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serbyn.io

fractional ai architect

Keep your agent platform reliable and cheap as it scales — with an architect on the hook.

Ongoing architectural ownership of your agent platform, about one day a week: I hold the reliability and cost lines so quality and spend stay in control while your team keeps shipping.

from $4,000/mo~1 day/week · 3-month minimum

Fixed-scope audits · Read-only by default · NDA on request · US/UK/EU remote

What you get

Standing reliability & cost ownership

A named architect accountable for whether your agents stay trustworthy and affordable — not a one-off report.

Evals & guardrails, maintained

The trajectory and false-green evals stay current as your agents change, so regressions surface before users find them.

Pre-ship architecture review

New agents and major changes get reviewed against the trust and cost model before they reach production.

Gated-rollout discipline

Changes promote through trust tiers and budget guards with a fast path back — the same protocol, applied continuously.

Monthly reliability & cost report

A short written read on where reliability and spend stand, and what to do next.

Direct async access

A direct line for architectural questions between sessions — not a ticket queue.

What ongoing ownership looks like

A predictable weekly cadence built on the same operator protocol as the audit.

Weekly cadence

About one focused day a week on your platform — reviewing, measuring, and moving the reliability and cost work forward.

Evidence-gated changes

Every change I recommend or make is gated on evals and cost metrics, promoted only when they hold.

Cost tracking

Per-service cost stays instrumented so spend never drifts quietly upward as traffic grows.

Escalation & handover

Clear escalation for incidents and clean documentation so your team is never dependent on me being online.

prefer something lighter?

Advisory

$200/hr10-hour minimum block

Direct architectural advice on agent reliability and LLM cost, booked in a 10-hour block. No monthly commitment — a direct line to architectural advice on agent reliability and LLM cost when you need it.

Timeline

  1. 01

    Month 1 — Baseline

    Weeks 1–2

    Establish the reliability and cost baseline, stand up (or adopt) the evals, and agree the rollout gates.

  2. 02

    Ongoing — Weekly cadence

    Every week

    Roughly one day a week owning the reliability and cost work; monthly written report.

  3. 03

    Quarterly — Direction

    Each quarter

    Step back on architecture direction, scaling risks, and where to invest next.

Who it’s for

  • You’re running agents in production and need someone accountable for reliability and cost over time.
  • You want senior architectural judgment without a full-time hire.
  • You can commit to at least three months so the work compounds.
  • You need a full-time engineer or an implementation team — this is ~one day a week of architecture.
  • You want a one-off deliverable — start with an audit or teardown instead.
  • You’re not ready to gate changes on evidence.

FAQ

What’s the time commitment?
About one day a week, with a three-month minimum so the reliability and cost work has time to compound. Scope can flex up by agreement.
Can it start from an audit?
Yes — that’s the usual path. The Production-Readiness Audit gives us a shared baseline, and its fee is credited against a retainer started within 60 days.
Do you take write access to our systems?
Read-only by default. Write access is scoped to agreed changes and everything ships through the same gated rollout.
What if we need less than a full engagement?
Then advisory is the better fit — direct architectural advice booked in a 10-hour block, without the ongoing commitment.

Ready to start?

Book a 30-minute systems call and we’ll confirm scope and timing.