SENIOR ENGINEERS × AI · LUXEMBOURG

AI can build you a demo. We build you a product.

You bring the idea. Our senior engineers use AI to build it, and review every line it writes. Software and hardware, from first version to launch.

Day One €199.99 excl. VAT · credited if you continue within 2 weeks

See what we've built

TypeScript: an AI draft of a staff check-in system's check-in API saves each check-in time as text in the server's local time, which goes wrong once the server runs in another time zone; a senior engineer saves a UTC timestamp, converted to local time only for display.

Flutter: an AI draft of a staff check-in system's report mailer puts the email service's secret key inside the mobile app, where anyone can extract it; a senior engineer has the app ask the backend to send the report.

Swift: an AI draft of a staff check-in system's manager app saves the manager's session token in UserDefaults, which is not encrypted storage; a senior engineer moves it to the Keychain.

Python: an AI draft of a staff check-in system's time-correction endpoint overwrites the check-in time in place, so an edit leaves no record of who changed it or why; a senior engineer first records the correction, with the user, the old and new times and the reason, then updates the time.

Go: an AI draft of a staff check-in system's scan intake stamps each badge scan with the time it arrives, so a scan the reader kept while offline gets the wrong time; a senior engineer keeps the time the reader recorded and ignores duplicate scans by their id.

PCB: an AI-drafted ESP32 schematic for a staff check-in system's badge reader puts a pull-up on a boot strapping pin, so the board would not start, and picks a regulator too small for Wi-Fi current peaks; a senior engineer moves the pull-up to a safe pin and fits a 1 A regulator with bulk capacitance.

THE AI GAP

Why not just build it with AI yourself?

You can, and for a first demo you probably should. AI tools get something on screen in a weekend. Getting from that demo to a product customers can rely on is where most projects stall.

Time to a demo and time to production-ready, by approach. Illustrative, not measured.
ApproachTime to a demoTime to production-⁠ready
You, without AIlongvery long
You, with AI toolsvery shortvery long, if ever
An agency without AImediumlong
Our engineers + AIvery shortshort

What sits between a demo and a product

  • Sign-up, login and payments that don't break
  • Security: protected data, secrets kept secret, no open doors
  • Hosting, deployment, backups and monitoring
  • Edge cases, and automated tests that catch them
  • Code someone else can understand and change
  • For hardware: component sourcing, certification and manufacturing

We use AI every day. That's how we know where it breaks.

See how we work

HOW IT WORKS

Engineers first. AI in the middle. Engineers last.

AI drafts fast. Our engineers decide what gets built, and check everything it writes before it ships.

  1. Day One

    1 day

    A senior engineer turns your idea into a plan and builds a first iteration with AI, in one day. You keep both, whatever you decide next.

    Day One pricing

  2. Build sprints

    Weekly

    Weekly sprints. In each one, engineers plan the work, AI drafts it, and engineers review, test and harden it. You see progress at the end of every sprint.

  3. Launch

    Handover

    We deploy, document and hand over. You own the code, the plan and the designs.

  4. Care

    Optional · monthly

    An optional monthly plan: fixes, updates, monitoring and EU hosting, from engineers who already know your code.

Inside each sprint

  1. Engineer plans

  2. AI drafts

  3. Engineer reviews, tests, hardens

repeat

Every line of AI-generated code is reviewed by a senior engineer before it ships.

What we build

  • Web and mobile apps

    From a first version to a launch-ready MVP: web apps, mobile apps, APIs and dashboards.

    MVP pricing

  • Hardware products

    The device, its firmware, the app and the website, from one team. We design boards, source parts and assemble prototypes in our own workshop.

    • ESP32
    • STM32
    • Arduino
    • PCB design
    • Firmware

    Hardware pricing

  • From AI prototype to production

    Built something with Lovable, Bolt, Cursor or ChatGPT? We review it, fix what's risky and get it ready for real users.

    Pricing

  • AI features

    Add AI to your product: language-model features, search over your own data, and automation, built with cost and privacy in mind.

    Talk to us

  • Teams and R&D labs

    Have an engineering team or a research lab? We can join your engineers or run a project end to end.

