H

Senior Backend Software Engineer (Go, Kafka, GraphQL, Ruby)

Full Remote
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Design, develop, and maintain backend services using Golang and Ruby. Build event-driven systems with Apache Kafka and GraphQL APIs. Ensure observability, scalability, and reliability across distributed systems.

Key Highlights
8+ years software development experience required
Full remote position with global HN Services Group
Work with Golang, Kafka, GraphQL, Ruby, and PostgreSQL
Focus on distributed systems, microservices, and observability
Key Responsibilities
Design, develop, and maintain backend services using Golang
Build and integrate event-driven systems using Apache Kafka
Develop and maintain GraphQL APIs, schemas, and resolvers
Work with PostgreSQL data models, schema migrations, and performance optimization
Maintain and improve existing services written in Ruby, including refactoring and optimization activities
Implement and maintain event publishing and asynchronous communication patterns
Contribute to observability and monitoring improvements across distributed systems
Participate in infrastructure-related initiatives using Terraform and Docker-based environments
Ensure high code quality through testing, code reviews, and engineering best practices
Collaborate closely with DevOps, Product, and QA teams
Troubleshoot and resolve performance, scalability, and reliability issues
Provide technical mentorship and guidance to less experienced engineers
Technical Skills Required
Golang Apache Kafka GraphQL PostgreSQL
Benefits & Perks
Full remote work
Nice to Have
Experience with microservices architecture
Experience with cloud platforms such as AWS, GCP, or Azure
Experience with Docker and Kubernetes
Experience with Terraform and infrastructure-as-code practices
Experience with OpenTelemetry, New Relic, Datadog, or similar observability platforms
Experience modernizing or migrating legacy systems
Experience designing and implementing telemetry pipelines
Experience with structured logging and distributed tracing

Job Description

20 years on the Romanian IT market and still growing.

Part of the HN Services Group, with offices in France, Spain, Portugal, and Luxembourg, HN Services Romania is about building real careers, not just filling roles.

What you’ll find here:

Digital transformation projects with real impact

A wide range of technical roles across modern and legacy technologies (yes, COBOL is still very much alive)

Exposure to diverse industries and international environments

Continuous growth through our in-house software development training center (HN Training Institute)

💡We are currently looking for experienced professionals to deliver high-quality, stable, and resilient software solutions.

🔍 RESPONSIBILITIES

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