Senior Software Engineer

New Relic · Barcelona, Spain · Engineering

Posted 2026-09-23

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Your opportunity

We are a global team of innovators shaping the future of observability. Our intelligent platform gives customers real-time insight into complex systems so they can innovate faster and operate reliably in an AI-first world. If you’re excited by high-throughput distributed systems and want to contribute to one of the largest and fastest-growing observability platforms, we’d love to hear from you.

Join a backend engineering team focused on building and operating JVM-based services that ingest, process, and serve massive volumes of telemetry data. You’ll work on high-scale, low-latency systems that power mission-critical observability features used by engineers worldwide.

What you'll do

Design, build, and operate JVM-based microservices (primarily Java and Kotlin) with a focus on performance, scalability, and reliability.

Own services end-to-end: architecture, implementation, deployment, monitoring, on-call participation, and continuous improvement.

Apply strong concurrency and performance practices: asynchronous programming, backpressure, efficient I/O, memory management, and GC tuning.

Build and evolve event-driven systems; work with Kafka for streaming, partitioning, consumer groups, and schema evolution.Instrument services for deep observability (metrics, logs, traces), define SLIs/SLOs, and use e

Experience with Kafka or similar streaming technologies (topic/partition strategy, consumer lag, idempotency, schema compatibility) strongly preferred.

Proficiency with REST/gRPC API design, service-to-service communication, and resilience patterns (timeouts, retries, circuit breakers).

Practical experience with containers and Kubernetes, and with CI/CD pipelines.

Track record of operating services in production: monitoring, alerting, incident response, and postmortems.

Strong communication skills, ability to write design docs, and collaborate across teams; proficiency in rror budgets to drive reliability.

Automate CI/CD, testing, and operational tasks; improve developer productivity with tooling and infrastructure as code.

Collaborate with product, architecture, and cross-functional partners to deliver customer outcomes.

Mentor peers, review designs and code, and contribute to technical standards and best practices.

This role requires

Strong experience building and operating production-grade backend services on the JVM (Java and/or Kotlin).

Solid understanding of distributed systems concepts (consistency, partitioning, replication, fault tolerance) and microservice design.

Hands-on experience with asynchronous and reactive programming (e.g., CompletableFuture, Project Reactor, RxJava, Kotlin coroutines)

Bonus points if you have

Deep JVM performance profiling and tuning experience (JFR, async-profiler, JMH).

Experience with schema registries and serialization formats (Avro, Protobuf), and stream processing (Kafka Streams, Flink).

Familiarity with data stores used in observability stacks (e.g., Cassandra, Elasticsearch, Redis) and their trade-offs at scale.

Experience with OpenTelemetry

Prior technical mentorship or leadership in reliability and performance initiatives.

Please note that visa sponsorship is not available for this position.

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