00 / Data & AI engineering

Data platforms and AI software that run reliably in production.

Cortex IT Solutions is a small, senior data and AI engineering practice. We design cloud data platforms, write the code, and hand them back running in your own accounts. We also build our own software — an AI shortlisting tool for HR, an invoicing app — and websites for businesses that want them done properly.

Start a conversation See our products

Stack we work in

  • AWS
  • Terraform
  • Python
  • PySpark
  • Databricks
  • Apache Iceberg
  • Kafka
  • dbt
  • Airflow
  • P1

    System Design

    We model the data before we write a line of the pipeline. The schema, the grain, and the boundaries decide your cost and your failure modes long before any code does.

  • P2

    Reliable Data Engineering

    Idempotent runs and safe replays, schema evolution that won't page anyone at 3am, and tested transformations that fail loudly in CI instead of quietly in production.

  • P3

    Built to Scale

    We design for the volume you'll have in two years, not this week — partitioned, tuned, and measured so that cost per query grows slower than the data does.

  • P4

    Foundations for AI

    Documented, governed, queryable data with lineage you can trace — the same foundation whether it feeds a dashboard, a feature store, or retrieval for a model.

01 / Services

Data and AI engineering — and the software around it.

Most of our work is data and AI engineering. When a client also needs a website or a piece of custom software, we take that on too — one team and one point of contact for all of it.

  1. 01

    Data Engineering

    Platforms and pipelines your reports and AI can depend on.

    • Architecture, data model and cost model agreed before the build
    • Batch and streaming pipelines in Spark and dbt, tested end to end
    • Infrastructure as code in Terraform, with CI/CD and monitoring
    • Migrations off legacy warehouses and lakes, validated side by side
  2. 02

    AI Engineering

    AI that works on your own documents and data.

    • Tools that read documents and rank them against your criteria — as RoleFit does with CVs
    • AI features added to the systems and workflows you already use
    • Data prepared for AI: clean, documented, with lineage you can trace
    • A person in the loop wherever a decision really matters
  3. 03

    Websites & Software

    Websites and business tools, built to your request.

    • Websites for any kind of business, designed for phones first
    • Business software like Cortex Invoicing, set up for how you work
    • Design included — layout, visuals and content structure
    • Handed over with your domain, your code and your content

02 / Products

Built by us, ready for you.

Alongside client engineering, we build our own software — and websites for businesses of every kind. Ask us for a walkthrough.

For HR teams · demo on request

RoleFit

Hundreds of applicants, one job description, a shortlist to start from.

Upload every CV for a role in one batch, add the job description, and RoleFit uses AI to read each CV against it. You get the five applicants who match best — and five more worth a second look, so strong people aren't lost to a strict filter.

  • Upload all applicants' CVs at once
  • Every CV assessed against the job description you provide
  • A top-five shortlist, plus five second-chance candidates
  • A ranking for your team to review — the hiring decision stays with people
Ask for a RoleFit demo

For freelancers and small companies

Cortex Invoicing

Invoices in a few clicks, numbered correctly every time.

Set up your company, clients and bank accounts once. After that, an invoice is a few choices: pick the client, pick the account you want to be paid into, list the items. Numbers go up automatically from whatever number you start at — never skipped, never reused.

  • Clients, bank accounts and company details entered once
  • Automatic, gap-free invoice numbering from your chosen start
  • Bring in past invoices from a spreadsheet template — years of history in one go
  • Bank details encrypted, with built-in backups
  • Runs on your own Windows laptop — your data stays with you
Ask about Cortex Invoicing

For hotels, shops, agencies and more

Websites

Websites for businesses, built to order.

Hotels, mobile and retail shops, agencies, restaurants — whatever the business, we design the site around how your customers use it. AI speeds up the build; we still check the code, the speed and the details before anything goes live.

  • Designed for phones first, and quick to load
  • Your domain and your content, handed over to you
  • From a one-page site to a shop — scoped to what you need
Request a website

03 / Practice

How we work

Who does the work, how we run it, and what you keep at the end.

seniority
One senior point of contact who scopes the work and stays accountable for it from start to finish — no account managers, no being passed around.
team.size
Small by design. A focused core team, with trusted specialists added only when a project needs them — so decisions take hours rather than weeks.
engagement.flow
A short discovery first, then a written plan with scope and stated assumptions, then delivery in increments you can see running — not one big reveal at the end.
ownership
Everything ends up yours: code in your repositories, infrastructure in your accounts, documentation for the team that inherits it. No lock-in — and while we build, your data stays in your accounts, not ours.
how.we.engage
Project-based or a fixed monthly retainer. Remote-first, working across EU time zones.

04 / Contact

Start a conversation

Tell us what you're building, or what's slowing you down — a short, scoped assessment is usually the first step. We read every message ourselves and reply within one business day.