Senior Backend Engineer Kotlin

Senior Backend Engineer Kotlin Join to apply for the Senior Backend Engineer Kotlin role at Rivero. About Rivero Established in 2019 and headquartered in Switzerland, Rivero is a fast‑growing European company and a Visa Fintech Partner specialising in streamlining payment operations within the highly regulated payments industry. We focus on offering unique SaaS solutions for fraud recovery, dispute management, and payment scheme compliance. Rivero strives to stand as a front‑runner in the industry, offering best‑in‑class SaaS solutions that combine innovation with deep expertise. We are looking for an ambitious and driven person to join us for the exciting phase ahead. Work at Rivero Our culture is built around the following principles: Act with urgency: We work in fast, iterative cycles to deliver meaningful results quickly, taking initiative and collaborating effectively. Strive for excellence: We take ownership of our work, deliver high‑quality outcomes, and constantly improve to exceed expectations. Embrace growth: We are ambitious, open‑minded, and focused on learning from every challenge. Follow an open‑book management approach: Transparency guides us, sharing insights that help everyone understand Rivero’s progress. Tasks Kajo is a distributed application built around event sourcing and designed to support our customers as well as internal compliance experts. As a senior backend engineer, you will collaborate with our team on the following responsibilities: Expand Kajo with new features and improvements. Maintain the existing codebase, identify pain points, and suggest solutions. Develop tools that help internal users manage operational workload. Lead the design and implementation of new parts of the stack as product requirements grow. Use your experience to enable fellow engineers by sharing knowledge and unique points of view. The Kajo Backend Tech Stack These are the tools, libraries, and frameworks you will work with most: Languages: Kotlin, Go Event Sourcing: Axon Framework (https://github.com/AxonFramework/AxonFramework) Web: Ktor, GraphQL, Hasura Database: jOOQ, Liquibase, PostgreSQL Messaging: NATS (https://nats.io) IAM: Keycloak Other Technologies We Use Frontend: Typescript, Vue.js Backend: Java, Kotlin, Go, Scala, Rust, Haskell Infrastructure: Docker, Kubernetes, Terraform, GitLab CI, Elastic Stack, Prometheus, Traefik, Vault, Google Cloud Platform, Nix Requirements We are committed to delivering high quality, high value products to our customers. We value effective communication and everyday collaboration. We look for an experienced engineer capable of delivering high quality cloud/web applications. Our Requirements Proficiency in Kotlin Experience with distributed web applications Experience with relational databases Experience with designing application APIs Knowledge of git Other Qualifications We Value Experience with event sourcing systems/CQRS Experience with GraphQL Familiarity with Go Familiarity with other infrastructure or DevOps tools mentioned above Benefits Collaborative Workspace: Work from a historic building only two minutes from the Oerlikon station, with a park next door and great food/coffee options. Co‑working spaces are available in select locations. International Startup Culture: Work with a diverse team in a role with ownership and growth opportunities as the company expands. Learn Continuously: Frequent academy sessions hosted by peers on various topics. Social Events: Regular social events and bi‑annual on‑site company events in Zurich. Give Back to the Community: Five extra days beyond your annual holiday allowance for volunteering or community work. Dog‑Friendly Office: Bring your furry friends to the office. Flexible Tech Set‑up: Choose your preferred hardware. Mobile Allowance: Allowance to cover mobile subscription costs. Ownership Opportunities: Participate in the company’s success through stock options. Application Interested? We’d love to learn more about you Please share a few lines about yourself and why you’re excited to join our team, along with your CV. #J-18808-Ljbffr