    Talk to us

  • Local AI for companies

    Open-weight AI models and agents on hardware inside your own premises, for teams that must keep their data in-⁠house.

    Local AI setups

  • Security and privacy by design
  • GDPR
  • NDA on request
  • You own the code
  • Hosted in the EU

What we've built

One client product, one product we sell, and two open-source projects you can read line by line.

  • Client project

    Zamil Pod

    A smart speaker we built across hardware, software and web, from the circuit board to the online store.

    Client name confidential.

    Type
    Hardware + firmware + mobile app + web
    Time
    1.5 years from start to delivery
    Status
    On sale from Q2 2027
    Technologies
    • Custom PCB
    • ESP32 firmware

    We did the full product design, the assembly engineering and the full PCB ourselves, and built the ESP32 firmware with its update servers and the mobile app that controls the speaker. We also built the website that sells it, with a 3D visual and integrated payments, and the website that receives orders and follows the production line.

  • Our product

    Orion Encryptor

    A quantum-safe VPN powered by Quantum Key Distribution, for companies and research organizations.

    Type
    Hardware + software
    Time
    2 months
    Technologies
    • C
    • C++
    AI models
    GPT-5.4 + Opus 4.6

    Visit the product website (opens in a new tab)orion-encryptor.lu

  • Open sourceMIT

    PulseID

    Access-control software that works with RFID readers and records when staff come and go.

    Type
    Software
    Time
    2 weeks
    Technologies
    • Python backend
    • Nuxt + Vue frontend
    AI models
    GPT-5.3 Codex + Opus 4.5

    Read the code on GitHub (opens in a new tab)github.com/2RL-AI/PulseID

  • Open sourceMIT

    Reflow Eye

    Real-time reflow soldering monitor that uses thermal cameras to track circuit-board temperatures against the SAC305 profile.

    Type
    Hardware + software
    Time
    1 week
    Technologies
    • Python
    • TypeScript
    • Vue

    It runs as a command-line tool, as a web interface, or as a standalone engine for headless setups such as a Raspberry Pi.

    AI models
    Opus 4.6

    Read the code on GitHub (opens in a new tab)github.com/2RL-AI/reflow-eye

Inside the workshop

Most software teams stop at the screen. We also have a workshop in Frisange. Circuit boards made by our fabrication partners are assembled, soldered and fitted into printed enclosures here, so a prototype doesn't wait weeks in someone else's queue.

  • Pick-and-place machine

    Places components on our boards automatically, so small batches of prototypes are assembled in-house.

  • Reflow oven

    Solders assembled boards with controlled temperature profiles — the process our open-source Reflow Eye was built to monitor.

  • 3D printers

    Enclosures and fixtures printed in hours, so a prototype looks and feels like a product early.

  • Boards and prototypes

    We build on ESP32, STM32 and Arduino, with circuit boards fabricated by JLCPCB and PCBWay and parts from Mouser and Digikey.

How we use AI

  • Engineers write the plan. AI drafts code against it.

  • We use current models from OpenAI and Anthropic, and most of our projects list which ones we used.

  • A senior engineer reviews every line AI writes. Then it's tested and checked for security before it ships.

  • The AI models we use don't train on your code or data.

  • 2RL Sàrl-S
  • Registered in Luxembourg (RCS B301922)
  • Frisange
  • 15+ years of combined engineering experience

SOVEREIGNTY

Your data, in the EU or on your premises

For companies and public bodies that can't send their data just anywhere. What we host for you runs in the EU, and the AI we set up for you runs in your own building or on an EU sovereign cloud.

Hosted in the EU

  • EU data centres of Scaleway or OVHcloud, European cloud providers

  • Your data stays within the EU-⁠27 unless you ask otherwise

  • For public-sector and critical-service projects, we design to the rules you answer to, such as GDPR and NIS2, and document how the system meets them

Local AI, on your premises or on an EU sovereign cloud

We install open-weight AI models and agents on hardware inside your own premises, or run them for you on an EU sovereign cloud, in the EU data centres of Scaleway or OVHcloud. On your premises, models run fully offline: no prompt or document leaves your network. With either option, nothing is sent to the model's publisher.

