Kotlin/Java Developer (Integration)

Job Responsibilities Developing new payment integrations and services; Automating and optimizing integration processes; Analyzing external provider documentation, conducting rapid checks, and defining epics and tasks based on Proof of Concept; Participating in the design and development of high-load system architectures; Supporting and improving existing solutions and services; Writing high-quality, test-covered code (unit tests, integration tests); Conducting code reviews; Optimizing system performance and database queries; Analyzing and resolving production incidents and bugs; Processing and resolving requests from technical support and users as part of daily duties; Collaborating with the QA team to ensure the high quality of delivered products; Using AI-tools to accelerate delivery of integration modules and creating internal tools to generate integration code from business requirements; Maintaining technical documentation and writing technical specifications; Assisting in onboarding new developers and ensuring code quality; Definition and formation of technical epics — analyzing existing solutions, identifying opportunities to improve system architecture, performance, and reliability, preparing improvement proposals, and aligning them with the team lead and architect; Participation in the creation of business epics — analyzing requirements, assessing feasibility, and proposing alternative or optimized solutions based on technical expertise; collaborating with analysts and product managers to determine the best implementation approach; Preparing tasks based on approved epics, ensuring proper detailing and alignment with architectural and business requirements; Estimating task completion timelines, participating in sprint planning, and providing accurate technical time and effort estimates.