Python & AI engineering
Production AI and Python systems, built by the engineer who writes the code.
We build software that has to be right. Answers over your own documents with every source cited, document reading and extraction, automation that fits the tools you already run, websites and voice assistants. Fixed price, agreed in writing, delivered remotely from the EU.
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What we build
One engineering discipline, several ways to buy it.
A custom build, our own software product, or a focused service for ecommerce, publishing and the public sector. The same rule runs under all of them: nothing reaches you that cannot be checked.
Custom AI & Python builds
Search and question-answering over your own documents (RAG), and AI assistants and agents that cite their sources. Scanned paperwork turned into clean data (OCR), and automation that snaps onto the tools you already run. Paid pilot from $2,500, credited to the build.
Deal OS, our own product
Diligence software for business acquirers. Upload a CIM, the seller’s information memorandum, and get a screening memo, the contradictions in the documents and a management question pack. Every claim is cited to its page. Self-serve from $249 a month.
Websites with an AI assistant
Fast, indexable websites with a chat or voice assistant that answers from your real data, including a multilingual platform for independent car dealers.
Voice AI agents
Voice agents that answer callers and website visitors in several languages, grounded in your catalogue or knowledge base instead of improvising.
Shopify & Klaviyo
Store rebuilds, mobile speed and AI-search visibility for Shopify, plus Klaviyo flows, segmentation, audits and migrations for ecommerce brands.
Scientific typesetting
LaTeX typesetting for academic books and journals, with typesetting credits acknowledged by the authors in published texts.
Romanian public institutions
A registered supplier in SEAP, Romania’s public procurement system, with an active electronic catalogue. Romanian institutions can buy directly under the legal thresholds. Written and delivered in Romanian.
DroneWatch AI
A defensive drone early-warning concept demonstrator. It combines radio-frequency, acoustic and telemetry signals with live public aircraft positions (ADS-B). The threat signals are simulated and it is not an operational system.
Prices are in US dollars and exclude VAT. Invoiced by DEVALAND MARKETING S.R.L., VAT number RO50841395.
How we work
Built to be checked, not believed.
Cite the source or cut the claim.
Answers are grounded in material you control and traced back to where they came from. A claim that cannot be traced is discarded before anyone sees it.
Private by default.
Open models run locally for the parts of a pipeline that touch confidential files. Where a frontier model earns its place, we agree in writing what reaches it.
Costs that cannot run away.
Per-run cost caps, usage metering and alerting ship with every build, so you see what a run costs before you scale it.
One senior engineer, accountable.
You work directly with the person who designs and writes the system. No account managers and no juniors learning on your budget.
Fixed price, in writing.
Intake is a short written form, not a sales call. You know the number and the deliverable before any work starts.
An EU company you can check.
Based in Hunedoara County, Romania, delivering remotely. VAT-registered and verifiable in VIES, so GDPR and EU contract law apply to the work.
Our own product
Deal OS: cited diligence for search funds, sponsors and M&A advisors.
Upload a CIM and, minutes later, read a screening memo, every contradiction the documents contain and the questions worth putting to management, each linked to the exact page. Self-serve, no sales call, cancel any month.
Proof, not promises
Systems that are already running.
Deal OS
A live SaaS platform that reads 100-page deal documents, runs OCR and extraction, and returns findings with the source page attached. You can run it without an account.
Open the sandbox →A dealership website with an AI assistant
A multilingual website for a working car dealership, with a voice and chat assistant re-synced to live stock, written up with only the numbers that can be verified.
Read the case study →A board pack where every figure has a source
A worked monthly board pack in which each number carries the file it came from, and an unverifiable claim is shown being cut.
See the example →Open source, reproducible
A measured finding on why retrieval confidence scores cannot stop an AI from making up answers, with the demo and the checks that replace them. MIT licensed.
View on GitHub →Getting started
Start small, and judge it on your own data.
Written intake
Describe the one workflow that hurts in a short form. You get an honest answer on whether a build makes sense. No call.
Paid proof pilot
One clear deliverable at a fixed price from $2,500, about one to two weeks, run on your real data.
Build or fractional
If the pilot works, a fixed-scope build, typically $8,000 to $25,000, or a fractional AI engineer from $4,000 a month. The pilot fee is credited.
All prices are in US dollars and exclude VAT. Romanian clients pay Romanian VAT on top. EU businesses outside Romania with a valid VAT number are normally invoiced under the reverse charge. Clients outside the EU pay no EU VAT.
A real company, checkable in one click.
Buyers who have been let down by a software supplier before do not take a company at its word, and they should not have to. Each card below opens a public register or a published record.
Questions
About Devaland.
What does Devaland do?
Devaland is a Romanian software company that builds production AI and Python systems for other companies. That covers cited answers over their documents, document reading and extraction, automation, websites and voice assistants. It also builds and runs its own product, Deal OS, diligence software for business acquirers.
Who works on my project?
Marius Andronie, the founder, a senior Python and AI engineer. Devaland is deliberately small: you deal directly with the person who designs and writes the system.
How does an engagement start?
With a short written intake and then a paid proof pilot: one clear deliverable at a fixed price from $2,500, about one to two weeks, on your real data. If you continue, the pilot fee is credited toward the build.
Where are you based and how do you invoice?
In Hunedoara County, Romania, inside the EU, and the work is delivered remotely. Projects are invoiced business to business by DEVALAND MARKETING S.R.L., VAT number RO50841395. Prices are in US dollars and exclude VAT. Romanian clients pay Romanian VAT on top. EU businesses with a valid VAT number are normally invoiced under the reverse charge. Clients outside the EU pay no EU VAT.
Do you work with Romanian public institutions?
Yes. DEVALAND MARKETING S.R.L. is a registered supplier in SEAP with an active electronic catalogue, so institutions can buy directly under the legal thresholds. The details are in Romanian on the Instituții publice page and on devaland.cloud.
How does Deal OS relate to the custom builds?
Deal OS is Devaland’s own product, built on the same grounded stack used for client work. It is the clearest example of what a custom build looks like in production: every claim in a brief is cited to a page and checked against the source document.
Tell us the one workflow that hurts.
A short written form, no call. You get an honest answer on whether a build makes sense and, if it does, one clear deliverable at a fixed price.