Stellenangebote für: - SENIOR BACKEND SOFTWARE ENGINEER BERLIN

Über uns Für unseren Kunden suchen wir im Rahmen der Direktvermittlung einen erfahrenen Senior Software Engineer (m/w/d) Backend, die leistungsstarken und skalierbaren Backend-Systeme entwickelt und kontinuierlich weiterentwickelt. In dieser Position übernehmen Sie Verantwortung für die Konzeption und Implementierung moderner Softwarearchitekturen, optimieren bestehende Services und sorgen für stabile sowie performante Anwendungen. Aufgaben Entwicklung, Weiterentwicklung und Optimierung moderner...

1KOMMA5° At 1KOMMA5°, we pursue a clear vision: Living on wind and sunlight forever for free. To make this a reality, we are building the energy system of the future with Heartbeat AI. Want to be part of it? We bring together regional craftsmanship and scalable software: We don't think of solar, batteries, heat pumps, and e-mobility as isolated components, but control them as an intelligent, integrated overall system in our virtual power plant. Directly connected to the electricity market - in r...

Join our VERBI Team as a Senior Backend Engineer (m/f/x)! We are VERBI Software GmbH - the company behind MAXQDA - the #1 software for qualitative and mixed methods data analysis. We provide researchers, universities, and companies with an innovative and intuitive tool so they can accomplish great things. Professional service and a close connection to our community has paid off: since our founding in 1989 we have grown steadily and sustainably as a family company. Tasks You develop our AWS backe...

At Routine Labs, we are building Europe's first secure, auditable, and EU-compliant automation infrastructure for legacy systems. We're taking a practical approach to improving how engineers work with AI systems. Combining LLMs with familiar software engineering methods to make it easier for people to build, modify and maintain software automations. Our platform lowers the effort required to turn natural-language instructions into deterministic, testable code that can interface with and automate...

Über uns Für unseren Kunden suchen wir im Rahmen der Direktvermittlung einen erfahrenen Senior Software Engineer (m/w/d) Backend, die leistungsstarken und skalierbaren Backend-Systeme entwickelt und kontinuierlich weiterentwickelt. In dieser Position übernehmen Sie Verantwortung für die Konzeption und Implementierung moderner Softwarearchitekturen, optimieren bestehende Services und sorgen für stabile sowie performante Anwendungen. Aufgaben Entwicklung, Weiterentwicklung und Optimierung moderner...

adesso steht für IT-Exzellenz und damit auch für exzellente Entwicklungsmöglichkeiten für alle adessi. Wir wachsen gemeinsam und lernen voneinander - an unseren Projekten, im Team und mit herausragenden Trainingsangeboten. Wir haben IT im Herzen, die Branche im Blick und den Erfolg unserer Kunden im Sinn. Denn erfolgreiches Geschäft entsteht durch innovative Ideen, zukunftsfähige Strategien und kluge IT-Lösungen. Immer sind dabei Menschen beteiligt, die etwas bewegen wollen und das einfach mache...

Verwaltungssprung is a Berlin-based GovTech company developing AI-powered software solutions to simplify and digitize administrative processes. Our platform enables citizens and public institutions to access secure, user-friendly, and fully digital public services. To support the growth of our organization, we are looking for a Senior Full Stack Engineer (f/m/d) with strong expertise in modern frontend and backend development, scalable system architectures, and high-quality software engineering ...

You are interested in the position as Senior Software Engineer at FICUS HEALTH? On the job platform Instaffo, you can apply for this and other jobs with ease. Create your profile in under 3 minutes and start the application process with just a few clicks. Please note that this position requires EU work authorization. The language requirements for this position are: English - Fluent. At Ficus Health we're building for the hospital of the future. Using the latest innovations in artificial intellig...

We are looking for a (Senior) Backend Engineer (C#/.Net) (m/f/d) Join our team at our location in Berlin – hybrid working conditions available. Our solutions contribute to flexible and customer-friendly payment alternatives. We offer consumers the opportunity to choose when and how they want to pay, whilst guaranteeing a steady and predictable cashflow for merchants. Our products make us proud, but not content and we have high ambitions for our existing as well as upcoming products. We have a st...

These tasks are waiting for you You'll be a core contributor to the Admin Experience team. Design and develop secure, well-tested features across a TypeScript/Node.js backend and React frontend Contribute to our API-first infrastructure -- the engine behind how partners integrate insurance into their products Build AI-powered features using Claude and Gemini -- from intelligent claims automation to LLM-assisted OPS tooling we run in production today Design and implement agentic workflows -- mult...

