# Services: chern0.dev

Four fixed-scope engagements. One senior person owns the whole thing, from the first question to the launch.

## AI Product Sprint

2–3 weeks, from €6k. From idea to an evidence-based go or no-go.

- Market and competitor research with dated sources
- Unit-economics model: cost per user, cost per request, margin at scale
- Architecture and model shortlist, with a small bake-off on your real inputs
- A working prototype of the core loop

Proof: Clearcut, Glyco and Photco research; the HireMike voice-stack decision.

## Idea to Launch

6–10 weeks, from €25k. A production MVP that can take payments on day one.

- Auth, billing, analytics, status page and cost alerts
- Built in vertical slices; you verify each one before the next starts
- CI, docs and a handover, so your team or the next engineer can continue
- You own the code, the cloud accounts and the data

Proof: Clearcut went from first commit to paid launch in 6 days.

## AI Reliability & Cost Review

1–2 weeks, from €4k. For teams with an AI feature that is flaky or expensive.

- An eval harness on your real traffic, with quality, latency and cost per request
- A model bake-off, including cheaper and open-weight options
- Fallbacks, guardrails and caching where they pay off
- A written report with the changes ranked by impact

Proof: Agent eval harnesses, Whisper hallucination gating, rule-oracle bake-offs.

## Agentic Engineering Setup

2–4 weeks, from €8k. Coding agents working inside your team, safely.

- Ticket to reproduce-first test to draft PR, running in your CI
- Review agents and PR-comment responders
- Claude Code or Codex harnesses with skills, hooks and permissions
- A buildability agent that checks designs against your codebase

Proof: Jira-to-PR agents and a Figma buildability agent in production use.

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Haris Muhibić · chern0.dev · haris@chern0.dev · Book a call: https://calendar.app.google/qiN9zJrS5gSqQPky8