Kristopher Baker

Senior iOS engineer on a consumer delivery app operating in approximately 30 countries.

• Served as iOS client DRI for major Wolt+ initiatives, coordinating delivery across iOS, Android, web, backend, product, design, QA, and data teams in Germany, Finland, and Japan.
• Delivered cart and checkout subscription features that contributed to approximately 30% growth in membership sign-ups through experimentation and iteration.
• Designed a centralized service for Wolt Rewards on iOS, simplifying reward state propagation and keeping subscribed experiences synchronized across the app.
• Initiated and independently developed Telemetry Viewer, an internal analytics verification and debugging tool that accelerated experimentation and improved release confidence across teams.
• Authored technical design proposals and led reviews to align implementation across teams and platforms.
• Built Python and agent-assisted tooling for team testing workflows, eliminating multiple hours of repetitive preparation and coordination per testing session.
• Adopted AI-assisted development workflows and shared practical learnings with the team, leading to an invitation to present agent-based workflows to the broader engineering organization.

Senior iOS engineer on a consumer news application serving millions of users.

• Led the iOS implementation of SmartView v2, a next-generation article rendering pipeline, enabling incremental rollout through parallel implementations, feature flags, and fallback mechanisms.
• Implemented server-driven onboarding with SwiftUI, enabling rapid A/B testing of product experiences independent of application release cycles.
• Owned customer-facing features end-to-end across feed rendering, onboarding, navigation, push notifications, following, and article rendering.
• Collaborated with product, backend, and ML teams across Tokyo and San Francisco on major launches, including News From All Sides and live coverage of the 2020 U.S. election.
• Initiated the transition from Objective-C to Swift and established linting and formatting standards adopted across the iOS team.
• Promoted from Software Engineer to Senior Software Engineer in recognition of technical impact and project ownership.

Developed native iOS applications across fitness tracking, social, and e-commerce products.

• Diagnosed feed-rendering bottlenecks with Instruments and moved layout computation off the main thread, achieving consistent 60fps scrolling performance.
• Led early adoption of Swift and guided production applications through multiple major Swift language migrations.
• Established CI/CD pipelines and release automation with Jenkins and Fastlane, improving development velocity and deployment reliability.
• Awarded Company MVP for delivering critical feed functionality during a team transition while maintaining release commitments.