SRBook a call

Microsoft consulting · Belgrade, Serbia

Systems that talk to each other. Software that stays in production.

We design and build Azure integrations, custom .NET applications and web platforms for companies that need their business systems to work as one — and to keep working long after the project ends.

Start a conversationSee what we do

Senior-only team · Nearshore, CET timezone · Microsoft stack since 2001

  • 25+Years of hands-on .NET engineering
  • 24/7Production systems we build and keep running
  • CETSame working day as your team, in Belgrade
  • B2BMulti-tenant SaaS designed and operated in-house

Services

Four things we do well

Every engagement starts with the same question: what does the business actually need this system to do? The technology follows from the answer, not the other way around.

Azure Integration

Connect ERP, CRM, HR and legacy systems into reliable, observable message flows on Azure.

Read more

Custom Software Development

Business applications and multi-tenant SaaS in C# and .NET, from specification to production support.

Read more

Web Development

Fast, accessible corporate sites, product pages and customer portals — built to load in under a second.

Read more

Cloud & Infrastructure

Migration to Azure, Windows Server and IIS operations, Microsoft 365 administration and release automation.

Read more

How we work

Small team, written specifications, incremental delivery

We are deliberately small. That means the person who designs your architecture is the person who writes the code and answers the phone when something breaks.

  1. 01

    Assessment

    We map the systems you have, the interfaces between them and the constraints nobody documented. You get a written picture of the current state and the risks in it.

  2. 02

    Architecture & specification

    Before a line of code, we agree on the target architecture, the data contracts and the acceptance criteria — in a document you can hand to any engineer, including ours.

  3. 03

    Incremental build

    We ship in small, working increments against a shared backlog. You see progress every sprint, and change requests cost what they should cost.

  4. 04

    Run & support

    Monitoring, releases, versioned database migrations and a named contact. Most of our clients stay with us after go-live, which is the only endorsement that matters.

Flagship work

ATLAS — a B2B SaaS platform we built and run

ATLAS is a multi-tenant platform for Serbian tourism agencies: reservations, payments, fiscalisation, e-invoicing and reporting in one system. We designed the architecture, wrote the code, and operate it in production today.

Read the case study
  • Multi-tenant .NET architecture with a dedicated identity service and JWT/SSO across modules
  • Serbian fiscalisation and SEF e-invoicing integrated end to end, including advance-invoice chains
  • Reporting stack producing PDF, Excel and server-side reports from a single data model
  • Operated on our own infrastructure with versioned SQL Server migrations and automated deployments

Capabilities

The stack we know deeply

We are Microsoft specialists rather than generalists. We would rather say no to a technology we do not know than learn it on your budget.

Azure

  • Logic Apps (Standard)
  • Service Bus
  • API Management
  • Functions
  • Key Vault
  • App Service
  • Static Web Apps
  • Entra ID

Application development

  • C# / .NET 8–10
  • ASP.NET Core
  • Blazor WASM & Server
  • React
  • REST APIs
  • Entity Framework
  • Background workers
  • PWA

Data

  • SQL Server
  • T-SQL & performance tuning
  • Flyway migrations
  • MongoDB
  • Reporting Services
  • ETL & reconciliation

Web & delivery

  • Astro
  • React
  • TypeScript
  • Modern CSS
  • GitHub Actions
  • Windows Server / IIS
  • Microsoft 365
  • Monitoring

Why Binary Consulting

What tends to make the difference

You talk to the engineers

No account layer between you and the people doing the work. The architect on your project has 25 years of production .NET behind them.

Everything is written down

Specifications, decisions and interfaces are documented as we go. If you ever replace us, your team inherits a system they can actually take over.

We run what we build

Operating our own SaaS platform means we design for the 3 a.m. incident, not just the demo. Reliability is a design input, not an afterthought.

Nearshore, not offshore

Belgrade is one hour from most of Europe and in the same working day as your team. EU-compatible contracting, invoicing in EUR.

Have a system that needs to talk to another system?

Send us a short description of the problem. You will get a considered answer from an engineer — not a sales sequence.

Get in touchEmail office@bcb.rs