LightBit

LightBit is a senior AI engineering studio from Croatia. We design, build and run AI agents and the systems around them, in production, not just in a demo. We work with B2B companies across the EU, UK and US.

What we build
- AI agents and MCP servers: agents that do real work in your systems, and MCP servers that let Claude, ChatGPT and Microsoft Copilot use your data, with sign-in, permissions and human approval
- Conversational and voice agents: Copilot Studio assistants on web, WhatsApp and SMS, and real-time speech-to-speech agents
- RAG, hybrid search and knowledge graphs for AI agents, with evaluations that prove the answers are right
- Document and data automation: extraction, classification and enrichment, including AI for XBRL/ESEF financial reporting and taxonomy mapping
- Agentic software engineering: spec-driven development with Claude Code, every change reviewed by a senior engineer
- Personal and team AI assistants: built from scratch, or open-source agents like Hermes and OpenClaw set up securely
- AI architecture and fine-tuning: model choice, security, guardrails and cost limits, decided before you commit budget

Proof
- B2B webshop customers order inside Claude and ChatGPT at their own prices: 17 agent tools, 4 weeks from first commit to production
- Search across 455K electrical products, ~130K requests a day
- AI proof-of-delivery platform and Croatian voice agent for logistics
- Clients include DSV, AZA Finance, Ergomed, BBDO, Aleta and the Croatian Ministry of Justice

How we work
Founders with 14+ years in enterprise engineering, from national government systems to fintech. Senior engineers architect the system and write the hard code. Evaluations, monitoring and reliability from day one.

Industries: e-commerce and distribution, logistics, finance and accounting, public sector.
Stack: Python, .NET, Java, LangGraph, Azure, AWS, GCP, Elasticsearch, Claude, Gemini, Mistral, OpenAI.