Senior Software Engineer, Mobile Apps

Biofire Technologies is on a mission to give gun owners better tools for reducing preventable gun injuries and deaths, especially among children. We believe our technology, combined with a best-in-class customer experience, will define the future of firearms safety for the next generation. Our mission-driven approach has earned support from the firearm community, the tech world, and the media.
Biofire employees encompass a diverse range of talents, including world-class engineers who have designed and tested firearms, medical devices, robots, cars, satellites, rockets, and supersonic jets; expert technicians from aerospace, defense tech, special forces, and gunsmithing; and elite operators from high-tech, advanced manufacturing, and regulated industries. Whether building the product or powering the company behind it, every Biofire team member is united by an obsession with safety, reliability, and operational excellence.

Reducing accidental firearm injuries and deaths requires original thinking and authentic collaboration, so we’re deeply invested in building a team and culture that can achieve our mission together. Team members enjoy autonomy and flexibility from day one, so expect to be immediately tasked with solving challenging problems and building new systems that work. We’ll hold you accountable for executing audacious goals, giving and receiving honest feedback, and helping your teammates succeed. You’ll receive respect, kindness, and support from every direction while you figure out how to get it all done.

As a Senior Software Engineer, Mobile Apps at Biofire, you will own implementation of end-to-end features and user flows across iOS and Android, connecting the app experience to hardware behavior with reliability and data integrity. You’ll design and document a plan for a reusable UI/design library that enables consistent, accessible, polished experiences and reusable components across Biofire mobile apps. You will partner closely with a Senior Software Engineer to maintain feature parity between the mobile app and custom AOSP hardware, using evidence-based decision-making and tight stakeholder partnership to deliver cohesive user outcomes. You’ll also be an active contributor to the team’s test culture, ensuring the application is built for testability and supports automated, full end-to-end integration testing from app to hardware.

Day-to-day responsibilities of the role will include:

• Own implementation of end-to-end app-to-hardware features and user flows across iOS and Android, using platform conventions and ensuring a cohesive, reliable experience;

• Design and document a plan to build and maintain a reusable UI/design library for Biofire mobile apps, with attention to accessibility, reusable components, polished edge states, and visual consistency;

• Partner with a Senior Software Engineer to maintain feature parity between the mobile app and custom AOSP hardware, aligning on behavior, data flows, and integration expectations;

• Actively participate in and strengthen the team’s test culture by building for testability and enabling integrations that support automated, full end-to-end testing from app to hardware;

• Collaborate with software team members to develop and execute a plan that ensures application testability and supports scalable end-to-end automation.

We understand that not all applicants will possess skills that perfectly align with our job qualifications. At Biofire, we appreciate diverse experiences from various industries, and we encourage all individuals who meet the necessary qualifications to submit their applications. While having the "desired" qualifications may strengthen a candidate's profile, we also welcome applicants with alternative experiences to apply.

• Strong track record delivering cross-platform mobile apps on iOS and Android, including support for the full product lifecycle and parity discipline;

• Experience integrating mobile applications with hardware; mobile device hardware experience is a plus;

• Platform-native mobile experience (Swift/Kotlin); experience with React Native is a plus;

• Demonstrated ability to build with design and user experience in mind, including accessibility, reusable components, and polished edge states;

• Demonstrated ability to design robust mobile architecture and data flows, including resilient state and offline behavior;

• Comfort partnering across app-to-hardware integration, including debugging end-to-end issues using logs/telemetry and collaborating effectively with embedded engineering; familiarity with interfaces/protocols like Bluetooth (BLE), USB, and UART is a plus.

• Experience with release operations and quality systems across iOS and Android, including code signing, staged rollouts, pragmatic testing, CI/CD, feature flags, and production observability.

In addition to competitive pay, as a full-time employee at Biofire you are eligible for:

• Stock Options in Biofire, 401(k), HSA - and other financial benefits

• Medical Insurance - including plan options with $0 payroll deduction

• Dental, Vision and Life Insurance Plans - with $0 payroll deduction

• 3 Weeks Vacation and Sick time (Flex Time for salary positions), and 13 Paid Holidays

• Parental Leave - and other family-building, adoption and surrogacy benefits

The compensation range for this role is $170,000 - $190,000/annual salary + stock options + benefits.

Pay offered may vary depending on multiple individualized factors, including market location, job-related knowledge, skills, and experience. The total compensation package for this position may also include other elements dependent on the position offered. Details of participation in these benefit plans will be provided if an employee receives an offer of employment.

This is a full-time, salaried role. Our dog-friendly, state-of-the-art headquarters is located in beautiful Broomfield, Colorado, between Boulder and Denver. The team regularly engages in collaborative in-person sessions at our vibrant office space, but you will be offered the flexibility to work from home as needed.
We expect you to bring your very best, and in return, we will provide the support necessary for you to excel. You'll collaborate with colleagues you appreciate, respect, and find inspiration from, and have access to all the technical resources needed.

We’re bringing innovation to a technological problem that has persisted for decades, so we depend on diverse, inclusive, and collaborative teams to break new ground and do great work. We welcome people from all qualified backgrounds, and we don’t discriminate based on race, religion, color, political affiliation, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics.

This role handles information subject to US Export Control Regulations. Applicants must be (a) a citizen of the United States; (b) a lawful permanent resident of the United States (“Green Card” holder); or (c) a person admitted into the United States as an asylee or refugee to be considered for the position.