Cybersecurity · Software · AI · CTO — London
Senior engineers for the hard parts.
We secure it, build it, add the AI, or lead the whole technical side. Fixed price. No juniors.
Services
Four things we do.
Often all four for the same client. Pick one to start.
01
Cybersecurity
Pen tests and security reviews with fixes, not just findings.
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02
Software Development
Web apps, APIs and platforms built by senior engineers.
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03
AI Integration
LLM features that ship to production and hold up there.
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04
CTO Consulting
A fractional CTO for the decisions you can’t get wrong.
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Client story
“Ten Peaks led the development of our CRM platform from the ground up. We came to them with a product spec and a tight runway, and they delivered something we're genuinely proud of. The architecture is clean, the codebase is documented, and it's already scaling to handle volume we didn't anticipate hitting so soon. What made the difference was having direct access to the developers throughout — weekly calls with the people actually writing the code, not account managers. They pushed back when our spec had gaps, proposed better approaches, and were transparent about trade-offs. That kind of honesty is rare. We've already signed them for the next phase.”
How it works
Three steps. No runaround.
- 01
Call
Thirty minutes. You explain the problem, we tell you honestly whether we are the right fit.
- 02
Scope
A written plan with a fixed price. No hourly billing, no surprise invoices.
- 03
Ship
Senior engineers do the work, with weekly updates and a clean handover.
Who you work with
Josh Da Costa
CTO & Founder
The engineer you speak to is the one who does the work. Every project is led by Josh, with a small team of senior specialists behind him.
- years in production
- 10+
- years in production
- projects shipped
- 30+
- projects shipped
- juniors
- 0
- juniors
Pricing
Fixed price, agreed upfront.
Every engagement is scoped and quoted before anything starts.
Sprint
1–2 weeks
from £2,500
One scoped feature, integration or fix.
- Written scope before coding
- Daily async updates
- Full handover
Project
Most common3–8 weeks
from £7,500
An end-to-end build, architecture to production.
- Everything in Sprint
- Weekly calls with the engineers
- 30 days post-launch support
Retainer
Monthly
from £2,000 / month
A fixed block of senior hours, on call.
- Dedicated Slack channel
- Priority response
- Monthly CTO strategy call
Tell us what you’re building.
A senior engineer replies within one business day.
Contact
Start a conversation.
Tell us the problem. You get a straight answer, even if the answer is “not us”.
josh@tenpeakstech.comLondon · replies within one business day