Senior Kotlin Developer

Intetics Inc., a leading American technology company specializing in custom software application development, distributed professional team creation, software product quality assessment, and end‑to‑end digital solutions, is looking for a Senior Kotlin Developer to join a long‑term project.

Responsibilities

• Design, develop, and maintain backend services using Kotlin and Java
• Build scalable microservices with focus on performance and reliability
• Participate in architecture design and technical decision‑making
• Work with asynchronous and reactive programming (Coroutines, Flow, WebFlux)
• Integrate systems using Kafka, Redis, and relational databases
• Ensure high code quality through testing and code reviews
• Mentor and support other team members
• Collaborate with cross‑functional teams in English

Required Skills & Experience

• Strong experience with Kotlin (Coroutines, Flow) and Java (Core)
• Deep understanding of JVM, multithreading, and concurrency
• Experience with Spring Boot, Spring WebFlux, Spring Data
• Hands‑on work with PostgreSQL, SQL, JPA / R2DBC
• Experience with Kafka, Redis
• Knowledge of Docker and Kubernetes
• Experience with observability tools: Prometheus, Grafana, Micrometer
• Familiarity with Camunda BPM
• Strong testing background: JUnit, Kotest, MockK, Testcontainers
• Solid understanding of DDD and microservice architecture
• English level: B1 or higher

Nice to Have

• Experience working in distributed teams
• Previous mentoring or tech‑lead responsibilities
• Production experience with high‑load systems

Why Join

• Challenging and technically strong project
• Real influence on architecture and technical decisions
• Professional team with strong engineering culture