Žiga B.

Speak is an AI-powered language-learning app that scaled to a $1 billion valuation, offering personalized lessons through voice and text.

• Joined as the second iOS engineer and built core application components from the ground up, supporting the company's growth to a $1 billion valuation.
• Developed Speak Tutor, an AI-powered language tutor that adapted to users' proficiency levels and delivered real-time feedback through voice and text.
• Implemented personalized AI lesson features that allowed users to create custom practice scenarios for targeted skill development.
• Designed and built a CI/CD system using Bitrise, GitHub Actions, custom Bash scripts, and Linear API integration to streamline the software delivery process.
• Planned and executed A/B tests that measurably improved user activity, satisfaction, and retention.
• Established mobile team best practices for code reviews, releases, hotfixes, and acceptance criteria, improving code quality and consistency.
• Supported application launches in new markets, including South Korea, Japan, Taiwan, Mexico, Portugal, France, and Germany.

Beat is a ride-hailing platform operating across Europe and Latin America, connecting passengers with drivers in real time.

• Built developer infrastructure, including UI and snapshot testing, to improve feature development, testing, and release efficiency.
• Migrated the existing codebase to modern architectures, improving stability, scalability, and maintainability.
• Implemented a new low-level communication protocol that reduced lost passenger requests, increasing ride acceptance rates and company revenue.
• Owned the CI/CD pipeline end-to-end, automating manual tasks and streamlining build, testing, and deployment processes.
• Prepared the codebase for major iOS releases, ensuring smooth transitions and compatibility with new system versions.

Blub Blub builds a speech-therapy app that uses interactive technology to help children improve their speech abilities.

• Engineered and maintained complex UI components and custom internal frameworks for a speech therapy application.
• Developed advanced camera functionality, including real-time face detection, to enhance application capabilities.
• Improved application performance and stability, reducing bugs and enhancing the overall user experience.
• Collaborated with cross-functional teams on feature planning, prioritization, and execution to support efficient delivery.
• Trained and mentored junior engineers through one-on-one sessions and workshops, promoting coding best practices.

1tap by Receipt Bank (now Dext) is a fintech app for self-employed users to capture, manage, and export financial data and receipts.

• Built key features for a self-employment application, handling sensitive financial data in accordance with security best practices and regulatory requirements.
• Integrated Apple frameworks, including ARKit and Core ML, to enhance user onboarding and in-app experiences.
• Enhanced the Android version with new features, including receipt tags, data exports, and camera modes.
• Collaborated with product, design, and QA teams to ensure smooth feature rollouts and prompt issue resolution.
• Planned and executed automated unit and UI tests, improving application stability and reducing post-release defects.