Вакансии Mobile Developer / Engineer

The AI-driven SaaS platform developed by our client, which is a worldwide leader in the ad-tech and comparison sector. Its adaptable solution empowers advertisers by pinpointing high-intent audiences through advanced big data analytics. It spans various industries, delivering predictive insights and data-backed marketing strategies designed to drive growth. With its robust capabilities, the platform enables brands to enhance their marketing effectiveness, optimize customer engagement, and maximize conversion rates.

About the Role:

We’re looking for a passionate Senior Flutter Developer to help shape the future of an innovative get-paid-to platform that is being developed from the ground up. As an early team member, you’ll have unprecedented influence on our product direction while working remotely with our tight-knit, collaborative team.
This is a unique opportunity to be part of something big from its early stages – perfect for a Flutter Developer who thrives on autonomy, loves seeing their work make an immediate impact, and wants to grow alongside a promising startup.

Key Responsibilities:

• Drive the mobile development, focusing on building robust and scalable solutions from scratch.
• Independently analyze project requirements, define the implementation strategy, and oversee the end-to-end mobile development process, from idea to deployment.
• Ensure the mobile application is responsive, fast-loading, and accessible across various devices and platforms, maintaining scalability to support an expanding user base.

Required Competence and Skills:

• 4+ years of experience with Dart and Flutter
• 6+ years of experience in mobile development (iOS/Android)
• Solid understanding of mobile UI/UX principles and responsive design
• Hands-on experience with state management solutions such as BLoC, Riverpod, GetX, or Provider
• Proven track record of integrating mobile applications with GraphQL and REST APIs
• Proficient in native Android and/or iOS development
• Advanced understanding of performance optimization techniques, debugging, and testing
• Experience with tools for CI/CD, code signing, and deployment to App Store / Play Store
• Familiarity with Firebase or similar BaaS platforms

Nice-to-Have Skills:

• Knowledge of unit, widget, and integration testing frameworks (such as Mockito and Flutter Driver)
• Practical experience using app monitoring and crash reporting tools (like Sentry and Firebase Crashlytics)
• Experience working with platform channels (native bridging)
• Understanding of native mobile development using Kotlin or Swift
• Experience with serverless architectures and cloud platforms (e.g., AWS Amplify, Google Cloud Functions)

We are looking for a Front-End/Mobile who will define the technical vision, design complex systems, and make key architectural decisions while leading development.

Responsibilities:

• Lead the design and implementation of scalable architectures and integrations.
• Take ownership of technical decision-making and engineering strategies.
• Collaborate with Western clients, translating business requirements into tech solutions.
• Balance 70% Tech / 30% Management, overseeing both development and leadership aspects.
• Ensure problem-solving is a priority rather than process administration.
• Participate in evening calls with US-based stakeholders.

Requirements:

• Strong experience in Frontend (React, JavaScript) and Mobile (React Native, Flutter) development.
• Proven track record in Solution Architect, CTO, or Project Lead roles.
• Hands-on experience in designing complex, scalable architectures.
• Solid understanding of cloud infrastructure (AWS, GCP, or Azure) and microservices architecture.
• Experience with DevOps practices, CI/CD pipelines, and containerization (Docker, Kubernetes).
• Strong knowledge of API development (REST, GraphQL) and database design.
• Ability to manage teams and development processes, ensuring smooth project execution.
• Excellent communication skills for working with business stakeholders.
• Proactive leadership, independence, and the ability to take full ownership of technical decisions.
• Strong problem-solving mindset, with a focus on delivering results.

Join Preply’s AI Teams and help us power people’s progress through life-changing learning experiences. We’re on a mission to combine the magic of the best tutors with cutting-edge AI to create personalized journeys that keep learners motivated and inspired. Together, we’ll transform how students expand their vocabulary, master conversational fluency, and deepen comprehension - unlocking their full potential and sparking a lifelong love for learning. Are you ready to make an impact? Let’s redefine education!

