Extension Technologies · Est. 2019

Your engineering team,
on demand.

Get a ready-to-go engineering team — developers, design, QA and DevOps — that plugs into your roadmap and ships from week one. All the output of an in-house team, none of the hiring.

Remote-firstWe adapt to your timezone, worldwide
Full-cycleIdea → MVP → Launch → Scale

Our core stack

ReactNext.jsNode.jsPythonC# / .NETTypeScriptAWSKubernetesPostgreSQLOpenAI / LLM

Just part of our stack — need something else? We've got it.

how we work

Three ways to work with us

Pick how hands-on you want to be — we own the outcome either way.

Dedicated Team

Your own dedicated development team — minus the recruiting, payroll and overhead. We build and run it; you set the direction.

Team Extension

Missing hands or a specific skill? Our engineers slot into your team and ship from day one — you stay in control.

Full-cycle Delivery

No team? Hand us the whole build. We take it to a market-ready product, accountable from first idea to launch.

Pricing that fits the project: Time & Materials Fixed price Monthly

industries

Industries we build for

From regulated systems to high-growth platforms — we build where reliability and scale matter.

Fintech & Banking

Secure, compliant fintech software — built to bank-grade security and audit standards.

Healthcare

HIPAA- and GDPR-ready healthcare software where uptime and data privacy aren't optional.

E-commerce & Retail

High-converting e-commerce platforms built to stay fast through peak-season traffic.

Logistics & Supply chain

Real-time tracking, automation and integrations that keep your supply chain moving.

EdTech

Engaging EdTech platforms that scale smoothly to thousands of concurrent learners.

iGaming

Real-time, high-load iGaming platforms engineered for peak traffic and steady uptime.

Don't see your industry? We adapt to any domain — tell us what you're building.

Start a project →

why exttech

Why teams choose us

No big-agency overhead, no account-manager walls — engineers who plug in and deliver.

Flexible engagement

Dedicated, extension or full-cycle — rescale the team as your roadmap shifts.

Stable teams

The people who start your project see it through — no churn, no handovers.

Transparent communication

A direct line to your engineers, in your time zone — clear sprint updates, no middlemen.

Predictable delivery

Agile delivery in short sprints — predictable progress you can plan a launch around.

Security by default

Idea, code and data protected from the first message — NDA included.

Full ownership

One accountable team, end to end — from prototype to long-term support.

2019Working since
6+Industries
WorldwideClients
100%Code is yours

faq

Questions clients ask us

Straight answers before we even get on a call — no fine print, no surprises.

How quickly can you start?

Usually within 1–2 weeks. We can ramp a single engineer or assemble a small cross-functional team, depending on what you need.

Can you work with our existing team?

Absolutely — that's what "extension" means. Our engineers plug into your existing team, processes and codebase, follow your standards, and work as one team, not a separate vendor.

What engagement models do you offer?

Time & Materials, Fixed-scope, or a Monthly dedicated team. You can scale the team up or down as priorities change.

Who owns the code and IP?

You do — 100%. All code, deliverables and intellectual property belong to you. We're glad to sign an NDA before we get into specifics.

How do we communicate?

In English, with solid daily overlap for EU and US hours, using your tools — Slack, Jira, GitHub, whatever your team already runs on.

Can we scale the team later?

Yes. Add specialists or reduce the team as the roadmap evolves — that flexibility is the whole point of an extension team.

What if the collaboration isn't working out?

A short notice period and a clean handover: documented code, transferred access, no lock-in. A low-risk partnership is how we keep clients.

let's talk

Tell us what you're building

Send a brief, a problem, or just an idea. We'll come back with a clear first step — no obligation.