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.