Server-Sent Events Experts in Germany
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Meet FRATCH Experts in Germany, who have recently used Server-Sent Events
Niklas Witzel
Last position:
AI Engineer at Tensora GmbH
- Designed and developed a multi-tenant SaaS platform enabling organizations to build their own knowledge bases and chat with brand-customized AI assistants (white-label approach with dynamic branding per organization).
- Implemented a scalable RAG architecture with a GPT-4o tool-use loop, hybrid semantic search, and strict tenant isolation at database and search index level.
- Built persistent, project-like chat sessions including a streaming API (SSE), multilingual support, and speech input/output (STT/TTS).
- Delivered the cloud infrastructure as Infrastructure-as-Code, fully automated per-customer CI/CD pipelines, and an onboarding process for new tenants.
Technologies used: Python, FastAPI, Pydantic (v2 noted), Next.js, React, TypeScript, Tailwind CSS, OpenAI / LLMs (GPT-4o), Azure AI Search, Cosmos DB, Azure Blob Storage, Azure Cognitive Services Speech, Azure App Service, Azure Container Registry, Retrieval-Augmented Generation (RAG), Server-Sent Events (SSE), Docker, Terraform, GitHub Actions, REST, OpenID Connect (OIDC), Multi-Tenancy
Benjamin Matschke
Last position:
Founder, system architect, and main developer at Institute for Artificial Study (IAS)
- Expert-supervised AI systems for scientific reasoning, model evaluation, and research workflows.
- Built the IAS Problem Solver, an orchestrated system for difficult mathematical reasoning; it achieved 84% in one submitted answer set on the Leipzig mathematics benchmark.
- Built a resumable state-machine pipeline for research-grade mathematics benchmark generation: source selection, LLM-agent-based phenomenon discovery, task synthesis, gold-answer and certificate generation and validation, probing, repair, human feedback, and quality gates, targeting tasks that are difficult, natural, verifiable, and cost-effective.
- Current work extends this into budget-aware AI research workflows for real scientific problems with expert review.
Tech stack: Python, OpenAI/OpenRouter-compatible APIs, embeddings, RAG, SQLite.
Jorge Nuricumbo
Last position:
Senior Developer at SafeXSmart KI Solutions UG
AI Platform Backend – Senior Developer
Brought in to design and build a backend for an AI platform from scratch, including multi-provider LLM orchestration and real-time infrastructure for AI influencer personas at scale.
Tasks and responsibilities
- Architected and implemented a multi-LLM orchestration layer with Semantic Kernel to integrate GPT-4 and other providers for core platform logic and AI influencer personas, reducing model-switching overhead by abstracting provider APIs behind a single interface.
- Designed and developed a backend from scratch in C# / .NET 10, including domain modeling with DDD, a versioned RESTful API layer, and cloud infrastructure setup on Azure.
- Built a real-time chat infrastructure with Server-Sent Events (SSE), message persistence, and delivery guarantees for live operation of AI influencer personas at scale.
- Developed a media management service with integration of cloud object storage for upload and retrieval of influencer-generated content.
- Created an integration and unit test suite with data seeding for reliable regression testing across all core platform flows, significantly reducing the production error rate.
