Ruby on Rails Engineer
Sowelo Consulting sp. z o.o. sp. k.
AWSHerokuJavaScriptjQueryMySQLRubyRuby on RailsTerraform
Senior Backend Engineer – Java
Beyond
contract
Posted on:
Location Type: Remote
Location: Remote • 🇵🇹 Portugal
Visit company websiteJob Level
Senior
Tech Stack
ApacheAWSCloudDistributed SystemsDockerGoGoogle Cloud PlatformGraphQLJavaKafkaKubernetesMicroservicesNoSQLPrometheusScalaSpringSpring BootSpringBootSQL
About the role
- Lead the architecture and evolution of scalable, high-performance Java backend systems for personalisation, including data ingestion, profile management, recommendation services, and dynamic content delivery.
- Utilize frameworks like Spring Boot, Apache Kafka for messaging, and RESTful API as well as Backend-for-Frontent (GraphQL) design principles.
- Drive cross-functional initiatives to integrate modern personalisation technologies, such as real-time behavioral analytics and A/B testing frameworks, using Java-based APIs and microservices.
- Define strategies to enhance the performance, reliability, and observability of personalisation services, ensuring low-latency, high-availability systems through Java optimizations and monitoring tools like Micrometer or Prometheus.
- Design and implement Java frameworks for evaluating personalisation effectiveness through both offline metrics and live A/B experimentation.
- Champion engineering best practices in Java development and mentor engineers across teams, raising the bar for code quality and system design.
- Shape long-term technical direction by staying ahead of trends in distributed systems, Java ecosystem advancements, and personalisation technologies—and bringing these innovations into production.
Requirements
- Degree in Computer Science, Engineering, or a related technical field.
- 8+ years of experience in developing large-scale java systems.
- Extensive hands-on experience working with content from personalisation and recommendation engines.
- Familiarity with technologies such as Apache Beam, Pub/Sub, and other large-scale data processing frameworks crucial for personalisation at scale.
- Expertise in backend development, with knowledge of Scala or Golang a plus, to build robust and efficient recommendation systems.
- Proficiency with both SQL and NoSQL databases, to manage and query data for personalized experiences.
- Demonstrated experience building robust APIs (REST, GraphQL) and operating in modern cloud environments (GCP, AWS), using Kubernetes, Docker, CI/CD, and observability tools.
- Proven ability to influence engineering direction across teams and functions.
- Strong communication skills and the ability to align diverse technical stakeholders around a cohesive vision.
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard skills
JavaSpring BootApache KafkaRESTful APIGraphQLA/B testingSQLNoSQLKubernetesDocker
Soft skills
leadershipcommunicationmentoringinfluencecollaboration