  • A Mac Studio: a small, square desktop computer in silver aluminium

    Example: Mac Studio

    Compact

    Fits most companies

    Hardware
    One workstation with a single GPU (24–⁠48 GB of GPU memory), or a Mac Studio with at least 64 GB of memory
    Models
    Gemma, smaller Qwen models, Llama 8B
    Who it's for
    Small firms such as law practices, fiduciaries, medical practices and accounting offices
    Typical uses
    Questions over your documents, drafting, email triage

    On your premises

    Hardware
    about €3,500–⁠13,000 excl. VAT
    Installation
    from €999.99 excl. VAT

    On EU sovereign cloud

    from €999.99/month excl. VAT

    no set-up fee

  • An NVIDIA H100 data-centre GPU: a long, gold-coloured PCIe card with a metal bracket

    Example: NVIDIA H100 data-centre GPU

    Department

    Hardware
    One server with 2 to 4 data-centre GPUs (192–⁠384 GB of GPU memory)
    Models
    Smaller GLM models, larger Qwen models, Llama 70B
    Who it's for
    SMEs and departments
    Typical uses
    Coding agents, support agents, internal knowledge search

    On your premises

    Hardware
    about €50,000–⁠120,000 excl. VAT
    Installation
    from €999.99 excl. VAT

    On EU sovereign cloud

    from €6,999/month excl. VAT

    no set-up fee

  • The fronts of GPU servers stacked in a rack, with green power lights

    Example: a rack of GPU servers

    Organisation

    Hardware
    One or more 8-GPU servers, more than 1 TB of GPU memory each; the largest models need two or more
    Models
    DeepSeek, Kimi, GLM, the largest open-⁠weight Qwen models
    Who it's for
    Public administrations, banks and insurers, hospitals, critical-infrastructure operators
    Typical uses
    Organisation-wide assistants and agents, heavy reasoning

    On your premises

    Hardware
    about €300,000–⁠600,000 per server excl. VAT
    Installation
    from €999.99 excl. VAT

    On EU sovereign cloud

    from €69,999/month excl. VAT

    no set-up fee

We check each model's licence against your use before we install it.

Hardware budgets are indicative market prices for the hardware alone, excl. VAT, checked in September 2026. Your quote is fixed in writing before any work starts.

The EU sovereign cloud includes dedicated GPUs, model set-up, monitoring and support, with updates to newer models when the hardware supports them. There are no usage limits beyond what the hardware can handle. It's billed monthly, with a minimum commitment of 6 to 12 months, depending on the setup, and your final price is fixed in writing when you sign the contract.

See Local AI pricing

WHERE WE WORK

Based in Luxembourg. On site in Europe, remote beyond.

Our base and workshop are in Frisange, just south of Luxembourg City. We come on site around Luxembourg and across the EU, the UK, Norway and Switzerland; in North America, the Middle East and North Africa, we work with you remotely day to day and travel to you when your project needs it.

Map of Luxembourg, Europe, North America, the Middle East and North Africa. It marks Luxembourg City; our base and workshop are in Frisange, just south of it. It also shows where we come on site: Luxembourg and the neighbouring regions, the 27 EU countries, the United Kingdom, Norway and Switzerland; and where we work remote first, remotely day to day and travelling to you when your project needs it: North America (the United States and Canada) and the Middle East and North Africa (Türkiye, the Gulf, Algeria and Morocco).

  • Luxembourg City — our base and workshop are in Frisange, just south of the city

  • Around Luxembourg — on site in Luxembourg and the neighbouring regions

  • The 27 EU countries — on site when your project needs it

  • The UK, Norway and Switzerland — on site when your project needs it

  • North America, the Middle East and North Africa — remote first: we work with you remotely day to day and travel to you when your project needs it

Pricing

Starting prices, so you know where you stand before you talk to anyone. Your final price is fixed in writing before any work starts.

Prices exclude VAT.

Day One

€199.99

One senior engineer. One day. A first iteration and a detailed plan.

  • Credited toward whatever you build next if you continue within two weeks of paying the Day One invoice.
  • You own everything we produce, even if you stop here.

What you have at the end of the day

  • Software

    A working first version of the core flow at a preview link, plus the implementation plan.

