Custom authorization server development

OAuth 2.0 + OpenID Connect server — built for your business

We design and build authorization servers on top of an open core, following the OAuth 2.0 and OpenID Connect specifications. Compliant with IETF standards and modern security best practices.

OAuth 2.0OpenID ConnectSSO

What we do

Authorization servers — from architecture to production

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OAuth 2.0 + OpenID Connect servers

Single sign-on, user, session and role-based models

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Client service

A service for working with the authorization server: code exchange, client sessions, granular logout.

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Gateway offloading for authentication & authorization

Your developers won't have to deal with it. We'll pick and configure the right gateway.

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Client management

Admin API and UI to manage OAuth entities such as clients and scopes

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Verification provider integration

We build integrations with your OTP, Selfie and other providers, or help you choose them.

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Integration & deployment

Docker, CI/CD, monitoring, health checks. Deployment consulting for your own infrastructure.

Why us

01

International standards

We comply with the RFCs — OAuth 2.0, OpenID Connect, PKCE, Token Introspection and more.

02

Security

We follow modern security standards for encryption, hashing and secret storage.

03

Flexibility

We consult and build the product around your requirements, constraints and specifics.

04

Production-ready

Metrics, logs, masking, liveness/readiness probes, graceful shutdown, Docker images — all included.

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Strategic thinking

We plan ahead to minimize the cost of future migrations.

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Simplicity

We provide everything needed to work with the authorization server. Your developers won't have to think about it.

The advantages of custom development

A solution designed around your business — not a business bent to fit someone else’s product

Only what you need

Off-the-shelf solutions drag along hundreds of features you'll never use. We design a modular architecture around your needs — nothing extra, minimal resource footprint.

Full control

Your server, in your infrastructure. No vendor lock-in, no surprise pricing changes. User data stays with you.

Painless evolution

Keycloak upgrades often break customizations. With us, the code is written for you — updates and maintenance included, no surprises during migrations.

Precise integration

No need to bend your business logic to another product's limitations. We embed authorization into your architecture, not the other way around.

Open core built on Scala 3

At the heart of our solutions is Versola — a core we built for constructing OAuth 2 and OpenID Connect servers on Scala 3.

  • Modular monolithic architecture
  • PostgreSQL implementation, extensible to other databases
  • Observability out of the box
View on GitHub
Scala

Articles & resources

Technical articles on OAuth 2.0, OpenID Connect and application security

Everything to get started

Guides, API reference and OAuth 2.1 / OpenID Connect concepts

Georgii Kovalev

6 years at Tinkoff — from engineer to head of backend development for Tinkoff ID. Over that time the service grew from tens of thousands to 50 million users. That experience became the foundation of Versola.

Let's discuss your project

Tell us about your task — we'll estimate the timeline and propose a solution.

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