ON3 Works is an AI-native technical recruitment agency that finds, vets and shortlists engineers, developers and IT specialists for companies hiring in the United Kingdom and Spain.
We close more than 100 hires a year, charge only when a hire starts, and send a first qualified shortlist within 24–48 hours.
Our AI pipeline searches, filters and screens candidates, including live screening conversations, and hands you a ranked shortlist with transcripts. It suits urgent individual-contributor roles and backfills. The fee is 7% of first-year salary.
Everything in Agentic, plus a live technical interview with a senior engineer (8–15+ years) from the same domain, and manager-level reference checks. It suits staff, principal, founding and leadership hires. The fee is 20% of first-year salary.
We publish free benchmarks from our own searches and the major 2026 salary guides: what companies pay tech roles in Spain, and what UK recruitment agencies charge. Hiring managers use them to budget a role before they open it.
See pricing → Recruitment agency fees UK → Recruitment fee calculator →
Traditional contingency agencies in the UK charge 15–25% of first-year salary, and usually 18–22% for technical roles. On an £80,000 hire, that's £5,600 with ON3 Agentic versus £14,400–17,600 at typical tech agency rates.
Retained search firms charge 25–33%, paid in three instalments that start on engagement. ON3 is success-fee only on both tiers: you pay when the hire starts, with a 60-day (Agentic) or 90-day (Atelier) free replacement window.
Platforms like Toptal and Turing bill $60–200+ an hour for contract talent. ON3 places permanent employees for a single one-off fee, with no hourly billing and no monthly subscription.
The industry average time to fill a role is about 44 days, and 50–70 days for senior engineering. Our AI has already indexed more than 1.7 million technical profiles, so most teams see qualified candidates within two working days.
Most agencies screen candidates through a recruiter reading a CV. On Atelier searches, a senior engineer who has done the job interviews every finalist on system design, code and architecture. Twelve-month retention across our placements is 90.7%.
John and Daniel Kinloch are brothers from Mallorca. They started ON3 Works in 2022 because most agencies didn't really vet candidates: they searched LinkedIn and forwarded CVs. So the brothers built their recruiting model around AI and engineer-led vetting from day one.
Today the team is the two founders, a panel of senior engineers who run Atelier interviews, and the recruiting AI John built, which also powers hiron.ai. We work fully remotely from Mallorca, in English, Spanish and Catalan.
Daniel leads clients and operations. He works with hiring teams and candidates every week, from the first brief to the accepted offer.
The founders also run Hostelería Mallorca, a recruitment agency for hotels and restaurants built on the same technology. hosteleriamallorca.com →
Fill in three fields (work email, role and location) or book a 15-minute call with John.
We confirm the must-haves, salary range and interview process on a short call, and recommend Agentic or Atelier for each role.
You receive qualified candidates with screening notes, and interview transcripts on Atelier. Senior or niche searches can take a little longer.
We coordinate interviews, collect feedback from both sides and help close the offer. On Atelier searches, you run about 3.2 client interviews per offer.
We invoice the success fee on the candidate's start date. If the hire leaves within the replacement window, we replace them at no extra fee.
You work directly with the founders: John on search and technology, Daniel on process and candidates. We communicate by email and video call.
Yes. ON3 Works is a technical recruitment agency for permanent hires, built around its own AI rather than manual LinkedIn searches. A person validates every candidate before you see them.
Brothers John and Daniel Kinloch founded ON3 Works in Mallorca in 2022. John leads product and technology; Daniel leads clients and operations.
We hire in the United Kingdom and Spain, on-site, hybrid or remote. We also help companies based elsewhere hire engineers in either country.
7% of first-year base salary on Agentic, or 20% on Atelier. Both are pure success fees with no deposit or retainer.
Toptal places freelance contractors billed by the hour. ON3 Works places permanent employees for a single one-off fee.
If the hire leaves within 60 days (Agentic) or 90 days (Atelier), we find a replacement at no extra fee.
Talk to John directly, or send us the role and we'll come back with a qualified shortlist.