• Define application architecture, technical requirements, and integration standards for enterprise mobile solutions • Design secure, scalable, and maintainable Android application architectures using Kotlin • Define middleware and API orchestration strategies, including BFF, app proxy, aggregation, and integration patterns • Establish architecture standards for resiliency, caching, error handling, fallback responses, and graceful degradation • Design and govern MDM and Kiosk Mode strategies to support enterprise device management requirements • Define security standards and architecture controls aligned with OWASP Mobile and enterprise security requirements • Ensure compliance with accessibility standards, data protection requirements, and enterprise architecture guidelines • Collaborate closely with Product, Engineering, UX/UI, and business stakeholders to align architecture decisions with business objectives • Provide technical leadership and architectural guidance throughout implementation and delivery phases • Review solution designs and ensure adherence to architecture standards and best practices • Document architecture decisions, technical requirements, and solution designs • Drive continuous improvement initiatives related to architecture, performance, scalability, and maintainability

• Define and evolve the mobile architecture strategy for both iOS (Swift) and Android (Kotlin) platforms, ensuring scalability, performance, and maintainability • Lead technical decision-making on cross-platform consistency, shared design patterns (MVVM, MVI, Clean Architecture), and platform-specific optimizations • Design and develop critical native features in iOS (Swift, SwiftUI) and/or Android (Kotlin, Jetpack Compose), including secure authentication flows (Auth0, OAuth2) and cloud service integrations • Mentor and upskill senior and mid-level mobile engineers through code reviews, design reviews, architecture discussions, and pair programming • Establish and enforce mobile engineering standards: code quality, testing strategies (unit, UI, integration), security practices (Keychain, secure storage, certificate pinning), and CI/CD best practices • Drive adoption of automated testing frameworks (XCTest, JUnit, Espresso, Compose UI tests) and mobile observability tools (Firebase Crashlytics, analytics platforms) • Collaborate closely with Product, UX, Backend, and DevOps teams to align mobile technical roadmap with business priorities and ensure seamless API integrations • Unblock complex technical challenges, conduct root cause analysis for production issues, and champion continuous improvement across mobile platforms

Role Description - Evaluate technical tasks in Scala, Kotlin, or OCaml against real-world professional standards. - Review intricate code-level situations and provide precise, structured written assessments. - Work inside containerized repositories using Docker to run and interpret programmatic and CI-style checks. - Provide clear written rationales explaining expert judgments. - Complete well-defined, time-bounded tasks with explicit evaluation criteria. Qualifications - 5+ years of professional software engineering in Scala, Kotlin, or OCaml. - Comfort working in Docker/CI-based repo environments. - Ability to articulate clearly why code is correct or idiomatic in writing. Requirements - Engineers from top product, data, or research engineering backgrounds. Benefits - Hourly contractor compensation: $120–200/hour. - Remote work opportunity. - Commitment of 20–40 hours/week. Application Process - Upload resume. - AI interview based on your resume. - Submit form. Resources & Support - For details about the interview process and platform information, please check: Interview Process . - For any help or support, reach out to: support@mercor.com .

Role Description We are expanding our team of Mobile software developers and we are looking for bright people who enjoy dynamics and are eager to learn and develop their professional skills. You will have the opportunity for fully remote or hybrid work (remote and in the office in Sofia). As a Kotlin Multiplatform Developer, you’ll be: - Working in a supportive environment on projects for international clients - Participating across diverse domains and tech stacks, covering the full software development lifecycle (feature development, maintenance, troubleshooting, testing, documentation, etc.) - Collaborating with developers of various seniority levels to analyze requirements, propose architecture and system design solutions, and estimate and plan tasks - Communicating effectively with team members and clients regarding tasks, requirements, and issues - Continuously learning new technologies, taking part in knowledge-sharing initiatives (e.g. internal trainings), and pursuing professional certifications Qualifications - Solid understanding of Swift or Kotlin - Experience building native UI for iOS (SwiftUI, UIKit) or Android (Jetpack Compose, XML) - Understanding of mobile architectural patterns such as MVVM, MVI, or MVC - Familiarity with local data persistence (Room, Core Data, SwiftData, SQLite, or Realm) - Genuine interest in cross-platform mobile development and working within a Kotlin Multiplatform (KMP) architecture - Fluency in English Requirements - Experience with Kotlin Multiplatform (KMP) will be considered an advantage - Familiarity with Objective-C and/or Java - Exposure to React Native, Flutter, or other cross-platform frameworks - Familiarity with testing, CI/CD, and distribution tooling (TestFlight, Firebase App Distribution, Play Console) and App Store / Google Play publishing processes