Full Stack Developer Recruitment: How UK Agencies Screen You

Full stack developer recruitment in the UK is less mysterious than it feels from the outside. Most of the vacancies an agency is working on are also advertised publicly, which means you can see the shape of the market before you ever speak to a recruiter. Indeed has listed 46 full stack developer jobs in Bournemouth, 101 in Crawley and 44 in Chester. Reed.co.uk has carried 13 full stack developer jobs within 10 miles of Guildford, and Glassdoor has shown 375 lead full stack developer jobs across the United Kingdom. Those figures shift week to week, but they tell you something useful: the demand is spread around the country rather than concentrated in one city.

What that also means is competition. A single advertised role can attract a long list of applicants, and the agency's job is to cut that list down before the client ever sees it. Understanding that filter is the difference between applying constantly and actually getting put forward.

What the UK full stack job market looks like right now

Job boards, agency sites and specialist job pages all list full stack roles, and the numbers vary enormously by location. The table below reflects what public listings have shown.

Location or scope	Where it was listed	What the listing showed
Bournemouth	Indeed	46 full stack developer jobs, with roles posted by Metrica Recruitment, Pulse IT Recruitment, CGI and others
Guildford	Reed.co.uk	13 full stack developer jobs within 10 miles
Crawley	Indeed	101 full stack developer jobs, including employers such as CGI, Electronic Arts and Northrop Grumman
Chester	Indeed	44 full stack developer jobs, including CGI, Alex James Resourcing and Maxwell Bond
Ipswich	Glassdoor	Full stack developer vacancies listed for the town, with the count changing between snapshots
South West England	Guardian Jobs	A smaller pool of full stack developer roles
United Kingdom, contract	Reed.co.uk	A dedicated contract full stack developer section covering roles nationwide
United Kingdom, lead level	Glassdoor	375 lead full stack developer jobs

Treat every count as a snapshot rather than a fixed fact. Listings expire, agencies repost, and the same vacancy can appear on three sites at once. Check the live board before you draw conclusions about any single town.

The screening funnel between application and offer

Most agency-led processes follow a recognisable sequence. The names differ, the order sometimes shifts, and some clients skip stages, but the logic is consistent: each step removes uncertainty for the employer.

Stage one: CV and keyword screening

A recruiter or an applicant tracking system reads your CV against the job description. Databases and job boards encourage keyword filtering, which is why listings emphasise specific technologies. If the advert asks for React, PHP or MySQL and those words appear nowhere on your CV, you may be filtered before a human reads a single line of your experience.

Stage two: the recruiter telephone call

This is a short conversation, often fifteen to thirty minutes, covering your current situation, notice period, salary or day rate expectations, right to work, and location or hybrid preferences. Recruiters are checking whether you are straightforward to place. Vague answers, unexplained gaps or a rate that sits well outside the advertised band usually end the conversation there.

Stage three: technical screening and take-home tasks

Technical checks vary widely. Some clients ask structured questions about JavaScript, APIs or database design. Others set a take-home exercise, a timed coding test, or a short pairing session on a shared editor. What they are testing is not recall of syntax but whether you can reason through a problem, explain your choices and respond sensibly when something does not work first time.

Stage four: the client interview and pairing session

By this point the agency has already vouched for you, so the interview is about fit. Expect questions about how you have worked with designers, backend colleagues or non-technical stakeholders, and how you handle competing priorities. For full stack roles, interviewers often probe both ends of the stack to check whether your profile is genuinely broad or just a list of frameworks.

Stage five: offer, references and rate checks

Permanent offers typically involve references and occasionally a background check. Contract roles often involve confirmation of day rate, IR35 status and start date. Ask the agency to confirm these details in writing before you resign from anything.

What recruiters check on your CV before they call

• Job titles that map onto the role being advertised, rather than internal titles nobody recognises.
• Named technologies in context: where PHP, MySQL, ReactJS, Symfony or API work actually appeared in a project.
• Evidence of shipping something, whether commercial, freelance or personal.
• Dates that add up, with unexplained gaps that are easy to ask about.
• A live portfolio or repository link that loads without a login prompt.
• Location and working pattern, since hybrid arrangements often decide whether you are put forward at all.