What you’ll be doing:

• Develop high-quality, scalable, and reliable features for Preply mobile applications using React Native and launched in our A/B experimentation framework.
• Collaborate with cross-functional teams, including UX designers, product managers, and other engineers, to deliver innovative solutions that empower our learners and educators.
• Share your knowledge and expertise with the team and continuously learn from others to foster a culture of continuous learning and growth.
• Write clean, maintainable, and efficient code that sets the standard for excellence, contributing to the overall performance and code quality
• Participate in code reviews and ensure code quality to maintain our high standards.
• Continuously improve software engineering practices and methodologies to stay ahead of the curve and deliver value to our users.

What you need to succeed:

• 5+ years of experience in mobile application development with at least 2 years of experience in React Native development.
• Proficiency in JavaScript/Typescript and experience with popular React Native libraries (e.g. Reanimated, Apollo Client, Expo, React Navigation).
• Commitment to excellence and problem-solving skills to debug complex issues.
• Great communication skills and ability to collaborate with cross-functional teams to deliver results.
• Experience with agile software development methodologies to help us move fast and deliver value.
• Experience writing unit and e2e tests

As an iOS Developer, you will be responsible for design and development of Viber iOS client. We offer many interesting and challenging tasks that will allow you to extend your technical abilities delivering the product of the highest quality to our users.
The ideal candidate is interested in improving our users’ experience and wants to make a positive impact on the team.

Responsibilities:

• Development of new features of Viber app.
• Improve code quality through writing unit tests and performing code reviews.
• Improve quality of application and bug fixing.
• Applications optimization and Code refactoring.

Requirements:

• At least 5 years of production mobile software development experience;
• Proficient in Objective-C/Swift and iOS development;
• Experience collaborating with multiple cross-functional teams including support, product management, developers;
• Expert in Object-Oriented programming, algorithms, design patterns, multi-threading;
• Experience in Unit Testing;
• Strong communication skills;
• Intermediate spoken level of English.

We are looking for someone with more than 2 years of experience in mobile development.

Customer:

Work in the Innovation Lab of a large Canadian financial institution. The innovation lab is the fuel of creativity behind technologies that are the power of the large Canadian financial institution. Great team of software engineers, data scientists, product managers who have been creating startups and solutions from scratch. The Innovation Lab encourages our software engineers to follow their creativity within a working community where there is the freedom to both try new things and to grow.

Responsibilities:

• You'll be responsible for building mobile applications and their underlying SDKs that can be reused in other applications
• Work independently and as a team member to research and develop products
• Work with the innovation team to develop end to end features across cloud, mobile, and web infrastructures
• Participate in code reviews, pair programming, and other activities in order to promote mastery of software engineering practices
• Regularly communicate status to development leads, project managers, and management staff

Requirements:

• 2+ years of experience with JS and React Native;
• Validated experience in building web applications for mobile devices;
• Understanding of object-oriented design, client-server architecture, and relational database design;
• Knowledge of mobile architectures and best practices;
• Upper-intermediate level of English or higher;
• Strong communication skills.

We are looking for a Frontend Developer to become a part of our team. If you have a desire to work on an interesting project with developers all over the world, we are waiting for your CV.

Tech stack: JavaScript, React, Next.js, Redux

Responsibilities:

• Develop a customer-facing application with clean and efficient code.
• Building an app architecture.

Must have:

• Experience with React, React Native - 3+ years;
• Experience writing high-performance, reusable code for UI components;
• English level - Intermediate.

Will be a plus:

• Experience with other Frontend frameworks.

Soft skills:

• Proactivity;
• Great communication skills.

We are currently seeking a talented Flutter Developer (mid-level or higher) to join our team for an exciting new project. Our client, based in Costa Rica, is developing an innovative mobile dating app designed to help users find their soulmate through zodiac sign compatibility.
The development of the app is already underway, and we are now looking to expand and enhance its functionality. This is a great opportunity to contribute to a unique project and deliver a memorable user experience.

What you have to deal with

• Development of project functionality;
• Onsite planning and estimation;
• Taking major architectural decisions, based on market best practices and PoCs.

