.NET developer to Avensia Oslo

Avensia Sweden; Oslo; Hybrid; NOK 900,000 - 1,200,000; Full time

Job summary

Avensia Sweden in Oslo seeks a senior .NET developer to build and improve high‑impact e‑commerce solutions for leading retailers. You will work hands‑on with OMS, PIM, CRM, and payment integrations, in API‑first and cloud‑native environments, using Azure, CI/CD pipelines, and GitHub to deliver scalable solutions.

You will shape architecture, explore composable and headless commerce, and collaborate closely with clients and your team to translate business needs into robust technical outcomes.

Qualifications

• Senior .NET developer with solid backend experience.
• Curious and eager to learn - especially within AI and modern tech.
• A team player who enjoys sharing knowledge and lifting others.
• Comfortable working in agile teams and close to clients.
• Fluent in English + Norwegian or Swedish.
• Experienced in working with composable or headless commerce.
• Familiar with platforms like Commercetools and Contentful.
• Comfortable working with API-first architectures.
• Experienced in building microservices and cloud-native solutions.

Responsibilities

• Build and improve e-commerce solutions in .NET (C#), used daily by leading retail brands.
• Work hands-on with integrations across OMS, PIM, CRM, and payment systems, often in API-first and cloud-native environments.
• Use Azure, CI/CD pipelines, and GitHub to deliver scalable and reliable solutions.
• Shape architecture and explore modern approaches like composable and headless commerce.
• Collaborate closely with your team and clients to turn business needs into technical solutions.

Skills

Senior .NET developer

Backend development

API-first architectures

Composable commerce

Headless commerce

Fluent in English

Tools

Azure

GitHub

CI/CD pipelines

Job description

Build commerce solutions used by millions - from optimizing checkout flows to connecting complex systems behind the scenes, together with people you’ll genuinely enjoy working with!

Who we are

We are a tech & knowledge company specializing in modern commerce. As Avensians, we help brands like Varner, Get Inspired, Coop, Eurosko, Kid, Megaflis, Vita, Stormberg, Brødrene Dahl, and Fjellsport create seamless digital experiences - combining strategy, technology, and real business impact.

At Avensia, we thrive together, we care deeply about our customers’ success, and we challenge ourselves to keep pushing the boundaries of modern commerce. We believe the best solutions are created in strong teams where curiosity, collaboration, and a genuine passion for what we do come together.

Why you’ll like it here

• You’ll be part of a tight-knit team of developers, architects, and designers who enjoy solving complex problems together - and who don’t mind a good laugh along the way.

• Colleagues who care - about the work and each other

• Social activities, team events, and a strong sense of community

• Flexibility in how and where you work

What you’ll do

• Build and improve e-commerce solutions in .NET (C#), used daily by leading retail brands

• Work hands-on with integrations across OMS, PIM, CRM, and payment systems, often in API-first and cloud-native environments

• Use tools like Azure, CI/CD pipelines, and GitHub to deliver scalable and reliable solutions

• Shape architecture and explore modern approaches like composable and headless commerce

• Collaborate closely with your team and clients to turn business needs into technical solutions

What makes you a great fit

• A senior .NET developer with solid backend experience

• Curious and eager to learn - especially within AI and modern tech

• A team player who enjoys sharing knowledge and lifting others

• Comfortable working in agile teams and close to clients

• Fluent in English + Norwegian or Swedish

• Experienced in working with composable or headless commerce

• Familiar with platforms like Commercetools and Contentful

• Comfortable working with API-first architectures

• Experienced in building microservices and cloud-native solutions

Location: Oslo