.NET & C#
Backend development, APIs, business logic, integrations, and maintainable application architecture.
Currently booked until 2027
.NET, Angular & AI development for reliable business software
We help organizations design, build, and improve modern web applications using C#, .NET, Angular, SQL Server, and pragmatic software architecture.
Custom business applicationsSoftware shaped around your exact processes.
AI & voice assistantsLLM features and voice built into your systems.
Legacy modernizationBring older .NET systems up to date, safely.
API & system integrationsConnect your tools and third-party services.
Reliability & performanceFaster, more dependable software over time.
● outcome-focusedidea to maintainable software
Expertise
Deep, hands-on capability across the Microsoft & web stack
Four areas where we deliver: from server-side architecture to the screens your users touch every day.
Angular
Modern front-end applications with structured components, clean UX, and scalable client-side architecture.
SQL Server & T-SQL
Data modeling, queries, stored procedures, performance improvements, and reliable persistence.
Enterprise Applications
Practical software for real business processes, with attention to quality, maintainability, and long-term value.
Applied AI
Production AI features, built into real systems
Beyond standard web and mobile development, we build practical AI into business software. A recent example: a telephony voice assistant that verifies a caller's identity, then securely executes the same operations normally available only through the web and mobile apps.
LLM features & system promptsReliable, well-scoped model behaviour.
Real-time voice — TTS / STTNatural speech in and out, via LiveKit.
Telephony AI assistantIdentity verification, then secured API calls.
Positioning
Flexible development capacity without the overhead
We're here for organizations that need experienced development capacity, clear communication, and hands-on delivery. From extending existing systems to building new features, the focus is always on practical, maintainable software.
Direct communication
Technical execution
Pragmatic architecture
Overview
Volantis at a glance
- What does Volantis do?
- Volantis builds, improves, and modernizes web and business software for organizations: from programming and consulting to building practical AI into existing systems.
- Who is it for?
- Any organization that needs experienced development capacity: a new application, extending an existing system, or project support.
- Where?
- Based in Rotterdam. On-site across the Netherlands, remote across the EU.
- Which technologies?
- .NET, C# and ASP.NET Core, Angular and TypeScript, SQL Server and T-SQL.
- What does Volantis do with AI?
- Volantis builds AI directly into business software: LLM features with reliable, well-scoped model behaviour, real-time voice (TTS/STT) and voice assistants, and AI that securely performs actions inside existing systems. A telephony assistant that verifies callers and then runs secured actions is one example.
- Which projects fit best?
- Custom business applications, modernizing existing .NET systems, API and system integrations, and adding AI or voice to existing software.
- How does Volantis work?
- A clear path from understand to build to improve, with direct communication and pragmatic, maintainable architecture.
- Why Volantis?
- 12+ years of .NET and Angular experience, proven with an own product (ImageTrace) and a telephony AI assistant running in production.
Built & operated by Volantis
ImageTrace
We don't only build for clients, we ship and run our own products. ImageTrace is a reverse-image-search platform for photographers: .NET services, an Angular dashboard, and a GDPR-compliant, EU-hosted matching engine. Proof of how we build for the long term.
Approach
A simple, dependable way of working
No ceremony for its own sake. Just a clear path from problem to working, maintainable software.
Understand
Clarify the business process, technical landscape, and priorities before a line of code is written.
Build
Deliver clean, tested, maintainable software using proven Microsoft and web technologies.
Improve
Refine performance, usability, architecture, and reliability over time.
Tech stack
Proven tools, used well
A focused toolkit chosen for reliability and long-term maintainability, not novelty.
- C#
- .NET
- ASP.NET Core
- Angular
- TypeScript
- SQL Server
- T-SQL
- REST APIs
- Azure
- Entity Framework
- LLMs
- LiveKit
- TTS / STT
- Voice AI
Contact
Need experienced .NET and Angular capacity?
We're fully booked until 2027. Planning further ahead? Leave your project details and we'll get in touch as soon as there's room.
- Booked until 2027, planning ahead welcome
- Project support or long-term collaboration
- Remote across the EU, on-site in NL