Engagement · Advised, then built

Systellar Space. When the first conversation is whether to ship at all.

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

In production since 2024.

Advised, then built
Engagement shape
2024
Started shipping
Satellite data
Domain
In production
Status

What the founders brought

Real domain depth.
A prototype.
And an architecture that had outgrown it.

Satellite data is a lot of bytes in expensive places. Making raw streams useful to non-space-engineers is partly a pipeline problem (storage, processing, access control) and partly a product problem (what does a user even want from this).

The founders had the domain depth and an early build. What they didn’t have was confidence the thing they’d prototyped would survive the next phase — or that it should. The honest first question wasn’t “how,” it was “whether.”

Two founders with the right domain. One prototype. The architecture answer wasn’t in the prototype — it was in the conversation about what the product was actually for.

How we worked

Started as advisory.
Converted to a build engagement once the technical answer was clear.

The first phase looked like an audit. What’s load-bearing in what they’ve built. What scales. What won’t. What’s the actual product surface and what’s engineering that should disappear into the floor.

The answer was: “a lot of this stays. The data ingestion layer needs to look different.” We rebuilt that layer; the founders kept ownership of the rest. The relationship that started as advice became a partnership the moment the technical verdict was honest enough that the founders trusted it.

From the founder

“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

What we built

Architecture work,
then the rebuild it pointed at.

The audit produced a written verdict: a sequence of decisions, a new shape for the data layer, and a clear line between what should be rebuilt and what should be left. Then we built the part that needed building.

Phase 01

Architecture review

Code walkthrough, stakeholder interviews, infrastructure audit. The output was a written register: what stays, what changes, in what order. Time-boxed.

Phase 02

Data ingestion rebuild

The pipeline that pulls satellite streams into a queryable shape. Designed to scale from prototype loads to production loads without re-architecture for each step up.

Phase 03

Production handoff

We stayed long enough that the founders’ team could maintain what we shipped without a knowledge gap. No tarball. No black box.

Status

In production since 2024.
The shape that started in advice is the shape that’s still running.

Systellar continues to ship. The early decisions held. The thing we said would scale, scaled. The audit-shaped on-ramp turned out to be the right shape for the engagement that followed — which is, on this site, the entire argument for booking one.

Visit systellar-space.com

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