Senior Java Backend Developer / Technical Lead

Company Description

Arηs Group, Part of Accenture, specializes in the management of complex public sector IT projects, including systems integration, informatics and analytics, solution implementation and program management. Our team helps lead clients through digital and information systems design, bringing expertise in a variety of areas ranging from software development, data science and security management to machine learning, cloud, and mobile development.

Arηs Group was acquired by Accenture in July 2024.

Job Description

ARHS Group, part of Accenture, is looking for a Senior Java Backend Technical Lead (m/f) to join one of our client teams onsite in Luxembourg within a European institutional environment.

In this role, you will combine hands-on backend development with technical leadership, contributing to the design, development, and evolution of business-critical applications. Working closely with architects, business analysts, QA, DevOps, and development teams, you will drive technical excellence while ensuring the delivery of secure, scalable, and high-quality software solutions.

THE WORK:

• Design, develop, and maintain robust backend applications using Java and Spring Boot.
• Lead the technical design and implementation of new features and system enhancements.
• Provide technical guidance and mentor Java developers within the team.
• Perform code reviews and promote coding standards, best practices, and software quality.
• Analyse functional and technical requirements and translate them into scalable technical solutions.
• Ensure the maintainability, performance, reliability, and security of backend applications.
• Collaborate closely with Solution Architects, Business Analysts, QA Engineers, and DevOps teams throughout the software development lifecycle.
• Contribute to testing activities, design reviews, and continuous improvement initiatives.
• Support CI/CD processes and participate in deployment and release activities.
• Investigate and resolve complex production issues through root cause analysis and second-line support.
• Drive technical decisions and proactively identify opportunities to improve existing solutions and development practices.

Onsite at client site: This role requires an onsite presence with our clients and partners to support project delivery and strengthen collaboration.

Our roles require in-person time to encourage collaboration, learning, and relationship-building with clients, colleagues, and communities. As an employer, we will be as flexible as possible to support your specific work/life needs.

HERE'S WHAT YOU'LL NEED:

• At least 7 years of experience in Java backend development.
• Strong hands-on experience with Java 17.
• Excellent knowledge of Spring Framework and Spring Boot.
• Solid experience with JPA, Hibernate, and SQL.
• Strong experience designing and implementing RESTful APIs.
• Experience with Apache Kafka or other messaging technologies.
• Experience with Maven, Git, and JUnit.
• Good understanding of CI/CD practices and software delivery pipelines.
• Experience leading technical discussions, mentoring developers, and reviewing code.
• Strong analytical and problem-solving skills with the ability to work on complex technical challenges.
• Fluency in English (written and spoken).

BONUS POINTS IF YOU HAVE:

• Experience within the financial services or banking sector.
• Experience with Azure DevOps.
• Knowledge of Liquibase.
• Experience with SOAP Web Services.
• Familiarity with secure, high-availability, and mission-critical enterprise applications.

As part of our security and compliance procedures, candidates will be required to undergo a criminal background check prior to employment.