Xflow

Product Designer

• Create high-fidelity UI designs for product features with a focus on pixel-perfect execution
• Work on UI production tasks — drawing icons, interface elements, states, and variations
• Collaborate closely with product managers, designers, and developers to refine features
• Optional but nice-to-have: conceptual design of sections/features, UX wireframing, and basic motion/animation work

UI/UX Designer

AI Engineer

• Deploy and configure modern text-to-image models (Stable Diffusion 1.5 / XL / 3.x, FLUX, etc.) on cloud GPUs or internal servers
• Integrate and maintain additional modules: LoRA, ControlNet, DreamBooth / fine-tuning tools
• Set up a reliable generation pipeline: queues, batching, logging, monitoring
• Train and fine-tune models / LoRA adapters for company-specific visual styles and use cases
• Collaborate with the art team to prepare and clean datasets
• Maintain a library of models and styles (versions, descriptions, usage examples)
• Configure a convenient workflow for internal teams using existing UIs (Automatic1111, ComfyUI) or develop a lightweight custom web interface
• Create presets and straightforward generation flows, ensuring non-technical team members can achieve consistent results
• Monitor service stability and generation quality
• Optimize performance (model configurations, generation parameters, caching)
• Test new models and features, introducing them when they provide real business value

Customer Support

• Build and lead the in-house support team (hiring, onboarding, training, feedback, performance).
• Set up and optimize support operations: SLA, prioritization, quality control, workflows, and metrics.
• Ensure smooth transition from outsourced support to an internal team without loss of quality.
• Monitor ticket handling quality, maintain documentation, templates, and knowledge base.
• Collaborate with Development, QA, Marketing, Legal, and SMM on issue escalation and user insights.
• Drive process improvements, implement automation and AI tools to increase efficiency.
• Prepare regular support performance reports and present key findings to stakeholders.
• Contribute to product and user experience improvements through data and feedback.

Customer Support Team Lead

• Own the full design cycle — from ideation and research to polished UI ready for implementation.
• Collaborate closely with UX designers, developers, and product teams to design new features and improve existing ones.
• Build scalable design systems in Figma and maintain a consistent visual language across the product.
• Work across a wide range of design tasks — from quick popups to complex UI systems and interaction flows.
• Create prototypes, prepare assets, and support seamless design-to-dev handoff.

Full-stack Engineer

• Design and develop microservices in Go/PHP (REST/gRPC), public and internal APIs
• Develop frontend using TypeScript (React) with a focus on performance and Developer Experience (DX)
• Integrate with external services, develop contracts
• Optimize performance, profiling, reduce latency, and scale systems
• Design database schemas, perform migrations, indexing, and query optimization
• Implement and maintain CI/CD, cloud infrastructure (AWS) with Docker/Kubernetes
• Ensure quality: writing tests (unit/integration/e2e), code reviews, automation of checks
• Ensure observability and reliability: logging, metrics, alerting, tracing
• Participate in architectural design, RFCs/ADRs

Senior Fullstack Engineer

Software Engineer

• 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.

Flutter Developer

Community Manager

• Talk to users in comments and DMs across all social platforms (Facebook, Instagram, etc.)
• Spark conversations, respond to questions, and keep our spaces kind and cozy
• Repost and highlight UGC, interact with fan accounts and creators who love Happy Color
• Moderate posts and discussions in our online Facebook community
• Create and publish weekly posts and monthly activity plans for the community
• Brainstorm ideas, achievements, and challenges to keep users engaged and inspired
• Collect and summarize weekly insights about user mood, trends, and feedback
• Prepare short digests and reports for our Support, Marketing, and Product teams
• Help identify key user stories, popular topics, and emerging opportunities
• Build and maintain relationships with creators, bloggers, and community advocates

Technical Writer

• Maintain a consistent style across both backend and client documentation.
• Create and maintain documentation describing new features.
• Participate in gathering requirements and ensure they are documented consistently.
• Keep existing documentation up to date; immediately update any documents if changes occur.
• Write technical requests in a unified style (e.g., A/B tests, backend configs).
• Second priority: create documentation for existing features that currently lack proper documentation.

Game Engineer

• Implement new features and modify existing ones.
• Communicate and collaborate with other departments, including Backend, Design, QA, Analytics, Marketing, etc.
• Document and record results.
• Integrate and update third-party SDKs.
• Participate in resolving crashes and ANRs reported by the live audience.

Senior Unity Developer

Growth Marketing

• Manage various user acquisition channels (social media, incentivized networks, video platforms) by helping to create, monitor, and optimize UA campaigns.
• Support the development of strategic initiatives by conducting research and testing different hypotheses under the guidance of senior team members.
• Utilize internal and external reporting and analytics tools to gather data and contribute to data-driven decision-making processes.
• Participate in creative testing processes and help track and analyze competitors' creatives to stay informed about trends in ad tech and mobile growth.
• Collaborate with a top-performing product team supported by senior team members and industry partners.

Junior User Acquisition Manager

Marketing

• Design and optimize static visual assets and promotional creatives for mobile app stores and marketing.
• Analyze industry trends, competitor benchmarks, and store creative strategies.
• Design high-quality app store screenshots, icons, and feature graphics tailored for mobile games and apps.
• Create variations at scale to support A/B testing and ongoing optimization.
• Ensure visuals comply with Google Play/App Store/Ad Networks guidelines and best practices.
• Automate the localization and production process for screenshots in multiple languages.
• Manage the upload and versioning of creatives across stores.
• Produce static marketing materials for user acquisition campaigns, social media, and promotional needs.
• Stay up to date with industry trends, competitor benchmarks, and store creative strategies.