Full-day overlap
Fractional CTO for UK Startups
The UK is the easiest timezone I work in: my day and a London day overlap almost entirely, so there is no asynchronous handoff to design around and no compromise hour for standups.
What is genuinely different about building in the UK is the data regime. UK GDPR is not a checkbox you tick before launch, it is a set of constraints that should shape the schema, the logging, and the vendor list from the first week. Retrofitting it costs far more than designing for it.
How this actually works
What is different about building in the UK
A full working day of overlap, not a two-hour window
London hours and my hours line up almost completely. You get a senior technical leader who is present for the whole day rather than someone you have to batch questions for, which in practice is the difference between a fractional hire that feels embedded and one that feels remote.
UK GDPR should shape the schema, not sit on top of it
Lawful basis, data minimisation, retention, and the right to erasure all have concrete engineering consequences. Deletion in particular is the one that breaks systems: if you have not designed for it, honouring an erasure request means hand-editing production. I design the data model so these are ordinary operations rather than incidents.
Subject access requests are an engineering problem
You have a statutory clock to produce everything you hold about a person. If that means someone manually grepping five systems, you will miss it as you grow. Building the export path early costs days; building it under a deadline costs weeks and a lot of goodwill.
UK enterprise procurement asks for evidence, not assurances
Cyber Essentials, ISO 27001, or SOC 2 depending on who is buying, plus real answers on subprocessors and where data physically sits. I sequence what you actually need for the deals in your pipeline rather than pursuing every certificate at once.
Hiring into a competitive, expensive market
London engineering salaries are high and the senior end is thin. I will give you a straight read on what your budget buys, when a distributed or blended team is the better call, and how to run a loop that does not lose good candidates to slow process.
How an engagement runs
Week one, month one, month three
Week 1
I find out what is actually true
Architecture review, codebase read, and honest conversations with every engineer you have. You get a written assessment at the end of it: what is solid, what is risky, what is going to break, and what it costs to fix each one. No slide deck, just a document you can act on.
Month 1
The bleeding stops and the roadmap becomes real
I fix or contain the things from week one that were actually urgent, and rebuild the technical roadmap so it has dates you can believe. If you are hiring, the role is written and the interview loop exists. If you are pre-launch, scope gets cut, usually by a lot.
Month 3
It runs without me in the room
Ship cadence is predictable, the team knows the standard, security and infrastructure are at the level your customers expect, and the decisions are documented. If the engagement is a bridge to a full-time CTO, this is where I start hiring my replacement.
Why me, for this specifically
Experience, not a capabilities deck
Plenty of people can advise on uk startups. Fewer have shipped in it, been wrong in it, and had to fix it with their own name on the commit. Here's what I'm bringing.
- Full working-day overlap with UK hours
- M.Tech in Cybersecurity: data protection is the core discipline, not a bolt-on
- Experience taking products through enterprise security review
- Invoicing in GBP or USD, whichever your finance team prefers
Pricing
Priced at $100 an hour. Not counted at it.
I value my time at $100 an hour and the retainers are sized from that, but the hours are a floor I commit to rather than a cap I bill against. If a week needs more, it gets more. A full-time CTO in the US runs about $260,000 a year before equity; I'll do that job for $60,000 at 150% commitment. Three-month minimum, then month to month.
It does not all have to be cash. The split is negotiable, from a small equity component up to roughly half and half, depending on your stage and how long we expect to work together.
Technical Advisor
$1,500
per month
Minimum 15+ hours a month
A senior technical brain on call. For founders who mostly need the big decisions checked rather than someone in the codebase.
Fractional CTO
$5,000
per month
Minimum 50+ hours a month
Around 50 hours a month as your acting CTO, usually two days a week. I own technical direction, and the roadmap ships because someone senior is accountable for it.
Embedded CTO
$8,000
per month
Minimum 80+ hours a month
Around 80 hours a month, usually three days a week, hands on the keyboard. Everything above, plus I build the hard parts myself instead of delegating them.
Questions
UK startups, specifically
Are you a GDPR consultant?
No. I am the engineering leader who makes the architecture support whatever your counsel and DPO decide. For legal interpretation you want a specialist, and I work alongside them. What I own is making sure the system can actually do what the policy promises. I am a security-first engineer with a Masters in the field, and getting a company compliance-ready is the work itself rather than a side effect of it.
Can you help us pass a UK enterprise security review?
Yes. I know which answers stall deals, and most of the work happens months before the questionnaire arrives rather than during it.
Do you invoice in GBP?
GBP or USD, whichever is less friction for you. The rate is set in USD and converted at the prevailing rate if you prefer sterling.
More general questions about cost, commitment, and how this compares to a full-time CTO are answered on the main fractional CTO page.
Earned, Not Claimed
What the founders and teams I build with say
I had the pleasure of working with Kunal while building out my MVP and I have to say that it was pleasure to both interact and work with him and his team. As a first time founder, I had a lot of self doubt and internal ruptures, however Kunal's calm, never-say-die and never-panic attitude often helped bring me back to center. I can't vouch for him enough.
Anand Tahiliani
Founder, Debaser Technologies
I had the pleasure of working closely with Kunal during my time as a Product Manager at DhunGuru. As our CTO, Kunal and his team at Panicle Tech worked closely with me across the entire product journey, from building and launching our mobile apps to developing and maintaining our web platforms. His technical expertise, ownership, and willingness to collaborate made a real difference, and I genuinely enjoyed working with him throughout the journey.
Anirudh Joshi
Product Manager, DhunGuru
Kunal helped us architect Mosler's core platform, connecting smart lock hardware, our cloud dashboard, and PMS integrations into one reliable system. The foundation he helped design in those early days still scales with us today.
Pranav Kapoor
Co-Founder, Mosler
Building in uk startups? Let's talk.
Thirty minutes. Tell me what you're building and where it's stuck, and I'll give you a straight answer on whether I can help.
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