Stellenangebote für: - LEAD BACKEND ENGINEER BERLIN

About Qdrant Qdrant is a fully remote, cutting-edge technology company building the next generation of AI-native search infrastructure through our open-source vector database and managed Cloud offering. Our platform powers real-time search, recommendation systems, and AI workloads across major cloud providers worldwide. As we scale, we are strengthening core domains across our Cloud platform -- including billing, identity, provisioning, admin workflows, integrations, and usage metering -- and we...

Die Schwarz IT betreut die gesamte digitale Infrastruktur und alle Softwarelösungen der Unternehmen der Schwarz Gruppe. Sie ist somit für Auswahl, Bereitstellung und Betrieb sowie Weiterentwicklung von IT-Infrastrukturen, IT-Plattformen und Business-Anwendungen zuständig. Um die Fachbereiche durch IT-Lösungen optimal bei deren Geschäftsprozessen zu unterstützen, nimmt die Schwarz IT die Anforderungen der Fachbereiche in Beratungsgesprächen auf und erarbeitet gemeinsam mit diesen professionelle u...

*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...

Your mission We at SIDES are looking for a Senior Python Engineer & Tech Lead (m/w/d) to take ownership of our Python Backend ecosystem and shape the future of our technology stack. This is a unique opportunity to build and lead a growing team while staying hands-on with architecture and code. You will be the technical anchor for our Python backend, responsible for: Owning the Python backend ecosystem - Drive architectural decisions for a monorepo with independent REST services Leading critical ...

About Us We are a collective of experienced entrepreneurs investing our time, capital, and operational expertise to build the next generation of a high-impact healthcare venture. Having scaled companies to hundreds of employees and multiple exits, we provide far more than funding -- we work shoulder-to-shoulder with founders to accelerate learning cycles, open doors, and help avoid common early-stage pitfalls. We are building an AI-enabled healthcare automation platform that combines advanced te...

Bonrepublic is an HR software platform that combines goals, recognition, development and incentives to motivate and retain employees. We dream of a world in which the development of employees in organizations is systematically promoted and strategically managed. Bonrepublic was founded in 2020 and has already made this dream a reality for employees across Europe. To drive our dream further, we are looking for support for our team of 25 employees in our Vienna office. As the newest part of the HR...

These tasks are waiting for you Lead our Partner Experience Engineering team, promoting collaboration and ensuring smooth project delivery through close coordination with other teams. Explore new ideas, conduct research, and contribute to proposals (RFCs). Work together with colleagues across teams to design and build Proofs of Concept (PoCs) for innovative technical solutions. Be hands-on in developing new technologies and driving their implementation. Act as a trusted sparring partner to produ...

About Us At Airteam Aerial Intelligence, we build cutting-edge solutions for drone-based 3D photogrammetry, solar planning, and automated data analysis. Our platform combines 3D reconstruction, geospatial analytics, and computer vision to deliver precise and scalable insights to the renewable energy industry. We're looking for a Senior Machine Learning Engineer (Computer Vision) to join our AI team. You'll take ownership of our model lifecycle -- from exploration and experimentation to productio...

Digitalization and energy transition in one sentence? That's what we do at Green Fusion! Our software optimizes heating systems in the real estate sector, helping to combat climate change through digitalization and automation. We reduce emissions and energy consumption, actively advancing the energy transition. Tasks As an ML Engineer, you'll support our Sector Coupling team building the next generation of intelligent Energy Management Systems (EMS). You will enable high-accuracy model predictio...

About NEWWORK NEWWORK is building the world's first AI-native ERP platform: modular, FLOW-orchestrated, and people-centric. Our mission is to redefine ERP -- from rigid, siloed systems of record to a dynamic System of Work that proactively assists, automates, and learns. With modules like HR+, MAP OrgChart, Expenses+, and Finance+, we deliver a unified, intelligent ERP ecosystem that runs enterprises in real time. Tasks Role Summary As a Backend Engineer (Core Platform), you'll design, build, an...

