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Mobile Application Developer

AttainxWashington, DCApril 12th, 2026
Job Title: Sr. Developer (Mobile Applications) Location: Local Remote (DC/Maryland/Virginia - Must be willing to go on-site for meetings as required) Citizenship: US Citizenship Required Salary Range: $90,000.00 - $100,000.00 AttainX, Inc. is seeking a highly skilled and experienced Senior Mobile Applications Developer to join our team. The successful candidate will be responsible for designing and maintaining complex web applications that meet the needs of our clients and stakeholders. The Senior Web Applications Developer will play a key role in driving innovation and ensuring the scalability, reliability, and security of web-based solutions. Qualifications and Education Requirements: Bachelor’s degree in computer science, Information Technology, or equivalent work experience. A minimum of 5 to 10 years of professional experience in software development mobile applications. At least 3 years of specific, hands on-experience in designing, developing, and deploying complex software solutions as well as a track record of successfully leading or contributing to significant projects and delivering high quality software solutions. Problem solving skills, leadership abilities, and thorough understanding of a software architecture, design patterns, and scalability considerations. FEMA working experience highly preferred. U.S. Citizen able to obtain a public trust clearance. Technical Expertise Proficiency in designing, developing, and releasing iOS and Android native mobile applications and Windows applications that complement the web-based application. Experience developing native mobile applications enabling data collection in an offline environment through local caching and automatic upload upon reconnection. Familiarity with map utilities on native mobile applications and Windows Applications, including rendering KML files and displaying 10-point monitoring and other geoshapes derived from DHS-produced guidance. Ability to incorporate features such as taking pictures with a mobile device, uploading images via a mobile application, and rendering them as floor plans on a mobile mapping utility to facilitate indoor and/or underground data collection. Excellent communication, problem-solving and troubleshooting skills. Proficiency in developing push notifications on mobile platforms. Familiarity with cloud platforms such as AWS, Azure, or Google Cloud Platform. Experience in developing, maintaining, and versioning system integrations to facilitate data transfer among various applications. Job Duties: Designing, developing, and releasing mobile applications that compliment iOS and Android Windows Applications . Collaborate with stakeholders to gather and analyze requirements and design innovative web-based solutions. Develop high-quality, scalable, and maintainable mobile applications using best practices and industry standards. Write clean, efficient, and well-documented code. Ensure the performance, reliability, and security of web applications through rigorous testing and optimization. Non-Essential Functions: General Duty Requirements Job Type: Full-time Pay: $90,000.00 - $100,000.00 per year Benefits: 401(k) 401(k) matching Dental insurance Health insurance Life insurance Paid time off Vision insurance Schedule: 8 hour shift Day shift Monday to Friday Application Question(s): Are you a US Citizen? Do you reside in the general DMV area? Are you willing to go on-site in Washington, DC as needed, for meetings? Experience: Mobile Application Development: 5 years (Required) Xamarin: 3 years (Required) MS Azure: 2 years (Preferred) Ability to Relocate: Washington, DC 20024: Relocate before starting work (Required) Work Location: Hybrid remote in Washington, DC 20024