Вакансии Mobile Developer / Engineer

Our mission at Geniusee is to help businesses thrive through tech partnership and strengthen the engineering community by sharing knowledge and creating opportunities. Our values are Continuous Growth, Team Synergy, Taking Responsibility, Conscious Openness and Result Driven. We offer a safe, inclusive and productive environment for all team members, and we’re always open to feedback. If you want to work from home or work in the city center of Kyiv, great – apply right now.

Requirements

• 7+ years of relevant experience in the IT industry, with strong expertise in, including ECMAScript;
• Proven experience leading teams in a mobile development environment;
• Deep expertise in React, Redux/MobX, Webpack, JavaScript and TypeScript;
• Experience with Redux Saga and dynamic pipeline development;
• Proficiency in GIT and branching workflows;
• Solid experience in unit testing and integration testing to ensure high-quality application development;
• Strong understanding of mobile application architecture and best practices;
• Experience working in agile, cross-functional teams, driving collaboration and innovation;
• Excellent problem-solving and decision-making skills with a proactive approach to addressing challenges;
• English communication skills: Upper-Intermediate level or higher.

What you will do

• Lead the development and support of complex, hybrid mobile applications using React , JavaScript, and TypeScript;
• Oversee technical decisions, define best practices, and establish coding standards for the team;
• Collaborate with stakeholders, product owners, and designers to define and drive the technical roadmap for mobile development;
• Understand and apply native mobile development concepts, with basic knowledge of Swift/Objective-C (iOS) and Kotlin/ (Android);
• Drive the adoption of scalable and maintainable architectures, ensuring high performance and reliability of mobile applications;
• Lead the integration of back-end and external APIs, including GraphQL, to enable efficient communication with backend services;
• Oversee and participate in code reviews, ensuring adherence to development standards and best practices;
• Own the deployment process, including preparing and publishing applications on the App Store and Google Play;
• Act as a technical point of contact for cross-functional teams and stakeholders across different geographies;
• Proactively identify and address performance bottlenecks and technical issues;
• Lead estimation and planning sessions, ensuring realistic sprint goals and on-time delivery of key features; Conduct technical interviews for hiring mobile engineers, ensuring the right talent joins the team;
• Foster a culture of collaboration, innovation, and continuous improvement within the team.

We are looking for a Middle Strong/Senior Android Engineer to join a full-time healthcare project focused on wireless health monitoring for pregnant persons and newborns. The solution includes wearable devices, AI-powered analytics, and cloud-based software to improve access to health data.

What We’re Looking For:

• 5+ years of experience developing Android applications
• Strong knowledge of Android UI frameworks and Android OS
• Hands-on experience with Android Studio and the Android SDK
• Expertise in Kotlin and Kotlin Multiplatform (KMP)
• Practical experience with MVVM architecture and Jetpack Compose
• Experience in performance optimization, including memory management, CPU utilization, and debugging
• Solid understanding of mobile application development processes, testing, and configuration management (Agile, Kanban)
• Strong problem-solving and debugging skills
• Upper-intermediate English

Your Responsibilities:

• Develop and maintain Android application and SDKs with a focus on performance, scalability, and security
• Implement unit tests, functional tests, and verification procedures to ensure high-quality code before deployment
• Design and establish communication protocols between mobile applications, cloud services, and external devices (e.g., sensors)
• Integrate external data sources and APIs into mobile applications
• Create and maintain technical documentation in compliance with FDA regulatory standards
• Stay up to date with emerging technologies and implement best practices to enhance development efficiency
• Work closely with the team to identify and address issues in the codebase and improve overall architecture

Will be a plus:

• Experience in healthcare projects and understanding of FDA regulations, QSR (Quality System Regulation), and 21 CFR Part 820
• A degree in Computer Science, Software Engineering, or a related field
• Familiarity with REST, TCP/IP, SIP, RTP, HTTP, and UDP
• Experience with wireless communication standards (Bluetooth, BLE, NFC, WiFi, ProSe)

Що потрібно робити:

• Кросплатформна розробка на Flutter (Android, iOS)
• Cтворення інтерактивних, привабливих та ефективних інтерфейсів; підтримка поточних
• Вивчення та впровадження нових підходів та інструментів розробки

Необхідні знання, досвід та особисті якості:

• Вища освіта
• 3+ роки досвіду роботи
• Професійні знання мови програмування Dart та фреймворка Flutter
• Досвід оптимізації мобільних додатків
• Досвід роботи з системами контролю версій, такими як Git
• Впевнені знання ООП та вміння застосовувати на практиці
• Ефективна робота з колекціями, структурами даних та іншими засобами мови
• Впевнені знання механізмів роботи Flutter-додатків
• Способи управління станом та їх особливості (InheritedWidget, Bloc, Provider)

We are looking for a highly motivated React Native Engineer to design, develop, and maintain cross-platform mobile applications using the React Native framework.

