Backend Engineer III

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., * 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

• 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, * 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)

onX is committed to compensating all employees fairly and equitably for their contributions. For this position, applicants can expect to make between $130,000 to $153,000 upon hire. The pay range will vary based on experience, skills, certifications, and education among other factors as required in the job description. In addition, full-time onX employees are eligible for a grant of common share options with a vesting schedule and a potential annual bonus of 10% based on company performance., * Competitive salaries, annual bonuses, equity, and opportunities for growth

• Comprehensive health benefits, including a no-monthly-cost medical plan
• Paid parental leave of 13 weeks for birthing parents and 5 weeks for non-birthing parents
• 401k matching at 100% for the first 3% you save and 50% from 3-5%
• Company-wide outdoor adventures and amazing outdoor industry perks
• Annual “Get Out, Get Active” funds to fuel your active lifestyle
• Flexible time away package that includes PTO, STO, VTO, and paid holidays

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., 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. We operate with clear goals, structure, and frameworks that guide how we prioritize and execute. Priorities matter. While they may shift, data shapes how we evolve as our business, products, and the world around us change.

Clear priorities and structure don’t limit ownership - they make it possible. You’ll have the autonomy to define your work and make meaningful decisions within clear strategic boundaries. You’ll partner closely with others to solve complex problems and build solutions that scale across teams and platforms. Along the way, you’ll be supported with feedback, tools, and opportunities to grow your craft as you take on new challenges., At onX, we believe that unique perspectives make us stronger. By bringing together people with different experiences, ideas, and viewpoints, we fuel innovation and move closer to our mission of awakening the adventurer in everyone. We are proud to be an equal opportunity employer and are committed to fairness not only in hiring, but also in development, compensation, and promotion. Our goal is to build an inclusive community where every team member can show up authentically and thrive. Together, we win as one team. Come join us!