What we expect from you

• 3+ years Android/iOS experience, 1-2+ of them with Flutter;
• Solid understanding of mobile apps development principles;
• Version control tools experience (particularly Git).

Will be a plus

• Experience with MobX or BLoC.

People who work at Perpetio care about the success of the company and the product they make. When our apps become popular - it's an achievement for the whole team. It's a true joy to see app or game being used by someone on a bus or train :)
Our people think ahead, show ideas and initiative. And we as a company can entrust them a responsibility. That is why we are looking for people who are professionals and can work without micro-management. People who get things done.

Responsibilities:

• Developing and maintaining Flutter applications;
• Working with the server team and participating in API development.

Requirements:

• Practical experience with Flutter;
• Experience in Dart;
• Good understanding of OOP/SOLID principles;
• Experience with app state management (ScopedModel, Provider, BLoC, etc.)
• Experience of working with Git;
• Experience with RESTful API;
• Upper Intermediate English.

Will be a plus:

• Previous experience in Android /iOS application development, using one or more of the popular programming languages: Java, Kotlin, Objective-C, or Swift;
• Experience with SQL Database;
• Don’t hesitate to ask a lot of questions;
• Experiment with new technologies in your spare time;
• Github/bitbucket account with own code.

Project description:

You will join quite a challenging project with the opportunity to improve the current product. You will be responsible for technical decisions, mobile team coordination, code review, and root-cause analysis. In addition to development, you will also be involved in active communication with stakeholders, responsible for building project roadmap and mobile team facilitation in problem-solving.
We are offering a complex product, challenging tasks, a strong team, and opportunities to grow both technically and as a leader!

Project stack: JavaScript, Typescript, Vue2.js, Java11, Spring Boot, Maven, Git, MongoDB, Swagger, Linux, Docker, Kubernetes, Helm, Kibana, Azure Web Services, Azure DevOps, GitHub.
React Native: Redux/Mobx, Authentication, Notifications;
Project team:Lead Developer, 2 Back-end developers, 1 Front-end Developer, 1 mobile developer, 5 QA Engineers, DevOps, UI/UX Designer, Project Managers, 2 Business Analysts.

Requirements:

• 5+ years of commercial experience with React Native development.
• Expert-level knowledge of TypeScript.
• Strong experience with state management solutions (Redux/Redux Saga/Toolkit, MobX).
• Proficiency with WebSockets and real-time communication tools.
• Familiarity with offline-first architecture and data synchronization techniques.
• Strong understanding of mobile app lifecycle management, including App Store/Play Store submission, versioning, and post-release monitoring.
• Advanced knowledge of monitoring and analytics tools (e.g., Sentry, Firebase) for proactive issue identification and resolution.
• Experience with alerting systems and proactive monitoring practices to track and resolve real-time issues effectively.

Would be a plus:

• Knowledge of native iOS (Swift) or Android (Kotlin) development.
• Familiarity with NoSQL databases (MongoDB).
• Exposure to Node.js for mobile-oriented APIs.
• Proficiency with CI/CD pipelines.

Soft Skills, Leadership & Mindset:

• 1+ years as a Tech Lead, mentoring and leading small teams.
• Collaborative mindset, with the ability to effectively communicate with Product Owners and developers, ensuring alignment on sprint goals and project priorities.
• Strong written and verbal communication skills in English (Upper-Intermediate level or higher).
• Proven ability to take ownership of the mobile app tech roadmap, proactively identifying and mitigating technical risks.
• Strong decision-making skills to evaluate and recommend effective technical solutions.
• Willingness to challenge the status quo and continuously improve app monitoring, alerting, and quality standards.
• Strong knowledge and understanding of Agile principles and frameworks, especially Scrum.

Responsibilities:

• Development of new functionality and features for project;
• Build a technical roadmap for the project and implement it;
• Take part in code reviews;
• Develop production-ready mobile applications;
• Follow/adjust/introduce established development practices and processes;
• Coordinate with team and business analysts to determine functionalities and conduct an analysis of business requirements;
• Create and update technical documentation;
• Investigate the cause of system issues and provide solutions;