The technical partner you aren’t ready to hire full-time. Yet.

A small studio that becomes the technical half of your company. For founders who’ve spent years in their field and need senior engineering to turn that depth into software.

See partnership in practice Or book a 30-minute call
4 product engineers
Poland · EU
10 yrs
CTO/tech-lead bench
15+ startups
consulted + built
3 products
shipped + earning

We become the technical half of your company.

We don’t deliver against a spec. The work usually starts with a conversation about what you know, what you’ve tried, and where things have gotten stuck.

Architecture, hiring, what to build next, what not to build. Those happen with us in the room.

Technical Partnership

Embedded fractional CTO with a senior build team. Architecture, hiring, and the hands to ship. Monthly retainer plus scope, long-running by default. Closer to a co-founder than a vendor.

Read the offer

Tech Audit & Strategic Advisory

A senior look at what you've already built, or what you're about to. Often the on-ramp to a partnership engagement, but valuable on its own. Sometimes the right answer is "don't build that yet."

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Type-safe by construction.
AI-assisted, not vibe-coded.

Our stack refuses to compile when AI invents a function that doesn’t exist. So we can ship at AI speed without leaving you a codebase you can’t maintain.

How we use AI The full stack story

Framework + data layer

TanStack Start

Type-safe RPC, router-first. Query, Form, and Table from the wider toolkit where they fit. Sample Vault and Campaign Finance both run on it.

Database & auth

Supabase

Postgres with RLS, real-time, and auth. Opinionated and proven. Powers Campaign Finance, Sample Vault, and more in production.

Cross-platform

Tauri

When the browser is the wrong shape. A web team ships native without picking up Rust as a specialty. Sample Vault and QuickPin both run on it.

Embedded DB

Turso

Local-first SQLite at the edge of a Tauri app, synced to a hosted replica. The right shape when the user’s library lives on their machine but needs to round-trip.

Read Turso’s case study
“Feathered got it right away — even though we were still figuring things out ourselves. They helped us navigate the complexity, asked the right questions, and always came back with clear, actionable answers.”
Alexandre Gol Mestre, CTO, Systellar Space

The two who run it.

Wojciech Adamek portrait

Wojciech Adamek

Founder & CTO

  • 10 yrs CTO/tech-lead
  • Built Sample Vault
  • Co-founded Campaign Finance

Ten years as a CTO or tech lead for early-stage startups, and a working music producer the whole time. Sample Vault is what happened when those two collided — built to fix his own sample library, earning revenue now. The decade with founders is why he can sit on architecture and business calls equally; Sample Vault is why he's been on the founder side too. He'll tell you when an idea is wrong before he tells you he can build it.

Off the clock, parrot and bird enthusiast, and pulled deep into Japanese culture.

Mikołaj Rydecki portrait

Mikołaj Rydecki

Lead Project Manager & COO

  • 10+ yrs technical PM
  • Strong technical background

Running technical projects for over a decade. The reason scope doesn’t drift, and the reason clients can describe what’s happening on their build without reading a Jira board. He asks the right questions in standups, not just “are we on schedule?”

Off the clock, family outdoors — nature survival and mountain climbing.

Two engagements,
two own products,
same studio, same standards.

Campaign Finance screenshot

Campaign Finance

A non-technical political-finance operator with a decade of regulated-industry insight. Wojciech is a co-founder. Bootstrapped, profitable, and our deepest engagement to date.

Founders
Political-finance operator, Feathered
Stack
TanStack Start + Supabase
Started
2025
Status
Bootstrapped · Profitable
Visit the product
Systellar Space screenshot

Systellar Space

Two semi-technical space-domain founders, mid-build, trying to figure out the architecture for a satellite data platform. We advised, then built.

Founders
Space-domain engineers
Started
2025
Status
In production · Funding secured
Visit the product
Sample Vault screenshot

Sample Vault

Wojciech is a music producer. He built Sample Vault for himself; it started earning revenue. Sample Vault is how the studio learned what it takes to ship for a domain-expert founder — by being one.

Founder
Feathered
Stack
Tauri + TanStack + Supabase + Turso
Started
2024
Status
Earning revenue
Visit the product Turso case study
QuickPin screenshot

QuickPin

A free fast-capture utility for Notion. Public proof we ship native when the browser is the wrong shape, and that we maintain what we publish.

Built by
Feathered
Stack
Tauri
Started
2023
Status
Free · Maintained
Visit the product

We’re not
for you if…

  • You’ve never worked in your domain before.
  • You can’t tell us what makes your industry actually different from a textbook example.
  • You want a vendor who’ll execute a Figma file.
  • You think AI tools should write 90% of your codebase.
  • You’re shopping on price, want a spec-and-deliver gig, or need a bench.

You’re our kind
of founder if…

  • You’ve spent years in your field.
  • You’ve seen a problem only you can describe properly.
  • You need senior engineering that’s still maintainable six months in.
Tell us about your domain

Tell us about
your domain.

Tell us what you’re building and what you know about your field that nobody else does. We read every message and usually reply within a day.

Email
hello@feathered.eu
Phone
+48 664 741 894
Calendar
Book a 30-minute call ↗