Circle, Inc. provides innovative technology solutions and services globally to our clients. We believe that success stems from innovation, a commitment to quality, and strong collaboration with our partners. Our offerings have addressed the diverse business needs of organizations across various industries. Our solutions empower clients to reach their objectives with strategic advantages. Our services include: 1. Web Platforms/CRM/ERP 2. Mobile Apps (Android + iOS) 3. Big Data (Data Mining/Engineering, ETL Processes) 4. Remote Resource Technologies. Below are some key technologies we utilize: PHP: Symfony, Laravel, Lumen. JavaScript: Angular, React, Vue, jQuery, Node.js, Loopback, NPM, Gulp, Bower. Python: Django. Design: HTML/CSS, Haml/Slim/Sass, Bootstrap, Material Design. Deployment: Debian, Ubuntu, Ansible, Docker. Servers: Nginx, Apache, HAProxy, DigitalOcean, Amazon AWS. Push Notifications: APNs, GCM, FCM, ADM, WPNs. Databases: PostgreSQL, MySQL, MongoDB, Redis. Monitoring: ELK stack, Prometheus, Grafana. Tools: Load testing with Yandex.Tank and JMeter, Swagger. Additional Technologies: Java Spring, QT, Qt-creator, C#, C++. Architecture: MVC, MVP, MVVM, Clean. QA: Crashlytics (Fabric), Xcode Instruments (Profiler), Selenium, Charles Proxy, ADB, Postman, Virtual Box, Reflector, Visual Studio Test. Environment & Tools: We are always adaptable to client needs and tools, but we do have preferred options listed below. Source Code Hosting: Bitbucket, GitHub, GitLab. Building: Jenkins, Docker. Project Management: Asana, Jira. UI Prototyping: InVision. Design: Adobe Illustrator, Adobe Photoshop, Affinity Designer. Communication: Email, Skype, WhatsApp, Slack, Hangouts. Server and Cloud: Amazon AWS, Digital Ocean. Class Diagrams: ArgoUML.