Our Perfect Candidate

• Strong knowledge and experience with such languages and frameworks: JavaScript, ES6, CSS & Flex Box, React, React Hooks, Typescript, strong knowledge with at least one state management lib (Redux / MobX), Native Languages (Java / Kotlin & Objective-C / Swift) will be a plus, react native bridges will be a plus, React Native Animations, writing tests;
• Experience with such protocols, solutions, and APIs: JSON, cross-platform layout, navigation libraries, google maps will be a plus, external (facebook, twitter, etc…) APIs will be a plus, websockets will be a plus, GraphQL;
• Knowledge and experience with such approaches and principles: good algorithm knowledge, callbacks, promises understanding, functional approaches, good OOP knowledge, MVC or FLUX, REST;
• Experience with the following technologies and tools: npm or yarn, Development & Debug tools, one or more libraries for working with http requesting(fetch or axios), git.

Key Qualifications/Responsibilities

• Estimate tasks provided by a Project Manager (PM) or Technology Lead (TL);
• Complete tasks from PM or TL within the estimated time;
• Participate in the SCRUM process;
• Participate in project development;
• Perform technical research;
• Keep technical documentation of the project;
• Prepare reports;
• Communicate with customers;
• Work on improvements of the current project.

IT Craft is looking for a talented React Native developer to join the team working on a new part of the system – the Mobile Application.

Requirements:

• At least 4 years of commercial experience, including:
  • 2 years of experience with React;
  • 2 years of experience with React Native.
• Strong knowledge of JavaScript, TypeScript;
• Understanding of REST, WebSocket, design patterns, mobile-specific features, performance optimization, and app publishing;
• Experience with React Navigation, Redux/MobX, React Query/RTK Query/SWR, Reanimated, Gesture Handler, Victory Native;
• Good understanding of Git, Jira, Bitbucket;
• Commercial experience with Agile methodologies;
• At least an Intermediate level of English.

Will be a plus:

• Experience in native development for Android/iOS;
• Experience in writing native modules;
• Experience with Angular.

Candidate will be responsible for the development, maintenance, and support of entertainment and media applications on the Android and iOS mobile platforms.
This is an opportunity to join a worldwide community of developers that create and deliver fast and innovative media and networked applications for mobile platforms

Requirements

• 5+ years of relevant working experience
• Exceptional knowledge of JavaScript
• Demonstrable experience with React Native and understanding of the ecosystem (i.e. Redux, ES6, CodePush, React Native Encrypted Storage, AppState)
• Knowledge of RESTful APIs
• Experience in React.js
• Hands on experience with the whole app lifecycle from development to deployment
• Knowledge of various tools such as crash reporting, analytics
• Swift/Kotlin knowledge is a huge plus
• Knowledge in Media and FinTech domains is a plus

Job responsibilities

• Application development from scratch
• Technical support for trainee/junior developers
• Strong focus on code quality.
• Estimate tasks for the team
• Ensure high quality of deliverables
• Generate and maintain technical documentation
• Collaborate with product owners to break down high level requirements into understandable pieces of work
• Technical support for trainee/junior developers
• Review team members code, driving best practices across the team

Your Role:

• You will work as part of an agile development team with members from Romania, Germany, and the Netherlands to design, estimate, develop and implement software solutions that satisfy the business requirements
• You will work closely with the team on a comprehensive Android-based product consisting of webviews with backend, REST API, cloud technologies, and native coding. General and in-depth experience with mobile development concepts is a must. Experience with either Kotlin is a must
• To make the best application for our users. Within the app framework team, we are looking to push the limits when it comes to modular development
• You will be part of the Customer Product Services organization, which is focused on delivering high-quality software services for our customers, which is reachable via the web

What you will do

• Developing native code for Android applications
• Analysis of the functional and technical requirements of products and the determination of solution concepts in the environment of mobile applications
• Part of a scrum team
• Implementation through CI/CD pipelines
• Support in creating an end-to-end solution architecture

What you need for this

• Experience as a mobile developer;
• Familiarity with web views and API communication;
• Knowledge of Native languages (Kotlin);
• Experience with following UI/UX design.
• Understanding of front-end languages and libraries (e.g. HTML/ CSS, JavaScript, XML, jQuery);
• Familiar with working methods like Scrum, Scrumban, and related software like Jira, Confluence;
• Organizational, communication skills.

