React Native Engineer

Downstream Systems, Inc. is a leading marketplace platform transforming the waste and construction industries from the ground up. We’re on a mission to bring simplicity, transparency, and speed to two of the most essential—but often overlooked—sectors of our economy.LocationDallas, TX / Richardson HQ Hybrid / local candidates preferredAbout the RoleWe’re looking for a highly skilled React Native Engineer to help build and scale Downstream’s core mobile platform across both iOS and Android.This is not a lightweight companion-app role. Mobile is a critical part of our platform and operations. You’ll be working on complex, high-usage workflows used daily by contractors, suppliers, field teams, and enterprise customers managing real-world construction and logistics operations.We need someone who is deeply proficient in React Native and understands how to build performant, scalable mobile applications at a high level. You should be comfortable owning major mobile features end-to-end and solving difficult UX and engineering challenges in a fast-moving environment.What You’ll DoBuild and maintain complex mobile applications in React Native for both iOS and AndroidArchitect scalable mobile application patterns and reusable componentsOptimize app performance, responsiveness, stability, and offline workflowsWork closely with product, design, and backend engineering teams to deliver production-ready features quicklyDevelop mobile experiences for logistics, procurement, equipment management, invoicing, project workflows, and real-time operationsIntegrate APIs, push notifications, maps, camera/photo uploads, authentication, and native mobile capabilitiesDebug and resolve production issues across multiple devices and operating systemsContribute to mobile architecture decisions, code standards, and engineering best practicesHelp drive the evolution of Downstream’s mobile-first operational workflowsWhat Success Looks LikeHigh-quality mobile features shipped consistently and quicklyFast, stable, and polished experiences across iOS and AndroidStrong ownership over app performance and reliabilityAbility to simplify complex operational workflows into intuitive mobile experiencesClean, scalable code that supports long-term platform growthStrong collaboration across engineering, product, and operations teamsWho You AreStrong professional experience building production applications with React NativeDeep understanding of mobile application architecture, state management, performance optimization, and debuggingExperience shipping and maintaining apps in both the Apple App Store and Google Play StoreComfortable working in fast-moving startup environments with high ownershipStrong product intuition and attention to user experienceClear communicator who collaborates well cross-functionallyExcited to build software that solves real-world operational problems in construction, logistics, and procurementNice to HavesExperience with native iOS (Swift) or Android (Kotlin) developmentExperience with React NativeExperience building marketplace, logistics, dispatching, or field-service applicationsFamiliarity with offline-first architecture and real-time operational systemsStartup or high-growth company experienceCompensationCompetitive salaryCompany equityBenefits packageOpportunity to grow with a fast-scaling marketplace platformWhy Join UsYou’ll help build mobile products that directly impact how jobsite teams, suppliers, and operators get work done every day.This is not a “maintain a forgotten app” role. You will push things to production regularly. If you want to build important mobile software, move fast, solve real problems, and help modernize a massive industry, this is your shot.