e-commerce, collaborating closely with clients to deliver reliable, high-quality solutions. What sets me apart is my ability to understand business needs and turn them into clean, maintainable code—always focused on performance, scalability, and user experience.…I’m a Software Engineer with 8+ years of experience designing and developing web and backend applications using .NET, C#, SQL Server, and Angular. I’ve led projects that modernized legacy systems, built scalable APIs, and improved system performance. I’ve worked across industries including fintech and e-commerce, collaborating closely with clients to deliver reliable, high-quality solutions. What sets me apart is my ability to understand business needs and turn them into clean, maintainable code—always focused on performance, scalability, and user experience.

Available to hire

I’m a Software Engineer with 8+ years of experience designing and developing web and backend applications using .NET, C#, SQL Server, and Angular. I’ve led projects that modernized legacy systems, built scalable APIs, and improved system performance. I’ve worked across industries including fintech and e-commerce, collaborating closely with clients to deliver reliable, high-quality solutions. What sets me apart is my ability to understand business needs and turn them into clean, maintainable code—always focused on performance, scalability, and user experience.

Skills

Experience Level

.NET

Expert

JavaScript

Expert

TypeScript

Expert

Language

English

Advanced

Work Experience

Technical Lead at Factor KS Software

June 1, 2023 - Present

Reviewed code to ensure quality and maintainability. Led teams through application integration and development processes. Built and maintained CI/CD pipelines using Azure DevOps. Deployed and managed web applications efficiently. Monitored and troubleshot production environments to ensure stability. Enhanced SQL Server, .NET, and Angular apps with new features. Delivered full-stack upgrades for credit payment systems and handling dollar-based customers. Extended chat bot APIs to improve functionality and user interactions. Engineered ETL and reporting workflows for regulatory compliance using C#, .NET, and SSIS. Maintained .NET API services and go-live processes. Estimated project timelines based on requirements. Enhanced desktop applications with new features in VB and C#. Built new database features in SQL Server.

Software Engineer at 3 Pillar Global

March 1, 2023 - October 16, 2025

Software Engineer. Supported performance testing for BE CU.org and led the team through testing processes. Analyzed results and produced reports for pre-production environments. Developed a desktop app to summarize performance test results. Managed priorities and adapted to unexpected changes.

Software Engineer at Freelancer / Personal Project

November 1, 2020 - October 16, 2025

AI Chatbot for E-commerce. Built AI-powered chatbot using Freshworks, n8n, WhatsApp, Facebook, and web chat. Integrated Pinecone for vector search and connected to Google Drive documents. Leveraged ChatGPT for intelligent, context-aware responses.

Software Engineer at Independent Freelance

June 1, 2023 - October 16, 2025

Built RESTful APIs in C# with SQL database integration. Worked on mobile and web applications, handling requirement analysis and client collaboration through go-live. Developed custom APIs and payment plugins for NopCommerce (credit requests, card payments). Created NopCommerce plugins for packaging tracking and blacklist management. Contributed to front-end development using Angular, TypeScript, and Ionic/Cordova.

Software Engineer at Freelance / Personal Project

June 1, 2025 - October 16, 2025

AI chatbot for E-commerce – May 2023 to June 2023: Added new features to Angular apps and improved functionality for Agro industry web application.