Senior Java Backend Developer

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

Who are we?

Quanteam, founding entity of RAINBOW PARTNERS, is a consulting firm specialized in Banking and Financial Services. With more than 1200 consultants across 10 countries, we combine business and IT expertise to support leading institutions in transformation projects.

Our core areas:

• Quantitative Finance
• Risk & Compliance
• Operations & Finance
• Transformation & Organization
• Information Systems.

We are looking for a Senior Java Backend Developer

Join a modernization project within the Risk department, developing a platform responsible for loading, certifying, and publishing the bank’s Profit & Loss (P&L) results.

MAIN TASKS

• Develop and modernize backend services using Java and Spring Boot.
• Contribute to the redesign of core P&L processing and data integration workflows.
• Work with SingleStore DB, Kafka, and OpenShift as part of the platform’s modernization.
• Analyze application requirements and deliver reliable solutions aligned with software development best practices.
• Build and maintain automated tests in an Agile and TDD environment.
• Identify opportunities to improve existing processes, application performance, and maintainability.
• Participate in all stages of the software development lifecycle.

YOUR PROFILE AND SKILLS

• University degree in Computer Science, Software Engineering, or a related field.
• At least 6 years of experience in Java backend development.
• Strong expertise in Java and Spring Boot.
• Solid SQL skills and experience with relational databases, such as SQL Server or Sybase.
• Strong experience developing automated tests using TDD and/or BDD approaches.
• Experience with distributed data technologies, such as Hadoop, HDFS, Hive, or Kafka, is highly valued.
• Knowledge of microservices, containers, ETL processes, and CI/CD is highly valued.
• Previous experience or knowledge of Financial Services is a plus.
• Strong analytical and problem-solving skills.
• Good communication skills, a proactive attitude, and an innovative mindset.
• Fluency in English, with a minimum B2 level required.
• French language skills are a plus.
• Position based in Porto.

WHAT WE OFFER

• A competitive salary defined according to the candidate’s experience and competencies.
• Permanent contract (CTI).
• Meal allowance.
• Health Insurance.
• Extra holiday: Christmas Eve or New Year’s Eve.
• Access to Quanteam Academy for continuous learning and certifications.
• Elevate Program to support professional development and career growth.
• Career progression plan.
• Ongoing follow-up and technical support provided by a Consultant Expert.