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Software Engineer
Posted on July 12, 2025
- København, Denmark
- No Salary information.
- Full Time

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About The Flex:
The Flex is on a mission to transform the rental sector globally. We believe that renting a home should be as easy as buying an item from Amazon. Giving tenants the option to easily rent anywhere in the world and giving landlords simple, hassle-free property management without excessive management fees. We are building a small and dynamic team of A-Players, who are committed to growth and ready to scale The Flex to a global powerhouse in its sector. We believe in rewarding ambition and promoting from within.
Position Summary
As a Software Developer, you will be instrumental in designing, developing, and maintaining robust digital solutions to support The Flex operations and customer experiences. You will work on a variety of projects spanning front-end and back-end development, cloud deployment, and automation. This role requires strong problem-solving skills, adaptability, and a proactive approach to driving innovation and efficiency in our software systems.
Key Responsibilities:
Full-Stack Development: Design, develop, and maintain scalable web applications using Node.js and React.
Deployment & Cloud Management: Deploy and manage applications on AWS Cloud, utilizing serverless architecture.
API Development: Design, implement, and optimize RESTful APIs using FastAPI (Python optional) and other modern frameworks.
Automation & Scripting: Build automation tools to streamline development processes.
Problem-Solving & Debugging: Analyze complex problems, identify root causes, and implement efficient solutions.
Collaboration & Communication: Work closely with cross-functional teams to ensure seamless integration and execution of key projects.
Code Quality & Best Practices: Implement CI/CD pipelines, conduct code reviews, and ensure best practices in Git, testing, and software quality assurance.
What We’re Looking For:
Proficiency in Node.js, React, and AWS Cloud.
Experience with serverless applications and cloud infrastructure.
Strong problem-solving skills and ability to quickly learn new technologies.
Familiarity with FastAPI, Python, and scripting is a plus.
Understanding of modern software development practices (CI/CD, testing, Git).
Excellent communication and collaboration skills.
Adaptability and a proactive, solution-oriented mindset.
Why Join The Flex?
Be part of an innovative and fast-growing company revolutionizing the real estate industry.
Opportunity to build a team and establish a long-term presence in one of Europe’s most vibrant cities.
Competitive salary and performance-based incentives.
A chance to grow professionally in a hands-on, entrepreneurial role.
You Should not apply if:
You are looking for a corporate 9 to 5 job
You are political and enjoy gossiping and talking about people behind their backs.
You are looking for a stable and slow dead-end job
You do not aim to be one of the best in the world at what you do
#LI-Remote
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