Senior Java Backend Engineer - Build FinTech P&L Platforms

QUANTEAM (Groupe RAINBOW PARTNERS); Porto; On-site; EUR 52,000 - 75,000; Full time

Benefits offered by this job

Meal allowance

Health Insurance

Extra holiday: Christmas Eve or New Y­

Access to Quanteam Academy for certs

Elevate Program for professional dev

Job summary

Quanteam, the founding entity of RAINBOW PARTNERS, is seeking a Senior Java Backend Developer to join the Risk department. You will develop backend services with Java/Spring Boot for a platform that loads, certifies, and publishes the bank’s P&L results.

Based in Porto, you will contribute to data integration workflows, utilize OpenShift, SingleStore DB, and Kafka, and participate in an Agile, TDD-driven environment with a focus on scalable, reliable solutions.

Qualifications

• Requires university degree in CS/Software Engineering or related field (min. 4 years of study).
• At least 6 years of Java backend development experience.
• Strong Java and Spring Boot expertise.
• Solid SQL skills with relational databases (SQL Server, Sybase).
• Experience with TDD/BDD automated testing approaches.
• Experience with distributed data tech (Hadoop, HDFS, Hive, Kafka) is valued.
• Knowledge of microservices, containers, ETL, and CI/CD is valued.
• Financial Services domain knowledge is a plus.
• Strong analytical and problem-solving skills.
• Good communication, proactive attitude, and innovative mindset.
• Fluency in English (minimum B2); French a plus.

Responsibilities

• Develop and modernize backend services using Java and Spring Boot.
• Redesign core P&L processing and data integration workflows.
• Work with SingleStore DB, Kafka, and OpenShift as part of platform modernization.
• Analyze requirements and deliver reliable, quality software.

Skills

Java

Spring Boot

SQL

TDD/BDD

Kafka

OpenShift

CI/CD

Microservices

Analytical thinking

English (B2)

Education

University degree in Computer Science or related field

Tools

OpenShift

SingleStore DB

Kafka

SQL databases (SQL Server, Sybase)

Job description

Quanteam, the founding entity of RAINBOW PARTNERS, is seeking a Senior Java Backend Developer to join the Risk department. You will develop backend services with Java/Spring Boot for a platform that loads, certifies, and publishes the bank’s P&L results.

Based in Porto, you will contribute to data integration workflows, utilize OpenShift, SingleStore DB, and Kafka, and participate in an Agile, TDD-driven environment with a focus on scalable, reliable solutions.