Location: Johnstown, Colorado (On-Site Required)
Start Date: November 1, 2025
Duration: 8 months with potential for extension
Compensation: Competitive salary range of $120,000 - $150,000 annualized (pro-rated for project duration), based on experience; comprehensive benefits including health, dental, and vision insurance, vacation accrual, and IRA matching
About Longitude 103
Longitude 103 is a fast-growing technology company based in Johnstown, Colorado, specializing in custom web and mobile applications for the Water Resources industry and related sectors. We empower agricultural and environmental professionals with innovative SaaS solutions that streamline data management, mapping, and integration workflows. Join our collaborative team to make a tangible impact on sustainable water use and resource optimization.
Job Summary
We are seeking an experienced Senior Mobile Application Developer to lead the mobile technical execution of a critical integration project: “One Red integration into HydroData and ProducerConnect.” This role will focus on building robust, scalable iOS and Android applications to seamlessly connect these systems on mobile devices, enhancing field data capture, real-time synchronization, and mapping visualizations for our agricultural SaaS platform. As a project-based hire, you'll contribute to a high-impact initiative with the opportunity to transition to a permanent role if the project extends based on success and business needs.
This is an 8-month engagement starting November 1, 2025, with hands-on development in a collaborative Agile environment using tools like Jira and Git. Ideal candidates bring senior-level expertise in Swift for iOS and Kotlin for Android, with a passion for solving complex mobile integration and mapping challenges in data-heavy, geospatial domains.
Key Responsibilities
- Design and implement mobile API integrations between One Red, HydroData, and ProducerConnect, ensuring secure and seamless data synchronization across iOS and Android platforms.
- Develop and optimize native mobile UI components using Swift (iOS) and Kotlin (Android) to create intuitive interfaces for data entry, visualization, and user workflows.
- Build scalable mobile services to handle offline data processing, error handling, and performance tuning, with seamless backend connectivity.
- Integrate advanced mapping features into mobile apps, leveraging location services for geospatial data display, routing, and field annotations in water resource management scenarios.
- Collaborate with cross-functional teams (product, QA, and stakeholders) to define requirements, conduct code reviews, and deliver milestones on time.
- Write clean, maintainable code with comprehensive testing (unit, integration, and end-to-end) using frameworks like XCTest (iOS), JUnit (Android), or equivalents.
- Troubleshoot and resolve issues in production environments, leveraging mobile monitoring tools to maintain app reliability and user experience.
- Document code, APIs, and deployment processes to facilitate knowledge transfer and future scalability.
- Mentor junior developers and contribute to agile ceremonies, including sprint planning and retrospectives.
Qualifications
- Experience: 5+ years in mobile application development, with at least 3 years in senior or lead roles involving cross-platform iOS and Android projects.
- Technical Skills:
o Proficiency in Swift for iOS app development, including UIKit/SwiftUI, Core Data, and networking with URLSession.
o Strong experience with Kotlin for Android development, including Jetpack Compose, Room, and Retrofit for API interactions.
o Required experience with mapping on mobile applications, such as MapKit (iOS) and Google Maps SDK (Android), for handling geospatial queries, overlays, and location-based features.
o Familiarity with integration tools (e.g., Firebase for cross-platform sync) and deployment platforms (e.g., App Store Connect, Google Play Console).
o Knowledge of Agile/Scrum methodologies and tools like Jira, Git, and CI/CD pipelines (e.g., Fastlane, Gradle).
- Soft Skills: Excellent problem-solving abilities, strong communication for technical and non-technical audiences, and a proactive approach to project delivery.
- Nice-to-Have: Experience in the Water Resources or agricultural tech sector; familiarity with GIS/mapping libraries (e.g., ArcGIS Runtime SDK for mobile, Mapbox); prior work on forms-heavy or data-intensive mobile SaaS applications.
- Education: Bachelor’s degree in computer science, Software Engineering, or related field (or equivalent experience).
- Other: Ability to commute to Johnstown, CO; U.S. work authorization required.
Employment Terms
This is a project-based, at-will position tied to the successful completion of the “One Red integration into HydroData and ProducerConnect” project. Employment is expected to last approximately eight (8) months from the start date of November 1, 2025, but may end later based on project milestones.
Project-Based Employment Clause
Your employment with Longitude 103 is for the duration of the “One Red integration into HydroData and ProducerConnect” project, estimated to last approximately eight (8) months from your start date of November 1, 2025. This is a project-based position, and your employment may end upon the substantial completion of the project, including but not limited to key milestones such as: successful API integration of One Red with HydroData and ProducerConnect systems, completion of unit and integration testing phases, deployment to production environments, and handover of code documentation and training materials.
Notwithstanding the above, Longitude 103 reserves the right to extend the project duration or convert this position to a regular, ongoing role based on business needs, project extensions, funding availability, and your performance. Any extension or conversion will be confirmed in writing at least thirty (30) days prior to the anticipated project end date (approximately June 30, 2026).
This employment is at-will, meaning either you or Longitude 103 may terminate the employment relationship at any time, with or without cause or notice, subject to applicable Colorado law.
You agree that the project-based nature of this role does not create any expectation of continued employment beyond the project's needs.
All intellectual property developed during the engagement will be owned by Longitude 103, and a standard NDA will be required.
What We Offer
- Competitive pro-rated salary and performance-based incentives.
- Full benefits package from day one, including medical, dental, and vision insurance.
- Flexible hybrid work arrangement with modern office space in Johnstown.
- Opportunities for professional growth in a mission-driven environment focused on water sustainability.
- Collaborative culture with team-building events and access to industry conferences.
How to Apply
Interested candidates should submit a resume, cover letter highlighting relevant Swift/Kotlin experience and mobile mapping projects, and a portfolio or GitHub/App Store link (if applicable).
We are an equal opportunity employer and value diversity in our team. Applications will be reviewed on a rolling basis, with interviews starting immediately. Only shortlisted candidates will be contacted.
Longitude 103 – Innovating for a Sustainable Future.
Job Type: Full-time
Pay: $120,000.00 - $150,000.00 per year
Benefits:
- Dental insurance
- Flexible schedule
- Health insurance
- Health savings account
- Professional development assistance
- Retirement plan
- Vision insurance
Education:
Experience:
- Application development: 5 years (Required)
Language:
Work Location: In person
