Lead Developer to support the Green Energy Transition

Nordic RCC A/S; København; Hybrid; DKK 700,000 - 1,000,000; Full time

Benefits offered by this job

Hybrid work arrangement

Diversity and inclusion

Job summary

Nordic RCC A/S is seeking a Lead Developer to join the Application Development team in Copenhagen with a strong focus on C# and .NET. You will shape architecture, mentor peers, and deliver robust internal applications that support critical Nordic infrastructure.

You will work in a collaborative environment with approximately 23 developers, bridging technical direction with product needs while ensuring maintainable, scalable systems and high-quality code.

Qualifications

• Minimum 5 years’ experience as a full-stack developer in C# for the .NET platform.
• Experience providing technical guidance, facilitating decisions, mentoring colleagues, or coordinating development activities.
• Nice to have: Azure DevOps, Kubernetes, Scrum processes.

Responsibilities

• Design, develop, and maintain robust applications using C# and .NET, while promoting consistent standards, code quality, maintainability and operational stability
• Contribute to improving system architecture by identifying areas for technical refinement, refactoring, or modernization
• Collaborating across the organization, represent Application Development by collaborating with Product Owners, Delivery Management, testers, Quality Management and other departments
• Set and communicate technical direction with Application Architects, translating architectural principles and business needs into practical solutions and Architecture Decision Records
• Connect technical expertise across teams and applications, enabling collaboration on dependencies, common challenges and reusable solutions
• Support operational excellence by helping diagnose and resolve production issues and continuously optimize existing systems
• Share knowledge and technical expertise supporting colleagues’ professional development and help strengthen development practices across the team. This role does not include formal line-management responsibilities

Skills

C# / .NET

Full-stack development

REST APIs

Team collaboration

Code quality

Education

B.Sc. in Computer Science or related field

Tools

Azure DevOps

Git

Docker

Kubernetes

Visual Studio

Job description

Are you an experienced developer interested in building high-quality software and contributing to critical applications that support the efficient, reliable, and secure operation of the Nordic power grid? If you are looking to make an impact in supporting the green transition of the energy sector across Finland, Norway,Swedenand Denmark, you might be the person we are looking for.

Join a fast-developing Nordic company and become a part of an agile environment, where we develop innovative solutions.Nordic RCC is an important contributor to the green energy transition, supporting the Nordic transmission system operatorsin ensuring efficient and secure operations of the Nordic electricity power system.

As part of our continued growth, Application Development is expanding significantly. We are strengthening our department with two Lead Developers and five Senior Developers, creating exciting opportunities to join a growing team and help shape the future of software development at Nordic RCC.

Your role

As a Lead Developer in Application Development, you will join a collaborative department of approximately 23 developers who design, develop and maintain the internal applications supporting our current and future business services. If you are curious about Nordic RCC and what we do, learn more about our innovative solutions on the Nordic RCC webpage.

Your role combines hands-on development with broader technical leadership. You will work closely with Application Architects to help define and communicate technical direction, translate architectural principles into practical solutions and promote consistency across our application landscape.

You will connect technical expertise across teams, identify shared challenges, and contribute to reusable, sustainable solutions. Through cross-departmental collaboration, you will build alignment around technical opportunities, constraints, and impacts across the organization.

What you will do

• Design, develop, andmaintainrobust applicationsusing C#and .NET, while promoting consistent standards, code quality, maintainability and operational stability
• Contribute to improving system architecturebyidentifyingareas for technical refinement, refactoring, or modernization
• Collaborating across the organization, represent Application Development by collaborating with Product Owners, Delivery Management, testers, Quality Management and other departments
• Set and communicate technical direction with Application Architects, translating architectural principles and business needs into practical solutions and Architecture Decision Records
• Connect technical expertise across teams and applications, enabling collaboration on dependencies, common challenges and reusable solutions
• Support operational excellenceby helping diagnoseand resolve production issues and continuouslyoptimizeexisting systems
• Shareknowledge andtechnical expertisesupporting colleagues’ professional development and help strengthen development practices across the team. This role does not include formal line-management responsibilities

Technology Stack

• Primary languages and frameworks C#, .NET,SolidJS,JavaScript/TypeScript, Functional programming, Python
• Architecture, design patterns & integrations Clean Architecture,SOLID,Event-drivenArchitecture, Message-driven Architecture, REST APIs
• Databases & storage Relational databases (SQL Server), NoSQL databases (MongoDB), GridFS, S3
• Infrastructure & Platform (on-prem) Kubernetes (on-prem), Docker,Rancher,Prometheus/Grafana,ArgoCD,NginX
• Tooling and collaboration Git, Visual Studio, VS Code, JetBrains Rider, Azure DevOps, CI/CD pipelines

We’re looking for someone with

• CollaborativeAttitude:You will be working closely with our team of Application Architects, shaping architectural decisionsfor supporting maintainable,scalableand robust systems
• Technical Foundation: A degree in Computer Science,ITora relatedfield
• Proven Expertise:Minimum 5years’ experienceasfull-stackdeveloperinC# for the .NET platform.Experience providing technical guidance, facilitating technical decisions, mentoring colleagues, or coordinating development activities is a definite plus.
• Nice to have:Experience working with functional programming, Clean Architecture principles, Azure DevOps,Kubernetesand Scrum processes
• Energy Sector Knowledge: Familiarity with the power systems domain is aplus butnotrequired

What We Offer: A Flexible and Inclusive Workplace

You will join a diverse organization of23nationalities, where inclusivity is celebrated, with more than 30% women on board (and a commitment to improving this balance). Weare located inCopenhagen Towers office inØrestad, with the flexibility to balance on-site and remote work 2 days a week.

At Nordic RCC, we live by the values of fellowship, curiosity, respect, and transparency—values defined by our employees that shape how we collaborate and innovate. If you see yourself thriving in such an environment,we’dlove to hear from you.

Note that as part of the recruitment process, the candidate must undergo a satisfactory background check. The position is also conditioned upon a national security clearance. Both will be facilitated by Nordic RCC. You can read more on security clearance here. Please also note that the process includes that any spouse, registered partner, cohabitant, steady partner, co-resident, child over 18 living at home and parent with the same address as the candidate must also consent to be examined.

Application deadline and contact information

If you have any questions, please contact Pernille Yde Juul Hansen, Manager, Application [e-mail]/ [phone].