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VAARHAFT is a young startup that deals with the authentication of digital media. In an age of publicly accessible generative AI, creating deepfakes has become child's play, meaning that the authenticity of digital images and videos can no longer be blindly trusted. Our mission is to preserve the credibility of digital media and protect companies from fraud involving manipulated images, videos, or documents with our solutions. We are active in all industries where the credibility of digital images is essential. Among other things, we prevent image-based insurance fraud and uncover document forgeries in the banking sector. As a Backend Developer (f/m/d), you will play an important role in direct product development and work at the heart of VAARHAFT to realize our vision. You will work on our main product, the “Fraud Scanner,” ensure the smooth live operation of the API, and continuously develop it further. If you want to contribute your motivation and innovative ideas for the protection of credible digital media, you've come to the right place. Tasks Your Tasks: Development and maintenance of backend components and systems using Python. Administration and maintenance of AWS infrastructures, including EC2 instances, API gateways, VPC, S3, and DynamoDB. Containerization of applications with Docker and administration of Docker environments. Testing and debugging to ensure high software quality and performance. Support with troubleshooting and providing technical solutions. Requirements Your qualifications: Bachelor's degree in computer science, software engineering, or a related field. At least 1 to 2 years of proven experience as a backend engineer or in a similar role with a focus on developing scalable web applications or platforms. Very good knowledge of one or more programming languages, such as Python, Shell, Terraform, Flutter. Proficient in AI application layers (e.g., Gemini, ChatGPT, Cursor, Claude-Code, Codex, Gemini-CLI). Knowledge of SQL databases such as PostgreSQL or MySQL and NoSQL databases such as DynamoDB. Initial experience working with AWS services such as EC2, DynamoDB, and API Gateway. Problem-solving and analytical thinking skills. Ability to quickly learn new technologies and stacks. Excellent communication and teamwork skills and the ability to collaborate effectively with cross-functional teams. Self-motivated and detail-oriented, with a passion for technology. Nice to have: Experience with containerization technologies, especially Docker. Nice to have FastAPI experience. Benefits Your benefits: Insights into a young startup where you can actively contribute New challenges with a steep learning curve in a motivated team and a fast-paced work environment Flat hierarchies and individual talent development Real startup life in our co-working spaces in the cities of Hamburg and Berlin, as well as flexible working hours and the option to work remotely up to 100% of the time Regular team-building events Urban sports program At VAARHAFT, we value diversity and equal opportunity. We welcome applications from people of all backgrounds, regardless of gender, ethnicity, religion, beliefs, disability, age, or sexual identity. It is important to us to create an inclusive and non-discriminatory work environment where everyone can fully develop their talents.
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Most developer ads you'll see are written in English: 18,397 of the 24,795. That doesn't tell you whether the job itself requires you to speak English or work in English daily, so read each posting carefully. Don't assume the language of the ad matches the language of the team.
The employers posting the most developer roles are Link Group (369 jobs), Upvanta (257), jobgether (226), and OfferZen (212). If you're applying to any of these, research their hiring patterns. They move fast and post often, which means they're either scaling hard or replacing people who didn't fit.
In your interview, expect this: 'Walk me through the last time you had to debug something that took you more than an hour. What was it, what did you try first, and what would you do differently?' Hiring managers ask this to see if you think systematically or just try random fixes. Have a real example ready with specifics.