Mobile Engineer

Mark
43 is approved to hire in Canada, the UK, and 36 U.S. states, including Alabama, Arizona, California (excluding San Francisco), Colorado, Connecticut, Washington D.C., Florida, Georgia, Iowa, Idaho, Illinois, Indiana, Kansas, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, North Carolina, Nebraska, New Hampshire, New Jersey, New Mexico, New York, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, Tennessee, Texas, Utah, Virginia, Vermont, Washington, Wisconsin, and West Virginia.
Before applying to a remote role, please ensure that you are able to perform the position in one of the states listed above. State locations and specifics are subject to change as our hiring requirements shift.

Applicants must be authorized to work for any employer in the country in which the role is being hired. We are unable to sponsor or take over sponsorship of an employment visa at this time.

Mark
43's mission is to empower communities and their governments with new technologies that improve the safety and quality of life for all. We build powerful, scalable, and elegant software that sets a new standard for the tools upon which our first responders rely. Our users are diverse, and we are therefore committed to embracing diversity of thought and experience within our team.

We're seeking a Mobile Engineer to join our Engineering team. This role will play a critical part in developing both the Android and iOS versions of our public safety software using Kotlin Multiplatform (KMP) and Compose Multiplatform (CMP). You'll have the opportunity to help shape Mark
43's mobile platform strategy while gaining hands‑on experience with emerging cross‑platform technologies. This is a pivotal moment in the evolution of our mobile platform, as we lay the foundation for a shared codebase that will define how we build Android and iOS experiences going forward.

• Learn, explore, engage with mobile cross‑platform technology
• Build new features on KMP/CMP across Android and iOS
• Help the team migrate existing iOS/Android logic to KMP/CMP
• Learn both iOS and Android development fundamentals with mentorship and support from senior engineers
• Build and maintain automatic test cases for iOS and Android
• Contribute to the design and development of mobile‑first features used daily by first responders such as police officers and fire fighters
• Collaborate with product managers and designers to translate user needs and technical constraints into clean, reliable features
• Publish and maintain applications and versions in mobile app stores
• Continuously improve our mobile engineering practices to deliver performant and responsive applications

• 2+ years of professional mobile development experience
• Experience in cross‑platform mobile development, ideally with KMP (Kotlin Multiplatform) or CMP (Compose Multiplatform)
• Ideal background in either Android (Kotlin) or iOS (Swift/Swift
  
  UI) with a willingness to learn the other platform
• Experience with Java backend is a plus
• Exposure to or interest in mobile testing strategies

• A strong sense of ownership and accountability
• Willingness to learn and work across platforms (especially Android‑to‑iOS growth or vice versa)
• Collaborative mindset with a passion for supporting mission‑driven work

Mark
43 is a remote‑friendly company, and this role may be based remotely in approved states, or from one of our offices in New York, Boston, or Manchester, UK.

• Mentorship and support from experienced engineers and technical leaders
• Opportunities to grow personally and professionally through impactful projects
• A collaborative and mission‑aligned team environment
• The chance to build software that directly improves the lives and safety of first responders and their communities

We feel passionately about equal pay for equal work, and transparency in compensation is one vehicle to achieve that. Total compensation for this role is market‑competitive, including a target base annual salary range of $140,000–$180,000, plus bonus opportunity, company stock options, and a full benefits package, including health insurance, paid time off, and a 401(k) with a company match.

Mark
43 is committed to the full inclusion of all qualified individuals. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, disability, age, sexual orientation, gender identity, national origin, veteran status, or genetic information. As part of this commitment, we will ensure that persons with disabilities are provided reasonable accommodations. If reasonable accommodation is needed, please email  requesting the accommodation.