Senior iOS Engineer

Roslin – Building the Future of Transportation Technology

At
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 Do

• Own 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 , 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 Skills

• Expert in
  Swift
  ,
  SwiftUI
  ,
  Combine
  , and
  async/await
  , with solid UIKit knowledge
• Deep experience with
  MVVM
  , Clean Architecture, and modularization
• Networking (REST/gRPC), data persistence (Core Data/Realm), secure keychain & ATS
• CI/CD: Fastlane, GitHub Actions, TestFlight & App Store delivery
• Performance profiling with Instruments and advanced debugging tools
• Accessibility and internationalization best practices
• Strong Git habits, code review leadership, and mentorship experience
• Full-stack literacy with
  PHP, Laravel, MySQL, Redis, Horizon, Go
  for end-to-end debugging

Relevant Experience

• 5+ years of experience building and shipping iOS apps at scale
• Multiple production releases available on the App Store
• Proven experience hardening networking layers for poor connectivity and reliability
• Background in real-time, event-driven, or transportation/logistics applications is a plus
• Experience with A/B testing, feature flags, or remote configuration systems is welcomed

Soft Skills

• Fluent English (written and spoken)
• Excellent communication and collaboration skills
• Detail-oriented, proactive, and ownership-driven
• Ability 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
Iasi

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 development

Be 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

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LinkedIn Apply
button - your next challenge starts here