Mobile Engineer

Overview

In this role, you will contribute as an experienced Android engineer to a banking-focused delivery team, delivering on complex Android codebases. You will work within a hybrid, short-term engagement with potential extension, focusing on understanding, mapping, and improving large production apps. You will leverage Kotlin, Jetpack Compose, and multi-module architectures to derive runtime behavior and support secure, scalable mobile solutions. You will collaborate with cross-functional teams to ensure robust architecture, observability, and API integration.

Responsibilities

• Read and untangle large multi-module Android codebases and map their structure
• Develop with Kotlin and Jetpack Compose, integrating legacy View-based UI where needed
• Analyze architecture patterns (MVVM, MVI, Clean) and identify actual code behavior
• Perform code archaeology, static analysis, and dependency graph extraction at scale
• Navigate CI/CD pipelines (Fastlane, Bitrise, GitHub Actions, Jenkins, Gradle/Xcode) as architectural truth
• Reconstruct runtime behavior from instrumentation and observability tools (Crashlytics, Sentry, Dynatrace, Firebase)
• Trace UI interactions through networking to backend services (REST/GraphQL/gRPC, OpenAPI)
• Assess OAuth2/OIDC token flows on device and third-party SDKs
• Address banking-specific concerns: secure storage, biometric auth, certificate pinning, feature flags, offline behavior
• Collaborate in structured interviews, take rigorous notes, and review others’ work in a collaborative, non-defensive manner
• Work with a self-directed, time-constrained schedule to deliver within 8 weeks
• Read and interpret security, telemetry, and performance considerations to validate Architect’s findings

Key requirements

• Proven Android engineering experience with Kotlin in large production codebases
• Strong knowledge of modern Android development using Jetpack Compose and legacy UI (View)
• Experience with architectural patterns: MVVM, MVI, Clean layering
• Ability to perform code archaeology and static analysis across multi-module projects
• Familiarity with reading and interpreting CI/CD pipelines and Gradle/Xcode build logic
• Experience with observability tools and instrumentation (Crashlytics, Sentry, Dynatrace, Firebase)
• Understanding of REST/GraphQL/gRPC and API contract inspection (OpenAPI)
• Knowledge of OAuth2/OIDC flows on device and integration with third-party SDKs
• Banking/mobile security concepts: secure storage, biometrics, device binding, pinning, feature flags
• Strong communication and collaboration skills in English; structured interview and note-taking competence

• Structured, evidence-based thinking
• Collaborative and non-territorial
• Self-directed under time pressure
• Kotlin
• Android
• Jetpack Compose

…