Mobile Application Developer

## Company Description INFICON is a leading provider of innovative instrumentation, critical sensor technologies, and Smart Manufacturing/Industry 4.0 software solutions that enhance productivity and quality of tools, processes, and complete factories. These analysis, measurement and control products are essential for gas leak detection in air conditioning/refrigeration and automotive manufacturing. They are vital to equipment manufacturers and end-users in the complex fabrication of semiconductors and thin film coatings for optics, flat panel displays, solar cells and industrial vacuum coating applications. Other users of our vacuum-based processes include the life sciences, research, aerospace, packaging, heat treatment, laser cutting and many other industrial processes. We also leverage our expertise in vacuum technology to provide unique, toxic chemical analysis products for emergency response, security, and environmental health and safety. ## Job Description ​​​​​​As a Mobile Application Developer (Software Developer) on our Engineering team, you will build and evolve the iOS and Android apps that HVAC/R technicians rely on in the field. You will design features that pair phones with our service tools over Bluetooth Low Energy (BLE), and Wi-Fi, and NFC, capture and visualize live sensor data (pressure, temperature, refrigerant mass, micron levels, combustion readings), and embed AI capabilities that turn raw data into clear, actionable guidance for the technician. This role sits at the intersection of mobile engineering, embedded device communication, and applied AI. You will partner closely with firmware engineers, product managers, UX designers, and — most importantly — working HVAC/R technicians whose feedback shapes every release. **Mobile Application Development** - Design, build, and maintain features for our iOS (Swift / SwiftUI) and Android (Kotlin / Jetpack Compose) apps, with selective use of cross-platform frameworks (React Native or Flutter) where appropriate. - Build clean, intuitive UIs optimized for one-handed use in attics, mechanical rooms, on rooftops, and in gloves — not in a quiet office. - Implement an offline-first architecture so technicians can keep working in basements, walk-in coolers, and remote sites with no connectivity, then sync cleanly when they’re back online. - Write well-tested, maintainable code with strong attention to performance, battery life, and crash-free sessions on a wide range of devices. - Make AI-assisted development a core part of how you work. Use AI coding assistants and agentic tools to accelerate everyday development, while keeping a high bar for code quality, security, and maintainability **Phone-to-Tool Communication** - Own and extend the mobile-side stack that pairs and communicates with HVAC/R service instruments over **Bluetooth Low Energy (BLE)**, **Wi-Fi Direct**, and **NFC**, including connection management, reconnection logic, and firmware-version compatibility. - Implement reliable streaming and logging of live sensor data — system pressures, superheat/subcool, vacuum levels, refrigerant charge, temperature differentials, combustion readings, and leak-rate data. - Collaborate with firmware engineers on BLE GATT profiles, message schemas, OTA firmware updates pushed through the app, and diagnostic flows for field troubleshooting. - Integrate with adjacent ecosystems used in the trade: refrigerant tracking and reporting platforms, EPA Section 608 compliance workflows, dispatch / field service management (FSM) systems, and customer-facing report delivery (PDF, email, e-sign). - Help evolve our SDK so third-party HVAC/R apps can talk to our tools the same way our first-party app does. **Cross-Functional Collaboration** - Partner with product managers, UX designers, firmware engineers, and cloud/back-end engineers to ship end-to-end features. - Participate in field visits and ride-alongs with HVAC/R technicians to observe real installs, start-ups, and service call…