PL/SQL Developer (M/F)

Since its creation, KLANIK has set itself the mission of combining technological expertise and authenticity.

This bold bet, born in Marseille in 2011, in France, has transformed into an international adventure that today includes more than 800 employees, locations in 10 countries, and innovative subsidiaries. In 2026, we will join the ALTEN group, a global player in engineering and digital services.

Our role: to recruit the best talents & connect them to our clients to support them in their digital projects. KLANIK is an IT consulting company structured around 5 expertise poles: Data & IA, DevOps Cloud Infra, Cybersécurité, Software, Produit Agilité Pilotage.

Our 800 talents have varied profiles: tech (our expertise poles), operational (sales and recruitment functions) and support.

Beyond professions, KLANIK cultivates a deeply human model that transcends borders: from Belgium to Colombia, our values resonate. A culture based on sharing, high standards, and benevolence - a collective where everyone can find their place. Our subsidiaries are evidence of this:

• Klanik Esport: Esport club & gamification agency;
• Korner: tech startup incubator;
• Kampus: Qualiopi certified training organization
• l'Act'In Klanik, roles that allow our employees to enrich their experience and live their passions, beyond their missions.

Our culture is summarized by this sentence, often placed under our logo: Human-Made Technology. Tech, yes, but human tech, which spreads a model where everyone's authenticity is the priority.

KLANIK, as a mission-driven company, believes in the strength of diversity and inclusion. Our recruitment is based on skills, without distinction of origin, age, or gender, and all our positions are open to people with disabilities. We are convinced that the diversity of our teams e

The position:

We are currently supporting a major account recognized in the energy and services sector, engaged in a vast program to modernize its Information System. This strategic program aims at the development and evolution of critical solutions with high data volumes, used by a large number of users and subject to high requirements for performance, reliability, and security.

In this context, we are looking for a senior PL/SQL Developer to work on projects with high technical and functional stakes, at the heart of business systems.

Your main missions:

• Integrated into a multidisciplinary project team, you will intervene in the entire application lifecycle:
• Design and develop new PL/SQL functionalities in complex environments with high data volumes
• Participate in the analysis of functional needs in connection with the business teams
• Optimize the performance of existing processes (complex queries, tuning, volume management)
• Write and maintain technical documentation
• Ensure corrective and evolutionary maintenance of applications
• Perform unit tests and contribute to the overall quality of deliverables
• Participate in the deployment, production launch, and post-production support phases
• Regularly exchange with project teams, architects, and other developers to ensure the consistency of the implemented solutions

Required technical skills:

• Oracle databases
• Complex PL/SQL developments
• High volume and high criticality environments
• Structured project methodologies (V-cycle, agile depending on the projects)-
• Query optimization and performance tuning
• Good level in technical English

#LI-FF1

Profile sought:

• Master's degree in computer science (or equivalent experience)
• Minimum 4 years of experience on PL/SQL development projects
• Ability to evolve in demanding, high-volume contexts