Permanent and contract roles are screened differently

The two hiring lanes reward different signals, and agencies handle them with different questions.

Area	Permanent roles	Contract roles
Main question from the recruiter	Will this person grow with the team?	Can this person deliver from week one?
CV emphasis	Career progression and breadth across the stack	Specific technologies, project lengths and delivery record
Typical discussion points	Salary expectations, notice period, benefits	Day rate, contract length, IR35 status, start date
Where the roles are advertised	Broad job boards and agency sites	Dedicated contract sections on boards such as Reed.co.uk

If you are early in your career, permanent roles are usually the more forgiving entry point. Contract work tends to assume you have already delivered in a commercial setting.

Why portfolio evidence carries more weight than certificates

A certificate tells a recruiter that you completed something. A working project tells them what you can build. When two candidates look similar on paper, the one with a deployed application, readable code and a short explanation of the decisions behind it is far easier to put in front of a client.

Your portfolio does not need to be complicated. A small application with authentication, a database, an API layer and a clean interface demonstrates more of the stack than five unfinished experiments. Write a short README for each project explaining what it does, which technologies you used and what you would improve next. That document often does more work in a screening call than the code itself.

How Code Success supports candidates through recruitment

Code Success is a UK-based online coding bootcamp built around a single flagship programme. The Full Stack Developer Course costs £4,995, runs for nine months and is self-paced, covering HTML, CSS, JavaScript, PHP, MySQL, ReactJS, Symfony, XML and JSON, and APIs. The focus is on learning to think like a developer rather than memorising syntax, which matters when an interviewer asks you to talk through your reasoning.

Candidates who want to test the water first can take a free five-day taster course and build a To-Do List app with HTML, CSS and JavaScript. Learners also get an AI assistant called LeW-De, human mentors and a Slack community, plus job placement support through UK recruitment agencies. That support is designed to help you present your portfolio and CV in the way agencies actually read them. Details of the course, including current pricing and any regional offers, are worth confirming directly with Code Success before you enrol.

Common reasons candidates get filtered out

• A CV that lists frameworks without saying what you built with them.
• A portfolio link that is broken, private or full of unfinished repositories.
• No clear answer to basic questions about how the web works.
• Expectations that do not match the advertised salary or day rate.
• An inability to explain a previous project without reading from notes.
• Applying for senior or lead roles without evidence of leading anything.

Frequently Asked Questions

Is full stack developer still in demand in the UK?

Public job boards continue to carry full stack vacancies across the country, from towns such as Bournemouth, Chester, Crawley and Guildford to larger regional markets and UK-wide contract listings. The volume varies by week and by location, so check live boards rather than relying on any single figure. Demand exists, but so does competition for every advertised role.

Do UK agencies require a degree for full stack roles?

Some clients specify a degree, and some do not. Agencies work to the brief they are given, so the requirement changes from role to role and sector to sector. A strong portfolio, relevant project work and clear communication can carry a candidate a long way where the employer is open minded about academic background.

How long does full stack developer recruitment usually take?

It depends on the employer and the level of the role. A straightforward permanent process might move from first call to offer in a few weeks, while contract roles can move faster because the client needs cover quickly. Ask the agency for the client's intended timeline at the first call and confirm it in writing.

What should a junior full stack portfolio contain?

Two or three finished projects are usually enough. Aim for something that shows a front end built with HTML, CSS, JavaScript or ReactJS, a backend with a database such as MySQL, and at least one project that talks to an external API. Include a short README explaining your decisions and keep every link working.

Can I apply for contract roles without commercial experience?

You can apply, but contract roles are generally screened for people who can deliver from the first week. Clients hiring on a day rate rarely want to fund a learning curve. Building commercial or freelance experience first, then moving into contract work, is usually the smoother route into that part of the market.