AR/3D Mobile Engineer

About us:

Trinity Mobile App Labs motto is to Help businesses go mobile.

Trinity Mobile Lab is a Software Company engaged in developing end-to-end web and mobile based solutions serving Android and iOS platforms since 2013. As an expert mobile solution developer, the company architects web and mobile solutions and applications that help businesses grow primarily start-ups looking to build a tech-enabled business, medium and large brands looking for innovative mobile solutions to meet their business requirements. The company offers a full spectrum of IT application services such as doing need-gap analysis, concept development, digital marketing, design, development, and offering customised application-based IT support services.

About the Product:

Soul Home is a spatial analysis platform that captures a users home in 3D via LiDAR (iPhone Pro), ARCore depth (certified Android), or guided photo capture (fallback tier) and runs the resulting spatial model through a deterministic rule engine built on classical Vastu Shastra and Feng Shui doctrine. The 3D capture layer you will own is the foundation of the entire product: every downstream analysis depends on an accurate, correctly oriented model of the users space.

Role Overview:

You will design and build the native 3D capture experience on both iOS and Android, plus the cross-platform app shell that hosts it. This is not an “AR filters” role. It is a spatial computing role: room-scale scanning, mesh generation, coordinate systems, compass-anchored orientation, and structured export of walls, doors, windows, and objects into a format a rule engine can consume.

Core Responsibilities

• Build the iOS LiDAR capture tier using ARKit scene reconstruction and Apple RoomPlan, producing parametric room models (walls, openings, dimensions) and USDZ/glTF exports
• Build the Android ARCore capture tier using the Depth API / Raw Depth API, accumulating depth frames into usable meshes, with capture UX that adapts to widely varying device depth quality
• Implement magnetic/true north binding so every captured model carries reliable absolute orientation (this is a hard product requirement — directional analysis fails without it)
• Design the guided capture UX for both tiers: coverage feedback, tracking-loss recovery, rescan flows, room-size limits, multi-room stitching
• Build the app shell (Flutter or React Native, or native twins — you will help make this call) with native modules bridging to the AR capture layers
• Define the scan artifact contract (mesh + parametric layout + orientation metadata + detected-object anchors) handed to the backend processing pipeline
• Handle offline-first capture with deferred upload; ship and maintain both apps through Play Store and App Store release cycles

Must-Have Skills

Mobile & Languages

• 4+ years mobile development with strong Swift AND Kotlin (we will test both)
• Xcode and Android Studio proficiency, including profiling tools (Instruments, Android Profiler)
• Native module / platform channel bridging from Flutter or React Native
• Full store deployment experience on both platforms: signing, provisioning, review cycles, staged rollouts

AR & 3D (the core of this role)

• Shipped at least one production app using ARKit or ARCore beyond marker/plane demos — depth, meshing, or scene reconstruction
• Solid 3D math fundamentals: transforms, quaternions, coordinate spaces, projection
• Clear working understanding of meshes vs point clouds and when each applies
• Hands-on with RealityKit/SceneKit (iOS) and Filament or SceneView (Android)
• 3D formats: glTF/GLB, USDZ, OBJ, PLY — including conversion and export pipelines
• Camera, IMU, and magnetometer sensor APIs; practical understanding of compass calibration and magnetic declination

Engineering Practice

• Git, code review discipline, and CI/CD for mobile (Fastlane, GitHub Actions, or equivalent)
• REST/JSON API integration, background upload, and offline-first data handling
• Ability to write and work from formal specs (our modules are spec-documented before implementation)
• Clear written and verbal communication in English; comfortable working directly with a founder as sole domain authority

Good-to-Have Skills

• Apple RoomPlan experience, including its multi-room and room-size limitations
• On-device mesh processing (Metal or NDK), mesh decimation, plane fitting
• Experience integrating object detection output (e.g., YOLO) into spatial coordinates
• SLAM/VIO conceptual depth: drift, relocalization, anchor stability, loop closure
• Familiarity with device fragmentation strategy for ARCore-certified hardware in the Indian market
• Flutter or React Native app-shell architecture at production scale
• Unity or Unreal AR experience (useful background, though this role is native-first)
• Basic Python for scripting scan-validation and format-conversion tooling
• Experience with WebSocket or push-based job-status patterns
• Prior work on measurement, scanning, real-estate, or interior-design apps
• Accessibility and localization experience (the wider product ships in 12 languages)

To Apply

You must apply to this job post and additionally send CV + links to shipped apps + a short note on the most technically difficult AR/3D problem you have personally solved at - [email protected]