Senior Software Developer

Senior Software Developer
- Java & AWS Cloud

Location:
Luxembourg Language: English; any other language is an asset

Responsibilities:
Backend Engineering
• You will be responsible for building and evolving server-side components and interfaces using modern Java (version 21) and the Spring ecosystem.
• Depending on the use case, you will work with ORM frameworks or lower-level database access approaches.
• You will ensure efficient interaction with relational databases such as Oracle or cloud-based PostgreSQL solutions, while applying solid design principles to deliver secure, resilient, and high-performance systems. Cloud Platforms & Delivery
• You will contribute to the deployment and operation of applications within an AWS environment, leveraging both container-based and serverless services.
• You will define and maintain cloud infrastructure through code to guarantee consistency across environments, and actively participate in automation and delivery workflows. Python & Multi-Stack Contributions
• When needed, you will develop Python components to support automation, data manipulation, or system integrations.
• You will work closely with data-focused teams to enable smooth data flows, transformations, and interoperability between platforms. Teamwork & Operational Support
• You will collaborate with product owners, engineers, and other stakeholders to translate functional needs into technical solutions.
• You will assist in diagnosing production issues, monitoring applications, and supporting users.
• You will also help onboard and guide less experienced colleagues, fostering knowledge sharing and technical excellence. Ongoing Evolution
• You are expected to keep your skills current by monitoring emerging technologies and industry practices.
• You will actively propose enhancements aimed at improving reliability, scalability, and long-term maintainability of systems. Profile:
• Higher education in software engineering, computer science, or a comparable technical field
• Strong background in Java backend development, including the Spring framework and multiple data access strategies
• Solid experience with relational database systems
• Hands-on experience designing and running workloads on AWS cloud services
• Comfortable using Python for scripting, services, or integration work
• Practical experience with Infrastructure as Code tools, particularly Terraform
• Good knowledge of API design, distributed systems, and application security
• Daily use of source control platforms such as GitHub or GitLab
• Previous collaboration with data engineering or analytics teams
• Exposure to artificial intelligence tools or ecosystems
• Familiarity with automated build and deployment processes
• Understanding of container technologies and orchestration platforms
• Cloud certifications are an advantage
• Experience working in iterative delivery frameworks and using project tracking tools
• Knowledge of observability, logging, and alerting solutions
• A genuinely agile mindset focused on cooperation, continuous learning, and shared ownership
• Ability to manage priorities and deliver high-quality work within deadlines
• Strong analytical thinking and attention to detail
• Clear and effective communication skills
• Fluency in English is required; additional languages are a bonus
• Proactive, collaborative, and motivated to continuously improve both systems and ways of working Interested in this opportunity? Feel free to apply or send us your updated CV at anne-catherine.son@cyberr.ai, morgane.zimmer@cyberr.ai and belize.sumbu@cyberr.ai