How much time do we commit to?

Engagements are scoped as a defined number of days per month, set to match your priorities. We size it with you and adjust as needs change.

Can we start with an assessment first?

Yes, and it is a common path. Many teams start with an Infrastructure Reliability Assessment, then retain fractional capacity to execute the roadmap it produces.

Do you replace our engineers?

No. Fractional SRE adds senior leverage alongside your team – decisions, reviews, and mentorship – so your own engineers grow, not depend on us indefinitely.

HomeServicesFractional SRE / Platform Engineering

RETAINER

Senior infrastructure expertise, without the full team.

Fractional SRE / Platform Engineering

RTZ Labs provides fractional SRE and fractional staff engineering – senior Kubernetes, Istio, and AWS infrastructure capacity embedded into your engineering team for a defined number of days per month, without hiring a full platform or SRE organization.

Many growing companies need senior infrastructure leadership before they can justify building an entire Platform or SRE organization. Fractional SRE fills that gap: senior engineers working alongside your team for a defined number of days per month – making architecture decisions, driving reliability work, reviewing changes, analyzing incidents, and supporting your developers. You get staff-level infrastructure judgment on a predictable cadence, without the cost and lead time of a full-time hire.

Provider: RTZ Labs
Engagement type: Monthly retainer
Who it is for: Startups and scale-ups with an existing engineering team but no dedicated SRE or platform organization
Availability: Remote, serving the United States and Canada
Technology scope: Kubernetes, Istio, Envoy, AWS, Terraform, Observability, Service Mesh
Related expertise: Kubernetes AWS Istio Observability

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What you get

Clear deliverables and a practical handover – so your team can keep moving after the engagement.

Defined monthly cadence

Agreed days per month, a clear communication rhythm, and a living priority list tied to your goals.

Architecture and reliability work

Roadmap ownership, design decisions, technical reviews, incident analysis, and hands-on implementation where it unblocks the team.

Developer support and enablement

Guidance, capacity planning, and mentoring so your engineers grow and the improvements outlast the engagement.

Typical outcomes

Senior infrastructure judgment available on a predictable cadence
Steady progress on the reliability and platform backlog that never gets staffed
Better architecture decisions and safer changes through senior review
Your engineers levelled up instead of dependent on a black box

Problems this solves

The situations teams are usually in when they bring us into fractional sre / platform engineering work.

Senior infrastructure leadership is needed before a full platform team can be justified
The team is capable but stretched, and infrastructure work keeps slipping
Architecture decisions are being made without staff-level review
Incidents happen but nobody has time to analyze them properly
Hiring a staff-level infrastructure engineer is slow, expensive, or not yet approved

How we work

A predictable flow that reduces risk, keeps stakeholders aligned, and delivers real progress fast.

Align

Define success, access, cadence, and the first 30-day focus with your engineering leadership.

Embed

Join your rhythm – design reviews, roadmap, and execution on priority infrastructure work.

Deliver

Ship reliability and platform improvements each cycle, and analyze incidents as they happen.

Review

Retrospect outcomes and reset priorities for the next period with your team.

Good fit if…

You need senior infrastructure leadership but cannot justify a full Platform/SRE team yet
Your team is capable but stretched, and infrastructure work keeps slipping
You want continuity: architecture, reliability, and incident analysis over time
Hiring a staff-level infrastructure engineer is slow, expensive, or not yet approved

Not ideal if…

You need 24/7 primary on-call coverage as the main deliverable
There is no internal engineering team to embed with

FAQs

Quick answers to common questions about this service.

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