Senior Mobile Developer – Android, Kotlin

Omie

Senior Mobile Developer at Omie, focusing on high-performance Android applications and mentoring junior developers. Involves complex app architecture and robust integrations in a dynamic team.

Posted 4/29/2026full-timeRemote • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies

AndroidFirebaseGradleKotlinSOAP

About the role

Key responsibilities & impact

We are looking for a Senior Android Kotlin Mobile Developer to build high-performance native applications, focusing on smooth user experiences and robust integrations. With at least 5 years of proven experience, you will work on the architecture of complex apps (e.g., POS, fiscal receipts), performance optimizations, and technical mentoring.
Design and implement MVVM architectures with Koin, Jetpack Compose and dynamic modularization.
Develop advanced integrations (Retrofit, SOAP/REST web services, Firebase, push notifications).
Optimize performance and perform bottleneck analysis.
Ensure an offline-first approach using Room, WorkManager and caching/synchronization strategies.
Lead code reviews, refactorings and migrations (e.g., XML to Compose, Kotlin Multiplatform).
Implement security (biometrics, encryption, certificates) and accessibility (Material 3).
Mentor junior and mid-level engineers, define standards and contribute to mobile CI/CD (Gradle).
Monitor applications with Crashlytics.

Requirements

What you’ll need

5+ years of native Android development experience with advanced Kotlin.
Strong command of Jetpack (Compose, ViewModel, Navigation, Coroutines/Flow).
Experience with real-world integrations (fiscal APIs/NF-e, POS systems, payments).
Proven architecture experience (Clean Architecture/MVVM) and automated testing.
Experience publishing apps to the Play Store and optimizing for a wide range of devices.
Experience using Kotlin for shared logic.
Experience with Firebase and advanced security (OAuth, certificates).

Benefits

Comp & perks

Flexible benefit / meal allowance: BRL 45.00 per working day.
Home office allowance.
Need to work on-site? We provide transportation vouchers. For employees commuting by train/metro we offer a shuttle from the station to the office.
Bradesco health insurance.
Amil Dental dental plan.
Pharmacy assistance.
Childcare assistance.
Birthday day off to celebrate as you wish!
Access to partner apps for accredited gyms to support physical health and wellness.
Partnerships with online therapy and meditation platforms for mental health and relaxation.
Partnership with SESC - Credencial Plena.
Exclusive discounts at top universities and educational institutions for undergraduate, postgraduate and MBA courses. Free access to Omie Academy for employees.
Partnerships for in-company English courses.
Insurance discount program.
Swile Shop: exclusive discounts platform.
Partnership with Dell.
PPRL (profit-sharing program).
Travel benefits.
Life insurance.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

KotlinMVVMJetpack ComposeRetrofitSOAPRESTFirebaseRoomWorkManagerGradle

Soft Skills

technical mentoringleadershipcode reviewsrefactoringperformance optimizationbottleneck analysisdefining standards