Windows Mobile Application Developer

Qualis1 Inc.; Everett (WA); On-site; USD 75,768 - 82,656; Full time

Job summary

A leading technology staffing firm seeks an experienced Windows Mobile Application Developer to design and support applications on the Windows platform. The ideal candidate will have over 5 years of experience in mobile application development, strong programming skills in C# and .NET, and proficiency in integrating with external APIs. This position requires a solid understanding of the software development lifecycle and the ability to collaborate closely with engineering teams. Competitive pay of $55-$60 per hour is offered.

Qualifications

• 5+ years of experience in Windows mobile application development.
• Experience with REST APIs and external integrations.
• Strong debugging and performance-tuning experience.

Responsibilities

• Design and maintain applications for Windows-based mobile devices.
• Integrate with external APIs and backend services.
• Perform unit testing and validation for application reliability.

Skills

C#

.NET

UWP

REST APIs

Web services

Debugging

Testing

Performance tuning

Tools

Windows SDK

XAML

Job description

This range is provided by Qualis1 Inc.. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$55.00/hr - $60.00/hr

Direct message the job poster from Qualis1 Inc.

Oracle Certified GenAI Professional | Staffing Specialist | Recruitment Operations | Crafting Seamless Talent Solutions for Growing Organizations

US Citizens & Green Card Holders Only

Duration: 6 Months

Job Overview

We are seeking an experienced Windows Mobile Application Developer to design, build, and support advanced applications on the Windows platform. This role requires strong hands‑on development skills, the ability to work with external APIs, and a solid understanding of the full software development lifecycle.

Key Responsibilities

• Design, build, and maintain advanced applications for Windows-based mobile devices.
• Integrate with external APIs, data sources, and backend services.
• Perform unit testing, debugging, and validation to ensure robust, reliable applications.
• Analyze user requirements and translate them into technical specifications.
• Prioritize, assign, and execute tasks throughout the full SDLC.
• Develop well-structured, efficient, and clean code.
• Review, debug, and improve code written by team members.
• Contribute to database architecture design and optimization.
• Ensure performance, quality, and responsiveness of applications.

Required Skills

• 5+ years of experience in Windows mobile application development.
• Strong programming expertise in C#, .NET, UWP, or Windows SDKs.
• Experience working with REST APIs, web services, and external integrations.
• Solid understanding of software design patterns, object-oriented programming, and SDLC.
• Strong debugging, testing, and performance-tuning experience.
• Ability to work onsite and collaborate closely with engineering teams.

Preferred Skills

• Experience with XAML, MVVM frameworks, or cross-platform tools.
• Knowledge of database design (SQL/NoSQL).
• Prior experience building enterprise-grade Windows applications.

Location

Everett, WA

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