Backend Engineer (Java) — Scalable Systems, Global Impact

TSED UNIPESSOAL; Porto; On-site; EUR 42,000 - 56,000; Full time

Job summary

Sportsbet Blip is seeking a Backend Engineer to join our agile team. You will develop and maintain Java-based services, contribute to a high-concurrency platform, and work across the full software lifecycle, including tests and CI/CD.

You'll collaborate with product owners, implement scalable solutions using Kafka, Cassandra, and other tech, and help deliver value to millions of users globally. Fluency in English and Portuguese is valued.

Qualifications

• Minimum 3 years of backend Java experience (Java 8+).
• Experience with Scala, Kafka, Akka, Cassandra, Zookeeper, RabbitMQ or similar.
• Experience with high concurrency/high transactional/highly available platforms.
• Familiarity with SOAP and REST client-server protocols.
• Knowledge of design patterns and reusability practices.
• Strong communication in Portuguese and English; team player.

Responsibilities

• Develop and maintain backend services across full software lifecycle.
• Write unit, component, and integration tests; participate in CI pipeline.
• Collaborate with Product Owner to gather requirements and provide solutions.
• Document implemented solutions and software design decisions.

Skills

Java

Scala

REST

SOAP

High concurrency

Distributed systems

Unit testing

Soft skills

Tools

Kafka

Akka

Memcached

Apache Storm

Apache Cassandra

Zookeeper

RabbitMQ

Job description

Sportsbet Blip is seeking a Backend Engineer to join our agile team. You will develop and maintain Java-based services, contribute to a high-concurrency platform, and work across the full software lifecycle, including tests and CI/CD.

You'll collaborate with product owners, implement scalable solutions using Kafka, Cassandra, and other tech, and help deliver value to millions of users globally. Fluency in English and Portuguese is valued.