Software Solution Engineer

OneTech Solutions BV; Brussel Hoofdstad; On-site; EUR 70,000 - 90,000; Full time

Benefits offered by this job

On-site in Brussels

4-day work week option

Job summary

OneTech Solutions BV in Brussels is seeking an experienced IBM i (AS/400) Software Solution Engineer for a long-term on-site assignment. The role requires at least 3 years of software development experience, with strong IBM i expertise and the ability to develop, maintain, and improve business-critical applications.

The position combines technical development, business analysis, production support, and stakeholder collaboration, with mandatory on-call rotations and a four-day on-site schedule

Qualifications

• Minimum 3 years of professional software development experience.
• Experience in business requirements analysis and technical design.
• Strong troubleshooting and incident resolution skills.
• Willingness to work 100% on-site in Brussels.
• Experience with Agile/Scrum methodologies.

Responsibilities

• Design, develop, test, deploy, and maintain business-critical IBM i applications.
• Gather requirements and translate into technical solutions.
• Troubleshoot incidents and ensure application reliability.
• Collaborate with business and IT teams in Agile sprints.
• Maintain technical and functional documentation.
• Provide on-call support as part of rotation.

Skills

IBM i

Agile/Scrum

Troubleshooting

Stakeholder mgmt

On-site Brussels

Education

Bachelor's/Master's in CS/IT

Job description

IBM i (AS/400) Software Solution Engineer

Start Date: 01 December 2026

End Date: 31 December 2027

Duration: 13 Months

Working Model: 100% On-Site (Mandatory)

Work Schedule: Full-Time

On-Call Rotation: Mandatory (Evenings, Nights & Weekends)

About the Opportunity

We are looking for an experienced IBM i (AS/400) Software Solution Engineer to join a dynamic IT environment in Brussels for a long-term assignment.

The ideal candidate will have at least 3 years of software development experience, strong hands-on expertise in IBM i (AS/400), and the ability to develop, maintain, and continuously improve business-critical applications.

This role requires a combination of technical development, business analysis, production support, problem-solving, and stakeholder collaboration.

Key Responsibilities

• IBM i (AS/400) Development: Design, develop, test, deploy, and maintain business-critical applications.


• Business & Functional Analysis: Gather requirements and translate business needs into effective technical solutions.


• Application Maintenance & Support: Troubleshoot incidents, resolve technical issues, and ensure application reliability and performance.


• Continuous Improvement: Identify opportunities for application enhancement, automation, and process optimization.


• Stakeholder Collaboration: Work closely with developers, business teams, project managers, and IT support teams.


• Agile Delivery: Participate in sprint planning, retrospectives, technical discussions, and knowledge-sharing activities.


• Documentation: Maintain technical and functional documentation and support knowledge transfer.


• On-Call Support: Participate in the mandatory standby rotation, including evenings, nights, and weekends.

Mandatory Requirements

• Minimum 3 years of professional software development experience.


• Proven experience developing, maintaining, and enhancing business-critical software applications.


• Experience in business requirements analysis and technical solution design.


• Strong application troubleshooting, incident resolution, and problem-solving skills.


• Ability to work effectively with business stakeholders and multidisciplinary IT teams.


• Willingness to work 100% on-site in Brussels.


• Mandatory participation in an on-call/standby rotation, including evening, night, and weekend support.


• Knowledge of Agile/Scrum methodologies.


• Experience in application optimization, automation, and continuous improvement.


• Strong analytical thinking, communication, and stakeholder management skills.


• Proactive mindset with ownership and accountability.


• Curiosity, adaptability, and willingness to learn new technologies.


• Interest in AI-enabled solutions and development automation is an advantage.

Education

Bachelor's or Master's degree in Computer Science, Software Engineering, IT, or a related field. Equivalent practical experience will also be considered.

100% On-Site:

Candidates must be available to work physically in Brussels. Hybrid and remote arrangements are generally not offered.

Mandatory On-Call Rotation:

Candidates must be willing to provide scheduled support outside regular office hours, including nights and weekends.

4/5 Schedule Accepted:

A four-day working week is possible, provided all scheduled working days are performed on-site.

Interested?

If you are an experienced IBM i (AS/400) Software Engineer with strong expertise in software development, business-critical application support, requirements analysis, troubleshooting, and continuous improvement, we would be pleased to hear from you.