Senior Software Engineer (Copenhagen/Aarhus)

Lenus Copenhagen Full-time Salary Competitive Lenus is looking for a new Senior Software Engineer for our Copenhagen or Aarhus Office!
Join the health revolution!

At Lenus we are fundamentally energized by our shared vision: making the world a healthier and happier place. Could you see yourself working for a great purpose in a dynamic, global culture? Then we might be a great match.

Who are we looking for?
We’re seeking a high-performing Senior Software Engineer with a passion for building meaningful, user-focused products. You care deeply about your craft and about the difference your work makes - for the coaches we empower and the lives they change. You bring strong technical skills, a high drive, and a collaborative spirit.

Success in this role means becoming a key player in building the market-leading platform for health coaches - today, tomorrow, and for years to come. We have big ambitions for 2026, and we’re looking for someone who’s ready to take ownership, grow with Lenus, and help us deliver on that vision.

Key Responsibilities

• Drive projects end-to-end - from planning and architecture to hands-on implementation and delivery with a strong focus on execution excellence.
• Code extensively while driving technical execution and setting a high engineering bar.
• Lead and guide other engineers without formal management responsibilities.
• Design scalable, maintainable systems that anticipate future needs and support long-term growth.
• Challenge the status quo and proactively identify better approaches, abstractions, and architectures.
• Collaborate effectively across teams to clarify requirements and translate them into actionable technical plans.

Qualifications
We value diverse experiences and backgrounds. While not all qualifications are mandatory, the ideal candidate should possess:

• 4+ years of professional software engineering experience, including ownership of complex projects.
• Strong system architecture and software design skills, with the ability to break down large problems and execute effectively.
• Proven ability to learn new technologies quickly and adapt to evolving stacks, regardless of prior exposure.
• Hands-on experience with modern web/mobile technologies - familiarity with Node.js, TypeScript, React, React Native, Postgres, or AWS is a plus.
• A “let’s go” mindset - thrives on hard problems, seeks challenges, and is motivated by solving meaningful (and challenging) technical work.
• Excellent communication skills, able to explain complex technical concepts to non-technical stakeholders.
• Bonus: Experience building AI-enabled products or working with LLM application layers.

We encourage you to apply even if you don't tick all the boxes! We’re on an ambitious and difficult mission - and we set high expectations for ourselves and each other. We’re looking for driven, passionate engineers who want to build something extraordinary and are not afraid of the hard work that comes with it.

The Product Team
You will be joining our Product team of ~70 people, consisting of engineers, designers, product managers, as well as our support and customer success teams. The team culture is inherently open, energetic, and highly collaborative, united by the mission of improving global health.

Benefits & Perks

• Regular development feedback cycles and mentoring to accelerate your growth
• Opportunity to be awarded equity and share in Lenus’ long-term growth and success
• Pension (2% employer contribution) and insurance through AP Pension
• Sports and activities, like paddle tournaments, Football Club, Run & Dip, and much more!
• Regular team gatherings and monthly social events across all our offices, plus company-wide celebrations.
• Healthy daily snacks and fuel. Our offices are set up with fruits, snack bars, and a selection of drinks
• Dog friendly office
• A Macbook and other hardware to support you in your daily work

We'll be going through applications frequently, so if this sounds like a great opportunity for you, hit apply and our Talent Acquisition Team will go through it and be in touch with you!

Please submit your application in English

About Lenus
Lenus was founded in Denmark by Bertram Thorslund, in 2016. We are a health technology company that empowers health coaches to scale their businesses through the use of pioneering technology and our in-house business, health, and innovation expertise.

We’re inspiring a new generation of health coaches. People who have the power to move not only bodies but minds too. We are at the forefront of an industry under rapid transformation and our strategic innovations pave the path for the change we want to see. Happier and healthier people.

In 2021, Lenus received the largest series A funding round in Denmark’s history. Since then the company has grown from 5 to over 300 employees and today, Lenus is headquartered in Copenhagen, with offices in New York, London, Aarhus, Amsterdam, Stockholm, Berlin, Hamburg, Madrid, Helsinki, Oslo, Toronto, Miami, Southern California & beyond.

At Lenus, we value diverse perspectives and experiences. Even if you don’t meet every qualification, we encourage you to apply. Your unique skills and background could be just what we need to make a difference together.

We commit to an inclusive recruitment process and equality of opportunity for all our job applicants.

We care about your privacy, personal data and information at Lenus.

For specific details on how your personal data and information is processed by Lenus during any recruitment process, please see our privacy policy.

Specific to EU applicants:

Lenus will treat all personal information collected during the recruitment process with the utmost confidentiality and in line with current data protection legislation. We rely on the lawful basis of Art. 6 (1) (b) of the GDPR to process the information provided by you in the recruitment process.

Specific to California applicants:

Lenus will treat all personal information collected during the recruitment process with the utmost confidentiality and in line with current data protection legislation.