We are currently looking for a Flutter Developer for our flagship project, Happy Color.


Key Responsibilities:

Develop and maintain high-quality Flutter applications with a focus on performance, stability, and clean architecture.
Implement adaptive, responsive UI and complex animations with pixel-perfect precision.
Design modular and testable architectures.
Identify and fix performance bottlenecks (scrolling, rendering, rebuilds).
Collaborate closely with designers and backend engineers to deliver smooth UX across iOS and Android.
Continuously improve code quality through reviews, refactoring, and automated testing..


Requirements:

4+ years of Flutter/Dart experience with solid understanding of widget lifecycle, state management, and animation system.
Strong knowledge of Flutter SDK (animations, adaptive UI, rendering, performance tuning).
Proficiency in Dart (async programming, isolates, generics, mixins).
Experience building custom UI components, pixel-perfect layouts, and smooth 60/120 FPS animations.
Deep understanding of Bloc / Cubit / Provider and clean architectural principles (SOLID, Clean Architecture).
Hands-on experience with Flutter DevTools for performance profiling and optimization (scroll, rebuilds, memory).
Ability to integrate Firebase, analytics, in-app purchases, and push notifications.
Understanding of Android/iOS ecosystems and platform channels for native integrations.
Experience writing and maintaining unit and integration tests.

Apply now @iliasik

#hiring #flutter #Jobs #gamedev #vacancy

#CV

Привет! Классный репетитор и преподователь английского в поисках работы. Рассматривает как репетиторство, так и корпоративную работу.
телеграм для связи @big_lungs

#vacancy #onsite #limassol

X-FLOW is a mobile game development company established in 2018. We gained recognition after the release of Happy Color, the most popular digital coloring book and one of the most successful ad-driven mobile apps in the world.
We’re looking for a UA Manager to join a top-performing product - a true leader in its category, supported by a strong and friendly team and deep industry expertise. In this role, you’ll have the freedom and responsibility to manage multiple ad networks, make strategic decisions, and directly influence user acquisition performance.

Requirements:
User acquisition experience of 2+ years in mobile game development industry.
Hands-on experience with at least 2-3 ad platforms (e.g. Meta Ads, Google UAC, TikTok, ASA).
Clear understanding of UA goals and KPIs (CPI, CPA, ROAS, LTV, etc.).
Experience with A/B testing of creatives, audiences, and custom product pages.
Ownership mindset, strong analytical skills, proactivity and adaptability.
Strong skills in communication and stakeholder management.
Awareness of trends in ad tech and mobile growth.
English - B2 (upper intermediate).

Join us and let’s create great content together!
Telegram @iliasik

#vacancy #remote #вакансия #developer #playable #ads

X-FLOW is a mobile game development company established in 2018.
We’re looking for a creative and technically skilled Playable Ads Developer
Key Responsibilities:
• Develop multi-tap Playable Ads and interactive end cards.
• Establish requirements and guidelines for asset preparation.
• Participate in creating asset libraries and templates to optimize production.
• Communicate with outsourcing partners on Playable Ads development (providing consultation, technical requirements, and best practices).
• Automate and optimize technical solutions.
Requirements:
• Understanding of basic game mechanics: timing, feedback, progression.
• Ability to recreate a simplified yet relevant gameplay experience.
• A portfolio of developed playable ads.
• Experience working in mobile game marketing.
Technical skills:
• Confident proficiency in HTML5 / JavaScript / CSS.
• Experience developing playable ads for mobile advertising (Google Ads, Unity Ads, AppLovin, ironSource, Mintegral, Facebook, etc.).
• Understanding the reasons for possible rejections by ad networks and the ability to quickly fix arising problems.
• Knowledge of playable-banner limitations: build size, FPS, loading times.
• Understanding how playable ads work structurally—interactivity, working with versioning for a varying number of clicks.
Working with Graphics and Assets:
• Skills in Spine for creating animations and optimizing them.
• Experience optimizing assets from designers, artists, and animators.
• Experience adapting visuals for different resolutions and aspect ratios.
If you’re interested or know someone who might be a good fit — feel free to reach out on TG: @iliasik

#vacancy #senior #fullstack #engineer

X-FLOW is a mobile game development company established in 2018. We take pride in our diverse and talented team and partners, spread across the UK, Cyprus, the Netherlands, and other regions worldwide.
We are currently looking for a Senior Fullstack Engineer for our flagship project, Happy Color.

Key Responsibilities:
Design and develop RESTful APIs using PHP/Laravel.
Build frontend applications using TypeScript/React with a focus on performance and Developer Experience (DX).
Integrate with external services; define and maintain API contracts.
Optimize performance, perform profiling, and reduce latency.
Design database schemas, handle migrations, indexing, and query optimization.
Contribute to quality assurance: write tests (unit/integration/e2e), conduct code reviews, and automate checks.
Ensure observability and reliability: implement logs, metrics, alerts, and traces.
Participate in designing architectural solutions.

Requirements:
4+ years of experience with PHP, strong knowledge of Laravel (DI, queues, profiling, REST, modularity).
4+ years of experience with TypeScript, strong knowledge of React/Redux Toolkit, routing, build processes, and bundle optimization.
Databases: PostgreSQL/MySQL, Redis; experience with schema design, indexes, and transactions.
Message Queues/Buses: Kafka — experience with event-driven integrations.
Security: OAuth2, JWT.
Understanding of DDD, SOLID, 12-Factor App methodology, and observability (Prometheus/Grafana, OpenTelemetry).

Technology Stack (Core):
Backend: PHP (Laravel), REST, PostgreSQL/MySQL, Redis, Kafka, Clickhouse.
Frontend: TypeScript, React, Redux Toolkit.
DevOps: GitLab CI, Docker.
Observability: Prometheus, Grafana, OpenTelemetry, Sentry.

What We Offer:
Competitive salary and benefits package.
Opportunity to work with a talented and passionate team in a creative and dynamic environment.
Flexible working hours and remote/office work options.
Career growth and professional development opportunities.
A fun and inclusive company culture that celebrates diversity and creativity.
Please send your CV via Telegram: @iliasik