Smaranda Onuțu · Fractional CTO

AI does not enter a clean room. It enters a living system.

Old code, new code, cloud costs, architecture choices, review bottlenecks, team norms, the experience your users live with, and the clients counting on it. I help founders and technical leaders read that whole system — and design the next move that holds it.

Fifteen years across architecture, engineering leadership, and org design: legacy platforms, modern SaaS systems, and the AI-reshaped stack.

Find the real constraint
The question is not whether your company will use AI. It's whether your people can grow inside the change.
Approach

Start with the real system.
Then design the path.

Most of what's labeled an "AI problem" isn't. It's a decision the team hasn't made, an architecture that can't carry the new speed, or an unowned trade-off between cost and quality. The AI part is real. It's just not usually the constraint.

I help founders and technical leaders read that system clearly, name the constraint, and design the next structure: sometimes technical architecture, sometimes decision flow, sometimes the operating habits that let the team move with judgment and speed.

Read the whole system

The codebase matters. So do the people carrying it, the business model around it, and the decisions that have been deferred for too long.

Name the constraint

When the real bottleneck is clear, the work gets calmer: fewer generic fixes, better technical choices, and less energy spent circling the same question.

Build what the team can carry

The output has to survive contact with daily work: specs people use, review habits that hold, architecture decisions the team understands, and ownership that stays.

About

A few signals from the work

The useful pattern is range: code and cloud architecture, team structure and product strategy, AI speed and review discipline, technical debt and human capacity.

Fifteen years across SaaS — designing the technical systems that serve users and the teams who build them. Architecture, engineering leadership, product strategy: usually all three at once.

Product and user experience have always been at the center of it. Not as a discipline separate from engineering — as the reason engineering exists. A system that doesn't serve the people who depend on it isn't finished yet.

AI has changed the pace and the surface area. The question I keep returning to isn't how to move faster. It's how to move in a way the humans inside the system can trust.

Smaranda Onuțu
Hi, I'm Smara!I'm glad you're here.Pick a time to think together
Mini-case 01
$ spendtimebeforereviewafter

read the architecture → spend stops compounding

Architecture-led AWS cost optimization

Before

Hosting spend scaled faster than the platform could defend.

Work

Reviewed architecture, cost drivers, and decision cadence.

After

Lower baseline spend and better performance under spikes.

−25%baseline AWS spend−30% cost per 100K users

↗ same pattern, different surface ↘

Mini-case 02
legacystructuresaas

scattered platform → one product, clear ownership

Legacy platform to SaaS product

Before

A legacy platform and distributed teams had outgrown the old structure.

Work

Led platform modernization, team structure, and analytics across 30 engineers.

After

SaaS product foundation, clearer ownership, sustained revenue lift.

+50%platform revenue30 engineers led through modernization
Emerging
humans owngray zoneagents actwhere each kind of decision lives

a working draft of the human + agent boundary

An operating model for human + agent work

Not a document. A redesign of how the team works — naming where humans decide, where agents act, and where gray-zone work earns its review.

Humans own
Judgment we hold
Architecture, hiring, customer promises — anything the team has to live with.
Gray zone
Structured review
Where rules get re-examined when reality shifts.
Agents act
Judgment we encode
What the team trusts an agent to do.
What Guides the Work

People are not the cost of progress. They are the point.

I build things that help people build things. That's been the thread through fifteen years of engineering, architecture, and leadership — and it's the foundation Big Light Studio is built on.

Good AI work should leave a team with more judgment, not less. More capacity, not just more output. More ownership, not a quiet dependency on one person or one tool.

I design the conditions under which other people become capable of things they couldn't do before. I build the blueprint, release it without attachment to authorship, and measure success by watching your team run with it as if it was always theirs.

Direct enough to name the hard constraint, careful enough to carry the people who have to live inside the new system.

LinkedIn Recommendations

What people say after the work is real

Three views of the same pattern: technical depth, calm execution, and the ability to make messy decisions understandable.

She’s a calm, clear communicator who translates strategy into execution, earns trust across engineering and leadership, and creates clarity in messy situations.
Tim Kenney · C-suite executive · LinkedIn recommendation, Jan 2026
Smara has a fearless approach to new and complex problems. She dives in, breaks things apart, and comes back with solutions that are both original and solid.
Lally Boright · Director of Product & Engineering · LinkedIn recommendation, Nov 2025
Smaranda is that rare engineering leader who can redesign systems and cultures at the same time.
Cristian Terpea · Head of Software Engineering · LinkedIn recommendation, Oct 2025
Frequently Asked

I'm not sure if my problem is an AI problem or a CTO problem.

What does an AI operating model actually look like in practice?

How do you keep a team from breaking when AI changes the pace?

What technical decisions does this work usually surface?

What does a typical engagement look like?

Can you work alongside our existing engineering leadership and team?

Where are you based?

Start with the thing that feels stuck.

No pitch deck. No polished brief. Tell me what keeps circling.

Walk me through what's stuck