Principal Specialist, Software Development; Onsite

Company Overview

At RTX, the world largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Pratt & Whitney is a world leader in the design, manufacture and service of aircraft engines and auxiliary power systems and has been revolutionizing modern flight for over 100 years. Join us and help shape the future of aerospace and defense.

This role is responsible for performing technical and functional software specification, design, coding, testing, and documentation in support of our engine overhaul and repair operations. You will work within an Agile team to develop and maintain a mission‑critical application that directly supports engine maintenance operations.

• Design, develop, test, and maintain full‑stack features using C# / .NET 10 and Blazor Server with Mud Blazor component library.
• Build and optimize RESTful API endpoints following Clean Architecture patterns (Domain, Application, Infrastructure, Web/API layers).
• Write and maintain Oracle database schemas, stored procedures, migrations, and performance‑tuned queries using Entity Framework Core and Dapper.
• Implement real‑time features using Signal
  
  R for live dashboard updates and cross‑user notifications.
• Develop and maintain a data synchronization engine that integrates legacy Oracle data sources using configurable field mappings and transform rules.
• Build AI‑powered features leveraging Anthropic Claude API for intelligent search, field mapping suggestions, and engineering request draft generation.
• Implement role‑based access control (RBAC) with JWT authentication, privilege‑based page access, and multi‑site scoping.
• Generate PDF and Excel reports using Closed
  
  XML for shop floor documentation and management reporting.
• Collaborate with MRO operations stakeholders, shop floor supervisors, and engineering teams to translate business requirements into technical solutions.
• Participate in code reviews, standards enforcement, and continuous improvement of development practices.
• Support database normalization and data integrity initiatives across 100+ Oracle tables.
• Write unit and integration tests using xUnit and Moq.

• Bachelor’s degree in Computer Science, Software Engineering, Information Technology, or related STEM field and 5 years of professional software development experience; OR an Advanced degree and 3 years of experience; OR 9 years of relevant professional experience in lieu of a degree with a High School Diploma.
• Proficiency in C# and the .NET ecosystem (ASP.NET Core, Entity Framework Core).
• Experience with relational database development — writing complex SQL, schema design, stored procedures, and query optimization (Oracle preferred, SQL Server acceptable).
• Demonstrated experience building web applications with modern component‑based frameworks (Blazor, React, Angular, or Vue.js).
• Experience with RESTful API design and implementation.
• Familiarity with version control (Git) and Agile development methodologies (Scrum, Kanban).
• Strong problem‑solving skills with the ability to debug complex full‑stack issues across browser, server, and database layers.

• Experience with Blazor Server or Blazor Web Assembly — this is our primary frontend technology.
• Hands‑on experience with Oracle Database, PL/SQL, Oracle‑specific EF Core provider, and Oracle migration scripting.
• Experience with Mud Blazor or similar Blazor component libraries.
• Experience with Signal
  
  R or Web Socket‑based real‑time communication.
• Familiarity with JWT authentication and claims‑based authorization patterns.
• Experience with data migration or ETL pipelines — particularly integrating legacy systems with modern platforms.
• Exposure to AI/ML integration in enterprise applications (prompt engineering, API integration with LLMs such as Claude or GPT).
• Experience generating…