You are interested in the position as Software Engineer (m/w/d) at reltix GmbH ? On Instaffo, you can apply for this and other jobs with ease. Create your profile in under 2 minutes and start the application process with just a few clicks. Please note that this position requires work authorization for Germany . The language requirements for this position are: German - Fluent (C1), English - Fluent (C1) . The estimated salary range from XING does not necessarily correspond to the salary range of this job offer. We are building the operating system for the German property management industry, creating an AI-enabled service business that replaces outdated, paper-based processes. As a backend-first engineer, you will own meaningful parts of the product end-to-end, working on a small, senior team with a direct line to the founders to solve real operational problems. Activities Design and build the backend services and APIs at the core of the product: data models, business logic, and the integrations everything else depends on. Ship features end to end, from schema and API to the behaviour users experience, and grow into the frontend as far as your curiosity takes you. Build the systems that power our AI surfaces, with the full context of the property available to the voice agent, the owner chatbot, and the manager software. Integrate with third-party systems across the real estate and financial ecosystem. Work directly with the founders and operations team to decide what to build, then ship it fast and iterate. Requirements 3+ years of professional engineering experience, with real depth on the backend. Strong in a modern backend language (preferably Golang/Python), comfortable designing data models, APIs, and services from scratch. Experience shipping in a modern web stack (React + TypeScript). Solid with relational databases and a good sense for structuring data well. Curiosity about the frontend and a genuine wish to go full-stack. A pragmatic, shipping mindset and ownership as a default. Nice to have (IaaS & IaC): AWS (or equivalent cloud), Terraform (or Pulumi), and comfort working on platform/infrastructure when needed. Bonus: AI-powered product features, event-driven architectures, third-party API integrations, or early-stage experience. Team You will join a small, senior engineering team of over 30+ people that ships fast. We operate with tight feedback loops, working directly with the founders and the operations team to build software for an industry that has never had any. Application Process Our hiring process for tech roles runs directly through our Head of Product and includes the following steps: (1) Initial conversation with our Head of Product to get to know you, your background, and the role. (2) On-site case study at our headquarters in Düsseldorf, where you'll work on a real problem - remote is only an option if travel isn't feasible. (3) Feedback and final decision in direct exchange with our Head of Product. About the Company Reltix is a fast-growing PropTech startup based in Düsseldorf, on a mission to transform the property management industry - and we build our own technology to do it. Rather than buying off-the-shelf software or acting as a traditional property manager, Reltix develops its own internal operating system in-house, covering everything from homeowners' association (WEG) management to rental management. As we deliver the service, we automate it - and as we automate it, we embed AI into every workflow. This means our technology isn't a product built for external customers to buy - it's the platform that runs the entire company, with real, immediate impact on how we work every day. With a team of nearly 50 people across offices in Düsseldorf, Essen, and Frankfurt, Reltix already manages around 5,000 residential units and has secured significant funding to fuel further growth. We combine a strong entrepreneurial culture with a clear vision: replacing outdated, paper-based processes with smart, digital workflows and AI-powered tools. At Reltix, you get ownership from day one, work directly with the founding team, and see your work translate into product and business impact fast.
Software Engineer (m/w/d) in Düsseldorf Arbeitgeber: Instaffo GmbH
Als Arbeitgeber bieten wir dir die Möglichkeit, in einem dynamischen und innovativen Umfeld zu arbeiten, das auf Eigenverantwortung und Teamarbeit setzt. Unsere offene Unternehmenskultur fördert den Wissensaustausch und die persönliche Weiterentwicklung, während du an spannenden Infrastruktur- und Security-Projekten arbeitest. Zudem hast du die Chance, dich zum Deputy Architect weiterzuentwickeln und deine technischen Fähigkeiten in einem unterstützenden Team auszubauen.
