Developer, Mobile App

Hyphen Solutions; Town of Texas (WI); On-site; USD 90,000 - 120,000; Full time

Job summary

Hyphen Solutions is seeking a skilled developer specializing in mobile applications. The candidate will design, develop, and test new features across web and mobile applications while utilizing technologies such as C#, ASP.NET MVC, Flutter, Web API, SQL Server, and AWS services.

You will collaborate with various teams to enhance existing applications and provide effective solutions. A minimum of 3 years' experience in mobile development and extensive knowledge of AWS services is essential.

Qualifications

• 3+ years of professional mobile development experience with Flutter and Dart.
• Proven experience building and deploying serverless applications on AWS.
• Experience developing applications using C#, ASP.NET, MVC, and SQL Server.

Responsibilities

• Design, develop, and maintain cross-platform mobile applications.
• Build serverless backend services using AWS technologies.
• Collaborate with product owner to implement UI/UX designs.

Skills

Flutter and Dart expertise

AWS services knowledge

C# and ASP.NET experience

RESTful API integration

Agile collaboration

Education

Bachelor’s or Associate degree in Computer Science or related field

Tools

AWS Lambda

SQL Server

Git

Job description

General Description

Designs, develops, and tests new features and enhancements across web and mobile applications, contributing to technical design decisions and architecture. Utilizes technologies such as C#, ASP.NET MVC, Flutter, Web API, SQL Server, and AWS services to deliver scalable, high-quality solutions.

Collaborates with QA, Product Management, and Customer Care teams to support and enhance existing applications, troubleshoot issues, and implement effective solutions. Plays an active role in API development and integration, with a strong emphasis on leveraging AWS-based services and architectures.

Essential Duties And Responsibilities

• Design, develop, and maintain cross-platform mobile applications using Flutter and Dart.
• Build and integrate serverless backend services using services like AWS Lambda, API Gateway, and S3.
• Collaborate with product owner to translate UI/UX designs into responsive, pixel-accurate interfaces.
• Consume and integrate RESTful APIs and handle offline-first and caching scenarios.
• Implement authentication and authorization flows (e.g., OAuth/OIDC).
• Write clean, testable, well-documented code and participate in code reviews.
• Optimize application performance, responsiveness, and memory usage across devices.
• Manage app store releases and CI/CD pipelines for mobile builds.
• Troubleshoot, debug, and resolve production issues across the mobile and serverless stack.
• Stay current with Flutter, Dart, and AWS best practices and bring improvements to the team.

Qualifications

To perform this job successfully, an individual must be able to satisfactorily perform each of the essential duties described above. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

• Bachelor’s or Associate degree in Computer Science, Information Systems, or related field (or equivalent work experience).
• 3+ years of professional mobile development experience, with hands‑on Flutter and Dart expertise.
• Proven experience building and deploying serverless applications on AWS, especially Lambda.
• Working knowledge of AWS services such as API Gateway, DynamoDB, S3, IAM, and CloudWatch.
• Strong understanding of state management patterns in Flutter (e.g., Provider, Riverpod, Bloc).
• Experience integrating REST APIs and handling asynchronous data flows.
• Experience developing applications using C#, ASP.NET, MVC, and SQL Server.
• Familiarity with mobile CI/CD, app store submission, and release management.
• Solid grasp of software engineering fundamentals, testing, and version control (Git).
• Strong communication skills and the ability to work in a collaborative, agile environment.
• Demonstrated use of AI-assisted development tools (such as GitHub Copilot, Claude Code, or Codex) to improve productivity and code quality.
• Native iOS/Android experience, infrastructure-as-code (CDK, CloudFormation, or Terraform), and exposure to push notifications and analytics tooling.
• Industry knowledge of residential construction, homebuilding, or construction management software is a plus.