Senior Kotlin Developer We are looking for a skilled Senior Kotlin Developer to join our team in building and delivering end-to-end features and services within a modern tech stack. You will play a key role in the full software development lifecycle, from requirements analysis through implementation, monitoring, and deployment. This position prioritizes quality, operational efficiency, and scalability. Responsibilities Design and develop scalable, high-availability, distributed systems and middleware services Write clean, testable, and efficient code utilizing best practices Develop and execute unit and integration tests to ensure software functionality Support continuous improvement by researching new technologies and methods while contributing to architectural reviews Collaborate with developers, product owners, business analysts, QA, and other key stakeholders to deliver robust solutions Troubleshoot and resolve performance bottlenecks and technical issues in production environments Contribute to and adhere to Agile (Scrum) development processes Mentor junior developers and promote coding best practices and efficient development methodologies Build maintainable, flexible, and scalable solutions using appropriate technologies and methodologies Investigate technical challenges and provide innovative solutions in line with project requirements Requirements 3+ years of experience in software development for back-end applications, demonstrating strong coding and debugging skills Background in Java 8 and Kotlin, with expertise in frameworks like Spring Boot, Spring MVC, or Spring Integration Knowledge of relational databases and SQL along with solid database design principles Proficiency in messaging middleware such as Kafka and REST API design Skills in containerization tools like Docker and orchestration systems such as Kubernetes Familiarity with build tools like Maven and distributed systems design principles Experience with performance optimization tools like APM, JProfiler, or JMeter Hands-on experience with cloud technologies and infrastructure, with an ability to use serverless functions if required Understanding of software design patterns and engineering best practices Excellent communication skills and the ability to collaborate effectively with both technical and non-technical stakeholders Capability to thrive in an Agile/Scrum team environment Strong analytical and problem-solving skills to tackle complex system challenges Flexibility to learn and apply new technologies while maintaining attention to detail and self-organization English proficiency at a B1+ level Nice to have Familiarity with distributed tracing and monitoring solutions for production Understanding of serverless technologies and their practical implementation Showcase of security best practices in back-end application development Previous experience working on large-scale e-commerce or transactional platforms