Jobs Mobile

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 offices in Kyiv or Lviv with stable electricity and Wi-Fi , great — apply right now.

About the project:
Our client is a well-established Unified School Management Platform offering AI-managed, scalable content filtering, Classroom Screen Monitoring, and early threat detection.

Requirements:

• 7-10 years of experience;
• Apple MDM SDK knowledge is a must;
• IOS and MacOS operating system knowledge, along with Apple extensions and logging system;
• Knowing how to build packages for Apple devices ( com.x.x );
• Experience with Swift;
• Experience with Flutter;
• A hacking mind, as somehow you need to know how to navigate the Apple ecosystem and get your app reviewed and approved by Apple;
• Must have submitted and dealt with Apple reviewers extensively.

Responsibilities:

• Support the existing ios and mac os apps, ensure a smooth Apple review process, new features development, and bugfixing.

Role Responsibilities:

- Spearhead the design and development of the company projects iOS applications,

starting from the conceptual phase.

- Collaboratively work within a team, ensuring the delivery of high-quality iOS

applications.

- Provide mentorship and share expertise with team members, aiding in the continuous

improvement of our iOS development practices.
 

Candidate Qualifications:

- A minimum of 5 years' experience in commercial iOS application development.

- Comprehensive proficiency in Swift and familiarity with the iOS ecosystem.

- Demonstrable experience in the design and development of client-server applications.

- In-depth understanding and application knowledge of architectural design patterns.

- Proven experience in successfully publishing iOS applications.

Technical Skills:

- Proficiency in: Swift, SwiftUI, Combine, and Git.

- Familiarity with: Objective-C, UIKit, and RxSwift is highly regarded.
 

Benefits & Conditions:

- Competitive salary 

- A completely remote working environment within a globally distributed team.

- 30-day paid vacation.

- The flexibility of work hours.
 

Selection Process:

- Submission and evaluation of a task to assess technical proficiency.

- A comprehensive interview with our seasoned team to gauge cultural and technical fit.

- Job offer extended to the selected candidate.

DARLY SOLUTIONS is an international IT company specializing in delivering innovative solutions across FinTech, MedTech, SaaS, etc.
With years of experience in web and mobile development, UI/UX design, Quality Assurance, AI, and machine learning, we pride ourselves on creating impactful products that drive success for our clients. Since 2018, we have successfully completed over 250 projects.
Examples of our work across various domains can be found on our website - https://www.darly.solutions/ 

We are looking for a Android Developer to join our team on a freelance basis.

Key responsibilities 

• Analyze existing Android/Java code and third-party libraries
• Estimate effort required to update applications according to new Google requirements (including memory-related changes)
• Identify technical risks and dependencies
• Provide high-level estimations and technical input for presale
• Collaborate with the team on possible implementation approaches

Requirements:

• 3–5 years of experience with Java and Android development
• Experience with improving and refactoring existing applications
• Experience with third-party SDK integrations
• Understanding of Android lifecycle and memory management
• Ability to work with and analyze legacy code
• English level: B1

React Native Developer (Middle, 1+ year)
 

We are looking for a React Native Developer with solid hands-on experience who can independently deliver features and contribute to product development.
 

Responsibilities

• Develop and maintain mobile applications using React Native
• Build scalable and maintainable codebase
• Integrate APIs and third-party services
• Optimize app performance and stability
• Participate in code reviews and technical discussions
   

Requirements

• 1+ year of commercial experience with React Native
• Strong knowledge of JavaScript / TypeScript
• Good understanding of mobile app architecture
• Experience working with REST APIs
• Experience with Git workflows
• Ability to work independently
   

Nice to have

• Experience with Redux / Zustand
• Experience with Firebase
• Experience publishing apps to App Store / Google Play
• Basic knowledge of native development (iOS / Android)
   

We offer

• Challenging and interesting projects
• Growth opportunities within the company
• Flexible working hours
• Remote work
• Friendly and collaborative team

React Native Developer (Junior, 0.5+ years)

We are looking for a Junior React Native Developer who already has some commercial or pet-project experience and wants to grow in mobile development.
 