Tools and technologies: C#, .NET, ASP.NET Core, Python, TypeScript, MySQL, Semantic Kernel, EF Core, Minimal APIs, LLM Orchestration, Prompt Engineering, Agentic AI, Generative AI, AI-Assisted Engineering, Claude Code, GitHub Copilot, Google Gemini, OpenAI API, Ollama, Redis, Azure, Azure Container Apps, Azure Database for MySQL, Docker, GitHub Actions, Clean Architecture, Vertical Slice Architecture, CQRS, Domain-Driven Design, REST API, xUnit, Integration Testing, Unit Testing, Jira, Confluence, Scrum
Michael Dobmeier
Last position:
Sole Proprietor at Unternehmens- und Managementberatung Michael Dobmeier
- Advising and technical implementation of AI integration and workflow automation for small and mid-sized businesses
- Building a multi-tenant AI agent platform as a product base
- Combining strategic consulting, technical implementation, and team enablement
Project examples:
- Development and architecture of the SOLUMiDO Agent-UI platform for integrating digital colleagues into business processes (Next.js, TypeScript, PostgreSQL, Keycloak)
- Development of the ToolChange Assistant: a multilingual, voice-controlled AI agent for optimizing setup times and reducing errors
- Implementation of an AI email assistant for intelligent email classification and processing with Microsoft 365 integration
- AI video marketing integration (STORYNEXT) for mid-sized companies, including AI-assisted briefing and performance analysis
- Social media content automation with AI text creation, approval workflow, and automatic publishing
- Business process analysis and digital solutions implementation for facility management service providers
- Digital consulting and web presence development for associations in rural areas
Hüseyin Korkut
Last position:
Senior Full-Stack Engineer at DVAG
Architecture and implementation of a fully digitalized closing flow for managing securities contracts within the DVAG infrastructure. The platform aims for maximum user-friendliness, modular extensibility and compliant handling of sensitive data.
Implementation of a reactive UI structure with a focus on user guidance & accessibility.
Dynamic control of form and closing processes including validation logic.
Reactive state management via SignalStore (signals + selective effects).
UX optimization through adaptive components and Playwright-based UI tests.
Backend modularization to connect existing sales and contract logic.
API stability and DTO design according to Clean Architecture principles.
Collaboration with domain teams to define technical contracts and service boundaries.
Management with GitHub.
Unit tests with Jest, E2E tests with Playwright.
Code reviews, CI-integrated test execution, iterative refactorings.
Ensuring high coverage and UI stability in the closing flow.
Technologies: Angular 18, RxJS, SignalStore, HTML5, SCSS, Spring Boot, Kotlin, REST, OAuth2, Jest, Playwright, Clean Architecture.
Eduard Van Kleef
Last position:
Workshop Leader 'Introduction to AI Development Tools' at Software company in Wiesbaden
- Presentation introducing generic AI and large language models
- Explanation of legal frameworks (EU AI Act, US CLOUD Act, GDPR)
- Systematic review of AI tools along the SDLC and holistic systems
- Comparison of on-prem LLMs vs. cloud-based, as well as change management and works council
- Facilitated the discussion and derived next steps for introducing AI development tools
Bela Bocsak
Last position:
Full Stack Lead Developer, Backend Architect at Telefonica (O2)
The software supports the complete planning and approval of antennas for mobile telephony.
The system was implemented using an event-driven microservice architecture for cloud-native deployment with Quarkus on the backend, Kafka for communication, and Angular for the frontend. Services run on Kubernetes in Google Cloud. A special challenge was synchronizing with the legacy system still used by some users.
Nicholus Muwonge
Last position:
Founding Software Engineer at Trakrf
- Built out backend services in Golang, TimeScaleDB, and GCP, handling 10K+ reads concurrently.
- Migrated from RedPanda to a local service written in Golang, reducing latency and business cost.
- Added A/B testing using Open Replay to analyze customer behavior along with performance.
- Collaborated with marketing and firmware teams to successfully launch the MVP on time to pitch to potential customers.
- Streamlined testing and deployments by creating GitHub Actions to check for failing tests and lint errors, and deploying both staging and production releases efficiently.
Discover over 15,000 top freelancers
Statistics of experts using Server-Sent Events
Aggregated from the professional profiles of matched freelancers.
Experience
19 years
Position duration
1.6 years
Positions per freelancer
13
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Manufacturing, Banking and Finance
Certification focus areas
Information Technology, Business Intelligence, Product Development
Bachelor's degree or higher
100%
Master's degree or higher
100%
Doctorate
33%
Certifications per freelancer
1
Most common languages
German, English, Spanish
Speak two or more languages
88%
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Germany are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Germany using Server-Sent Events
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
Real-time delivery Server-Sent Events sends updates from server to browser over a single long-lived HTTP connection. It fits live scores, alert streams, activity feeds, and status pages where the client mainly listens and the server pushes changes as they happen.
Where it fits
- Live dashboards that refresh without full page reloads
- Notification feeds and operational alerts
- Progress updates for long-running tasks
- News tickers, order status, and system events SSE is often chosen when you need simple one-way streaming and want to stay close to standard web infrastructure.
