Junior Backend Developer Java

Paris - France

Yearly Salary: EUR 40000 - 50000

Posted on: 30+ days ago

Vacancies: 1 Vacancy

Job Summary

Context & Mission

We are looking for a curious and rigorous Junior Backend Engineer to help design build and operate our microservices powering the Lefty platform. Youll work primarily with Java (21) and modern JVM tooling build gRPC/Protobuf APIs consumed by our apps and contribute to data-heavy services using Elasticsearch ScyllaDB and MariaDB. Youll collaborate with senior engineers learn best practices and take ownership of well-scoped features from design to production.

Youll join an agile ambitious team that values technical excellence observability and reliability. Youll contribute to services that ingest and process large-scale social data including features leveraging open-source AI models to enrich and classify content.

About the position

Design and implement services in Java: Build well-structured maintainable microservices with clean boundaries and clear domain models.
Define fast typed APIs: Ship and evolve gRPC services with Protobuf schemas. Keep contracts stable and backward compatible.
Search and storage at scale: Model and query data effectively with Elasticsearch for search and ScyllaDB for high-throughput low-latency workloads.
Quality and reliability: Write unit and integration tests participate in code reviews and contribute to resilient observable systems with logging metrics and tracing.
Operate what you build: Help monitor production debug incidents with teammates and propose pragmatic improvements.
Collaborate cross-functionally: Work closely with Product Frontend and Data to clarify requirements and deliver business value incrementally.
Build and test with Bazel: Use Bazel as our build system for fast reproducible and scalable builds and CI. Its a Google-grade toolchain that helps us keep builds hermetic and reliable.

Required Experience:

Junior IC

Context & MissionWe are looking for a curious and rigorous Junior Backend Engineer to help design build and operate our microservices powering the Lefty platform. Youll work primarily with Java (21) and modern JVM tooling build gRPC/Protobuf APIs consumed by our apps and contribute to data-heavy ser...