Full Stack Software Engineer - .NET & Modern Web

HRTX; Mandaluyong; Hybrid; PHP 900,000 - 1,800,000; Full time

Job summary

HRTX is seeking a Senior Full Stack Software Engineer to build and maintain high-performance enterprise web applications. You will develop ASP.NET Core web services, design MS SQL Server structures, create React front-ends, and guide feature delivery within an Agile team.

You will design robust APIs, manage authentication with JWT/OAuth2, implement secure middleware, and collaborate across disciplines in a hybrid setup based in Mandaluyong.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related discipline.
• 5–8 years of hands-on software development experience centered on .NET Core and React ecosystems.
• Strong mastery of ASP.NET Core API development, middleware pipelines, and security frameworks.
• Demonstrated proficiency in React.js (ES6+, Hooks, Context API/Redux, responsive UI workflows).
• Solid database experience with MS SQL Server (complex T-SQL scripting, stored procedures).
• Proven background in RESTful API design, HTTP protocols, and third-party API integration.
• Familiarity with Git version control, Azure DevOps tools, and sprint-based Agile methodologies.
• Excellent English communication and problem-solving skills.

Responsibilities

• Backend Services & API Design: Architect and sustain ASP.NET Core Web APIs, managing middleware configuration, dependency injection, authentication mechanisms (JWT/OAuth2), and route versioning.
• Front-End Development: Deliver modular React UI components utilizing modern state management (Context API/Redux), responsive styling, and API integration patterns.
• Relational Database Management: Author T-SQL queries, views, and stored procedures on MS SQL Server; enforce database normalization, schema design, and query optimization.
• Feature Delivery & Architecture: Translate functional requirements into concrete API specifications, entity models, and UI component structures.
• System Integration: Connect internal enterprise tools and external SaaS REST endpoints, managing data mapping, payload transformations, and security protocols.
• Engineering Quality & Support: Perform peer code reviews, troubleshoot full-stack production incidents, refactor legacy technical debt, and maintain technical documentation.
• Agile Execution: Engage in sprint commitments, planning sessions, and CI/CD deployment routines using Azure DevOps.

Skills

ASP.NET Core API development

React.js

Context API/Redux

RESTful API design

Security frameworks

Git version control

Azure DevOps

Agile methodologies

English communication

Education

Bachelor's degree in Computer Science, Software Engineering, or related discipline

Tools

MS SQL Server

Azure DevOps

Git

Job description

Work Setup:

Hybrid (3x/week On-site in Mandaluyong) | Mid-Shift Schedule

Position Summary

We are seeking an experienced Full Stack Software Engineer to build and maintain high-performance enterprise web applications. In this role, you will develop ASP.NET Core web services, construct efficient MS SQL Server database structures, design interactive React front-ends, and lead technical feature delivery within a collaborative Agile delivery framework.

Key Responsibilities

• Backend Services & API Design: Architect and sustain ASP.NET Core Web APIs, managing middleware configuration, dependency injection, authentication mechanisms (JWT/OAuth2), and route versioning.


• Front-End Development: Deliver modular React UI components utilizing modern state management (Context API/Redux), responsive styling, and API integration patterns.


• Relational Database Management: Author T-SQL queries, views, and stored procedures on MS SQL Server; enforce database normalization, schema design, and query optimization.


• Feature Delivery & Architecture: Translate functional requirements into concrete API specifications, entity models, and UI component structures.


• System Integration: Connect internal enterprise tools and external SaaS REST endpoints, managing data mapping, payload transformations, and security protocols.


• Engineering Quality & Support: Perform peer code reviews, troubleshoot full-stack production incidents, refactor legacy technical debt, and maintain technical documentation.


• Agile Execution: Engage in sprint commitments, planning sessions, and CI/CD deployment routines using Azure DevOps.

Core Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or related discipline


• 5–8 years of hands-on software development experience centered on .NET Core and React ecosystems


• Strong mastery of ASP.NET Core API development, middleware pipelines, and security frameworks


• Demonstrated proficiency in React.js (ES6+, Hooks, Context API/Redux, responsive UI workflows)


• Solid database experience with MS SQL Server (complex T-SQL scripting, stored procedures, indexing)


• Proven background in RESTful API design, HTTP protocols, and third-party API integration


• Familiarity with Git version control, Azure DevOps tools, and sprint-based Agile methodologies


• Excellent English communication and problem-solving skills

Preferred Qualifications

• Exposure to modern .NET versions (.NET 6/7/8), minimal APIs, SignalR, or Worker Services


• Knowledge of cloud services (Azure App Service, Azure SQL, Key Vault, or Service Bus)


• Experience with database performance profiling, SSMS execution plan analysis, and query tuning


• Automated testing experience (xUnit/NUnit for backend; Jest/React Testing Library for frontend)


• Background supporting cross-functional international teams