Senior Software Engineer (.NET / C#)
Roskilde, Region Zealand, Denmark
Dec 17, 2025
Computerprogrammering
8200 Aarhus N
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Want to be a part of a company that’s making a difference?
We’re a growing global tech company, with huge potential for curious and caring minds, committed to each other, to deliver solutions that protect people and the planet for future generations. Our team of experts are focused on creating meaningful impact and making a real difference for our customers.
🌍 Impact: A strong connection to our mission through product, customer and impact is essential. We protect people and the planet by helping businesses mitigate risks and create safer, healthier workplaces.
💡 Innovation: Trusted by over 11,000 customers, you’ll have the chance to work with industry experts and thought leaders, dedicated to driving positive change. We believe in fostering a trusting environment that empowers our team to grow, innovate, and succeed.
📈 Growth: Connect commercial growth to personal growth opportunities. Benefit from a wide range of learning opportunities for ambitious professionals seeking development in a rapidly expanding sector.
We're on a mission to protect people and the planet by building and deploying transformative software. We need everyone's energy and commitment, regardless of region or rank, to make that mission a reality for millions more customers.
Our culture code, a set of principles that underpins our values, is our commitment to each other and working better together.
Join EcoOnline and be part of a mission dedicated to driving positive change. Read on to learn more about the opportunity and how you can have a positive impact!
About The Role
As a Software Developer at EcoOnline, you’ll play a key role in the company’s ongoing growth while helping to develop and enhance our cloud-based SaaS solution.
You’ll be comfortable working in a dynamic, fast-changing environment and willing to take initiative where needed. You’re down-to-earth, technically curious, and ambitious about delivering high-quality work. The role involves close collaboration across teams and occasional customer interaction, so you’ll enjoy working with a wide range of people across the organisation.
Language Skills Are Important For This Role
Danish and English are strongly preferred.
Responsibilities
We’re looking for an experienced full-stack (C#) software developer to help build and evolve our cloud-based SaaS solution, Almego®, part of the EcoOnline Group.
Almego® is a leading safety data sheet (SDS) authoring system used by many large organisations. With an exciting product roadmap ahead, there are plenty of opportunities to work on meaningful, technically engaging challenges. Almego® also plays a critical role in delivering high-quality data to other products across the EcoOnline product portfolio.
This role follows a hybrid working model: three days per week in the office and two days working from home, with initial training requiring you to be office-based for your first month.
What We're Looking For
This role requires solid, hands-on experience with:
C# / ASP.NET Core
ASP.NET MVC
Blazor
SQL (T-SQL / Microsoft SQL Server)
Entity Framework Core
Visual Studio
HTML, CSS, Bootstrap
Experience With The Following Is Considered An Advantage
Unit testing
Elasticsearch
Cloud platforms: Amazon Web Services (AWS) and/or Microsoft Azure
Application scaling
Microservice architecture
Docker and Kubernetes
GitHub Copilot
Agile delivery frameworks (SCRUM)
What We Offer
At EcoOnline, we build software that helps companies stay compliant with complex chemical legislation, without compromising on safety or quality.
We offer a flexible hybrid working model, a collaborative engineering culture, and real autonomy in how we build our products. You’ll join a small, experienced team of full-stack developers who make technology decisions together and have dedicated time each sprint to explore new ideas that improve Almego®.
What’s In It For You
Hybrid working (home + office)
High trust, low-ego engineering culture
Health insurance & lunch arrangement
Modern office near Trekroner station (with parking)
Foosball, social events, and a genuinely great team
EcoOnline is proud to be an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment where everyone feels safe and empowered to be themselves. Our Talent Acquisition team reviews all applications and believes in the potential of individuals who may not meet all the specific requirements but demonstrate the attitude, alignment with our values and drive to succeed.
We are committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures. If you need any assistance due to a disability, please speak to your talent acquisition partner.
At EcoOnline, we believe in the power of technology to reshape how organisations protect their people and the planet, paving the way for a safer, more sustainable future.
As a global SaaS leader, we’re at the forefront of innovation in workplace health, safety, and sustainability. Our team is passionate about creating meaningful impact and making a real difference.
Trusted by over 11,000 customers, we’re recognised as pioneers in our field, delivering expertise and guidance to empower our customers at every stage of their safety and sustainability journey.