Nice to have:

• A high level of initiative and creativity, a forward-looking mindset, a structured approach to work, and strong commitment. You are eager to continue learning and growing, and you enjoy being part of a team. Thinking outside the box comes naturally to you.
• Higher Education: Degree in computer science, or equivalent education and relevant professional experience

Job Description

• Develop and maintain the Android POS Platform, a suite of 10+ applications and various libraries and modules
• Manage the entire lifecycle of feature development, from initial discussions with product teams, defining requirements, and providing estimates, to coding in collaboration with the team, delivering robust solutions to end-users
• Integrate with 3rd party SDKs and applications
• Advocate and present chosen architectures to the team, playing an active role in the evolution of our tech stack
• Proactively participate in technical discussions to improve existing architecture and developer experience

Requirements

• A self-motivated professional with a strong sense of ownership and drive, with with a minimum of 3 years experience in Android development
• An overall understanding of Android framework, including the Android SDK, Java, and Kotlin
• Familiarity with Kotlin Coroutines, Jetpack Compose, and Android Architecture components
• Good understanding of software design patterns such as MVC, MVP, and MVVM, and experience implementing them in Android applications
• Experience with Dependency Injection frameworks like Dagger or Koin, as well as CI/CD pipelines, build automation and continuous integration tools such as Jenkins or Github Actions
• Experience with UI testing frameworks such as Espresso or UI

We’re looking for a seasoned Android Developer ready to take ownership of feature-rich, scalable mobile applications. This is your chance to work on a long-term, high-impact product that touches thousands of users globally. You’ll collaborate with a cross-functional product team and help us push mobile experiences to the next level.

About the project

Our client is building a cloud-first platform that helps global infrastructure providers manage and scale electric charging networks with ease. The system supports 150,000+ connected devices, processes hundreds of millions of sessions monthly, and is trusted in over 30 countries. It offers modular tools for operations, billing, fleet coordination, and intelligent energy distribution – all built on open, integration-ready standards. The solution enables providers to expand their footprint, reduce costs, and deliver a seamless end-user experience. Its flexibility and scale make it a core engine for future-ready, sustainable transport ecosystems.

Responsibilities

• Build and deliver robust Android solutions, from concept to release
• Implement scalable features based on product roadmap and team input
• Work closely with product managers, designers, QA, and backend developers
• Contribute to architectural decisions and continuously refactor to maintain clean codebases
• Ensure code quality through comprehensive testing and active participation in code reviews
• Monitor app performance and take steps to address issues proactively
• Participate in agile processes and help evolve development workflows

Requirements

• 5+ years of hands-on experience building and maintaining Android applications
• Strong command of Kotlin (preferred) and Java, along with deep familiarity with Android Studio
• Solid foundation in software engineering principles, including asynchronous programming, memory handling, and optimizing app performance
• Experience crafting modern, responsive UIs with weA, with attention to both design detail and usability
• Confident in applying clean, modular architecture – familiarity with patterns like MVVM or similar scalable approaches
• Experience integrating external SDKs and APIs, particularly for real-time data handling and geolocation features
• Working knowledge of DI frameworks (e.g. Hilt or Dagger) to ensure testable and modular code
• Enthusiastic about writing tests – from unit tests to UI testing – and following a test-driven mindset
• Experience with local data storage (e.g. SQLite) and cloud services (e.g. Firebase)
• Confident working with modern network communication tools (e.g. Retrofit, WebSockets) and serialization libraries (GSON, etc.)
• Practical experience using Git-based workflows, and contributing to code reviews and CI pipelines
• Proven ability to integrate AI tools into the development workflow to enhance efficiency, problem-solving, and product quality​
• Strong communication skills and ability to collaborate effectively in English-speaking teams

Will be a plus

• Hands-on experience optimizing Gradle configurations
• Familiarity with mobile use cases involving AI/ML integrations
• Scripting experience (e.g. with Python) to support automation or CI workflows
• Previous involvement in fine-tuning or building custom CI/CD pipelines
• Exposure to modular app architecture or feature-based development approaches