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.