Hiring your first or second engineer as a founder is one of the most consequential decisions you'll make — and if you're figuring out how to hire a software engineer in the UK without an HR team or a recruiter on retainer, the process can feel opaque fast. Where do you post? What do you legally need? What's a reasonable offer? This guide cuts through the noise and gives you a practical playbook you can actually follow this week.
Write a Job Description That Attracts Engineers (Not Just Anyone)
Engineers read job descriptions critically. Vague, buzzword-heavy ads get ignored or attract the wrong candidates.
A strong JD for an early-stage UK engineering role should include:
- The stack, honestly. List what you're actually using, not what you aspire to use. Engineers want to know if they'll be working in Python or wrestling a legacy PHP monolith.
- The scope of ownership. Early-stage engineers want to know if they'll be making real decisions or just shipping tickets. Be explicit.
- Salary range. Engineers in the UK increasingly skip roles that don't show a salary band. Hiding it signals you're not serious or you're lowballing. Research current market rates on sites like Levels.fyi or Glassdoor — London commands a significant premium over most other regions.
- Remote/hybrid/on-site policy. Be clear. "Flexible" without specifics is a red flag to candidates.
- Company stage. "We're a 5-person team, pre-Series A, backed by [X]" tells a candidate far more than "a dynamic, fast-growing startup."
Keep it under 600 words. Long JDs don't get read.
Where to Find Software Engineers in the UK
The UK has a strong engineering talent pool, concentrated but not exclusive to London, with growing hubs in Manchester, Bristol, Edinburgh, and Leeds.
Channels worth using:
- LinkedIn Jobs — still the default, especially for mid-senior hires. Paid posts get more visibility but even organic posts from founders perform well when the founder's profile is active.
- Otta (now Worksome) — popular with UK engineers at growth-stage companies.
- Hackernews "Who's Hiring" — monthly thread, free, high signal for technical founders.
- GitHub Jobs alternatives — since GitHub Jobs shut down, try Wellfound (formerly AngelList) for startup-focused engineers.
- Your network — genuinely the highest conversion rate for a first or second hire. Post on LinkedIn yourself, personally, not just the company page.
Don't spray-and-pray across 10 boards. Pick two or three, write one excellent post, and distribute it.
How to Structure the Interview Process Without Wasting Everyone's Time
As a small team, your interview process is a signal about how you operate. A bloated process with six rounds will lose good candidates to companies that move faster.
A lean but effective process for a founding engineer role:
- Async intro — a short Loom or written brief from you explaining the role and what you're building
- Intro call (30 min) — mutual fit check, not a technical screen yet
- Take-home or live technical — one task, time-boxed, relevant to actual work (not whiteboard puzzles)
- Final conversation — meet a second team member, discuss the offer, ask their questions
Pay people for significant take-homes if you can. It signals respect and improves completion rates.
Employment Law and Contracts: What UK Founders Need to Know
UK employment law has more employee protections than the US, and getting this wrong early is expensive. A few things to get right from day one:
- Employment status matters. "Contractor" vs "employee" isn't just a label — HMRC's IR35 rules govern whether someone working exclusively for you can genuinely be self-employed. If in doubt, seek advice. You can read the official guidance at https://www.gov.uk.
- Written statement of terms — UK law requires you to provide a written statement of employment particulars on or before the first day of employment.
- Probation periods — common in the UK, typically 3-6 months. Include it in the contract.
- Holiday entitlement — the UK statutory minimum is 5.6 weeks per year (including bank holidays). Many engineering roles offer more.
- IP assignment — make sure your contract explicitly assigns intellectual property created during employment to the company. A standard UK employment agreement should cover this, but verify it's in there.
Use a proper employment contract template from a UK employment solicitor, not a US template with the serial numbers filed off.
Making the Offer and Closing the Candidate
Engineers at early-stage startups are often choosing between you and a safer, better-paying role at a larger company. The offer stage is where founders lose candidates unnecessarily.
- Move quickly. If someone is good, assume they're interviewing elsewhere. Days matter.
- Equity is real currency. If you're offering equity, explain it properly — percentage or share count, vesting schedule (4 years with a 1-year cliff is standard), and what the current cap table looks like. Vague equity offers are worse than no equity offer.
- Personalise the offer conversation. Get on a call. Don't just email a PDF. Address their specific questions or hesitations directly.
- Be honest about risk. Good engineers at this stage know it's a bet. Founders who are candid about uncertainty are more trustworthy, not less.
If your process up to this point has been structured well, this conversation should feel like a formality, not a negotiation.
Streamlining the Process Without a Recruiter
One of the practical problems for a small team running a search is that the admin — tracking applicants, chasing responses, coordinating availability — eats founder time. Penroll is built specifically for this stage: it uses AI to handle the screening and coordination work so you're only spending time on candidates who actually fit, without paying a monthly subscription. Pricing is per hire, with your first planned hire free and packages from $19 per hire after that — which makes more sense than a retainer when you're hiring one or two engineers, not running ongoing recruitment.
Hiring your first engineer in the UK doesn't require a recruiter or an HR team — it requires a clear process, honest communication, and faster decisions than you think you need to make. Get the job description right, use two or three channels well, keep the interview process tight, and close quickly when you find someone good.