Remote (contract) Senior Software Engineer, Android to support App Experience and App Growth within Core Experiences. Responsibilities include delivering medium-complexity initiatives, system design, improving Android app experiences, ensuring quality/testing/observability, and cross-functional collaboration. Role requires at least four hours overlap between 15:00–21:00 UTC. Requires a bachelor's and 5+ years related experience; strong Kotlin, Jetpack Compose, XML and Android performance optimisation experience. Hiring is available in a specified list of countries (also multiple US states). A US compensation range is listed in the posting.

Kraken is hiring a Senior Software Engineer with strong React Native and mobile product experience to design, implement, launch, and iterate consumer features for a new app aimed at Asian users. The role requires working with APIs and real-time data, collaborating closely with Product and Design, addressing regional UX and connectivity/firewall constraints, and raising engineering standards through architecture, code reviews, and measurement.

Remote Senior macOS Developer role responsible for designing, developing, testing, and maintaining macOS applications; integrating authentication and identity capabilities; implementing Apple security best practices (Keychain, code signing, certificates, entitlements); troubleshooting macOS, API, and authentication issues; and collaborating with engineering, security, identity, and architecture teams. Requires 5+ years experience with Swift/Xcode, SwiftUI/AppKit/ UIKit, REST APIs, OAuth2/OIDC/JWT, Git/GitHub, CI/CD, and advanced English. Familiarity with AI-assisted development tools is expected.

Remote Senior macOS Developer role open to candidates located in Mexico, Colombia, Bolivia, Costa Rica, or Peru. The role requires 5+ years of software development experience with strong proficiency in Swift and Xcode, macOS/iOS app development (SwiftUI, AppKit/ UIKit), REST API integration, and authentication technologies (SSO, OAuth 2.0, OIDC, JWT). Candidates should understand Apple security concepts (Keychain, certificates, code signing, entitlements), have experience with Git/GitHub and CI/CD, be familiar with AI/Generative AI tools, and possess advanced English communication skills.

Wikimedia Foundation seeks a Senior Software Engineer, iOS on a 3-month full-time contract to work on the App Growth team. Responsibilities include delivering medium-complexity initiatives end-to-end, system design, improving the iOS Wikipedia app, instrumentation for observability, and cross-functional collaboration. Requires a bachelor's degree and 5+ years professional experience building iOS apps with strong proficiency in Swift, SwiftUI, and UIKit. Role is fully remote but requires at least four hours of each workday between 14:00 and 21:00 UTC. Hiring is currently open in a specified list of countries.

Remote senior macOS developer position (Mexico, Colombia, Bolivia, Costa Rica, Peru) requiring 5+ years of software development experience. Key skills include Swift, Xcode, SwiftUI/AppKit, REST API integration, authentication (OAuth2, OIDC, JWT, SSO, MFA), Apple security (Keychain, certificates, code signing), Git/CI/CD, and familiarity with AI/Generative AI tools. Advanced English communication required.

Kraken seeks a Senior React Native Engineer to build and ship production mobile experiences for the Kraken app. The role requires strong React Native experience, end-to-end ownership of features (discovery through iteration), working with APIs and real-time data, making architecture and performance decisions, and close collaboration with Product and Design. Nice-to-haves include fintech/crypto experience, real-time interfaces, web/mobile breadth, and native Swift or Kotlin experience.

Join Kraken's Krak consumer pod to design, develop, and maintain high-quality React Native mobile applications using TypeScript. Own end-to-end delivery of features, work with product/design and Rust backend engineers, focus on performance, real-time systems (WebSockets), testing, and strong UX. Role expects 3+ years of software development experience and strong English communication.

Join Kraken's Consumer engineering team to deliver cross-platform web and mobile experiences using React, React Native and TypeScript. Responsibilities include end-to-end ownership from discovery to production monitoring, driving A/B testing and experimentation, making architecture decisions (Next.js, React Server Components), mentoring engineers, and using AI-assisted development tools. Requires 6+ years experience and strong English communication.