We dig Web3. WeAreShovels.com is a Web3 engineering studio building and securing production-grade Web3 protocols, infrastructure, and tooling. We help Web3 builders dig deep, uncover value, and ship Web3 products that last - fast. We're looking for a Senior Web3 Frontend Engineer (Lead) who enjoys building great interfaces, leading others, and helping customers succeed. Tasks What you'll do Lead frontend architecture for complex Web3 applications (dashboards, protocol UIs, admin panels) Build in...

Du bist interessiert an der Stelle als Senior Software Engineer (m/w/d) in Consulting bei L21s GmbH? Auf der Jobplattform Instaffo kannst du dich für diesen und weitere Jobs ohne großen Aufwand bewerben. Erstelle dein Profil in unter 3 Minuten und starte den Bewerbungsprozess mit nur wenigen Klicks. Bitte beachte, dass für diese Stelle eine Arbeitserlaubnis für Deutschland erforderlich ist. Die Sprachanforderungen für diese Stelle sind: Deutsch - Muttersprachliches Niveau Als Senior Engineer bei...

Wir sind ein junges Health-Tech-Startup, das es Ärzt:innen ermöglicht, neue Distributed Healthcare Lösungen anzubieten, sodass Patient:innen in abgelegenen und unterversorgten Regionen Zugang zu Gesundheitsversorgung erhalten. Dies ist deine einzigartige Chance, Teil eines gut finanzierten Health-Tech-Unternehmens in der Frühphase zu werden - mit direktem Einfluss auf die Gesundheit unserer Patient:innen und unser Tech-Produkt von Grund auf mitzugestalten. Wir sind bereits im Einsatz und versorg...

1KOMMA5° We are looking for you to join our tech team in Berlin, Munich, or Hamburg. 1KOMMA5° is creating Germany's largest one-stop-shop for the sale, installation, and servicing of solar panels, heat pumps, electricity solutions, and charging infrastructure. And the best part? They are all interconnected! Become a part of our mission and learn about our Product & Tech team! Deine Position As a mobile engineer at 1KOMMA5°, you will be one of the first members of a cross-functional team alongsid...

*Make sure that you add your portfolio as a URL, otherwise your application will be rejected. Are you a senior developer who crafts elegant frontends with React & TypeScript, and thrives in an engineering culture of innovation and ownership?* At TextCortex AI, you'll join a core team of ambitious builders on a mission to transform how organizations harness AI. We've scaled from a few thousand users to millions in just two years, earning recognition as a Top 10 AI product of 2025 on G2 and servin...

Decentriq is the rising leader in data-clean-room technology. With Decentriq, advertisers, retailers, and publishers securely collaborate on 1st-party data for optimal audience targeting and campaign measurement. Headquartered in Zürich, Decentriq is trusted by renowned institutions in the DACH market and beyond, such as RTL Ad Alliance, Publicis Media, and PostFinance. Our analytics & ML pipelines are the heartbeat of this platform. Built in Python (pandas) and Apache Spark, they run either in ...

Are you tired of working on products you don't really care about? Do you want to work on something that has a positive impact on humanity and our planet? Do you like to get stuck in and are you passionate about coding? Then we have a great opportunity for you. At Global Changer, you will work on a solution with a clear goal: helping companies reduce emissions faster. We focus on one of the biggest levers to fight the climate crisis and work mainly with large organisations. We are backed by well-...

Wir sind adesso business consulting, das SAP-Powerhouse der adesso Group. Als führender IT-Dienstleister stehen wir für Kundenorientierung, Wachstum und starke Perspektiven. Unser größter Erfolgsfaktor? Das sind unsere Mitarbeitenden! Als SAP-Profis begleiten wir kundenspezifische Herausforderungen und unterstützen die Auswahl, Anpassung und Implementierung von SAP-Lösungen. Unsere langjährige Erfahrung kombiniert technisches und Branchen-Know-how mit strategischem Denken und kreativen Ideen. Da...

1KOMMA5° At 1KOMMA5°, we pursue a clear vision: Living on wind and sunlight forever for free. To make this a reality, we are building the energy system of the future with Heartbeat AI. Want to be part of it? We bring together regional craftsmanship and scalable software: We don't think of solar, batteries, heat pumps, and e-mobility as isolated components, but control them as an intelligent, integrated overall system in our virtual power plant. Directly connected to the electricity market - in r...

Über uns Unser Kunde in Berlin entwickelt und betreibt eine moderne AI-Software Suite für das Ingenieurwesen. Die Plattform unterstützt Unternehmen bei der Planung, Bauüberwachung und im Projektmanagement komplexer Bau- und Infrastrukturprojekte. Zur Weiterentwicklung der bestehenden Produktlandschaft wird ein Senior Laravel/PHP Developer (m/w/d) gesucht, der Erfahrung mit modernen AI-Tools und AI-gestützten Entwicklungsprozessen mitbringt und diese produktiv in Softwareentwicklung, Automatisier...