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Your repos and cloud from commit one
The code lives in your repositories and runs in your cloud account. No vendor runtime, nothing that stops working if we do.
No two projects are the same. We find the underlying system and build something that holds.
2019Projects that don't end
Our first clients from 2019 are still clients. The software keeps evolving, with the same people who built it.
~50In-house engineers
Architecture, data, backend, frontend and mobile, mid-to-senior. No account managers between you and them.
6Disciplines under one roof
Design, architecture, full stack, data, AI integration and automation, in one accountable team.
Every project we have taken on went live.
See the work →One team from interface to infrastructure
Design, architecture, data and delivery sit with the same people, so nothing falls between two vendors and nobody has to translate between them.
Assess
01Two weeks, fixed scope, and a written answer
We map your stack, data and constraints, then name the shortest path to production, including what not to build.
- Written target architecture
- Prioritised delivery plan
- Honest read on risk
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How we work
Adapt fast, break nothing.
Every engagement starts from its own position. We read the stack you have before proposing the one you don't.
Build
02Six-week increments of software that runs
Each increment ends in deployed, working software running against your data. Not a prototype, not a demo environment.
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Weekly demo on real data
You see the software working against your own data every week, not a staged environment at the end.
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Tests and CI as we go
Tests and the delivery pipeline are built alongside the features, so every increment ends deployable.
How we work
System thinking over templates.
We don't copy solutions. We model the forces at play (data, load, people, compliance) and design for them.
Operate or hand over
03Decided at the start, not at the end
We document, train your team and step back, or stay and run it. Either way the knowledge stays with you.
What the last phase includes
Runbooks and architecture docs
Written as we go, not at the end, so nothing depends on one person's memory.
Pairing with your engineers
We work alongside your team rather than instead of it, until they own the system.
On-call cover if you want it
If you would rather we keep running it, we stay on call for the system we built.
Sectors we have built for
10- Finance
- Marketing & growth
- Document processing
- Legal tech
- Healthcare
- E-commerce & retail
- Non-profit
- Business services
- Logistics
- Education
What we own, end to end
System-level and pixel-perfect: design tokens, not one-off screens.
Design systems · UX · prototypingDistributed, built for evolution, and written down before it is built.
AWS · Docker · KubernetesFrontend to infrastructure, web and mobile, one accountable team.
TypeScript · React · Vue · Node.js · PHP / Laravel · React Native · ShopifyFrom zero to 100M requests, with the migration path in between.
PostgreSQL · Redis · Python · FastAPI · GoLLMs and agents where they solve a real problem, with evals and a human path for uncertain cases.
Anthropic Claude · OpenAI · LangChain · LlamaIndex · Pinecone · WeaviatePipelines, monitoring and agents that run without someone watching.
CI/CD · MLflow · Hugging Face
Seven years. Same people.
Started in 2019 as a small in-house team in Ukraine. Grew into full-cycle engineering without swapping the people or losing the first clients.
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Mykyta Korytskyi
Co-founder & Managing Director
Andrii Kishchak
Co-founder & CTO
~50
The rest of the team
Experienced engineers across full-stack, data, infrastructure and QA. No account managers between you and them.
2019
Founded in Ukraine
SaaS, e-commerce and CRM work on PHP, Laravel, Vue and Python. The first three clients signed between March and September; all three engagements are still running.
2020
First platform launch
The veterinarian-finder platform for designstudio.AG went live in January.
2026
About fifty engineers
Architecture, data, backend, frontend and mobile under one roof, all in-house, mid-to-senior.
Questions
Something else? Ask an engineer at software@extrums.com.
Because you probably don't have people who have shipped this specific thing before. We work alongside your team rather than instead of it, and the hand-over phase exists so the knowledge stays with you.
No. Most real work is integration work. We start from what exists rather than proposing a rewrite you can’t justify.
You do, from the first commit, in your repositories. No vendor runtime, nothing that stops working if we do.
We work inside your cloud account and against your data where possible. Any sample for local work is anonymised and agreed in writing first.
In Ukraine, on Eastern European Time. That covers the full European working day and overlaps with the US East Coast morning.
Two engineers know every engagement, and the architecture and runbooks are written as we go, not at the end.
Tell us what you're [building]
A technical call is the quickest way to see what the first phase would contain. Work is quoted after that call, with a $5,000 minimum.