Startte, LLC is looking for a Mobile Application Developer to lead development of its iOS and Android applications. The role is fully remote, full-time, and W-2, and it starts immediately. It suits an experienced developer who enjoys cross-platform work and wants to own the hard parts of mobile delivery, including offline data, synchronisation, accessibility, and production support. As Mobile Application Developer, you’ll design, build, and maintain cross-platform iOS and Android apps in .NET MAUI; own offline-first data storage and synchronisation with SQLite, including conflict resolution and keeping syncs under 60 seconds; integrate the apps with a .NET microservices and API gateway back end hosted on Microsoft Azure; write unit and automated UI tests and take part in sprint regression and performance testing; build accessible interfaces that meet Section 508 and WCAG 2.x AA; package and distribute builds for testing and production; update architecture, user, and security documentation; and provide Tier 3 production support, including an on-call rotation for severity 1 incidents. The role requires five or more years of professional mobile or .NET development, and the ability to obtain and maintain a Public Trust background investigation.
About Startte — Remote Mobile Engineering in the USA
Company: Startte, LLC
Location: Remote, United States
Employment: Full-time, W-2, immediate start
Platforms: iOS and Android applications built in .NET MAUI
Back End: .NET microservices and an API gateway hosted on Microsoft Azure
Mobile Application Developer Role — Cross-Platform Apps, Sync & Accessibility
Department: Mobile Engineering
Primary Focus: .NET MAUI apps, offline-first sync, Azure integration, accessibility
Scope: iOS and Android applications from development through production support
Mission: Delivering reliable, accessible mobile apps that work offline and stay in sync
Mobile Application Developer Position Overview
The Mobile Application Developer role is about making one codebase deliver a dependable experience on both iPhone and Android. Startte builds its applications in .NET MAUI, and you’ll lead that work, designing screens, writing the application logic, and keeping the apps maintainable as they grow. Offline behaviour is one of the most demanding parts of the job. Users need to keep working without a connection, and the data they create has to reach the back end cleanly when it returns. You’ll own that storage and synchronisation layer in SQLite, handling conflict resolution when the same record has changed in two places, and holding synchronisation to a target of under 60 seconds. Connecting to the back end is equally important. The apps talk to a .NET microservices architecture behind an API gateway hosted on Microsoft Azure, so you’ll integrate carefully with those services and keep the contract between mobile and server stable. Quality is built in, not added later. You’ll write unit tests and automated UI tests, take part in regression and performance testing in every sprint, and support user acceptance testing before each release. Accessibility is a requirement, and you’ll build interfaces that meet Section 508 and WCAG 2.x AA standards. Delivery means packaging builds for testing and production, and keeping architecture notes, user guides, and security documentation current as features change. Production support is part of the work too. You’ll provide Tier 3 support and join an on-call rotation for severity 1 incidents, so you’ll need to diagnose problems under pressure and fix them properly.
As Mobile Application Developer, you’ll deepen your expertise in cross-platform mobile architecture, offline-first design, and secure, accessible app delivery. The ideal candidate holds a bachelor’s degree in computer science or a related field, or an associate’s degree plus two additional years of relevant experience, and has at least five years of professional mobile or .NET development. Hands-on experience shipping production iOS and Android apps with .NET MAUI or Xamarin.Forms is required, along with offline storage and synchronisation experience using SQLite or a similar local database. Strong C# skills and experience consuming REST APIs are essential. Agile or Scrum practice with Jira or Azure DevOps, Git, and CI/CD pipelines is expected. The ability to obtain and maintain a Public Trust background investigation is required. Preferred experience includes work on federal systems, mobile authentication using OIDC or OAuth2 or federal single sign-on, mapping and GIS integration such as Esri ArcGIS, mobile device management or enterprise app distribution, and Section 508 mobile accessibility testing. For mobile developers across the United States who want a senior, remote role with real ownership, this position offers meaningful and technically demanding work.
Why This Role Matters: As Mobile Application Developer at Startte, you build the iOS and Android apps that people rely on in the field, own the offline sync that keeps data safe, connect the apps to a secure Azure back end, make your work accessible to everyone who needs it, support production systems when incidents happen, and advance a senior career in cross-platform mobile development from anywhere in the United States.