Responsibilities

• Develop mobile applications using React Native
• Implement UI based on design requirements
• Work with APIs and integrate backend services
• Fix bugs and support existing features
• Collaborate with the team and learn best practices
   

Requirements

• 0.5+ year of experience with React Native
• Good knowledge of JavaScript (ES6+)
• Basic understanding of mobile development concepts
• Experience working with REST APIs
• Familiar with Git
• Ability to learn quickly and take feedback
• English: Pre-Intermediate or higher
   

Nice to have

• Experience with TypeScript
• Familiarity with Expo
• Pet projects or portfolio on GitHub
• Understanding of basic state management (Context API / Redux)
   

We offer

• Mentorship and support from experienced developers
• Opportunity to grow into Middle level
• Flexible schedule
• Remote-friendly environment

We are looking for an experienced Accountant to join our team and manage accounting operations for our LLC. 

The ideal candidate has solid hands-on experience working with American-based companies and is well-versed in US accounting standards and reporting requirements for LLCs.

Responsibilities:

• Prepare and maintain financial statements and quality reports in accordance with US GAAP for a Delaware LLC

• Handle federal and state tax filings (including IRS Form 1065, Schedule K-1, and related forms)

• Manage bookkeeping, accounts payable/receivable, and bank reconciliations

• Prepare quarterly and annual financial reports tailored for US LLC structure

• Ensure compliance with Delaware state regulations and US federal tax requirements

• Coordinate with US-based CPAs and legal advisors as needed

• Assist in budgeting, forecasting, and financial planning activities

• Maintain accurate and organized financial records for audit readiness

Requirements:

• 4+ years of accounting experience specifically with American-based companies

• Strong knowledge of US GAAP, LLC accounting, and Delaware corporate regulations

• Experience preparing and reviewing quality financial reports for US-based LLCs

• Familiarity with US federal and state tax obligations for LLCs (IRS filings, etc.)

• Proficiency in accounting software (QuickBooks, Xero, or similar US-oriented platforms)

• English language proficiency at B2 level or higher (for communication with US partners)

• Attention to detail, strong analytical skills, and high level of responsibility

• Experience working remotely with US clients is a strong plus

What We Offer:

• Fully remote work — work from anywhere

• Flexible schedule

• Competitive salary in USD

• Collaboration with a US Delaware LLC in a growing business

• Friendly and professional team environment

As a Android Developer, you will contribute to the development of modern mobile applications using a contemporary Android stack. You will work closely with experienced engineers, designers, and product managers to build scalable, user-friendly products while continuously improving your technical skills.

This role is ideal for someone who already has hands-on experience with Android development and is looking to grow in a strong engineering environment, deepen their understanding of architecture, and work with modern tools and frameworks.

Key Responsibilities

Mobile Development & Architecture
• Develop and maintain Android applications using Kotlin
• Build UI using Jetpack Compose following modern design principles
• Participate in implementing application architecture (MVVM / MVI)
• Write clean, maintainable, and scalable code following OOP and SOLID principles
• Work with asynchronous programming using Coroutines

API Integration & Data Management
• Integrate applications with backend services using Ktor or Retrofit
• Handle data persistence using DataStore and SharedPreferences
• Implement and maintain reliable data flows within the app

Navigation & App Structure
• Implement navigation using Compose Navigation (Voyager)
• Contribute to structuring modular and maintainable application components

Collaboration & Development Process
• Work closely with team members on feature implementation
• Participate in code reviews and follow team development standards
• Use Git for version control and collaboration
• Communicate effectively with engineering and product teams

