Business systems your teams actually run on.
Dashboards, portals, workflow tools, integrations, and ERP/CRM-adjacent software — with RBAC, audit trails, observability, and documentation that survives handover.
We build internal systems and customer-facing software — not slide decks. Expect written requirements, acceptance criteria, and ops-ready delivery.
Built for operators, not demos.
Software that still works after the launch party — logging, permissions, and rollback paths your team can trust.
Requirements & acceptance criteria
We align on edge cases, roles, and data ownership before engineering spikes — fewer surprises at UAT.
Scalable architecture
Domain-driven boundaries, background jobs where needed, and data models that do not collapse at 10× volume.
API-first integration
ERP, CRM, payments, messaging — we design contracts, idempotency, and failure handling explicitly.
RBAC & auditability
Least-privilege defaults, immutable audit logs where required, and admin tooling your compliance team can read.
Testing & release discipline
Automated tests where ROI is clear, staging environments, and migration playbooks for go-live.
Runbooks & handover
Deployment docs, on-call guidance, and knowledge transfer so you are not locked to us for every change.
Problems we remove from operations.
Replace the file that runs half the company.
When business logic lives in emailed Excel files, errors compound. We encode the workflow with validations, history, and integrations back to your source systems.
What improves
- Single source of truth
- Fewer manual reconciliations
- Faster month-end close
Stop bending SaaS into pretzels.
Generic SaaS rarely matches your approvals, territories, or data residency needs. We ship tailored flows while reusing solid foundations (auth, billing, notifications).
What improves
- Fits the operating model
- Lower licence waste
- Predictable change management
Portals that reduce ticket volume.
Clients, partners, or field teams self-serve with the right visibility — tickets, documents, statuses, and SLAs surfaced honestly.
What improves
- Self-service deflection
- Clear accountability
- Measurable SLA adherence
Where custom software pays back fastest.
Heavy coordination, regulated data, or multi-entity operations — we speak that language.
Exceptions and events
Ops dashboards, carrier integrations, and alerting when reality diverges from plan.
Controls without friction
Workflows with maker-checker patterns, document trails, and export controls.
Utilisation and delivery
Resourcing, project financials, and client communication in one system of record.
Back-office scale
Catalogue tools, vendor onboarding, and internal apps that keep the storefront honest.
Modern defaults — chosen with intent.
We pick boring technology when it reduces risk, and advanced pieces when they remove real bottlenecks.
Application
- TypeScript
- React / Next.js
- Node.js
- PostgreSQL
Mobile & clients
- React Native / Expo
- Progressive Web Apps
- REST / GraphQL
Quality
- Automated tests
- CI/CD
- Staging parity
- Structured logging
Cloud
- Edge & regions
- Object storage
- Secrets management
- Observability hooks
Transparent delivery, measurable milestones.
Shape the system
Interviews, workflow mapping, integration inventory, and risk log — output is a backlog you can challenge.
Design the architecture
Data model, APIs, permissions matrix, and non-functional requirements — agreed before feature sprints.
Iterate to production
Two-week slices with demos, feature flags for risky areas, and incremental rollout plans.
Harden & transfer
Load checks where needed, backup drills, documentation, and training for admins and developers.
Anchors for planning — not quotes.
Complexity changes cost; we always align on scope in writing first.
Focused internal tool
From EUR 5,000
Single-team workflow or dashboard with one primary integration and RBAC.
- Workshop + backlog
- Core screens & APIs
- Auth & roles
- Staging + prod deploy
Department platform
From EUR 18,000
Multi-module system with several integrations, reporting, and admin governance.
- Architecture document
- Automated tests on critical paths
- Observability
- Admin + audit views
- 8–14 week typical range
Enterprise programme
Custom
Multi-tenant, regulated environments, phased migration, or dedicated team.
- Security review support
- SLA options
- Runbooks
- Long-term roadmap partnership
SaaS products with billing and tenancy are often scoped under SaaS Development.
Other practices in the studio
Procurement-friendly answers.
Is GXN Services a marketing agency?
No. We are a software and operations engineering partner. We do not sell influencer marketing, Google Ads management, or “full-service” retainers for creative campaigns.
Do you outsource everything?
Senior engineers stay accountable end-to-end. We bring specialists when needed, but delivery is not a black box.
Can you integrate with our ERP/CRM?
Yes — via documented APIs, webhooks, and batch pipelines, with clear ownership of retries and reconciliation.
What about mobile?
We ship responsive web first, native or hybrid when offline, sensors, or store distribution truly require it.
Tell us the workflow that hurts most.
We will mirror it back as a system map and a delivery plan you can evaluate — no fluff deck required.
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