Remote Senior Unity Developer; Mobile & UI Systems

About Immer

Immerse is building the enterprise platform for Fluency Performance, helping language learners around the world communicate with confidence when it matters most. Our interdisciplinary team of designers, developers, and language experts builds immersive experiences that connect language learning to measurable business outcomes.

Our product spans multiple surfaces (desktop, VR, and mobile), and UI is a core part of how learners succeed. We’re hiring a senior UI engineer who will contribute broadly across UI implementations while bringing a strong mobile-first skillset to the team: responsive layout discipline, real-device performance instincts, and production-grade API-driven UI patterns.

You’ll be expected to own outcomes, make sound tradeoffs, and collaborate tightly with Design, Product, and Education teams to ship polished, resilient UI that holds up in production.

You will own and ship multiple production Unity UI screens and flows end-to-end, including:

• Implementing designs from Figma in Unity uGUI with extendable architecture
• Integrating with backend REST APIs, including async loading, empty, error states, retries, and cancellation
• Profiling and fixing UI performance issues on real desktop, VR, and mobile devices
• Shipping, measuring impact, and iterating post-launch based on analytics + customer/internal feedback

You’ll also contribute to shared UI patterns that benefit our broader surfaces (desktop/VR), using mobile discipline to raise the bar for performance and reliability everywhere.

We are looking for someone who consistently demonstrates:

• End-to-end ownership of complex, API-driven UI flows in production
• Strong judgment under constraints (prioritization, tradeoffs, risk management)
• Clear communication with designers and product partners, including crisp handoffs and async walkthroughs
• Production-minded engineering habits (maintainability, debuggability, reviewability)
• A performance-first mindset on real devices (not just in-editor)

Primary emphasis:

• Unity UI (uGUI):
  Canvas, Rect Transform, Layout Groups, Text Mesh Pro
• Mobile-first responsive layout: portrait constraints, safe areas, varying aspect ratios and resolutions
• REST-driven UI: auth-aware flows, async state management, backend failure modes
• Lifecycle-safe async: stale-response protection, request cancellation on navigation, deterministic state transitions
• Large data UI patterns: pooling/virtualization, incremental rendering, placeholder/skeleton states
• Performance ownership: layout rebuilds, overdraw, draw calls, allocations/GC, memory
• UI architecture that scales: navigation, composition, reusable components, clean boundaries between UI and data
• Practical testing fundamentals:
  Unity Test Framework basics for UI logic/state handling
• Cross-functional iteration loops: partner with Product + Design to improve shipped experiences

• Own delivery of key UI screens and flows end-to-end: discovery, implementation, integration, edge cases, release readiness, and iteration
• Translate Figma designs into production-ready uGUI with stable layout behavior across devices/resolutions
• Build API-driven flows with robust UI states: loading, error, empty, partial data, retries, cancellation, and resilient error handling
• Profile and improve UI performance on lowest supported devices (layout rebuilds, overdraw, draw calls, allocations/GC, memory)
• Establish maintainable UI patterns that support rapid iteration (state management, navigation, composition, reuse)
• Partner closely with Designers and Product Managers to clarify intent, surface edge cases, propose tradeoffs, and align scope early
• Contribute to and maintain UI development documentation (patterns, tokens, performance guidelines, review practices)
• Mentor other Unity engineers through reviews/pairing, raising quality and consistency across UI work
• Keep informed on the market landscape and stay ahead of industry trends to ensure development workflows and design implementations remain competitive and innovative in the application space

To be successful in this role, you must have:

• Highly…