Senior iOS Engineer

Roslin – Building the Future of Transportation TechnologyAt Roslin, we develop cutting-edge platforms and solutions for the transportation industry, powering everything from real-time fleet tracking to complete operational integration for the U.S. market. You’ll be working on a world-class product suite built with a best-in-class tech stack and an A+ engineering team. We don’t just build software - we’re building AI-native platforms, applying an AI-first approach across every layer of our technology.We’re looking for a Senior iOS Engineer (Swift/SwiftUI) to own the architecture, performance, and delivery of our transportation applications - ensuring reliable real-time trips, smooth navigation, and top-tier user experience.As a senior member of our engineering team, you’ll lead the evolution of our iOS codebase, mentor others, and collaborate closely with backend and product teams to build resilient, scalable, and high-performing mobile solutions used daily by thousands of drivers and passengers across the U.S.🧩 What You’ll DoOwn app architecture: Drive a modular Swift/SwiftUI codebase using MVVM/Clean Architecture, async/await, and actors; define module boundaries, dependency rules, and testing strategy.Ship real-time trip experiences: Build reliable REST/gRPC layers, offline caching, and resilient networking (retries, backoff, idempotency) for offers, trip state, navigation, and earnings.Handle background & live surfaces: Implement BackgroundTasks for deferred work and URLSession background transfers; expose progress and trip state via Live Activities (lock screen/StandBy) and notifications.Location & telemetry: Implement energy-aware Core Location (significant-change, visit, region monitoring), background updates, and privacy-forward permission flows.Quality bar: Maintain fast startup, smooth rendering, and low battery/memory footprint; add traceable logs with os.log, crash reporting, and metrics dashboards.Testing & CI/CD: Write XCTest/XCUITest (including test plans) and snapshot tests; automate builds, signing, and TestFlight/App Store delivery with Fastlane + GitHub Actions.Design & accessibility: Partner with Design to follow HIG, Dynamic Type, VoiceOver, and color/contrast best practices; localize and support RTL where needed.Collaborate cross-functionally: Work closely with Backend (PHP/Laravel/MySQL/Redis/Horizon), Product, and Ops to define API contracts, performance budgets, and rollout plans.🛠 Technical SkillsExpert in Swift, SwiftUI, Combine, and async/await, with solid UIKit knowledgeDeep experience with MVVM, Clean Architecture, and modularizationNetworking (REST/gRPC), data persistence (Core Data/Realm), secure keychain & ATSCI/CD: Fastlane, GitHub Actions, TestFlight & App Store deliveryPerformance profiling with Instruments and advanced debugging toolsAccessibility and internationalization best practicesStrong Git habits, code review leadership, and mentorship experienceFull-stack literacy with PHP, Laravel, MySQL, Redis, Horizon, Go for end-to-end debugging📈 Relevant Experience5+ years of experience building and shipping iOS apps at scaleMultiple production releases available on the App StoreProven experience hardening networking layers for poor connectivity and reliabilityBackground in real-time, event-driven, or transportation/logistics applications is a plusExperience with A/B testing, feature flags, or remote configuration systems is welcomed🤝 Soft SkillsFluent English (written and spoken)Excellent communication and collaboration skillsDetail-oriented, proactive, and ownership-drivenAbility to deliver under pressure while maintaining quality💼 What We Offer💰 Competitive compensation tailored to your skills and impact 📄 Employment based on B2B or regular Employment 🏙️ Work model: On-Site from Bucharest 🗓️ Flexible hours — choose 9–6 / 10–7 / 11–8 🏢 Brand-new office with modern setup 👨 Fully in-house engineering team — no outsourcing or outstaffing 🚄 High-impact, mission-critical projects for the U.S. market from day one 🚀 Clear growth path and ownership opportunities 🤝 Knowledge sharing, mentorship, and continuous learning within a world-class engineering team 🤖 Company-paid access to Claude Opus 4.1 and Codex GPT-5 for AI-assisted developmentBe part of a team that’s redefining how transportation technology works - from concept to scale.At Roslin, your code won’t just run; it will move industries forward.📧 Send your CV to hrro@roslin.us or hit that LinkedIn Apply button - your next challenge starts here!