OK Tech Stack

Danish energy company expanding EV charging and modernizing legacy systems

Utilities Viby J 1,001–5,000 employees Founded 1913 Privately Held

OK is Denmark's largest energy supplier across fuels, electricity, and EV infrastructure, now actively modernizing a .NET Framework legacy platform while scaling DC fast-charging deployment and charging-station administration. The hiring mix—heavy on sales (16 roles) with junior/intern-dominant seniority levels—signals a customer-acquisition phase aligned with new charging concepts, though the parallel engineering effort to retire legacy .NET suggests tension between growth and technical debt.

Tech Stack 19 technologies

Core StackAutoCAD .NET C# SQL Server PostgreSQL Power BI Angular Docker Kubernetes Helm Azure DevOps VectorWorks Excel PowerPoint GCP PRINCE2 SAFe SuperOffice

Replacing.NET Framework

What OK Is Building

◆Challenges

Modernizing it platform
Accurate and timely bookkeeping
Developing new business area in energy solutions
Modernizing legacy .net framework
Maintaining stable financial systems
Implementing new concept
Maintaining high customer experience
Short wait times
Making staffing and planning more data-driven
Automation of manual processes

▲Active Projects

Dc fast charging deployment
New concept launch
Electric charging stations
Administration websites for charging stations
Facilitate erfa meetings
Update guidelines and handbooks
Modernizing legacy .net framework
Developing and maintaining apis
Optimization initiatives and automation of manual processes
Data-driven staffing and planning

Hiring Activity

Accelerating40 roles · 20 in 30d

Department

Sales

Engineering

Ops

Product

Finance

Design

Logistics

Operations

Seniority

Intern

Mid

Junior

Senior

Manager

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About OK

OK supplies fuel, electricity, and EV charging solutions to Danish consumers and businesses, with over 110 years of operational history. The company is structured around three business lines: traditional fuel retail, grid electricity supply, and a growing EV-infrastructure segment (fast-charging stations, charging apps, and administration platforms). Operating at 1,001–5,000 employees and headquartered in Viby J, OK remains Danish-owned and customer-owned. Current priorities include DC fast-charging rollout, modernizing legacy .NET systems, and automation of staffing and financial processes.

HeadquartersViby J

Company Size1,001–5,000 employees

Founded1913

Hiring MarketsDenmark

Frequently Asked Questions

What technology stack does OK use?

OK's core stack includes .NET and C# for backend services, SQL Server and PostgreSQL for databases, Angular for web frontends, and GCP/Azure for cloud infrastructure. DevOps tooling spans Docker, Kubernetes, Helm, and Azure DevOps. They are actively retiring .NET Framework in favor of modern .NET.

What projects is OK working on?

Key initiatives include DC fast-charging station deployment, new charging-concept launches, administration platforms for charging stations, API development and maintenance, and automation of manual staffing and financial processes. Legacy .NET Framework modernization is ongoing.