You are the primary guardian of the technical boundary between the Nextcloud Office frontend and the LibreOffice C++ core. Your job is to solve the "impossible" architectural hurdles that arise when syncing a massive, stateful C++ engine with a modern, real-time Node.js environment. 

Tasks

• The Blueprint: Design the communication protocols (Websockets, WOPI, Shared Memory) that allow Node.js to command the C++ core with sub-10ms latency.
• Digital Archaeology: Reverse-engineer legacy C++ components to find the "Source of Truth" for complex document states and map them to our modern JS architecture.
• AI Orchestration: Curate the technical context (RAG) for our AI sub-agents. You ensure the LLMs "understand" the unique quirks of the LOKit core so the rest of the team can code with precision.
• High-Stakes Review: Act as the final gatekeeper for all bridge-related code. You don't just check if it works; you check if it's mathematically sound for real-time collaboration.

Qualifications

• Expert-level C++ (Modern standards + Legacy understanding).
• You likely have experience in Game Engine Architecture.
• Experience with High-Frequency Trading—environments where the "cost of abstraction" is measured in milliseconds.
• Hands-on experience with AI development tools and AI orchestration, including managing RAG-based technical context to improve code generation accuracy and support engineering workflows.

Benefits

• Hybrid working model.
• Flexible working hours through trust-based working hours.
• At some locations a subsidized canteen and various free drinks.
• Modern office space with very good transport connections.
• Various employee discounts for activities and products.
• Employee events such as summer and winter parties, as well as workshops.
• Numerous training and development opportunities.
• Various health offers, such as sports and health courses.

You are the architect of developer velocity. Your goal is to eliminate every second of friction in the engineering lifecycle, ensuring that a complex, multi-language (C++/Node.js) project feels as lightweight and responsive as a modern greenfield app. You don’t just manage servers; you manage the "AI-Ops" infrastructure that allows our Specialists and Staff engineers to work at 3x traditional speeds.

Tasks

• Environment Mastery: Design and maintain a "5-minute onboarding" workflow using Docker and DevContainers. You ensure that "it works on my machine" is a guarantee for every new hire.
• AI-Ops & RAG Management: Manage the team’s local AI infrastructure, including Retrieval-Augmented Generation (RAG) clusters, Cursor Skill libraries, and the custom documentation indexing that feeds our LLMs.
• The Bridge Pipeline: Automate and optimize the high-complexity compilation and hot-reload cycle between the OnlyOffice C++ core and the Node.js/JavaScript frontend.
• Autonomous CI/CD: Build "intelligent" pipelines that don't just report failures but use AI to analyze logs and automatically suggest (or apply) patches for brittle legacy build steps.
• Performance Guardrails: Implement "Continuous Profiling" in the build chain to catch 16ms frame-budget violations before code ever reaches a pull request.

Qualifications

• Advanced proficiency in Docker, GitHub Actions/Jenkins, and Makefile/CMake environments.
• Expertise in Python, Go, or Rust for building high-performance internal automation tools.
• Strong experience with Modern Web Tooling (Vite, Webpack, esbuild) and optimizing large-scale JS monorepos or project builds tests, CI/CD pipelines, dependency installation, local development workflows.
• Familiarity with managing Vector Databases or LLM self-hosting (Ollama/LocalAI) is a significant advantage.
• The AI Factor: You are the team’s "Prompt Architect" for infrastructure. You will use models like Claude Opus 4.6 Max and specialized DevOps agents to automate the "toil" of system administration, focusing your human intelligence on systemic optimizations and creating a seamless "Flow State" for the coding team.
• The Gaming Edge: We highly value experience from AAA Game Build Engineering. If you have managed the automated pipeline for complex, multi-platform assets and codebases where "Build Time" and "Asset Cooking" are primary KPIs, you have the exact DNA we need for this high-performance office suite.

Benefits

• Hybrid working model.
• Flexible working hours through trust-based working hours.
• At some locations a subsidized canteen and various free drinks.
• Modern office space with very good transport connections.
• Various employee discounts for activities and products.
• Employee events such as summer and winter parties, as well as workshops.
• Numerous training and development opportunities.
• Various health offers, such as sports and health courses.

As a member of STRATO Customer Service, you are not the proverbial “telephone order taker”, quite the opposite. Regardless of whether you already have previous experience or simply fancy something new and are joining us as a career changer: With us, you will be trained to become an Internet professional! You will help our customers to be successful with their web presence by supporting them in solving problems and thus creating a positive service experience.

Tasks

• In order to be well prepared for the work, you will undergo a 4-week induction program and receive comprehensive product, communication and writing training, among other things.
• You will advise our customers on questions about their products by phone, email and ticket system.
• As a customer and product expert, you will identify optimization potential and make suggestions for improvement.
• Your commercial and technical expertise is in demand! - You pass on the input collected from our customers about the products and our processes to our product management and thus make an important contribution to the continuous improvement of our offers.

