Software Engineer Mobile (Kotlin Multiplatform) (fixed-term) (all genders)

• Drive key technical decisions alongside staff engineers and architects.
• Collaborate closely with product, design, and backend teams to deliver features tradespeople love.
• Define coding standards, best practices, and internal frameworks for the mobile codebase.
• Ensure software quality through testing, CI/CD automation, and performance monitoring.
• Contribute to shaping ToolTime's long-term mobile strategy and platform direction., * You'll get insights into one of the best-funded startups in the trades industry and support us in a highly exciting growth phase.
• We foster a culture of curiosity, positivity, and collaboration (our core values).
• We value honest feedback and continuous learning , giving everyone the space to experiment - and make mistakes.
• Plenty of room for ownership, creativity, and personal growth.

• Are self-driven, strive for excellence, and thrive among talented colleagues.
• Want to shape a product with real industry impact - not just work in a ticket factory.
• Value open collaboration where every voice matters.
• Work best with colleagues who support you and set you up for success., * 5+ years of professional experience in mobile development.
• Deep experience in Kotlin Multiplatform (KMP) and building shared architecture from scratch.
• Strong understanding of modular architecture, clean code, and testability.
• Hands-on experience with Coroutines, Koin/Hilt, Ktor and modern architectural patterns (MVVM, MVI, Clean Architecture).
• Track record of shipping and maintaining production-grade Android or cross-platform apps.
• Experience integrating mobile apps with REST/GraphQL APIs.
• Strong focus on delivering excellent UX and high-performing mobile experiences.
• Bonus: iOS/SwiftUI experience.
• Interest in the latest mobile technologies, including Kotlin, Jetpack Compose, KMP, and mobile tooling.

• Build your own benefits package from more than 35 partners such as Urban Sports Club, Blinkist, 7Mind, Ikea, and many more.
• Access to our Corporate Benefits Portal with exclusive discounts on travel, sports, fashion, and more.
• 30 days of vacation , regular team & company events, plus two Company Weeks per year .
• A hybrid work model: 2 days per week in our vibrant Friedrichshain office , close to Boxi & Warschauer Straße - and the flexibility to work 3 days a week remotely from home, including Workation options .

If this sounds exciting - let's find out if we're a good fit.

Also check out our blog .

ToolTime is a Software-as-a-Service solution that helps craftsmen tackle all administrative tasks of their business.

Our purpose is to make their lives easier and more effective.

We offer a clear tool that covers all work steps in craft businesses, from customer enquiries to invoicing and everything can be carried out quickly and easily.