What We’re Looking For

Technical Skills
• ~1 year of commercial Android development experience (or strong equivalent practical experience)
• Commercial experience with Kotlin
• Understanding of OOP and SOLID principles
• Experience with Coroutines
• At least 6 months of commercial experience with Jetpack Compose
• Experience with Compose Navigation (Voyager)
• Solid understanding of Android SDK
• Familiarity with MVVM or MVI architecture patterns
• Experience with dependency injection using Koin
• Experience working with Ktor or Retrofit
• Confident use of Git
• Experience with DataStore and SharedPreferences

Nice to Have

• Familiarity with Kotlin Multiplatform (KMP)

Why Join GBSFO

• Work on real products using a modern Android stack
• Opportunity to grow under guidance of experienced engineers
• Supportive engineering culture and knowledge sharing
• Involvement in architectural and technical decisions
• Stable income and long-term career growth

RedCore is an international business group that creates technological solutions for digital markets. Our products and services cover fintech, marketing, e-commerce, customer service, communications, and regulatory technologies.

We are looking for a Team Lead [Flutter]!  

Requirements: 
- Extensive experience with Flutter framework and proven ability to deliver complex, scalable, production-grade mobile applications.
- Expert-level knowledge of Dart, state management approaches (Bloc, Provider, Riverpod, or similar), and mobile architectural patterns.
- Experience leading development in monorepo environments, including managing module interdependencies and coordinating cross-team contributions.
- Strong expertise in implementing and optimizing advanced Flutter animations, transitions, and custom motion design.
- Proven experience with performance optimization: rendering performance, memory efficiency, build size improvements, and network interaction optimization.
- Deep understanding and practical application of modular architecture or clean architecture principles in large-scale commercial projects.
- Experience with analytics tools, push notifications, and in-app purchase integrations.
- Advanced knowledge and hands-on application of SOLID principles and GRASP patterns in system design and codebase structuring.
- Understanding of application lifecycle, networking, CI/CD processes, version control best practices, environment configuration, and mobile debugging tools.
- 5+ years of relevant experience in mobile development, including prior experience in a senior or lead role. 

Responsibilities: 
- Lead mobile application development by defining technical direction, ensuring architectural consistency, and guiding the implementation of high-quality Flutter solutions.
- Develop and maintain complex features by applying advanced architectural principles, reusable component design, and performance-focused engineering practices.
- Oversee the monorepository structure by defining module boundaries, managing shared libraries, and ensuring transparent development workflows across the team.
- Optimize application performance by conducting in-depth profiling, identifying rendering bottlenecks, improving memory usage, and ensuring a smooth user experience across devices.
- Drive the creation and refinement of complex animations by evaluating motion design requirements, supervising implementation quality, and ensuring high rendering performance.
- Collaborate with Product, QA, Backend, and Design teams by participating in planning activities, clarifying requirements, and ensuring effective integration of technical solutions.
- Conduct code reviews by setting quality standards, ensuring adherence to architectural guidelines, and supporting continuous improvement in development practices.
- Mentor and support developers by providing technical guidance, enabling professional growth, and improving the overall performance of the mobile engineering team.
- Report directly to the Team Lead / Engineering Manager and contribute to strategic planning in the mobile development domain. 

Our benefits to you:
☘️An exciting and challenging job in a fast-growing business group, the opportunity to be part of a multicultural team of top professionals in Development, Architecture, Management, Operations, Marketing, Legal, Finance and more

🤝🏻Great working atmosphere with passionate experts and leaders, sharing a friendly culture and a success-driven mindset is guaranteed

🧑🏻‍💻Modern corporate equipment based on macOS or Windows and additional equipment are provided

🏖Paid vacations, sick leave, personal events days, days off

💵Referral program — enjoy cooperation with your colleagues and get the bonus

📚Educational programs: regular internal training sessions, compensation for external education, attendance of specialized global conferences

🎯Rewards program for mentoring and coaching colleagues

🗣Free internal English courses

✈️In-house Travel Service

🦄Multiple internal activities: online platform for employees with quests, gamification, presents and news, clubs for movie / book / pets lovers and more

🎳Other benefits could be added based on your location 

We are a software development agency looking for an experienced React Native developer to place with our client on a long-term project.

