full stack developer ruby on rails Jobs in Berlin

About UsAt VREY, we're building the EnergyOS for multi-family buildings.Germany has over 3.3 million apartment buildings — and they are the blind spot of the energy transition.

Key job characteristics: On-site/hybrid in BerlinStart ASAPOpen for freelancers as well Deat Applicant, for one of our client - leading company designing AI automation solutions for business, we are looking for a Senior Backend Engineer (Ruby on Rails). You will play a key role in designing and implementing new features, optimizing existing systems, and...

DescriptionAbout Cognee Cognee is building the knowledge engine for AI agents to adapt and learn from feedback. We provide a developer tool for engineers and data scientists to build agentic systems that work in critical workflows – at scale. Our open-source Python SDK runs 1,000,000+ times per month, it is in production at 70+ companies, we reached 12k+...

Are you ready to change the market?At PAIR Finance we're building the AI-driven platform that's redefining debt collection across Europe. We're looking for a senior software engineer who takes ownership end-to-end, is comfortable being the technical driver of a well-defined scope, and is energized by learning a deep, high-stakes domain: the legal processes...

Full-Stack Software Developer Location: Germany (Hybrid) About Us Broadsign is a growing software company with a mission to make buying, selling, and delivering out-of-home media easier than ever. Our software is operated by some of the most successful out-of-home businesses and powers impactful, compelling campaigns seen across the world. Come join us as a...

Anyone AI is recruiting skilled software engineers who also speak German, to work on a project with a leading AI Lab. Qualifications:Advanced professional written proficiency in English3–7 years of professional software engineering experienceStrong proficiency in Python and JavaScript/TypeScript; working knowledge of Java, C#, or GoBackend or full‑stack...

Are you ready to change the market?At PAIR Finance we're building the AI-driven platform that's redefining debt collection across Europe. We're looking for a senior software engineer who takes ownership end-to-end, is comfortable being the technical driver of a well-defined scope, and is energized by learning a deep, high-stakes domain: the legal processes...

Company DescriptionAt Job Pal we build AI-powered chatbots for the recruiting industry that automate the communication between employers and candidates. Our goal is to fundamentally change the candidate experience and make the hiring process more efficient.As a fast-growing tech venture we understand that our greatest asset is to move fast. We ship products...

Our client is Germany's top internet company seeking a Junior Full Stack Developer to become part of their dynamic agile team. They offer a wide range of services across different fields, including fin-tech, insurance, travel, and more. Their active client list is reaching over 15 million users.Location: Berlin, Germany.Type of contract: Full-time, permanent...

Your mission nebenan.de connects real neighbours under their real names. That only works if people feel safe here. Your mission is to keep our users safe: with technical safeguards built into our platform and API, with product features that help neighbours protect themselves, and in close partnership with our Community Management team. You look at everything...

Your missionnebenan.de connects real neighbours under their real names. That only works if people feel safe here. Your mission is to keep our users safe: with technical safeguards built into our platform and API, with product features that help neighbours protect themselves, and in close partnership with our Community Management team.You look at everything...

Über uns Eine gute Software noch besser zu machen ist Dein Ding? Dann bist Du bei uns richtig. Unsere Personalmanagement-Lösung bietet ein umfassendes Funktionsspektrum von Recruitment über Personalverwaltung und Zeitwirtschaft bis zu Talent Management. Dank unseres ebenso engagierten wie kompetenten Teams verfügen wir über eine hervorragende Reputation...

Note: We are only looking for people residing in Germany and do not require visa sponsorship. Its a hybrid role. Tasks and Responsibilities Develop high-performance, tested back-end web application components using Python.Contribute to front-end web application development using TypeScript and React.Develop and maintain continuous...

Join ACAI (Advanced Calendar Improvement), a team dedicated to making day-to-day practice operations more efficient and less mentally exhausting for healthcare professionals and their teams.Practice operations are often fragmented across post-its, emails, SMS, phone calls, oral instructions, and individual memory. This makes it difficult for teams to know...

**Company Description** As a Full Stack Developer, you will contribute to the continuous development of our search engine, intelligence platform, and monitoring solutions. Together with developers, product managers, and designers, you will build AI-driven products and services for our B2B clients. You will take ownership of both backend and frontend topics...

Anyone AI is recruiting skilled Full-Stack Developers to work on a project with a leading AI lab. Qualifications:Advanced professional written proficiency in English3–7 years of professional software engineering experienceStrong proficiency in Python and JavaScript/TypeScript; working knowledge of Java, C#, or GoBackend or full‑stack development...

Hybrid remote model - working with AI - Salary: €75,000 - €110,000Area:Berlin and surroundingsA fast-growing, Berlin-based technology company is developing a leadingplatform for analyzing brand visibility in generative AI search engines (such asChatGPT, Perplexity, Claude, Gemini). Over 100 teams, agencies and brands already usethis solution to make AI...

About Cognee Cognee is building the knowledge engine for AI agents to adapt and learn from feedback. We provide a developer tool for engineers and data scientists to build agentic systems that work in critical workflows – at scale. Our open-source Python SDK runs 1,000,000+ times per month, it is in production at 70+ companies, we reached 12k+ GitHub stars...

Your challengeAs a Senior Full Stack Software Engineer (all genders), you will play a key role in building and evolving Hubject's cloud-native eMobility platform. Working across backend, frontend and cloud infrastructure, you will design, develop and operate scalable, secure and high-performing applications that power electric mobility worldwide. You will...

Industry: FinTech / Media / Stock Market InformationProduct: Ad-supported financial information platform and app for market data, news, and virtual portfoliosOur client is a prominent financial information and media company in Germany. They operate a comprehensive financial portal, offering real-time and historical stock market data, news, and analytical...