Description
About the job
Driivz, a Vontier company, powers the e-mobility revolution with a market-leading, end-to-end EV Charging and Energy Management platform for global charge point operators and electric mobility service providers.
We offer a scalable, integrated SaaS solution that enables our clients to efficiently manage their networks and provide EV drivers with exceptional charging experience.
Operating in over 35 countries in the US, Europe and Asia, we enable hundreds of millions of events for millions of EV drivers and manage more than 160,000 public chargers (100,000s in roaming).
Our customers include global industry leaders such as EVgo, Volvo Group, Shell, Circle K, Mer, Recharge, Kople, ESB, CEZ, MOL Group, ST1, and eMobility Power.
Join our team to work alongside the most brilliant and disruptive minds that are focused on leading the eMobility industry and building a greener world.
We're looking for a Senior Backend Developer to join our Roaming team, working on a suite of microservices that power CPO and EMSP integrations, party management, and interface logging across our multi‑tenant platform.
What You'll Do
- Design, develop, and maintain reactive microservices using Kotlin, Java, Spring Boot 3, Spring WebFlux, and Kotlin coroutines
- Build and extend integrations based on EV roaming protocols (OCPI, etc.) between CPOs and EMSPs
- Leverage AI‑powered development tools (GitHub Copilot, Claude)
- Work with PostgreSQL, MongoDB/DocumentDB, Kafka, Redis in a reactive, non‑blocking architecture
- Contribute to shared roaming SDKs and internal libraries
- Write high‑quality, well‑tested code with 90%+ coverage (MockK, Kotest, Testcontainers, JUnit 5)
- Collaborate on multi‑tenant architecture
- Participate in code reviews, architecture discussions, and technical decisions
- Help modernize and migrate functionality from a legacy Java monolith to new Kotlin microservices
Requirements
- 5+ years of backend development experience
- Strong proficiency in Kotlin and/or Java
- Solid experience with Spring Boot and the Spring ecosystem
- Hands‑on experience with reactive/async programming (WebFlux, coroutines, etc.)
- Experience with relational DBs (PostgreSQL preferred) and message brokers (Kafka preferred)
- Strong understanding of RESTful API design and microservices architecture
- Experience writing comprehensive unit and integration tests
- Familiarity with Docker and modern container workflows
- Comfort using AI‑assisted development tools
- Strong problem‑solving skills and ability to work independently
Nice to Have
- Experience with EV roaming protocols (OCPI, OICP, eMIP) or the eMobility domain
- Experience with Vert.x reactive clients
- Familiarity with Redis in reactive stacks
- Experience with multi‑tenant SaaS architectures
- Kubernetes/Helm experience
- Gradle (Kotlin DSL)
- Flyway migrations
- Testcontainers for integration testing
Tech Stack
Languages: Kotlin, Java (21)
Frameworks: Spring Boot 3, Spring WebFlux, Kotlin Coroutines
Databases: PostgreSQL (Vert.x PG client), MongoDB/DocumentDB, Redis
Messaging: Apache Kafka (Reactor Kafka)
Testing: MockK, Kotest, JUnit 5, Testcontainers
Build: Gradle (Kotlin DSL), ktlint
Infrastructure: Docker, Kubernetes, Helm
CI/CD: Bitbucket Pipelines, GitHub Actions
AI Tools: GitHub Copilot, Claude, and other AI‑assisted development tools
