Senior Kotlin Backend Engineer

Our client is one of the leading meal kit companies. They're providing 111 million meals to 4.2 million households worldwide in 14 countries across 3 continents. From procurement tools to conversion rate optimization, live pricing tools, payment services and add-on upselling features, company works on a wide variety of challenging problems.

Now project is focused on creating internal tools for making supply chains more efficient and productive. There are some new incoming projects related to improving processes of comparing orders from the ordering tool (OT), goods received from the FCMS, and invoices from vendors. Some regions have developed stand-alone tools (i.e. Shark in AU), however, those tools do not scale company-wide and do not enable finance teams to work within the tools they are already using (i.e. Oracle).

Requirements:

• Strong expertise in Kotlin with hands-on commercial experience.
• Deep understanding of Gradle and ability to implement best practices.
• Strong foundation in Java or Scala.
• Experience working with event-driven architectures using Kafka.
• Proficiency in stream processing and Kafka Streams Processor API (a major plus).
• Familiarity with Docker and Kubernetes for container orchestration.
• Strong knowledge of CI/CD methodologies and DevOps practices.
• Hands-on experience with TDD, BDD, and DDD in distributed architectural patterns.
• Expertise in end-to-end development, including unit, integration, and functional testing.
• Strong knowledge of relational and document databases (PostgreSQL, MySQL, MongoDB).
• Experience working within microservices architecture using Kotlin and Java.
• Problem-solving mindset—ability to improve existing solutions rather than opt for full rewrites.
• Strong communication skills—able to work effectively in a collaborative team environment.
• Experience in handling complex challenges and optimizing existing systems.
• Upper-intermediate English proficiency to ensure clear communication.

Responsibilities:

• Take ownership of the architecture, design, development, deployment, and operations of microservices, implementing DevOps practices.
• Collaborate closely with Product Owners, Frontend Engineers, Designers, and Business Intelligence teams.
• Act as a mentor and provide technical leadership to mid-level engineers.
• Advocate for best practices in coding, Gradle usage, and optimization strategies.
• Identify and resolve inefficiencies in the existing codebase without requiring complete rewrites.
• Work with state-of-the-art technologies like Kafka, RabbitMQ, Spark, Kubernetes, Docker, Terraform, Istio, and more.
• Maintain a focus on incremental improvements to enhance system performance and maintainability.