Key Responsibilities & Development Duties
Cross-Platform App Development
- Design and build iOS and Android apps in .NET MAUI
- Maintain existing cross-platform applications
- Structure code for long-term maintainability
- Build screens and application logic for both platforms
- Keep the two platforms consistent in behaviour
- Lead mobile development decisions for the team
Offline Storage & Synchronisation
- Own offline-first data storage using SQLite
- Design synchronisation between devices and the back end
- Handle conflict resolution when records change in two places
- Keep synchronisation under 60 seconds
- Protect data integrity during connection changes
- Test sync behaviour under poor and intermittent connectivity
Back-End Integration
- Integrate the apps with a .NET microservices architecture
- Connect to services through an API gateway
- Work with systems hosted on Microsoft Azure
- Consume REST APIs reliably and securely
- Support mobile authentication and secure data exchange
- Keep the mobile-server contract stable
Testing, Quality & Performance
- Write unit tests for application code
- Build and maintain automated UI tests
- Take part in regression testing each sprint
- Take part in performance testing each sprint
- Support user acceptance testing
- Resolve defects found during testing
Accessibility & Compliance
- Build interfaces that meet Section 508 requirements
- Meet WCAG 2.x AA accessibility standards
- Test mobile accessibility as part of delivery
- Follow security practice across the application
- Maintain security documentation as features change
- Follow federal and organisational compliance requirements
Release, Documentation & Support
- Package and distribute builds for testing and production
- Support user acceptance testing and release sign-off
- Update architecture documents and user guides
- Provide Tier 3 production support
- Join an on-call rotation for severity 1 incidents
- Diagnose and resolve production issues under pressure
Qualifications & Requirements
Education
- Bachelor’s degree in computer science or a related field
- Or an associate’s degree plus 2 more years of relevant experience
Experience
- 5+ years of professional mobile or .NET development
- Hands-on .NET MAUI or Xamarin.Forms experience shipping production iOS and Android apps
- Offline data storage and synchronisation with SQLite or a similar database
- Experience consuming REST APIs
Technical Skills
- Strong C# programming
- Agile or Scrum practice with Jira or Azure DevOps
- Git version control
- CI/CD pipeline experience
Clearance
- Ability to obtain and maintain a Public Trust background investigation
Preferred Experience
- Work on federal systems
- Mobile authentication using OIDC, OAuth2, or federal single sign-on
- Mapping and GIS integration, especially Esri ArcGIS
- Mobile device management (MDM) or enterprise app distribution
- Section 508 mobile accessibility testing
Career Development & Growth Opportunities
Professional Advancement
- Pathway toward Senior Mobile Engineer or Mobile Architecture lead roles
- Opportunity to shape mobile architecture and standards
- Growth into federal and enterprise mobile solutions
- Ownership of a production mobile platform
Learning & Development
- Hands-on work with .NET MAUI and cross-platform delivery
- Experience in offline-first design and synchronisation
- Practice in accessibility and Section 508 compliance
- Exposure to Azure-hosted microservices and API gateways
Work Arrangement
- Fully remote role within the United States
- Full-time, W-2 employment
- Immediate start available
About Startte — Mobile Software for Federal and Enterprise Needs
Startte, LLC develops iOS and Android applications built in .NET MAUI, connected to a .NET microservices back end on Microsoft Azure. The company’s work includes federal systems, where accessibility, security, and reliable offline operation matter as much as features. Its engineering team works in agile sprints and values documentation, testing, and dependable production support.
Career Excellence in Mobile Engineering: Join a remote mobile engineering team in the United States, build cross-platform apps in .NET MAUI, own offline sync with SQLite, integrate with Azure microservices, and grow a senior career in mobile development.
Who Should Apply?
- .NET Developers: Moving into cross-platform mobile work
- Xamarin and MAUI Engineers: With production app experience
- iOS and Android Developers: Interested in .NET MAUI
- Offline Sync Specialists: With SQLite experience
- Government and Federal Software Engineers: With a Public Trust clearance path
- Accessibility-Focused Developers: Experienced in Section 508 and WCAG
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