PAIGE/JOBBANK

Mainframe Developer

HerstalPosted 23 Oct 2026ats:recruitee

Are you looking to take the next step in your career and grow within one of Belgium’s leading IT companies? Join KEYES as a Mainframe Developer ! KEYES delivers integrated digital solutions through a unique ecosystem of seven areas of expertise: Infrastructure & Cloud, Cybersecurity, Data & AI, Business Software, Mainframe, Advisory and Staffing. Together, they enable organisations of all sizes to transform, perform and growresponsibly. At KEYES, talents work across domains, contribute to impactful projects and help build the digital future.

Find out more: www.keyes.eu YOUR MISSION You will contribute to application development projects in a mainframe environment as part of our project teams You will carry out technical analysis, development, and unit and/or integration testing of programs and applications in both project-based and maintenance environments Based on functional specifications, you will develop applications in an efficient, testable, and maintainable manner You will develop applications on IBM mainframe systems You will build robust and scalable back-end systems capable of handling high volumes of daily requests You will proactively challenge existing approaches and propose alternative solutions through collaboration and knowledge-sharing with colleagues You will maintain existing applications, implement changes where necessary, and troubleshoot production incidents OUR OFFER Complete salary package A function rich in responsibilities and challenges A team of enthusiastic, professional colleagues in which there is an excellent atmosphere and where expertise is shared Tools and infrastructure that are consistently at the forefront of innovation Personalized career support to help you with your development Many training opportunities and certifications A company with a friendly working atmosphere which is dynamic and oriented towards innovation Fun times – a food truck, barbecue, after-work events, family day!

VOTRE PROFIL You have at least 5 years of experience in application development using PL/I Experience in the insurance sector (life or non-life) is considered a strong advantage Technical skills: PL/I, COBOL, DL/I, DB2, IMS, TSO, JCL, JavaScript, Angular, HTML, Java… You have strong communication skills and are able to work effectively as part of a team You are fluent in French and English; knowledge of Dutch is a significant asset Do you recognise yourself in this description ? Do you want to learn more ? Apply now! You will be contacted shortly What if the mission isn’t an exact match for you ?

Let’s stay in touch ! Sign up, and we may contact you for other future opportunities : https://keyescareers.eu/o/spontaneous-application OUR RECRUITMENT PROCESS is efficient, transparent and fair : #LI-FC1

Skills mentioned
Source: ats:recruitee. Description and metadata as published by the employer or its applicant tracking system on 2026-10-23. The apply link goes to the original source. Paige JobBank does not accept applications on the employer's behalf.