  • Hardware

    The architecture, a component shortlist with a cost estimate, a proof of concept on a development board where feasible, plus the implementation plan.

  • An app you built with AI tools

    A production-readiness review, a prioritised fix list, the most critical fixes done, plus the implementation plan.

  • MVP

    from €299.99

    From one week

    A launch-ready first version of your web or mobile app: design, build, automated tests, deployment and handover.

    Starts with Day One

  • Hardware product

    from €1,499.99

    Prototype in weeks, market-ready product in months

    Electronics, firmware, app and website, with prototypes assembled in our own workshop.

    Starts with Day One

  • AI-built app to production

    from €499.99

    Scope set after the Day One review

    We take over what you built with AI tools, fix what's risky, add tests and deploy it properly.

    Starts with Day One

  • Care

    €99.99/month

    Monthly

    Fixes, updates, monitoring and EU hosting, from engineers who know your code.

  • Local AI

    from €999.99 + hardware

    or on EU sovereign cloud from €999.99/month, no set-up fee

    Hardware sized to your models and users, and quoted separately

    Open-weight AI models and agents, installed on hardware on your own premises or run for you on an EU sovereign cloud. On your premises, no prompt or document leaves your network. The cloud is billed monthly, with a minimum commitment of 6 to 12 months, depending on the setup.

Frequently asked questions

Anything we haven't covered? Ask us directly. We reply within one business day.

Getting started

  • One day of a senior engineer's time. What you get depends on the project:

    • Software: a working first version of the core flow at a preview link, plus the implementation plan.
    • Hardware: the architecture, a component shortlist with a cost estimate, a proof of concept on a development board where feasible, plus the implementation plan.
    • An app you built with AI tools: a production-readiness review, a prioritised fix list, the most critical fixes done, plus the implementation plan.

    Day One has a fixed price, and it's credited if you continue within two weeks of paying the Day One invoice.

  • You decide. If you continue, you get a fixed price in writing for the next step, and nothing starts without your OK. We then work in weekly sprints: engineers plan, AI drafts, engineers review, test and harden, and you see progress at the end of every sprint. At launch, we deploy, document and hand everything over. If you stop after Day One, you keep everything we produced.

  • You can, and for a first demo you probably should. The hard part comes after: login and payments, security, hosting, testing, and code that doesn't break every time you change it. That's the work our engineers do every day.

  • Not to get started. We can be your engineering team from the first version to launch, and keep supporting your product afterwards.

  • Yes. Everything we produce for you — code, plans, designs and documentation — is yours, including the Day One output if you decide not to continue.

  • Yes. If you ask, we sign an NDA before discussing any details. We're a Luxembourg company and follow the GDPR, and for sensitive projects we can work on-premise or in air-gapped environments.

Software

  • From a first version to a launch-ready MVP: web apps, mobile apps, APIs and dashboards. For a hardware product, we also build the app and the website that go with the device.

  • From one week. An MVP is a launch-ready first version of your web or mobile app: design, build, automated tests, deployment and handover. The MVP package costs from €299.99 excl. VAT, starts with Day One, and its final price is fixed in writing before any work starts.

  • Yes. We write code and documentation another developer can pick up, and we hand everything over at the end of a project.

  • In the EU. What we host for you runs in the EU data centres of Scaleway or OVHcloud, European cloud providers, and your data stays within the EU-27 unless you ask otherwise. For public-sector and critical-service projects, we design to the rules you answer to, such as GDPR and NIS2, and document how the system meets them.

  • You can take everything and run it yourself, or choose a Care plan: fixes, updates, monitoring and EU hosting from the engineers who built it.

AI

  • Engineers write the plan and AI drafts code against it. A senior engineer reviews every line AI writes, and the code is tested and checked for security before it ships. The AI models we use don't train on your code or data.

  • Yes, it's one of our offers. Day One starts with a production-readiness review: what's solid, what's risky and what it takes to go live. We fix the most critical issues the same day.

  • Yes: language-model features, search over your own data, and automation, built with cost and privacy in mind. For data that has to stay in-house, see Local AI.

