Full-Stack Developer (Creatio) at kyivstar

We are looking for a Full-Stack Developer (Creatio) About us Kyivstar.Tech is a Ukrainian hybrid IT company and a resident of Diia.City. We are a subsidiary of Kyivstar, one of Ukraine’s largest telecom operators. Our mission is to change lives in Ukraine and around the world by creating technological solutions and products that unleash the potential of businesses and meet users’ needs. Over 600+ KS.Tech specialists work daily in various areas: mobile and web solutions, as well as design, development, support, and technical maintenance of high-performance systems and services. We believe in innovations that truly bring quality changes and constantly challenge conventional approaches and solutions. Each of us is an adherent of entrepreneurial culture, which allows us never to stop, to evolve, and to create something new. What you will do • Develop and customize the B2B CRM platform based on Creatio. • Implement business logic using C# and Creatio platform capabilities. • Develop frontend functionality using TypeScript and Angular (Freedom UI). • Configure and develop Creatio objects, business processes, and UI components. • Integrate Creatio with external systems via REST / SOAP APIs. • Participate in analysis and implementation of business requirements together with • Business Analysts and Product Owners. • Develop and support custom Creatio packages. • Ensure data consistency and correctness across integrations. • Fix bugs and support existing functionality. • Participate in sprint planning, estimations, and backlog refinement. • Create and maintain technical documentation. • Support deployment and release processes. Key requirements • Strong experience with C#, OOP, SOLID principles. • Practical experience with TypeScript and Angular (18 or close). • Understanding of frontend/backend architecture and client–server interaction. • Hands-on experience with Creatio platform development (objects, processes, packages, business logic). • Experience implementing end-to-end features (frontend + backend). • Experience with REST / SOAP integrations, including data mapping and error handling. • Understanding of clean code, layered architecture, and refactoring practices. • Experience working with databases and data models (MS SQL / PostgreSQL). • Ability to debug and resolve issues across different application layers. Nice to have • Experience with complex integrations (API Layer, middleware). • Experience with Freedom UI customization. • Experience with CI/CD pipelines. • Experience in telecom or B2B CRM projects. What we offer  • Office or remote it’s up to you. • You can work from anywhere, and we will arrange your workplace. • Remote onboarding. • Performance bonuses for everyone (annual or quarterly depends on the role). • We train employees: the opportunity to learn through the company’s own library, internal resources and programs from partners. • Health and life insurance. • Wellbeing program and corporate psychologist