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JOB DETAILS

Full-Stack Software Developer (all genders)

CompanyFairmas GmbH

LocationBerlin

Work ModeOn Site

PostedJune 4, 2026

About The Company

Fairmas GmbH, headquartered in Berlin, with offices in Spain and North America, develops financial planning, controlling and management reporting solutions specifically for the hotel industry. It is the leading provider of financial BI solutions for hotel operators and investors founded in 2003. Fairmas’ cloud-based BI solutions are easily incorporated into the hotel's existing IT software environment and efficiently integrate with other third-party systems, including major property management systems (PMS), accounting systems, revenue management systems, and more. Fairmas also provides the data management for hotel assets to standardize and automate the entire portfolio performance reporting. Fairmas has been a strong partner to the hospitality industry with over 18,000 satisfied users in more than 5500+ hotels worldwide – from privately owned hotels to leisure hotels and global chains. A team of 70+ hotel and IT specialists, as well as experienced managers from within the industry ensure hospitality expertise with Fairmas’ innovative solutions to support customers in achieving financial goals and increase profits. Company: Fairmas GmbH Address: EUREF-Campus 13, 10829 Berlin, Germany Telephone number: +49 30 322 940 5 20 Fax number: +49 30 322 940 5 21 Web: www.fairmas.com E-mail adress: office@fairmas.com Legal representative: Niels Schroeder, Managing Director Commercial register: Local court Charlottenburg in Berlin, HRB 90 961 V.A.T. Id.No.: DE231831626

About the Role

What we are looking for

Become part of Fairmas as a Full-Stack Software Developer (all genders) and help shape the future of our SaaS platform. From intuitive frontends to robust backend services, you'll build features end-to-end, solve real-world challenges, and contribute to software used by international hotel teams.

Location:
Wherever you are – in Berlin/ Brandenburg | Full-time or part-time | Monday to Friday | Work-life balance guaranteed:

Have you already built software through internships, working student roles, open-source contributions, freelance work, or personal projects? Do you enjoy solving technical challenges, shipping features, and working across the full stack in a collaborative SaaS environment?

Then Fairmas is the right place for you.

What we have in store for you

Balance: No weekend work, no shifts, no overtime.
Appreciation: Fair pay and a safe working environment.
Flexibility: Work remotely or from our modern Berlin office – whichever suits you best.
Understanding: Many of us come from the hotel industry ourselves.
Purpose: Help hotels around the world stay economically successful.
Sustainability: Our offices are eco-friendly and perfectly connected.
Mobility: We subsidize your Deutschlandticket.
Growth: Through team events and personal development – we support what makes you unique.

Your background

Foundation: Practical software development experience beyond university coursework, e.g. via internships, working student, freelance work, open-source contributions, research, or personal projects
Ownership: Comfortable taking responsibility for your code and the features you build
AI Mindset: Effective practitioner of AI-assisted development, balancing rapid iteration through AI tools with disciplined engineering decision-making
Stack: Hands-on experience with React, TypeScript, .NET, and relational databases, or equivalent experience with comparable technologies
Tooling: Familiar with modern development tools, workflows, and engineering practices
Execution: Comfortable turning requirements into working, tested, and refined solutions
Quality: Passion for clean, maintainable, and scalable software
Collaboration: Team player who enjoys exchanging ideas, giving and receiving feedback, and building solutions together
Communication: Able to explain technical concepts clearly and work effectively with both technical and non-technical colleagues
Language: Confident English for day-to-day collaboration in an international tech environment

How you make an impact

AI-Augmented Engineering: Leverage AI-powered development tools & workflows to accelerate delivery while maintaining high standards for code quality, security, testing, maintainability, and system architecture.
Full-Stack Development: Design, build, and maintain modern web applications across frontend and backend systems.
Frontend Engineering: Develop user-facing applications using React, TypeScript, and modern component-based architectures.
Backend Engineering: Build and evolve backend services and APIs using .NET / C# in a distributed system-landscape
Data Management: Work with relational databases, with a strong preference for PostgreSQL experience.
Infrastructure & Reliability: Contribute to scalable, resilient, and highly available systems; experience with PostgreSQL clustering technologies (e.g., Patroni) and infrastructure set-ups are advantageous.
Code Quality & Problem Solving: Analyze, debug, review, and improve both existing and AI-generated code to ensure reliability and performance.
Ownership & Delivery: Take end-to-end responsibility for delivering and maintaining solutions, proactively identifying issues, asking effective questions, and driving work forward independently.
Engineering Excellence: Apply clean code principles, automated testing practices, version control (Git), and modern software development workflows.
Product Development: Collaborate closely with stakeholders to understand user needs and translate them into valuable product capabilities.
Team Collaboration: Participate actively in logical, architectural and technical discussions, as well as knowledge sharing to support a high-performing engineering culture/ team.
Continuous Improvement: Contribute to ongoing learning, experimentation, and process improvement within an experienced product-focused engineering organization.

Get in Touch!

Ready to Join Us?
Send us your CV – feel free to include your earliest possible start date. If you have any questions, reach out to us at hr@fairmas.com – we’re happy to help.
You don’t meet every single requirement or have gaps in your resume? No problem!
Apply anyway – what matters most to us are your motivation, values, and personality.

About us

Fairmas GmbH and its affiliates is a hotel software company specializing in web-based solutions for financial planning, controlling, and management reporting. Since our founding in 2003 in Berlin, our dedicated team, including hoteliers, IT experts, and professionals from a variety of backgrounds, has been supporting more than 18,000 users across 5,500 hotels worldwide.

We take pride in delivering first-class service built on years of experience. At Fairmas, we foster a company culture defined by transparency, mutual respect, and strong team spirit. For us, work-life balance isn’t just a buzzword — it’s essential to maintaining long-term motivation and creativity. We firmly believe that our employees are the driving force behind Fairmas, and their ideas and contributions actively shape our company’s future.

Key Skills

ReactTypeScript.NETC#PostgreSQLRelational DatabasesAI-Assisted DevelopmentGitAutomated TestingClean CodeAPI DesignFrontend EngineeringBackend EngineeringSystem ArchitectureSoftware TestingEnglish Communication