Senior Mobile Engineer, Thrive

About the role

You will lead the iOS implementation of Tilt's credit products, translating product hypotheses into production-ready mobile experiences. You will partner with a small, high-ownership team to own the full lifecycle of features from experiment design through launch and iteration. Your work will directly influence how millions of users perceive and interact with credit building tools. You will validate product constructs through disciplined experimentation before scaling successful patterns. You will ensure that every interaction aligns with both user expectations and strict regulatory standards. This role is positioned at the center of product growth and compliance for our Thrive line of credit solutions.

Key facts

What you'll do

• Drive the iOS implementation that grows conversion and engagement for line of credit products, owning the end-to-end user journey from first tap to active account.
• Design and run controlled experiments using A/B testing frameworks to validate product constructs and refine the unified lending experience before full rollout.
• Collaborate with product, design, and data science to instrument analytics events that reveal user behavior and surface high-impact opportunities.
• Partner with backend and data teams to integrate APIs and data models that power dynamic credit decisions and real-time feedback in the mobile app.
• Champion quality and precision by writing tests, performing thorough reviews, and guarding against edge cases that could lead to compliance issues.
• Interpret product requirements and translate them into native iOS implementations, balancing speed with correctness in a regulated environment.
• Own critical paths such as onboarding, application flow, and account management, optimizing for clarity, trust, and conversion at each step.
• Work cross-functionally with compliance and legal to ensure that mobile experiences adhere to evolving regulations and internal policies.
• Mentor and guide more junior engineers as you expand your scope toward owning the entire iOS surface for Thrive products.
• Represent the mobile voice in roadmap discussions, using data and user feedback to propose and prioritize new capabilities.
• Lead the discovery and prototyping of new features, validating assumptions through technical spikes and user testing.
• Coordinate release planning, manage feature flags, and monitor rollout health to ensure smooth and safe deployments.
• Define and track success metrics for experiments and features, iterating based on observed behavioral shifts and business outcomes.
• Partner with analytics engineers to ensure event tracking is reliable, consistent, and aligned with key product questions.
• Contribute to architectural decisions that improve performance, maintainability, and long-term scalability of the iOS codebase.

Requirements

• 5+ years of experience as an iOS engineer building consumer-facing mobile products, with a strong grasp of native development patterns.
• Consumer product background is non-negotiable; you have built products that real users interact with daily and rely on in their routines.
• 5+ years of professional iOS experience, with a deep understanding of Swift, UIKit, and modern iOS app architecture.
• You hold a strong belief in outcome-driven work, taking responsibility for results rather than merely completing assigned tasks.
• You are comfortable operating in a regulated environment where precision, documentation, and correctness directly impact compliance and users.
• You have experience integrating mobile applications with backend APIs and handling asynchronous data flows with resilience.
• You demonstrate mastery of version control, CI/CD practices, and automated testing to maintain high quality at speed.
• You are fluent in analytics platforms and experimentation tools, capable of setting up events and interpreting results to guide product decisions.

Nice to have

• Experience with cross-platform technologies or Android development, enabling collaboration across mobile teams as products scale.
• Familiarity with credit, lending, or financial services domains, and understanding of the compliance implications in mobile financial products.
• Experience with analytics platforms such as Amplitude or FullStory, and experimentation tools like Statsig or LaunchDarkly.

Practical notes

Travel for company offsites is expected at a minimum 2 times a year.