Ecosystem and tools Server-Sent Events is usually used through the browser EventSource API, plus backend code that keeps responses open and formats events correctly. Strong specialists know HTTP headers, reconnect behavior, retry timing, proxies, and how to keep streams stable through load balancers and timeouts.
When experts help Companies bring in freelance experts when an existing app needs live updates without a heavy websocket layer. This is common in internal tools, SaaS products, and data-heavy interfaces. In Germany, teams also use outside help when frontend and backend work must stay aligned across remote and on-site collaboration.
What good work looks like
- Clear event naming and payload design
- Safe reconnect and backfill handling
- Clean separation between stream setup and business logic
- Testing for disconnects, buffering, and browser edge cases A strong specialist thinks about reliability first, not just getting messages on screen.
Common constraints SSE is one-way: the server talks, the client listens. It is a good fit for browsers, but not for every bidirectional use case. The best professionals know when to use SSE, when WebSockets are better, and how to combine SSE with ordinary REST endpoints for commands and state changes.
Frequently asked questions
What clients ask us most about Server-Sent Events — answered in short.
Server-Sent Events are used to push live updates from a server to a browser without repeated polling. Common uses include notifications, dashboards, activity feeds, and progress indicators for background jobs. They are a good fit when the client mainly needs to listen and render updates.
Server-Sent Events are one-way, while WebSockets support two-way communication. That makes SSE simpler for live feeds, status updates, and alerts that only need server-to-client delivery. If your app needs interactive messaging in both directions, WebSockets may be the better choice.
Server-Sent Events is the streaming pattern, and EventSource is the browser API commonly used to consume it. In practice, many teams use the terms together when they mean a browser receiving a text-based event stream. A freelancer should know both the protocol shape and the client API.
A strong Server-Sent Events specialist also knows HTTP semantics, frontend state handling, and backend stream management. They should understand reconnect logic, proxy buffering, timeout settings, and how to format event payloads cleanly. Familiarity with your framework stack is important too.
A simple Server-Sent Events feed can be handled by someone who has built streaming endpoints before and understands browser reconnect behavior. More complex work needs deeper experience with scaling, error recovery, and integration with authentication or message queues. The right depth depends on how critical the stream is.
Yes, Server-Sent Events work well with remote collaboration because the implementation is easy to review through code and network traces. For teams in Germany, that often makes it practical to mix remote specialists with local product or infrastructure staff. Clear interface contracts matter more than location.
Look for a Server-Sent Events expert who can explain reconnect strategy, event ordering, and failure handling without hand-waving. Good work should include stable stream behavior, sensible payload design, and tests for disconnects and browser quirks. Ask for examples where the stream stayed reliable under real traffic.
Choose Server-Sent Events when you need timely updates and polling would waste requests or add delay. SSE is often cleaner for dashboards, alerts, and progress states that change often but only need server-to-client delivery. If updates are rare, polling may still be enough.
The average hourly rate of freelancers in Germany who have used Server-Sent Events in their recent projects is 95 €, which corresponds to a daily rate of about 761 € based on an 8-hour working day.
Of the freelancers in Germany who have used Server-Sent Events in their recent projects, 100% hold at least a Bachelor's degree, 100% hold at least a Master's degree, and 33% hold a doctorate.
On average, freelancers in Germany who have used Server-Sent Events in their recent projects have 19 years of professional experience, with a single engagement typically lasting around 1.6 years.
The most common languages among freelancers in Germany who have used Server-Sent Events in their recent projects are German (88%), English (75%), and Spanish (25%).
The most common industries among freelancers in Germany who have used Server-Sent Events in their recent projects are Information Technology (100%), Manufacturing (75%), and Banking and Finance (63%).
The most common business areas among freelancers in Germany who have used Server-Sent Events in their recent projects are Information Technology (100%), Product Development (100%), and Project Management (63%).
Main locations of FRATCH Experts, who have recently used Server-Sent Events
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg Request a free demo
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Philipp Thomaschewski
FRATCH CEO
