Staff Software Engineer, ditto

• If you’re passionate about pushing the boundaries of cross-platform development, mentoring teammates on best practices, and delivering world-class SDK experiences, this is the role for you
• 4+ years of professional software development experience
• Proven track record of delivering production-quality applications and libraries in a team setting
• Hands-on experience configuring shared modules, source sets, and Gradle builds to target Android, iOS, desktop, and web
• Practical use of on-device storage solutions such as SQLite or SQLDelight, especially in synchronization scenarios
• Ability to read native stack traces, interpret logs and memory dumps, and troubleshoot issues across distributed environments
• Experience designing and implementing unit, integration, and end-to-end tests, and integrating them into automated build and release pipelines
• Strong written and verbal communication to thrive in an async-first, distributed team—drafting clear design docs, participating in code reviews, and coordinating with customers and stakeholders

Desirable

• As a Kotlin Multiplatform Engineer on Ditto’s SDKs team, you will play a pivotal role in simplifying real-time data synchronization for developers across multiple platforms
• You’ll leverage Kotlin’s shared code capabilities to craft elegant, high-performance SDK modules that run seamlessly on Android, iOS, web, IoT, and desktop
• Working closely with product managers, designers, and backend engineers, you’ll translate user needs into intuitive APIs and robust libraries—all while navigating the low-level FFI layer to connect Kotlin with our Rust core
• From day one, you’ll own the full development lifecycle: architecting shared multiplatform modules, writing and refining FFI bindings for safe, efficient cross-language calls, authoring comprehensive automated tests, and streamlining CI/CD pipelines for reliable releases
• You’ll partner directly with customers and support teams to diagnose integration issues, optimize performance on resource-constrained devices, and iterate quickly on feedback
• You’ll join a small, globally distributed group that values trust, clear communication, and continuous improvement
• In our async-first culture, your written design docs and code reviews carry as much weight as face-to-face meetings, and occasional offsite gatherings bring us together to share learnings and strengthen our bond
• Drive the design, implementation, and ongoing maintenance of Ditto’s shared Kotlin Multiplatform libraries, ensuring they meet our high standards for reliability, performance, and developer ergonomics
• Expose public interfaces that feel natural in each target environment—Android, iOS, web, and desktop—while maximizing shared-code reuse and minimizing platform-specific boilerplate
• Implement safe, efficient Foreign-Function Interface bindings between Kotlin/Native and our Rust core, adhering to best practices for memory management, threading, and error handling
• Manage source sets, Gradle configurations, and platform quirks to deliver seamless SDK behavior across diverse architectures and operating systems
• Write and automate unit, integration, and end-to-end tests (including native interop scenarios) to continuously validate SDK functionality and guard against regressions
• Collaborate with the Release and QA teams to embed your tests into our continuous integration workflows, monitor release quality, and iterate rapidly on customer feedback
• Triage and resolve customer-reported integration issues, debug edge-case failures in the field, and feed learnings back into product and engineering roadmaps
• Share your expertise in Kotlin Multiplatform, FFI integration, and cross-platform testing techniques through design reviews, brown-bags, and one-on-one coaching to level up the entire SDKs team