About the role

As a Lead iOS Engineer, you will own the technical direction of our iOS platform, set engineering standards, and mentor a team of engineers while remaining hands-on with the codebase. You will drive architecture decisions, ensure scalability and performance, and partner with product and cross-functional leadership to shape the mobile roadmap.

Key Responsibilities

• Define and own the technical vision, architecture, and long-term roadmap for the iOS platform.

• Lead, mentor, and grow a team of iOS engineers; set coding standards and review practices.

• Make high-impact architectural decisions and drive modularization/scalability across the codebase.

• Own CI/CD strategy, release management, and deployment reliability.

• Partner with product and design leadership to translate business goals into technical execution.

• Establish observability, performance budgets, and quality gates.

• Remain hands-on: contribute to critical features and complex problem-solving.

Qualifications

• 8+ years of iOS development experience, including 2+ years in a lead or tech-lead capacity.

• Proven track record shipping and scaling B2C subscription-based apps at significant user volume.

• Deep expertise in Swift, Swift Concurrency, and advanced language features; ability to set idiomatic standards across a team.

• Mastery of StoreKit 2, subscription monetization architecture, entitlement/receipt validation at scale, paywall experimentation, and pricing/offer strategy.

• Strong architectural leadership: large-scale modular architectures, dependency management (SPM), design systems, and cross-team API contracts.

• Experience owning CI/CD at scale (Xcode Cloud, Fastlane, GitHub Actions/Bitrise), automated release trains, phased rollouts, and code-signing automation.

• Deep performance engineering: app startup, memory optimization, rendering pipeline, and Instruments-driven diagnosis.

• Comprehensive testing strategy ownership: unit, UI, snapshot, and contract testing with meaningful coverage goals.

• Experience integrating AI-driven product features and championing AI-assisted development practices across a team.

• Strong technical leadership, mentorship, stakeholder communication, and cross-functional collaboration skills.

Location

Ruby Labs operates within the CET (Central European Time) zone. Applicants from any country are welcome to apply for the position as long as they are located within approximately ± 4 hours of CET. This ensures optimal collaboration and communication during working hours.

Benefits

Discover the perks of being part of our vibrant team! We offer:

• Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.

• Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days.

• Paid National Holidays: Celebrate and relax on national holidays with paid time off to unwind and recharge.

• Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them.

• Flexible Independent Contractor Agreement: Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities. Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere. Read more about it here: https://docs.google.com/document/d/1nkrN76JlZkbKj9WSOhlT1_mni_CZeDkHdwfIjPXVwvk/preview?tab=t.0#heading=h.ndsdl4wapxtt

Be part of our fast-growing team and seize this excellent opportunity for personal and professional growth!

Interview Process

After submitting your application, we conduct a thorough review which typically takes 3 to 5 days, but may occasionally take longer due to the volume of applications received. If we see a potential fit, we proceed with the following steps:

• Recruiter Screening (40 minutes)

• Technical Interview (90 minutes)

• Technical Interview (60 min)

• Final Interview (30 minutes)