Senior Software Engineer - Map Viewer

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 seeking a Senior Software Engineer who will contribute to meaningful, real‑world outcomes that have a lasting impact for customers and the business. In this role you’ll focus on onX’s Core Viewer cross‑platform map‑rendering engine as part of the Map Viewer team, supporting map rendering for all onX verticals. You’ll take ownership of your work, collaborate closely with partners across the organization, and help move initiatives forward in an environment where priorities evolve, learning is celebrated, and you’re encouraged to keep stretching your skills.

This role will report to the team’s Engineering Manager.

• Write C++, Swift, and Kotlin using OpenGL and Metal
• Help develop a 3D map‑viewing SDK for mobile and web.
• Build reliability and performance tracking tools to monitor the map engine in production.
• Serve as a map API subject expert for vertical application developers.
• Optimize the rendering, culling, and spatial positioning algorithms that drive the map’s visual presentation.
• Set up dependency/artifact/build pipeline to create consumable dependencies for iOS, Android, and web (Cocoa Pods, Android Libraries).
• Integrate automated testing and performance measurement into the Core Viewer CI pipeline for all platforms.
• Look for opportunities to embed AI as a repeatable co‑pilot in daily workflows, integrating experimentation into real work and refining its use with sound judgment and validation.

• Minimum of five (5) years of experience shipping and maintaining production code.
• At least one (1) year of experience focused on 3D map rendering (WebGL, OpenGL, Vulkan, Metal, and/or Direct
  
  X) and at least three (3) years of experience with mobile development.
• Fundamentals of graphics programming, including the graphics pipeline.
• Experience with culling, clipping, and spatial partitioning algorithms. Quad‑ or oct‑trees is a plus.
• Concurrency and multithreading for network requests and computation.
• Experience with protocol buffers.
• Experience with analytics data, Big Query or a similar big‑data query language.
• Knowledge of scene graphs.
• A strong computer science foundation.
• Brings a humble approach and communicates with clarity across written and verbal formats.
• A strong curiosity for exploring new technologies, including AI.
• A shared passion for and ability to demonstrate onX’s Company Values.
• Permanent U.S. work authorization is a condition of employment with onX.

• Deep understanding of data structures to support spatial querying.
• Experience with a multi‑platform C++ codebase.
• An avid user of any of the onX apps.

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…