Backend Developer (Kotlin)

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Чем предстоит заниматься

Developing and maintaining a microservices architecture

Optimizing database performance and queries

Configuring monitoring, logging, and alerting

Handling deployment and infrastructure management

Conducting code reviews, mentoring, and designing architecture from scratch

Experience in Backend development for 3+ years

Strong proficiency in Kotlin and Java, including Kotlin data classes, sealed classes, extension functions, scope functions, Coroutines & Flow (structured concurrency, error handling, Flow operators), as well as Java Collections, Generics, and Stream API

Deep understanding of multithreading and JVM internals, including garbage collection, memory model, and performance tuning

Extensive hands-on experience with Spring Framework, including Spring Boot (auto-configuration, custom starters, profiles), Dependency Injection / IoC, Spring Data (R2DBC and JPA), Transaction Management, and Spring AOP

Advanced knowledge of PostgreSQL and SQL, including query optimization, EXPLAIN ANALYZE, indexing, complex queries, window functions, and CTEs

Proven production experience with Kafka, including producers, consumers, partitions, and offsets

Strong expertise in REST API design, including versioning, pagination, and error handling

Solid practical experience with Docker (optimized images) and advanced Git workflows (rebase, cherry-pick, conflict resolution)

Hands-on experience with monitoring and observability tools such as Prometheus, Grafana, and Micrometer, including structured logging, correlation IDs, and alerting best practices

Strong understanding of microservices architecture, including patterns, anti-patterns, high availability, fault tolerance, and scalability

Good knowledge of software design principles, including SOLID, GoF patterns, and DDD basics

Experience with testing practices, including unit testing, integration testing, JUnit / Kotest, MockK, and Testcontainers

Level of English – from Intermediate+ and above

Experience with database migration tools such as Liquibase or Flyway

Experience with Java 17+ features, including records, pattern matching, and sealed classes

Strong knowledge of Spring WebFlux / Reactive programming, including Mono, Flux, and backpressure principles

Experience with Spring Security, including OAuth2 and JWT authentication/authorization flows

Understanding of distributed transactions and consistency patterns

Practical experience with database scaling, including replication, sharding, and partitioning

Hands-on experience with Redis, including caching strategies, pub/sub, and distributed locks

Experience with Kubernetes, including deployments, services, ConfigMaps, and Secrets configuration

Practical experience building and maintaining CI/CD pipelines using Jenkins, GitLab CI, or GitHub Actions

Experience with distributed tracing tools such as Jaeger or Zipkin

Knowledge of event-driven architecture principles and patterns

Understanding of API lifecycle management

Experience with contract testing using Pact or Spring Cloud Contract

Experience with Camunda BPM or similar workflow/orchestration platforms

Background in fintech or banking systems

Andersen cooperates with such companies as Siemens, Johnson & Johnson, AstraZeneca, BNP Paribas, Allianz, Ryanair, TUI, Verivox, Media Markt, etc

For the past four years, our company has been growing annually by 60–100%, and we constantly involve top-notch specialists in our team

Andersen has mentoring and adaptation systems for new employees, and transparent performance review and assessment systems will allow you to determine your development path and plan your growth

The most important thing that we value in our employees is a commitment to continuous learning. The company supports them in this and gives them access to the best educational platforms, seminars, and practices. In addition, for over 19 years, Andersen has assembled a huge knowledge base and established a robust resource management institution

We have been strengthening our expertise since 2007. During this time, we have formed excellent teams with streamlined processes, where you can learn something new from your colleagues every day and enjoy your work

We are a cool young team of like-minded people communicating informally

You'll have a stable and competitive salary and an extensive benefits package

At Andersen, we have many different ways to grow. You can improve as a specialist or a manager, and all your activities will be decently rewarded

Дополнительно

Andersen is hiring a Backend Developer (Kotlin) in Kazakhstan to build scalable backend solutions and support international digital projects across multiple industries

Andersen is a pre-IPO software development company providing a full cycle of services. For over 19 years, we have been helping enterprises and middle-sized firms worldwide transform their businesses by creating effective digital solutions using innovative technologies

Today, we are working with organizations from various parts of the world, including North America, Western Europe, Israel, Australia, and the UAE. Our expertise covers FinTech, Healthcare, Retail, Telecom, Media & Entertainment, Logistics, Travel & Hospitality, eCommerce, and other industries

The project is focused on developing a next-generation business banking mobile application based on microservices architecture. It includes building new features, integrating modern technologies, and preparing the migration of corporate clients from the legacy platform to the new solution