Senior Backend Engineer: Kotlin Microservices on OpenShift

dentsuaegis; Zürich; Vor Ort; CHF 140.000 - 170.000; Vollzeit

Benefits dieser Stelle

25 days holidays

Volunteer days

Mental health days

Employee assistance program

40-hour week

Flextime

Home office

Ergonomic office

Pet friendly offices

Learning allowance

Benefits platform

Referral bonus

Workation

Team events

Zusammenfassung

Merkle, a dentsu company, is seeking a Senior Backend Engineer to strengthen the service layer of an e-banking platform. You will design, build, and operate reliable microservices in Kotlin with Spring Boot, integrated via Kafka and deployed on OpenShift, owning APIs end-to-end from design to production observability.

You will mentor teammates, review code, and contribute to security, data models, and performance tuning for PostgreSQL and MySQL, while collaborating with German-speaking teams in

Qualifikationen

• 5+ years of backend engineering experience.
• Proficiency in Kotlin.
• Strong hands-on experience with Spring Boot (Spring MVC, Security, Data JPA, Cloud, Actuator).
• Solid Apache Kafka experience including Kafka Streams, Schema Registry, and exactly-once semantics.
• Proficiency with PostgreSQL and MySQL: data modelling, query plans, replication, and connection pools (HikariCP).
• Practical experience with Kubernetes or OpenShift.
• Knowledge of OAuth2/OIDC and backend security fundamentals.
• Proficiency with Git and CI/CD practices.
• German B2+, primary language for team communication.
• English business proficiency for technical standards and international tooling.

Aufgaben

• Design, develop, and maintain secure, scalable backend services and APIs using Kotlin and Spring Boot.
• Build and operate event-driven integrations via Apache Kafka including producers, consumers, Kafka Streams, and Avro schemas with exactly-once semantics.
• Own data models, query optimisation, and schema migrations across PostgreSQL and MySQL.
• Integrate services with observability, CI/CD, and DevOps tooling; support deployment and monitoring on OpenShift/Kubernetes.
• Apply security best practices in the realms of OAuth2/OIDC, authentication, authorisation, and encryption.
• Conduct code reviews, uphold engineering standards, and mentor junior engineers.
• Produce high-quality technical documentation covering design, implementation, and API contracts.

Kenntnisse

Kotlin

Spring Boot

Apache Kafka

PostgreSQL

MySQL

Kubernetes/OpenShift

OAuth2/OIDC

Git / CI-CD

German B2+

English business

Ausbildung

Bachelor's degree in CS/IT

Tools

Flyway

Liquibase

Spring Cloud

OpenShift

Jobbeschreibung

Merkle, a dentsu company, is seeking a Senior Backend Engineer to strengthen the service layer of an e-banking platform. You will design, build, and operate reliable microservices in Kotlin with Spring Boot, integrated via Kafka and deployed on OpenShift, owning APIs end-to-end from design to production observability.

You will mentor teammates, review code, and contribute to security, data models, and performance tuning for PostgreSQL and MySQL, while collaborating with German-speaking teams in