Mainframe expertise since 1995
Asist is a specialist IBM mainframe consulting practice. We work alongside your teams with deep technical expertise in development, maintenance, modernization, and tooling - so your core systems stay reliable, open, and ready for what comes next.
Specialists for development, integration, and support on IBM mainframe and related enterprise workloads.
Legacy transformation, migration, testing, and release management with vendor-neutral methods.
Long-term relationships with financial institutions and enterprises in Belgium and worldwide.
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Your needs are the central focus in everything we do. We combine an innovative, entrepreneurial culture with teamwork, performance, and specialists who integrate quickly in your organisation.
Founded in 1995, Asist started as a company specialised in application development. Today we advise clients with deep technical competences across mainframe, iSeries, and distributed environments for major organisations and institutions worldwide.
Our structure is inspired by a competence-based partnership: business units that are fully responsible for their own destiny, working together for our success and yours. Working for Asist should be professionally stimulating - our people are our most important asset.
Mainframe consulting, dedicated squads, observability, and our legacy intelligence platform cover the full IT lifecycle - from flexible capacity and managed teams to operational insight and proven landscape maps.
Hands-on expertise on the systems that still run your core processing - maintain, modernise, and integrate with the wider IT landscape.
A ready-made Asist squad with a named team lead, stable roster, and shared delivery practices - embedded in your organisation and accountable for outcomes.
Asist LX maps metadata across your landscape - COBOL, JCL, DB2, online and batch applications, and the services that connect them - so teams decide from facts, not guesswork.
End-to-end visibility and intelligent optimization for hybrid estates, powered by IBM Instana and IBM Turbonomic - delivered and run by Asist.
If you imagine outdated machines from the Moon landing era, it is time to talk to us. Mainframes remain among the most powerful platforms available - and many organisations still depend on them for core operations.
For more than 20 years we have worked in public, finance, and industrial sectors - from planning through deployment and monitoring. That experience covers legacy transformation and migration, application development and testing, and methods that reduce change risk while improving delivery speed.
Replacing legacy systems is costly and carries high operational risk. Capyx Group helps organisations maintain and evolve these environments into open components fully integrated in the wider IT landscape - connecting legacy code to modern channels while preserving what works.
Asist brings the niche expertise many teams lack in-house: IBM software development and operations, optimization, and modernization without disrupting core processes.
Financial institutions and enterprises across Belgium and Europe rely on Asist for engineering tooling integration, specialist mainframe capacity, and long-running modernization programs. From day-to-day operations to multi-year transformation roadmaps, teams choose us for deep IBM Z expertise, hands-on delivery, and a partnership model that keeps critical systems stable while capability grows.
With Asist, AG Insurance found a reliable and flexible partner in the evaluation and integration of IBM Rational Developer for System z. Local proximity, in-depth product knowledge, and a tight IBM partnership create important value for us as a client. AG Insurance
When I think about Asist I feel serene: high expertise, deep involvement to attain goals, and an international culture that enables easier advice and listening. I recommend Asist as an excellent provider in IT solutions around engineering tools. Client testimonial
Tell us about your mainframe challenge. We respond with the right specialists and approach.
Square Eugene Plasky 92-94, bus 16
1030 Schaarbeek, Belgium
