Production AI specialist. Open to freelance.

RAG and AI agents that survive production.

I build production RAG and AI agents, and I cut what they cost to run. Most AI never survives the demo, the hard part is drift, latency, evals, and cost. I shipped a live system that handles all of it. Go click it.

Agrotus cockpit dashboard with farm health scores, field tiles and yield rankings

0

AI tools

~0%

cache hit

0+

KB tables

0+

build cycles

About 4 cents per answerEN and LT liveCustom trained vision modelSelf managed VPS

What I specialize in

The scarce, high value work. Each lane is proven by a real, shipped feature in Agrotus.

Production RAG over your data

An assistant that answers from your own documents and databases, grounded so it does not invent answers.

RAG over an 80 plus table knowledge base with grounding guards, live in production.

AI agents that run in production

Tool using agents that actually do the work and keep working under real load, where most agent demos die.

A 45 tool agent running live, not a proof of concept.

Cost control, evals, and observability

Cut what your AI costs to run and keep it reliable, with caching, routing, evaluation, and drift checks.

About 95% cache hit, about 4 cents per answer, 50 plus build cycles with adversarial QA.

AI built into your existing software

Models integrated into a real product and shipped. Backend, auth, deployment, third party data.

A full stack platform with satellite and vision integration, deployed solo on a self managed server.

Custom models when off the shelf will not do

A trained model for your domain when a generic LLM cannot do it.

A custom trained vision classifier.

Most AI systems never leave the demo stage. The hard part is everything after: drift, latency, evals, cost, and keeping it reliable. That is the part I have actually shipped.

The proof

Agrotus

Challenge

Build a production AI platform for farming end to end, solo. Grounded agronomy that does not hallucinate, real satellite and vision pipelines, multilingual, secure, and cheap enough to run on one small server.

Solution

A Claude powered assistant with 45 tools over an 80 plus table knowledge base, a custom trained disease model, Sentinel 2 analysis, yield forecasting, and a full operations cockpit. One streaming call per message, dual breakpoint caching, hallucination guards.

Result

Live in production. About 95% cache hit, about 4 cents per answer, EN and LT. Designed and shipped solo in about 3 months, across 50 plus build cycles.

Which part proves which niche

Production RAGthe 80 plus table knowledge baseAgentic systemsthe 45 tool agent loopCost and evalscaching, cost control, adversarial QAIntegrationfull stack, satellite, visionCustom modelsthe DINOv2 classifier
Agrotus satellite map with field list and crop distribution
Satellite map, field zones and crop breakdown.
Agrotus disease diagnosis history with pathogen names and confidence scores
Disease diagnosis history. Shown in Lithuanian, English available across the product.
See it live Lithuanian market product, English interface available in product.

How it is built

Enough specifics to trust the work. Verified against the live codebase.

AI

Manager agent loop with typed tool dispatch over Claude Sonnet. 45 tools, dual breakpoint prompt caching at about 95% hit, one streaming call per message, hallucination guards that keep numeric and regulatory answers grounded in the database.

Cost control

Split conformal routing and token budgets bound model spend to a few cents per message.

Vision and ML

A custom trained DINOv2 nine class crop disease classifier, plus a multi signal photo diagnosis path live in the product.

Geospatial

Sentinel 2 imagery to NDVI to K means zones to ISOXML export.

Data

An 80 plus table knowledge base with retrieval at inference time.

Security

JWT in httpOnly cookies, CSRF tokens, organization scoped queries, a read only public demo enforced by middleware, rate limiting.

Stack

Next.js, React, TypeScript and Tailwind on the front. FastAPI, SQLAlchemy, Pydantic and Python on the back. PostgreSQL, SQLite and pgvector for data and retrieval. Self managed VPS with systemd and nginx.

About

I am Domantas. I design and ship production AI systems end to end, by myself. I built Agrotus alone, from the model orchestration to the deployment. I work fast, I verify everything, and I care about software that holds up in production. Available for freelance.

Let’s build something.

Tell me what you are building. I can integrate an AI assistant on your data, train a model for your domain, or build the whole system. Fixed scope, shipped. Just the engineer who does the work.

Available for freelance. AI integration, ML models, or full builds.

Designed and shipped solo in about 3 months, across 50 plus build cycles.