Qualifications

• Strong communication skills and very good written and spoken German (C1).
• You are interested in technical topics and want to learn more about internet products such as web hosting, e-commerce, cloud.
• You have your heart in the right place, are always friendly and courteous and keep your cool even in challenging situations.
• Completed training is an advantage, but not a must.
• Experience in direct or telephone customer contact is an advantage.
• Willingness to work in shifts (incl. weekends and public holidays).

Benefits

• Support from an experienced colleague during the induction phase (on-the-job training).
• You will receive 30 vacation days per year for ideal relaxation.
• A hybrid working model and the option to submit preferences for shift planning.
• Numerous development opportunities within the entire STRATO Group (STRATO AG, STRATO Customer Care GmbH and Cronon GmbH) as well as language courses (English).
• Discount on gyms (Fitness First, SuperFit, FitX).
• Employee discount on STRATO products and 1&1 products.
• Vouchers/gifts for special occasions and anniversaries (wedding, birth).
• Bicycle leasing with Eurorad (taxable as a non-cash benefit).

The Mission: Your goal is to design a testing architecture that can keep up with an AI-augmented development team while ensuring the "Source of Truth" in collaborative documents is never corrupted.

Tasks

• The Validation Blueprint: Design the strategy for testing real-time synchronization (CRDT/OT) and "Semantic Merges." You define how we simulate large numbers of concurrent users editing a single document.
• Visual Regression Architecture: Establish the framework for "Pixel-Perfect" testing of the Canvas-based rendering engine. You ensure that a performance tweak doesn't accidentally move a spreadsheet border by 1 pixel.
• Performance Benchmarking: Build the "Continuous Profiling" pipeline. You define the thresholds for our 16ms frame budget and ensure the CI/CD pipeline fails if a PR introduces "jank."
• AI Strategy: Define the Test-Driven Prompting (TDP) standards for the team. You ensure the AI-generated tests are meaningful and cover edge cases in the C++/JS bridge.

Qualifications

• Expertise in systems-architecture
• Deep understanding of distributed systems and how to test for race conditions and "eventual consistency."
• Experience in Game QA Automation or FinTech (where state accuracy is life-or-death).

Benefits

• Hybrid working model.
• Flexible working hours through trust-based working hours.
• At some locations a subsidized canteen and various free drinks.
• Modern office space with very good transport connections.
• Various employee discounts for activities and products.
• Employee events such as summer and winter parties, as well as workshops.
• Numerous training and development opportunities.
• Various health offers, such as sports and health courses.

Tasks

You`ll configure products for STRATO online shops across 6 international markets:

• Product setup and tariff maintenance in product catalog.
• Testing campaigns.
• Project monitoring for STRATO projects in JIRA.
• Documentation in Confluence.

Qualifications

• Enrolled in Business Informatics, Computer Science, or related field.
• Analytical thinking and structured working style.
• Good German and English skills.
• Reliability and thorough work are central to our team.

What we offer:

Flexibility: Working hours aligned with your studies.
Real Responsibility: Hands-on work on live systems with millions of users, independent
project ownership after onboarding.
Learning: Insight into e-commerce architectures, close collaboration with experienced
colleagues.
Team: International, agile team with direct contact to team lead and colleagues.

Benefits

• Hybrid working model.
• Sustainable work location in Friedrichshain.
• Free "Deutschlandticket".
• Discount on gyms (Fitness First, SuperFit, FitX).
• Employee discount on STRATO products and 1&1 products.
• Bicycle leasing with Eurorad.
• Health promotion offers such as group accident insurance, flu vaccinations, eye check-ups and co-payment for workplace glasses.

Tasks

• Goods Receiving & Inventory: You will receive deliveries (server racks, hard drives, cables), check them for completeness, and enter the data into our asset management system.
• Hardware Handling: You will assist with unboxing and preparing IT equipment for installation (e.g., mounting rails, labeling).
• Warehouse Optimization: You will maintain an overview of our small parts warehouse and ensure that consumables (SFP modules, patch cables) are always readily available.
• Shipping Logistics: You will prepare defective hardware (RMAs) for return shipment to manufacturers, ensuring secure packaging.

Qualifications

• Education: You are enrolled in a program in logistics, business administration, business informatics, or a technical field.
• Attention to detail: You work with precision—a misplaced hard drive or a mislabeled cable can have major consequences in the data center.
• Hands-on attitude: You don’t shy away from moving boxes or getting to work in the server room.
• IT Affinity: You don’t need to be a computer science expert, but you should know what a server looks like and be proficient with MS Office (especially Excel).

In order to simplify and accelerate our application process, we would appreciate it if you could provide us with your enrollment certificate directly with your application.

Benefits

• Hybrid work model.
• Flexible working hours based on trust.
• A variety of free beverages.
• Modern office spaces with excellent public transportation access.
• Various employee discounts on activities and products.
• Employee events such as summer and winter parties, as well as workshops.
• Numerous training and development opportunities.
• Various wellness programs, such as sports and health classes.