The project is a real-time social app with:

• 1:1 video and audio calls (WebRTC)
• Real-time chat (Socket.IO)
• User profiles, friend system, posts
• Existing React Native + Node.js codebase to review and extend

Requirements:

• React Native + Node.js production experience
• WebRTC implementation experience (not just tutorials)
• Socket.IO or equivalent real-time systems
• iOS and Android deployment
• 30+ hours per week availability
• Strong English communication

Engagement: long-term, hourly, remote

At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently looking for a Business Development Executive to join one of our clients' team. If you're looking for an exciting opportunity to grow in a innovative environment, this could be the perfect fit for you.
 

Responsibilities:

• Design, develop, and maintain Android application features.
• Collaborate with cross-functional teams on feature design, system architecture, and delivery.
• Participate in agile practices (discovery, refinement, decomposition, sprint planning, demos).
• Apply Clean Architecture principles and review PRs adhering to community-defined coding standards. Design secure data-storage / transmission flows.
• Set up monitoring dashboards, investigate risks.
• Identify and fix bugs and performance bottlenecks.
• Investigate production issues, perform root cause analysis, and collaborate with backend developers and testers to prevent regressions.
• Ensure code quality through unit testing, UI testing, and code reviews.
   

Job requirements

• 4+ years in commercial Android app development.
• Expert knowledge of Kotlin and modern Android APIs: Retrofit/OkHttp, Coroutines/Flow (plus RxJava for legacy), Jetpack (Compose, WorkManager), Google Maps, FCM, DataStore.
• Experience working with design systems and component libraries in Jetpack Compose.
• Proficiency with RESTful APIs and third-party library integration.
• Strong grasp of offline storage, concurrency.
• Experience with performance tuning, and network debugging.
• Practical experience with Clean Architecture and common patterns (MVVM/MVI) applied in production.
• Understanding of backend-service principles and API design.
• Experience with CI/CD (GitHub Actions, GitLab CI, Gradle), code quality tooling (ktlint, Detekt), feature flags, and large-scale A/B experimentation.
• Ability to write maintainable, testable code with solid unit and UI test coverage.
• Familiarity with secure coding practices and data-driven product decision-making.
• Solid knowledge of Google Play's developer policies and full mobile delivery lifecycle.
• Git proficiency (branching, PRs, code review workflows).
• Experience with collaboration tools (Jira, Azure DevOps).
• Familiarity with design handoff tools (Figma)
• Experience using AI-assisted development tools (GitHub Copilot, ChatGPT, Claude) to accelerate coding, testing, and code review workflows

Applefy, a leading Mobile & Web Development company, is looking for a talented Android Developer to join our dynamic team on an ongoing project. 
This is a fantastic opportunity for a developer passionate about building high-quality mobile applications and wanting to grow their skills in a flexible and supportive environment.

What We Offer:

• Flexible work schedule: Manage your own time and work at your own pace.
• Fully remote: Work from anywhere in the world.
• Comprehensive leave policy: Enjoy all official holidays, 20 days of paid vacation, and 10 sick days without needing a doctor’s note.

Key Requirements:
• Strong communication skills
• Proficiency in spoken English
• 1+ years of experience with Android & Kotlin
• At least two years of experience in product development
• Solid understanding of UI/UX principles
• Keen attention to detail
• A desire to learn and grow professionally

Preferred Qualifications:
• MacBook (ARM processor) & iPhone owner
• Residency in Ukraine 🇺🇦

If you’re ready to take the next step in your career with Applefy, we’d love to hear from you!
 

Applefy - a high-quality Mobile and Web Development company, is looking for a talented Engineer to join our dynamic team on an ongoing project. 
This is a fantastic opportunity for a developer passionate about building high-quality mobile applications and wanting to grow their skills in a flexible and supportive environment.

