Rated 4.87/5 on Sortlist★★★★★

Enterprise integration and custom software

We connect the ERP, financial and operational systems you already run, centralize access to them with Keycloak, and build custom applications around how your teams work. One team covers all three.

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Trusted by Europe's leading organizations

T-Systems Oracle European Commission Canon Deutsche Telekom

One team for integration and custom software

Integration and custom development carry the least glamour and the most operational risk. DNA Solutions treats them as first-class engineering: production-grade middleware, reviewed access control, and applications designed around how your teams actually work.

Integration, identity and custom development rarely live apart: DNA Solutions designs the three layers as one architecture, with the same engineers from day one.

Why enterprises trust DNA Solutions

We treat middleware as a product with a long life: retry policies, dead-letter queues, daily line-by-line reconciliation and monitoring that flags issues before users do.

Same discipline across the pillar. Identity centralized in Keycloak, access decisions in one reviewed place. Custom software designed around real workflows.

The systems we connect are live, so new pipelines run in parallel until reconciliation proves a match.

DNA Solutions by the numbers

We design technology that lands on your bottom line. European enterprises trust us with extreme data volumes and critical financial pipelines.

A senior team of engineers and consultants across Europe.

See Client Results
€1M

Annual savings across European clients

Software licensing savings of up to €1M per year for some of our clients.

€300M

Monthly audited transactions

We built and maintain a Deloitte-audited billing platform processing €300M in audited transactions every month.

6 years

Long-term client relationships

Several clients have worked with DNA Solutions for six years. We continue to develop and support their software as their needs evolve.

Six integration patterns for enterprise systems

Most integration landscapes come down to a handful of recurring problems. These are the ones we have already solved for European operators, each running in production today. If your situation maps onto one of them, a large part of the design work is already proven; if it does not, the same engineering approach applies.

Discuss Your Landscape

Enterprise application integration

We connect ERP and business applications through an integration layer. Data validation, format translation and traceable exception handling support consistent records and reduce manual transfers. Failed records can be reviewed and corrected without replaying the whole exchange, while clear ownership and monitoring help teams maintain the connection over time.

Oracle and surrounding systems

Connecting Oracle databases and applications to the financial and operational platforms around them, so an aging Oracle estate keeps serving the business while the rest of the stack moves forward.

Payment gateway connections

Integrating payment service providers and gateways with billing and back-office systems, with the retry logic and reconciliation needed when every dropped message is money.

Custom ERP and back-office links

Many enterprises run an ERP built in-house years ago. We connect these custom systems to modern platforms without forcing a rewrite, preserving the logic the business depends on.

API layers over existing platforms

Designing and building clean APIs in front of systems that never had one, so newer applications, partners, and mobile clients can consume data without touching the platform underneath.

Event-driven pipelines

Message-based architectures such as Kafka that move data between systems in real time, with queues that absorb downtime on either side so a temporary outage never turns into lost records.

What clients and partners value about DNA Solutions

Selected reviews from clients and partners about working with DNA Solutions.

"Collaboration with DNA is great they listen and know our industry inside out and they are both reactive to requests and proactive with ideas and proposals"
Peter HopkinsHead of financial platforms Tolling, T-Systems Road ChargingSortlist · 2025-11-24

Questions before an integration project

The answers we give most often when a team first walks us through its system landscape.

How does DNA Solutions approach a landscape with many different systems?

We start by mapping the landscape as it actually runs: which systems hold which data, where records are copied by hand, and which platform is the real source of truth for each flow. That map usually surfaces two or three connections causing most of the daily friction, and that is where we begin. The first integration runs in parallel with the existing manual process until reconciliation shows both produce the same records, then the manual step is retired. From there we extend connection by connection, in order of operational pain. You never sign up for a multi-year program on day one; each phase delivers a working connection your team uses before the next one starts.

Who owns the code and the integration layer afterwards?

You do. Everything we build, middleware, custom applications, Keycloak configurations, pipelines, is delivered with full ownership transferred to you. The code lives in repositories you control, the documentation describes how each connection works and how to operate it, and the runbooks cover the failure scenarios. There is no proprietary platform of ours sitting in the middle of your stack and no license fee attached to what we build. If you later decide to hand operations to your internal team or to another vendor, the handover material is already written, because we produce it as part of the delivery rather than as an afterthought.

How long does a typical engagement take?

A single well-scoped integration, one system connected to another with reconciliation and monitoring in place, typically goes to production in eight to twelve weeks. A centralized identity rollout with Keycloak runs on a similar scale, depending on how many applications need to be connected to it. Custom application development is more variable: a first usable version is usually live within a few months, then grows release by release with the teams using it. Larger landscapes are phased, so the calendar is really a sequence of these shorter deliveries rather than one long project. We give a concrete estimate after the mapping work, when we know what each connection involves.

Who maintains the middleware once it is live?

We can maintain integrations after delivery or hand operations to your team with documentation and runbooks. Monitoring and recovery procedures are part of the implementation.

Can one team really cover integration, identity, and custom development?

That combination is the reason this service line exists. The three disciplines depend on each other constantly: a custom application needs the integration layer to feed it data and the identity layer to decide who sees what. When three vendors each own one piece, every design decision becomes a coordination meeting and every incident becomes a debate about whose side the problem is on. Our engineers work across all three, so the access model is designed together with the data flows, and the application is built against integrations we know in detail because we wrote them. For you it means one accountable team and one explanation when something needs to change.

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integration priorities

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