Senior UI Engineer

Technology at Huge is powered by a global practice of creative technologists-spanning Engineers, QA specialists, Business Analysts, Data Scientists, and ML Architects-we look beyond standard patterns to build resilient, enterprise-grade systems. We combine deep engineering rigor with innovation at the edge of agentic AI, modern data stacks, and cloud infrastructure. We don’t wait for industry standards to set themselves; we engineer the intelligent systems that turn audacious strategic vision into production-ready reality., Huge is looking for a Senior UI Mobile Engineer with a deep specialization in Kotlin to join our team in building high-impact, user-centric mobile applications. As a Senior UI Mobile Engineer, you will serve as the bridge between design, product, and mobile technology, crafting seamless, high-performance user interfaces and robust front-end architectures.

In this role, you will bring exceptional technical rigor to client projects-owning end-to-end mobile feature delivery, driving app performance, and implementing essential mobile capabilities such as push notifications, secure payment processing, and enterprise-grade mobile security. You are someone who takes pride in product craft, understands the backend integrations powering mobile APIs, and can showcase a portfolio of successfully launched applications., * Partner closely with Design and Product teams to translate complex UX/UI designs into polished, responsive, and performant Kotlin mobile interfaces.

• Drive end-to-end integration of core app capabilities, including push notification infrastructure, payment gateways/processing, and advanced mobile app security protocols.
• Own the release process and maintain build hygiene, leveraging continuous integration tools to ship updates smoothly to public app stores.
• Design and build automated CI/CD pipelines using GitHub Actions to optimize testing, build times, and deployment cadence.
• Collaborate with backend teams on API design and documentation; leverage working knowledge of backend ecosystems (e.g., Node.js) to ensure efficient data orchestration and smooth mobile-to-API communication.
• Serve as the Kotlin/Android SME while collaborating across cross-functional mobile stacks (including Swift or React Native) to ensure alignment on shared client projects.

A successful candidate brings 5+ years of mobile engineering experience, mastery of modern Android UI architecture, solid secondary experience or familiarity with Swift (or cross-platform tools like React Native), and a hands-on understanding of cloud and CI/CD ecosystems., * 5+ years of mobile engineering experience, with a primary focus on native Kotlin development.

• Demonstrated experience launching at least 2+ apps on public app stores.
• Direct hands-on experience implementing push notifications, payment processing (e.g., Stripe, In-App Purchases), and mobile app security best practices.
• Secondary Mobile Stack: Familiarity or hands-on experience with Swift (iOS) or cross-platform solutions such as React Native.
• Proven experience building and maintaining CI/CD pipelines using GitHub Actions.
• Practical experience working alongside at least one major public cloud platform (GCP, AWS, or Azure).
• Proficiency in leveraging modern AI coding tooling (e.g., Gemini or Claude Code) to accelerate spec-driven development, automated refactoring, and AI-driven code reviews while maintaining strict code quality and test coverage.
• Experience with autonomous multi-agent systems including task planning, memory management, tool calling/APIs, and evaluation frameworks.
• Strong understanding of REST/GraphQL API design, API documentation standards, and basic backend concepts (e.g., Node.js).
• Excellent written and verbal communication skills, with a collaborative mindset for working with client teams and cross-functional discipline leads.
• Deep hands-on experience with Jetpack Compose (and interop with legacy View-based UI where needed).
• Practical experience with OAuth2/OIDC token flows, PKCE, secure credential storage (Android Keystore), and certificate pinning.
• Demonstrated experience with JUnit, MockK, and Espresso, and familiarity with contract testing against API specifications.
• Experience integrating hosted third-party flows via WebView (e.g., hosted payment pages) and implementing deep links / app links.
• Working knowledge of mobile accessibility guidelines (WCAG) and platform accessibility tooling., If the selected candidate holds a degree in Engineering or a related profession, they must present their professional license. To verify your degree requires this license, please visit www.copnia.gov.co and https://www.consejoprofesional.org.co/.

Huge is an independent, human-first AI-native design and technology company. We make things that matter by bringing AI, people, design and technology together as one system. With more than 1,000 design and technology experts working in hub cities around the world, including Bogotá, Chicago, Ho Chi Minh City, London, Los Angeles, Medellín, New York, San Francisco, and Washington, DC, we partner with some of the world’s most ambitious brands, including Google, NBCU, PepsiCo, Vail Resorts, Atlantic Health, and Candescent. Learn more at hugeinc.com.

Huge is committed to creating an inclusive employee experience for all. Regardless of race, gender, religion, sexual orientation, age, disability, or if you’re parenting the next generation of innovators, we firmly believe that our work is at its best when everyone feels free to be their most authentic self.