Technical Lead (Java) – Real-Time Railway Traffic Systems

Médiane Système limited; Brussel; On-site; EUR 90,000 - 120,000; Full time

Benefits offered by this job

DKV health insurance

Group insurance

Meal vouchers

Mobility package

Job summary

Médiane Benelux is seeking a Senior Technical Lead (Java) to join a long-term program modernizing real-time control room systems for railway traffic. You will join an IT department responsible for around twenty critical Java applications used to monitor and control real-time railway traffic.

The role is hands-on within an agile Scrum team, focused on design, development, performance, and on-call rotation. 5–10 years of Java full-stack experience and strong communication are required.

Qualifications

• Master's degree in Computer Science or equivalent.
• 5–10 years of experience as a Senior Java Full-Stack Engineer or Technical Lead.
• Proven Agile/Scrum experience; Scrum Master certification is a plus.

Responsibilities

• Act as Technical Lead within a full-stack Java squad.
• Design, develop, and maintain complex real-time applications, including new features and refactoring.
• Ensure performance, reliability, and high availability of production systems.
• Support and coach developers through strong technical expertise.
• Produce and maintain technical and functional documentation.

Skills

Java

Full-Stack Engineering

Agile/Scrum

Leadership

Communication

Education

Master's degree in Computer Science

Tools

Docker

Kubernetes

OpenShift

Jenkins

GitLab

Jira

Confluence

Hazelcast

Tibco RDV

Eclipse RCP

Job description

Médiane Benelux: Career Booster! Since 2017, and with over 35 years of experience in France and Italy, Médiane Benelux is an engineering company specializing in software, electronics, and cybersecurity across key sectors such as Railways, Automotive, Energy, Medical, Aerospace, Space, Telecoms, Industry, and Defense.

What We Offer

• IT consulting and strategy
• Digital transformation and IoT solutions
• Project management and process optimization

As specialists in electronics, development, and embedded systems design, we operate from sensor to cloud.

Why choose Médiane Benelux?

• Human-sized company: Promotes teamwork and collaboration in a dynamic and stimulating environment
• Sharp technical expertise and tailored solutions for each sector
• Talent support: Personalized follow-up, continuous training, and skill development for our employees
• Custom solutions tailored to the specific needs of each client
• Culture of innovation: Participation in innovative and varied projects
• Ecovadis Gold certification: Commitment to equality, well-being, and responsibility
• Human values: Commitment, Respect, Trust, Listening
• "Happy at Work" and "Happy Clients" labels by Choose my Company: A fulfilling work environment and optimal client satisfaction

Job Description

Our client, a major player in the railway infrastructure and real-time traffic management sector, is looking for a Senior Technical Lead (Java) to join a long-term strategic program modernizing real-time control room systems and critical operational software.

Context

You will join an IT department responsible for a portfolio of around twenty business-critical Java applications used to monitor and control real-time railway traffic.

The Program Focuses On

• Improving operational efficiency in control rooms
• Consolidating a central real-time IT platform
• Enabling exception-based traffic supervision
• Strengthening cybersecurity in line with European NIS directives

You will work as a hands-on Technical Lead within an agile/scrum development team.

Main Responsibilities

• Act as Technical Lead within a full-stack Java squad
• Design, develop, and maintain complex real-time applications, including new features and refactoring
• Ensure performance, reliability, and high availability of production systems
• Support and coach developers through strong technical expertise
• Promote clean, readable, and reusable code
• Produce and maintain technical and functional documentation
• Apply internal guidelines, standards, and procedures
• After onboarding, participate in a 24/7 on-call rotation (approx. one week every eight weeks)

Profile / Requirements

Master's degree in Computer Science or equivalent

5–10 years of experience as a Senior Java Full-Stack Engineer or Technical Lead

Confirmed experience in Agile/Scrum (Scrum Master certification is a plus)

Technical Skills

• Strong expertise in Java 17; exposure to Java 21+
• Minimum five years as a Java full-stack engineer
• Good knowledge of: Tibco RDV, Eclipse RCP, Hazelcast
• Hands-on experience with Docker, Kubernetes, OpenShift
• CI/CD pipelines with Jenkins and GitLab
• Experience using Jira Agile, Xray, Confluence
• Understanding of High Availability and Disaster Recovery architectures

Soft Skills & Mindset

• Ability to understand the critical nature of real-time railway systems
• Strong team integration and alignment with values such as kindness, courage, positivity, and reliability
• Excellent communication and presentation skills
• Structured, clear, and concise interactions with stakeholders
• High sense of ownership and long-term commitment

Languages

• Excellent command (C2) of French or Dutch
• Basic knowledge (A2) of the second national language
• Fluent English (C1)

Benefits

• Attractive salary package
• Additional statutory leave days
• Mobility package (car or public transport subscription)
• DKV health insurance
• Group insurance
• Meal vouchers
• Eco-vouchers
• etc