Fractional CTO · a senior technical partner on a part-time basis

Technical decisions you can trust, without hiring a full-time CTO

A fractional CTO for founders and small companies: a senior developer who makes the technology calls with you, checks the work of your developers or agency, and tells you plainly what to build, buy or leave alone.

Book a call about technical leadership

individual quote · a monthly block of hours or a short audit

The first call is free, and I sign an NDA before it if you ask. I usually reply within 2 hours.

You have a product, a developer or an agency, and nobody on your side who can tell whether the work is good. I act as your part-time CTO: I help you choose the stack and architecture, plan the roadmap, review the code and the vendors, hire the right people and speak for the technology when investors ask. I lead the work myself and bring in trusted specialists when a task needs them.

  • Technology decisions explained in business terms, with the trade-offs
  • An independent view of your developers, agency or AI-built prototype
  • A monthly block of hours, or a short audit to start
Vlad Sedenko

Vlad Sedenko

Your online partner at every stage · 12+ years

LinkedIn ↗
12+
years in websites, apps and marketing
150+
projects: I help at every stage, from idea to growth
2–6 wks
from idea to a working product
2 h
usual time to my reply
What a technical review looks likeSample reportA fictional seed-stage startup with an app built by a freelancer. All figures are made up.
1
risk to fix before the next release
3
decisions to take this quarter
90 days
technical roadmap

State of the product

What is solid, what is fragile and what can wait.

AreaVerdictWhat to do
Architecturegood enough for nowkeep, document the main flows
Code quality and testsfragileadd tests around payments first
Hosting and backupsriskyautomatic backups and a restore test
Access and accountsunclearmove everything to company accounts

Decisions for the founder

Each one with options, cost and what happens if you wait.

DecisionOptionsMy advice
Rebuild or improverewrite / fix in placefix in place, rewrite one module
Freelancer or agencykeep / switch / mixkeep, add a review of each release
First hiresenior / mid / agencyone senior, after the audit

Security and release basics

The checks that cost little and prevent the worst problems.

  • UrgentThe only copy of the code and the server password sit with the freelancer

    If they become unavailable, the company cannot change or restore its own product.

    Next step: Code in the company's repository, access in the company's accounts, documented handover.

  • To improveReleases are made by hand, with no staging environment

    Every release can break the live product for customers.

    Next step: A staging copy and a short release checklist.

90-day roadmap

Order of work, with estimates the team can be held to.

  1. Weeks 1 to 2: access, backups and the release checklist.
  2. Weeks 3 to 6: tests around payments, then the most requested feature.
  3. Weeks 7 to 12: decide on the first hire, using the audit as the brief.

For the investor conversation

A technical summary you can put in front of an investor.

  1. What the product runs on and why that choice makes sense.
  2. What it will take to scale to the next stage.
  3. Known risks and how each is being handled.

Ways to work together

I confirm the scope and price after the first call, before you decide. No hourly rates are published because the work differs from company to company.

Technical audit

Individual quote

from 1 week

When you want an independent view before you decide anything.

  • Review of the code, infrastructure and vendors
  • Risks ranked by urgency
  • Decisions for the founder and a 90-day roadmap
  • A summary you can show an investor
Discuss an audit

Fractional CTO, monthly

Individual quote

ongoing

A steady technical partner for decisions, reviews and hiring.

  • A regular call and written follow-up
  • Reviews of releases, estimates and vendors
  • Support with hiring and onboarding
  • Answers between calls within the agreed hours
Discuss a monthly block

AI prototype to production

Individual quote

depends on scope

For an app built with Lovable, Bolt, v0 or Cursor that now has to work every day.

  • Review of the generated code
  • Security, hosting and release basics
  • A plan to make it production-ready
See prototype to production

Selected work

What clients say

  • „We worked with Vlad on a Next.js project. He knew what he was doing from day one, didn't overcomplicate things and came up with better approaches on his own. I especially value his work on the site's performance. Everything was delivered as agreed.”

    George B. CEO, finance company

  • „We needed to build an MVP fast to test our idea in practice. Vlad helped us choose sensible solutions and focus on what we really needed for launch. We didn't try to build everything at once, yet he made sure the project could grow later without starting from scratch.”

    Alex N. Product Manager at StartupX

  • „Vlad got up to speed with our project quickly and pointed out several problems we hadn't treated as priorities. He sorted out our database and security issues. I liked that he didn't just complete tasks but clearly explained why something was worth changing and what the consequences could be.”

    Michał R. CTO at TechCorp

  • „We had an app where every bigger change was becoming a problem. Vlad helped us clean up the code, rebuild some of the older parts and introduce automated tests. Working on new features is much easier now. I also appreciate his patience in explaining technical topics to people outside the development team.”

    Sara K. Product Owner at WebSolutions

Tell me about your product and your team

Write a few words about what you are building, who builds it and what decision or worry is on your mind. I'll reply whether a fractional CTO or a short audit makes sense, with a price and timeline.

Frequently asked questions

What is a fractional CTO?

A fractional CTO, also called a part-time CTO or CTO as a service, is a senior technical leader who works with a company for a set number of hours a month instead of full time. You get the decisions and oversight of a CTO without the salary and equity of a full-time hire.

Is a fractional CTO right for my startup?

A fractional CTO for startups makes sense when you have a product or a plan, outside developers or an agency, and nobody in-house who can judge the technology. If you already have a strong tech lead, you probably don't need one. I'll say so on the first call.

How much does a fractional CTO cost?

I quote individually after a short call, because the price depends on how many hours a month you need and how large the product is. You get the scope and the price in writing before any work starts. A short audit is a good way to start without a long commitment.

How many hours a month do I need?

It depends on the stage. A team with one developer and a steady roadmap needs a regular call and reviews. A company about to hire, rebuild or raise money needs more for a few months. We agree the block together and adjust it as the need changes.

How is this different from a consultant or an agency?

An agency sells you development and has an interest in selling more. I look at your technology from your side of the table: what to build, what to buy and what to leave alone. I can also build, but you don't have to hire me for that.

Can you take over a prototype made with Lovable, Bolt, v0 or Cursor?

Yes. I review the generated code, check security, hosting and releases, and give you a plan to make it production-ready. We then decide together whether to fix it in place or rebuild parts of it.

Can you help me hire developers or choose an agency?

Yes. I write the brief, prepare the technical questions, review candidates or agency proposals and can join the interviews. The hiring decision stays with you.

What about confidentiality and access to our code?

I sign an NDA, also before the first call. Code, accounts and documentation stay in your name, so the company never depends on me for access.

Do you work with companies outside Poland?

Yes. I am based in Warsaw and work with clients across Europe and remotely, in English. Calls are online at times that suit your time zone.

I usually reply within 2 hours.