Euroclear
Functional parity across the sub-systems. Quality gates before each release reduced post-deployment defects, and the specifications removed a key delivery risk flagged in the project’s initial assessment.
Brussels · since 2008
From first idea to mature product, hand in hand.
We are experts in software architecture, agile delivery, cloud & infrastructure, cybersecurity and AI with guardrails.
Nuntius helps you shape the need, then designs, builds and runs the software, with architecture, agile delivery, infrastructure, cloud and security under one roof. Euroclear, AG Insurance and Elia have trusted us with systems that cannot afford to fail.
Organisations we have worked with
From financial-market infrastructure to the national power grid, some of Belgium’s most demanding organisations have relied on our engineers.
Key figures
- Founded in Brussels
- 2008
- Client references
- 10
- Services
- 12
- Practices
- 3
What we do
Solutions & Services
Software & Architecture
Architecture, delivery and modernisation of business-critical .NET and Angular applications, from the first design decision to the production release, for organisations in financial services, insurance, energy and the public sector.
Infrastructure, Cloud & Security
Design, operation and protection of the infrastructure your applications run on, whether on-premises, hybrid or in the cloud. Our consultants have hands-on experience operating multi-country production infrastructure.
Digital transformation & IT consultancy
Strategy that stays connected to execution: aligning business priorities with the technology choices, automation and delivery plan that make them real.
Software engineering, the agile way
We don’t just deliver a project. We grow it with you.
Many projects fail before the first line of code, because the need was never clearly shaped. We start there. Then we stay at your side through every stage of the software lifecycle, in short agile cycles you can see and steer, until your product stands on its own.
Shape the need
Workshops with your business and IT people to turn an idea into clear goals, user stories and a scope you can budget.
Design the solution
Architecture, user experience and a realistic roadmap, starting with the smallest version that delivers real value.
Build in agile sprints
Two-week iterations with a working demo at the end of each, automated tests and continuous integration. You see progress, not reports.
Launch with confidence
Secure deployment on the cloud or on your own servers, with monitoring, documentation and a clean handover to your teams.
Grow to maturity
We keep improving, scaling and securing the product as your business grows, for as long as you need us.
One partner from the first workshop to the hundredth release: no hand-offs between agencies, no lost knowledge.
Tell us about your ideaReferences
Selected engagements
AG Insurance
Less manual deployment work and more consistent releases across Dev, QA and UAT, shorter build times, one branching strategy across repositories, and better code-review pass rates.
Elia
Three settlement modules delivered in an Agile setting, and a back end with cleaner service layering in place of the legacy WCF/WPF stack.
Why Nuntius
How we work with you
Straight answers
We say what we know, what we don’t, and what each option will cost. Respect for your people and your constraints comes first.
Results that reach production
We judge our work by what goes live and keeps running, at every stage of your organisation’s growth.
Partnership for the long term
We work inside your teams, share what we know, and leave documentation and skills behind rather than dependency.
Current, proven technology
We keep learning, from domain-driven design to AI-assisted engineering, and adopt a new tool once it has proven itself, not because it is new.
Built in-house
We don’t just advise on AI. We build with it.
How we engage
We shape each engagement around your budget, your goals and the way your organisation works.
On-site consulting mission
A senior consultant joins your team, on site or hybrid, on a time-and-material basis: as architect, technical lead or analyst.
Fixed-scope project
A defined deliverable — an architecture review, a migration, an application or an infrastructure build — with an agreed scope, timeline and price.
Ongoing support
Support after go-live, from occasional expert advice to a regular service level, depending on what you need.
- Short, medium or long-term contracts.
- Based in Brussels; available across Belgium and internationally.
- Working languages: French, English, Dutch (basic), Kinyarwanda and Swahili.
Have a system that can’t afford to fail?
Tell us where you stand. We will set up an intro call, with no obligation.