Senior Software Engineer - Map Viewer

Responsibilities

• Essential Job Duties & Functions
• CI/CD & SDK Delivery Pipeline [Primary]
• Build and maintain the build, test, and release pipeline for a multi-platform C++ SDK (iOS, Android, Web/WASM). Artifact versioning, dSYM packaging and upload, caching correctness for shader and asset changes, automated release gating. Own this permanently - not just when it breaks.
• Crash Diagnostics & Observability [Primary]
• Analytics & Runtime Instrumentation [Primary]
• Define and instrument the metrics that matter: tile load times, frame rates, memory footprint, GPS acquisition, render error rates. Build the pipeline to surface those signals - across iOS, Android, and web - into engineering dashboards and product analytics hooks.
• Test Infrastructure & Developer Tooling [Primary]
• Multi-map integration tests, platform sample app test suites, visual regression tooling, DebugUI instrumentation, MapLayerInspector, compare mode tooling. Build the harness and internal tools that let the rendering engineers move faster and ship with more confidence.
• Rendering Bug Fixes & Correctness [Secondary]
• Feature Development [Secondary]
• Performance Investigations [Secondary]
• Problems that sit at the intersection of the platform and rendering layers - symbol texture memory, threading behavior, GPU resource management. Where your production engineering instincts and graphics knowledge combine.

Requirements

• Minimum of seven (7) years of experience shipping and maintaining production code
• Strong computer science fundamentals. You have the depth - in data structures, algorithms, memory management, concurrency, and systems thinking - to navigate and make meaningful contributions to a performance-critical codebase.
• Experience delivering production mobile software at scale. You have shipped native mobile applications or SDKs - on iOS, Android, or both - and understand what operating software at scale actually means: release pipelines, crash triage, performance budgets, and the fu

Additional Information

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 The Core Services team builds and maintains onX's proprietary cross-platform map rendering engine, written in C++, shipped as native SDKs to Android, iOS, and web clients. The engine powers map experiences across onX products. We are looking for someone who can bring production engineering expertise - someone who knows what it takes to deliver and operate software at scale, and who is genuinely excited to apply that experience inside a cross-platform mobile graphics engine. The secondary scope of this role is the engine itself. You need to arrive with the CS depth and the production instincts to bring meaningful impact, and a strong motivation to contribute to a successful SDK launch. This role will report to the team's Engineering Manager.

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