.NET development services · EonTech

Enterprise .NET that is
built to last.

Senior engineers building ASP.NET Core APIs and enterprise backends in C# on modern, cross-platform .NET. Domain-driven, tested, observable, and yours to own — no legacy Framework lock-in.

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  • Cross-platform .NET
  • Senior teams · your time zone
  • GDPR · ISO 27001
.NET on Linux
Modern cross-platform .NET, not legacy framework lock-in
Senior only
The engineers who scope your work are the ones who write it
Your IP
You keep the code, the pipelines, and the infrastructure

What we build

From APIs to enterprise systems

.NET is at its best for systems that must stay correct and maintainable for years. We build across that range — services, workers, and integrations — with the same engineering rigour throughout.

  • ASP.NET Core APIs

    REST and gRPC services with minimal APIs or controllers, typed end to end in C#. Fast, cross-platform, and comfortable in containers.

  • Enterprise backends

    Domain-driven services for line-of-business systems, where correctness, auditability, and long-term maintainability matter more than novelty.

  • Background and worker services

    Hosted services, queues, and scheduled jobs for processing that should never touch the request path.

  • System integration

    Connectors into ERPs, identity providers, and existing .NET estates, plus modernisation of legacy Framework code to current .NET.

  • High-throughput services

    Where the workload demands it, we lean on the runtime's performance — spans, pooling, and async to keep latency low under load.

  • Cloud-native deployment

    Containerised services on Kubernetes or managed platforms, on Azure or anywhere else. Portability is a design goal, not an afterthought.

How we deliver

From domain model to a live service

We model the domain and prove the architecture on a thin slice before scaling, so the foundations are right before features pile on.

  1. 01

    Model the domain

    We map the domain, the contracts, and the non-functional targets before code. Clear boundaries keep an enterprise system maintainable for years.

  2. 02

    Build a thin slice

    One real path end to end — request, persistence, tests, pipeline, and telemetry — to validate the architecture before features stack on.

  3. 03

    Scale the surface

    Senior engineers ship in weekly demos. Each endpoint and worker lands tested, traced, and reviewed on merge.

  4. 04

    Harden and hand over

    Load testing, security review, and runbooks. You receive a service you can run and documentation that explains it.

Engineering practice

Production discipline, from the first commit

  • C# and modern .NET. Current LTS releases, nullable reference types, and analyzers on — we do not ship you a legacy Framework liability.
  • Testing. Unit, integration, and contract tests on every merge, exercising the HTTP, queue, and database boundaries.
  • CI/CD. Reproducible pipelines that build, test, and ship, with fast rollback when a release misbehaves.
  • Observability. Structured logging, metrics, and distributed tracing via OpenTelemetry, so failures surface before users report them.
  • Security. Dependency auditing, secret management, input validation, and least-privilege access throughout.
  • Performance. Profiling under realistic load, async all the way down, and pooling — we tune rather than guess.

Fits your stack

Built to live inside your estate

Enterprise .NET rarely starts from a blank slate. We design the seams — to your identity provider, your data, and the systems you already run — and modernise legacy code incrementally instead of all at once.

When intelligence belongs in the flow, our .NET services call into Python ML backends and model APIs, keeping each tier in the language it is strongest at.

See our custom software practice

Why EonTech

A partner built for the long haul

  • One partner

    Backend, frontend, and custom AI under a single accountable team and contract.

  • Your time zone

    A globally distributed team that overlaps your working day and meets EU data rules.

  • Built to last

    Domain-driven, well-tested services that stay maintainable as the business changes.

  • You own it

    Code, infrastructure, and CI are yours to run, audit, and grow.

Common questions

What engineering leads ask first

  • Are you tied to Windows and Azure?

    No. We build on modern, cross-platform .NET that runs in Linux containers and deploys anywhere — Azure, AWS, GCP, or your own cluster. We use Azure services where they fit, never as a forced default.

  • Can you modernise a legacy .NET Framework app?

    Yes. We assess the codebase, carve out boundaries, and migrate incrementally to current .NET so you gain performance and support without a risky big-bang rewrite.

  • Can you join an existing .NET team?

    Yes. Much of our .NET work is staff augmentation or a dedicated team embedding into your solution, your review process, and your release cadence — senior capacity without a rebuild.

Build .NET that you can rely on

Tell us the system you need or the legacy app you want to modernise. We will scope a fixed first milestone in days, then start shipping tested, observable code you own.

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