Backend engineering for teams that ship quietly.
ZLOVEFU is a small studio building the layer under your product — APIs, data models, internal tools and the integrations that keep them talking. Senior engineers only, no hand-offs.
Typical reply within one business day · Fixed prices published, not "contact us"
Three things, done properly.
We take on one or two engagements at a time and stay on them from first commit to hand-over.
Backend services
APIs, workers and schemas designed to be read by someone else two years from now. Python and Go, deployed however you already deploy.
Internal tools
Admin panels, dashboards and automations that replace the spreadsheet a team has outgrown — the work nobody puts on a roadmap.
Integrations
Payments, CRM, email, and the awkward legacy API nobody wants to touch — connected, retried and monitored.
The three shapes of problem we get called for.
No logo wall — most of this work sits underneath a product nobody outside the company sees. What we can show is the shape of the system and what lands in your repository.
Payments that never quite agree
Webhooks retried, refunds late, rounding off by a cent. The event log becomes the source of truth and reconciliation becomes a query.
The spreadsheet that became the company
4,000 rows, eleven colours, one person who knows which columns matter. The rules get written down before any UI is built.
Integrating the system nobody touches
The legacy service works. Cutover, not code, is the hard part — parallel paths, output diffing, and a flag to roll back.
Things you can click, read and argue with.
We would rather show a working system and a written argument than a stock photo of a whiteboard.
API sandbox
A working HTTP service in your browser — idempotency keys, 429s, cursor pagination. Break it on purpose.
Five engineering notes
Written after enough incidents to be opinionated. No frameworks, no hot takes.
Published prices
Three engagement models, with the numbers on the page. No "contact us for a quote".
How the studio works
One or two engagements at a time, senior engineers only, and a written record of every decision.
Scoped in days. Shipped in weeks.
No discovery phase that bills for six weeks and produces a deck.
Scope
One call, then a written brief: what the system does, what it explicitly will not do, and what it costs to get there.
Build
Repository access and a staging environment from week one. Progress is a running system, not a status report.
Hand over
Docs, runbooks and a walkthrough with whoever maintains it next — including the decisions we made and why.
Boring tools, chosen on purpose.
Have something that needs to hold up?
Tell us what you are building and where it hurts. We reply within one business day.