We are looking for a senior Mobile Security Engineer with strong experience in iOS reverse engineering, application analysis, and security tooling to help assess and strengthen our own applications in authorised environments. In this role, you will analyse application behaviour, API communication, authentication flows, session handling, and device-level signals. 
You will help us better understand abnormal usage patterns, improve detection logic, and strengthen the resilience of our systems against misuse and automated threats. 

What you’ll do: 

Perform static and dynamic analysis of iOS applications Analyse API behaviour, authentication flows, and session management Investigate device and behavioural signals linked to suspicious or abnormal activity Build Python-based internal tools for testing, automation, and analysis Work with Frida, Appium, and related frameworks in controlled environments Support logging, analysis, and tooling with MongoDB and MySQL 

What we’re looking for: 

Senior experience in reverse engineering, iOS security research, or mobile application analysis Strong understanding of APIs, authentication systems, device fingerprinting, and behavioural analysis Experience with Python, automation tooling, cURL-based workflows, and interface development 

Familiarity with Frida, Appium, MongoDB, and MySQL 

Strong analytical mindset with attention to technical detail 

Additional note: This is a long-term role focused exclusively on improving the security, detection capabilities, and resilience of our own applications. 

All work is conducted in authorised, legal, and controlled environments.

Our Customer:

A global technology company developing real-time video augmentation and rendering infrastructure for broadcast and streaming environments.
 

Responsibilities:

• Design and implement a native video playback extension that augments HLS streams at runtime across platforms such as Android (ExoPlayer), webOS, Roku, and others;
• Build and maintain a cross-platform rendering layer using OpenGL for real-time video frame processing and compositing;
• Integrate GPU-based overlays and visual transformations directly into the playback pipeline with strict frame-accurate synchronization;
• Develop device-aware architecture to handle platform-specific decoding, rendering surfaces, hardware acceleration constraints, and performance tuning;
• Integrate external SDKs and APIs alongside an internal AR/graphics processing pipeline;
• Optimize rendering performance, memory usage, and latency under real-time streaming constraints;
• Collaborate with QA and Product teams to validate rendering accuracy, synchronization precision, and cross-device stability.
   

Required experience and skills:

• Strong hands-on experience with OpenGL (mandatory, core skill), including shader programming and GPU pipeline understanding;
• Solid knowledge of real-time rendering concepts (frame buffers, textures, shaders, synchronization, GPU/CPU interaction);
• Experience integrating OpenGL with native video playback surfaces;
• Strong experience with Kotlin for Android development;
• Practical experience with HLS streaming internals and playback customization;
• Strong understanding of video decoding/rendering pipelines and frame timing control;
• Experience with native video players on at least one of the following platforms: Android (ExoPlayer), webOS, RokuTV;
• Experience implementing low-latency video overlays and graphical composition;
• Understanding of hardware acceleration and performance optimization on embedded/TV devices;
• Proven background in full-cycle software engineering (integration, profiling, debugging, optimization);
• English — Upper-Intermediate+.
  
  Working conditions:
  5-day working week, 8-hour working day;

Job Description: 

 
We are seeking a highly skilled and motivated Android AOSP Engineer with deep expertise across the full Android stack — from Hardware Abstraction Layer (HAL) through to the Application layer. The ideal candidate will bring extensive experience in embedded software/firmware development, Android BSP, and AOSP customization. This role offers the opportunity to work with the latest Android versions (preferably Android 14 and beyond), contributing to innovative embedded systems in the critical middleware space between low-level hardware and high-level applications. 

You’ll be part of a cross-functional team developing and optimizing Android-based platforms and delivering robust, scalable solutions. 

