Backend Engineer III - Growth

ABOUT onX We’re a team of builders, adventurers, and risk takers using technology to help people confidently explore the outdoors. Driven by our mission to awaken the adventurer inside everyone, we build products that optimize every outdoor experience and inspire confidence to get out and go further. We’re a high-growth tech company. The pace is fast, the work takes grit, and ambiguity is part of the job. As the world changes around us, we adapt - continuously evolving how we build, prioritize, and deliver. Our business moves quickly, and there’s real opportunity to shape what we build next. Each of our verticals - Hunt, Offroad, Backcountry, and Fish - is at a different stage of maturity, which means the challenges you encounter and the impact you have will vary depending on where you sit and what the business needs most. We operate with an experimentation mindset, continually iterating and improving how we solve problems. We expect our people to use the latest tooling, including AI, thoughtfully and responsibly, pairing human judgment with technology to increase quality, speed, and impact. Our impact comes to life through the products we build, in the stories of our customers, and in our growing commitment to land stewardship and recreational access. ABOUT THIS OPPORTUNITY onX is seeking a Backend Engineer with a passion for building reliable, well-tested backend services that solve user problems.

Your focus will be on the shared platform infrastructure behind content experimentation, event tracking, and app-start fidelity. You will be a part of our Growth Infrastructure team, a horizontal platform team that supports Growth engineering across all of onX's verticals (Hunt, Offroad, Backcountry, Fish). This is a great opportunity to be a part of a dynamic, growing company focused on making an impact on the business, and to build infrastructure that other Growth teams rely on directly. This role will serve as a core backend contributor at onX and will report to the Growth Infrastructure Engineering Manager. WHAT YOU'LL DO Essential Job Duties & Functions - Build and maintain scalable services supporting Growth Infrastructure initiatives, including content experimentation and event tracking - Write unit, integration, and acceptance tests - Participate in architectural discussions and contribute design proposals for our services - Collaborate effectively with other engineers, PMs, and cross-functional stakeholders (mobile, BI, marketing) - Leverage and extend existing onX services rather than reinventing them - Proactively identify and use AI workflows that increase velocity while not degrading quality. - Participate in an on-call rotation to support backend services after work hours WHAT YOU’LL BRING - Bachelor's degree in computer science, computer engineering, or equivalent experience - 5+ years of professional software development experience, primarily in API development, is required - A shared passion for and ability to demonstrate onX's Company Values - Permanent US work authorization is a condition of employment with onX - Ability to travel quarterly for multiple days to a corporate office or other onX strategic location, such as a Basecamp ADDED BONUSES Though not required, we would be thrilled to consider candidates with any of the following: - Experience with Go or similar backend languages - Familiarity with Docker, Kubernetes, and infrastructure-as-code technologies such as Terraform - Familiarity with a major cloud platform (Google Cloud Platform preferred) - Exposure to A/B testing or experimentation platforms (e. g. , Eppo) THE ONX EXPERIENCE onX is a distributed company with more than 400 employees across the country. We come together regularly to work in person and stay connected through regional basecamps and a culture that balances individual ownership with deep collaboration. While we move quickly, we’re not a scrappy start-up.