RAG & Internal AI
Custom knowledge assistants that turn documents and data into reliable, source-grounded answers.
SOFTWARE ENGINEERING · AI SYSTEMS · ARCHITECTURE
Complex software. Built to last.
I design and build production-ready RAG systems, scalable web applications, and high-performance backend platforms.
Based in GermanyRemote worldwideEnd-to-end ownership
DATA SOURCES
Documents
Knowledge Base
APIs & Systems
→
Ingestion
Embedding model
RAG PIPELINE
query = embed(user_question)
context = retrieve(query)
answer = llm.generate(context)
Retrieval
Top-k context
ANSWER
Grounded · Accurate · Traceable
SELECTED EXPERTISE
Selected expertise
From the first architecture decision to stable production operations.
Web Platforms
Scalable web applications with clean architecture, modern technology, and excellent user experience.
Software Architecture
System design that keeps complexity under control and enables sustainable growth.
Rust & Performance
High-performance backend systems in Rust—fast, safe, and predictably scalable.
CASE STUDIES
Software that solves real problems
Selected work across AI, web engineering, and performance-critical systems.
LEGAL AI
RAG system for legal case files
Source-grounded analysis of evidence, correspondence, and party statements for a law firm.
INTERNAL AI
Knowledge assistant for social services
Situation-specific access to internal policies and operational guidance.
RUST · SOLANA
High-performance trading systems
Performance-critical data processing and integrations for Solana-based trading systems.
DATA SOURCES
Documents
Knowledge Base
APIs & Systems
→
Ingestion
Embedding model
RAG PIPELINE
query = embed(user_question)
context = retrieve(query)
answer = llm.generate(context)
Retrieval
Top-k context
ANSWER
Grounded · Accurate · Traceable
RAG · OLLAMA · PRIVATE AI
Internal knowledge. Instantly accessible.
RAG systems connect your documents to a language model. Employees receive specific answers with traceable sources—optionally operated entirely within controlled infrastructure.
- Answers grounded in approved company documents
- Source references for verifiable results
- Local model operation with Ollama
- Integration with existing document repositories
COLLABORATION
From idea to production
01
Discovery
We clarify objectives, processes, risks, and the technical context together.
02
Architecture
I design a clear, scalable solution and make technical trade-offs transparent.
03
Build
Short feedback cycles, measurable progress, and high engineering quality.
04
Operate
Production-ready delivery, documentation, monitoring, and a clear path to scale.
TECHNOLOGY
The right tools—not short-lived trends
LANGUAGES
TypeScript
Python
Rust
FRAMEWORKS
Next.js
Node.js
FastAPI
DATA & AI
PostgreSQL
Redis
Ollama
ABOUT
Experience from product idea to high-load systems
I’m Nico Schwarz, a freelance software engineer based in Germany. Since 2019, I have built web applications, data platforms, and backend systems for start-ups, mid-sized businesses, and enterprise environments. I translate complex requirements into understandable architectures and maintainable software.
Planning an ambitious software project?
Let’s discuss your requirements, risks, and the fastest path to a robust solution.
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