Are you excited by the opportunity to join a badass team building the future of agentic AI infrastructure? Do you thrive on solving hard problems (individually and collectively), yet are humble and hungry to learn and grow within a team on your path to greatness? Do you desire to join a close-knit pack led by SV startup veterans who can accelerate your growth 10X (compared to the corporate trajectory/culture)? If you've answered with 3 resounding "yeses," we want to meet you! You will play a cri...

We're building the next level B2B lead generation platform through state-of-the-art AI Systems and data intelligence. For this we've built a data pipeline keeping tens of millions of company records up-to-date. Based on company specifc signal combinations, we're helping companies discover their next big opertunities before their competitors do. Tasks Main Responsibilities Design and develop microservices for processing millions of web data points daily Optimize and maintain data pipelines that t...

Pactos is a fast-growing B2B SaaS startup reinventing how companies manage their external workforce. Our AI-powered platform digitizes the entire end-to-end process, enabling organizations to manage external staff and staffing providers in a compliant, transparent, and highly efficient way. We are backed by renowened investors (HTGF, StepStone CEO, Peri Owner) and already trusted by best-in-class customers. Are you a versatile developer ready to build something extraordinary? Join us as our soft...

score4more was founded in 2022 to boost sustainability in companies and entire industries. To this end, we are building a digital platform for change agents and companies. We combine the three pillars on this platform: DATA: We summarise the sustainability performance of companies in a profile and make it comparable across industries. KNOWLEDGE TRANSFER: We make sustainable innovations visible. By highlighting solutions, we promote the transfer of knowledge on a global level. PEOPLE: We network ...

Let me introduce... With Sonia, doctors are successful doctors. We create and deploy AI-enhanced solutions that make doctors' lives easier, patients' care better, and healthcare systems more efficient. If you're proactive, impact-driven, and ready to shape the future of healthcare, join us. We're looking for a Lead Full-Stack Engineer (all) to drive the development of our modern, high-performing web applications. You'll take ownership of technical direction, lead a team of engineers, and ensure ...

BlazeSQL - Transforming Data Interaction with AI-Powered Solutions At blazeSQL, we are revolutionizing the way teams access and analyze data. Our AI data analyst enables users--regardless of technical expertise--to effortlessly derive insights from their databases in a self service manner. By connecting blaze to the companies database or data warehouse, teams can transform questions into data insights and dashboards, democratizing data insights throughout the company and radically increasing the...

1KOMMA5° At 1KOMMA5°, we are building Europe's leading clean energy operating system -- connecting solar, heat pumps, energy storage, and charging into one unified platform. As Senior Backend Engineer (Typescript) - Heartbeat AI (m/f/d), you will own the technical architecture behind how we manage, automate, and connect contracts and energy partner integrations across the Heartbeat AI platform. Your focus will be on backend systems, ensuring that customer and energy contracts are reliably integr...

About ZAUBAR Embark on an incredible journey with ZAUBAR, a vanguard in the augmented reality (AR) and artificial intelligence (AI) landscapes, renowned for crafting pioneering AR and AI SDKs and integrations for global enterprise corporations. Our strong foundation has been built with an impressive portfolio of international clients, bearing testament to our groundbreaking strides in the industry. As we continue to grow, we seek experienced lead developers to sculpt unparalleled urban experienc...

We're building a new IoT platform from scratch - a connected parcel locker system that blends embedded devices, cloud services, and real-world interactions. Security is at the heart of this mission. As a Senior Product Security Engineer - Device & Cloud, you'll define and drive the security by design approach across both edge devices and cloud infrastructure. From setting governance standards to shaping secure architectures for communication, updates, and APIs, you'll be the senior voice ensurin...

About you: wealthAPI enables financial multipliers to monetize trust. We provide core financial solutions for large partners and (f)influencers, thereby actively driving the ongoing disruption of the wealth management market. We are looking for a Java engineer who is passionate about investing and finance. Optimally, you bring a good understanding of financial markets or want to deep-dive into the topic. You are able to solve complex financial problems and to directly translate them into code. F...