Technical Requirements: 

• 8+ years of professional experience in embedded software/firmware development. 
• 2+ years of hands-on experience with Android AOSP development, including deep knowledge of HAL, Android Framework, and System Services. 
• Strong understanding of recent Android versions, features, APIs, and changes (preferably Android 14 or later). 
• Proficiency in Java, C++, and experience modifying code in C. 
• Solid experience in Embedded Linux development (e.g., power management, display drivers, connectivity stacks like Wi-Fi/Bluetooth). 
• Familiarity with Android development tools and workflows, including adb, fastboot, repo, and source control tools such as Git, Gerrit, and GitHub. 
• Good grasp of networking protocols: Ethernet, IP, TCP, UDP. 
• Strong problem-solving skills and a proactive, independent working style. 
• Excellent written and verbal communication skills. 

Nice to Have: 

• Experience with scripting languages like Bash or Python. 
• Debugging and development experience within the Android Framework layer. 
• Familiarity with the NDK toolchain, building native libraries and components. 
• Linux User Space development experience is a strong plus; Linux Kernel development experience is a bonus. 
• Big plus is Treble experience 

 Responsibilities: 

• Work with Android source code and build system: synchronize repositories, manage branches and patches, integrate third‑party components, and resolve build issues and conflicts. 
• Modify and improve Android platform and its components according to project requirements, including customization for specific hardware and product needs. 
• Develop, enhance, and test Android bootloader features, including boot optimization, recovery support, and system diagnostics. 
• Customize and maintain the Linux kernel and embedded components: configure Device Tree, integrate and modify drivers and embedded modules, and debug kernel‑level issues using logs and ADB. 
• Debug and diagnose software and hardware issues: analyze logcat and dmesg logs, use ADB and hardware debugging tools, document root causes and solutions, and track issues in a bug‑tracking system. 

We are looking for a strong Middle React Native Developer with 3+ years of experience to develop and maintain an IoT-based mobile application.

Requirements

Must have:

• 3+ years of commercial experience in mobile development with a strong focus on React Native
• Strong knowledge of JavaScript (ES6+) and TypeScript, including modern React patterns and Hooks
• Hands-on experience with Expo, React Navigation, and state management libraries such as Redux, MobX, or Context API
• Experience working with REST APIs
• Solid understanding of Git workflows and CI/CD pipelines
• Experience of deployment to the Apple App Store and Google Play
• English level - at least Intermediate+ (direct communication with the client)

Nice to have:

• Web development experience with React / Node.js / Java
• Familiarity with AWS environments

Key Responsibilities

• End-to-end development and maintenance of a production mobile app.
• Full management of Apple App Store and Google Play accounts (releases, compliance, certificates, updates)
• Contribute to frontend and backend development across multiple products
• Collaborate with the team on architecture, APIs, and cloud-based services

Project: Our client is a well-established international company with a long history dating back to the 1970s. The company operates in the fire safety and IoT domain, developing and manufacturing hardware devices (panels, sensors, displays) along with complex software solutions such as dashboards, mobile applications, and monitoring systems.

Type: IoT 

Market: Global

Stage: Ongoing product development 

Project team: 1 PM, 1 AQA Engineer

Technical stack: React Native, TypeScript, JavaScript (ES6+), React Hooks, Expo, React Navigation, Redux / MobX / Context API, REST APIs, Git, CI/CD, App Store & Google Play deployment

Work schedule: Full-time working day, the full remote is available.

Interview stages

1. Call with recruter
2. Technical interview
3. Client interview

Our Benefits:

• Projects with modern JS stack (React.js, React Native, Angular, Node.js)
• Strong JavaScript community at the company (90+ developers)
• Work from anywhere (fully remotely or in our office)
• Paid vacations and sick-leaves, additional days-off, relocation bonus
• Wellness: Medical insurance / sport compensation / health check-up + flu vaccination at your choice
• Education: regular tech-talks, educational courses, paid certifications, English classes
• Fun: own football team, budget for team-lunches, branded gifts
• One of the best IT employers in Lviv based on DOU rating