  • Yes. We install open-weight models such as Qwen, DeepSeek, GLM, Kimi, Llama and Gemma on hardware in your premises, sized to the models you need and the people who use them. Models run fully offline, so no prompt or document leaves your network. Installation starts from €999.99 excl. VAT, plus the hardware.

    If you'd rather not run the hardware yourself, we can run the same models for you on an EU sovereign cloud, in the EU data centres of Scaleway or OVHcloud, from €999.99/month excl. VAT, with no set-up fee. The monthly price includes dedicated GPUs, model set-up, monitoring and support, with updates to newer models when the hardware supports them, and there are no usage limits beyond what the hardware can handle. The cloud is billed monthly, with a minimum commitment of 6 to 12 months, depending on the setup. Either way, nothing is sent to the model's publisher.

  • It depends on the models you need and the people who use them. We offer three setups:

    • Compact: one workstation with a single GPU (24–⁠48 GB of GPU memory), or a Mac Studio with at least 64 GB of memory. Models: Gemma, smaller Qwen models, Llama 8B.
    • Department: one server with 2 to 4 data-centre GPUs (192–⁠384 GB of GPU memory). Models: smaller GLM models, larger Qwen models, Llama 70B.
    • Organisation: one or more 8-GPU servers, more than 1 TB of GPU memory each; the largest models need two or more. Models: DeepSeek, Kimi, GLM, the largest open-⁠weight Qwen models.

    We check each model's licence against your use before we install it. Each setup runs on your premises or on an EU sovereign cloud: see Local AI setups for who each one suits and what it costs.

Hardware

  • Yes: electronics, firmware, apps and websites, with prototypes assembled in our own workshop in Luxembourg. A first prototype usually takes weeks. A market-ready product takes months, sometimes longer: the smart speaker we built for a client took 1.5 years from start to delivery.

  • The device, its firmware, the app and the website, from one team. We design boards, source parts and assemble prototypes in our own workshop. We build on ESP32, STM32 and Arduino, with circuit boards fabricated by JLCPCB and PCBWay and parts from Mouser and Digikey.

    In the workshop, a pick-and-place machine, a reflow oven and 3D printers let us assemble, solder and fit small batches of prototypes into printed enclosures in-house.

  • With Day One: the architecture, a component shortlist with a cost estimate, a proof of concept on a development board where feasible, plus the implementation plan. The Hardware product package costs from €1,499.99 excl. VAT, and Day One is credited toward it if you continue within two weeks of paying the Day One invoice.

Consulting

  • Yes. We can join your engineers or run a project end to end. Either way, a senior engineer reviews every line AI writes before it ships. We work with you as consultants, at a day rate, starting with Day One.

  • No. We also join engineering teams and research labs, and our EU hosting and Local AI are made for companies and public bodies that can't send their data just anywhere.

  • Both. Our base and workshop are in Frisange, just south of Luxembourg City. We come on site around Luxembourg and across the EU, the UK, Norway and Switzerland; in North America, the Middle East and North Africa, we work with you remotely day to day and travel to you when your project needs it.

    See where we work on the map.

Pricing & payment

  • Day One costs €199.99 excl. VAT. Prices for everything else are in the pricing section. After Day One you get a fixed price in writing for the next step, and nothing starts without your OK.

  • There's no payment on this site. If it helps, we start with a meeting to talk your project through. Then we confirm Day One and send its invoice by email, and you pay it before the day.

    For every step after it, the price is fixed in writing before any work starts, and nothing is booked or charged until you say yes. The MVP, Hardware product and AI-built app to production packages are paid by milestone. Care is billed monthly. The EU sovereign cloud is billed monthly, with a minimum commitment of 6 to 12 months, depending on the setup.

    You pay by bank transfer or credit card. Prices exclude VAT.

  • Yes, if you continue within two weeks of paying the Day One invoice: what you paid for Day One is credited toward whatever you build next with us. If you stop there, you keep everything we produced.

Start with Day One

One senior engineer. One day. A first iteration and a detailed plan. €199.99 excl. VAT, credited if you continue within two weeks of paying the Day One invoice.

You own everything we produce, even if you stop here.

Prefer to talk first?

We reply within one business day.