Whether you're building a mobile app, a web platform, an enterprise system or all three, hire vetted application developers who join your team in as little as 7 to 14 days. Add one specialist, extend your in-house team or bring in a complete dedicated team, managed during UK business hours.
- London-headquartered since 2019
- You interview every developer
- NDA and full IP ownership
- Scale up or down monthly
One partner for every type of application developer
Most applications need more than one skill set. A customer app might need iOS and Android developers, a back-end developer for the API, a web developer for the admin portal and a designer to tie it together. Hiring each role separately in the UK is slow and expensive.
When you hire application developers through Fulminous Software, you get vetted engineers matched to your platform and stack, ready to work in your tools and join your stand-ups. You stay in control of priorities and code; we handle vetting, contracts, equipment, cover and technical oversight.
Prefer a fully managed build instead? See our custom application development services.
Application developers you can hire
Choose by platform or technology. Each link takes you to a page with more detail on that role.
Mobile app developers
Native iOS (Swift) and Android (Kotlin) developers for consumer and business apps.
Hire mobile app developersCross-platform app developers
Flutter and React Native developers who build for iPhone and Android from one codebase.
Web application developers
Front-end, back-end and full-stack developers for portals, dashboards and SaaS.
Hire web app developersReact developers
React and Next.js specialists for fast, modern interfaces.
Hire React developersNode.js developers
APIs, real-time features and JavaScript back ends for web and mobile apps.
Hire Node.js developersPython developers
Django and FastAPI back ends, data features and automation.
Hire Python developers.NET developers
C# and ASP.NET Core for enterprise and desktop applications.
Hire .NET developersAI developers
Developers who add AI assistants, smart search and automation to your apps.
Hire AI developersWe can also provide UI/UX designers, QA engineers and DevOps specialists to support your developers.
What our application developers build
Customer-facing mobile apps
Booking, ordering, loyalty and account apps for iPhone and Android.
Web platforms and portals
Customer portals, dashboards and SaaS products that run in the browser.
Enterprise applications
CRM, ERP and workflow systems that connect teams and data.
Cross-platform apps
One codebase for iOS, Android and sometimes web, reducing build and upkeep costs.
APIs and integrations
Secure back ends connecting your apps to payments, CRMs and third-party services.
Legacy app modernisation
Upgrading or rebuilding ageing apps without disrupting users.
Choose how you hire application developers
Pick the model that matches how much control you want and how long you need help.
| Model | Best for | Who manages the work | Billing |
|---|---|---|---|
| Dedicated developer | Ongoing work on one application | You, with our technical support | Monthly |
| Team augmentation | Adding mobile, web or back-end skills to your team | You | Monthly or hourly |
| Dedicated app team | Building a full app without growing headcount | Our project manager, reporting to you | Monthly |
| Hourly support | Maintenance, fixes and small improvements | Shared | Hourly |
Want a managed project with a fixed scope instead? Read our guide on outsourcing app development in the UK.
How hiring application developers works
From first call to a developer working on your app usually takes 7 to 14 days.
Share your needs
Tell us about your app, platforms, stack, seniority and start date.
Get matched profiles
We shortlist vetted developers whose experience fits your application.
Interview and test
Run your own technical interviews or tasks, and hire only who you're confident in.
Onboard securely
NDA, contract and least-privilege access to your repositories and tools.
Start and review
Regular check-ins, with a replacement arranged if the fit isn't right.
How we vet application developers
Every developer is assessed on the skills that matter for real, production applications, not just CV keywords.
That gives you a shortlist worth interviewing rather than a pile of profiles to sort through.
- Hands-on coding in your platform and stack
- Clean, maintainable and tested code
- API design and integration experience
- App store release experience for mobile developers
- Security basics, such as authentication and data handling
- Git workflows, code review and agile practices
- Clear written and spoken English
Cost to hire application developers in the UK
Indicative rates for a mid-level to senior developer. Your quote depends on platform, skills, seniority and contract length.
| Option | Hourly rate | Monthly (full time) | Best for |
|---|---|---|---|
| UK-based app developer | £60 to £120 | £7,000 to £12,000+ | On-site work, regulated projects, close daily collaboration |
| Hybrid team (UK management, offshore developers) | £25 to £50 | £3,000 to £6,000 | Long-term development at lower cost with UK-hours coordination |
Rates are indicative and exclude VAT.
Hiring through us vs employing in-house
| Cost | Employing in-house | Hiring through Fulminous |
|---|---|---|
| Employer National Insurance | 15% on earnings above the threshold | Included |
| Workplace pension | At least 3% employer contribution | Included |
| Recruitment | Agency fees or weeks of hiring time | No fee |
| Equipment, devices and software | Paid by you | Included |
| Holiday and sickness cover | Work pauses | Cover arranged |
| Scaling down | Notice periods and redundancy rules | Monthly notice |
Budgeting for a complete app instead of developer time? See our app development cost guide for the UK.
Get matched app developer profiles this week
Tell us the platforms and skills you need. We'll send vetted profiles and a clear monthly price, with no obligation.
Applications our developers have built
A mix of mobile and web applications from our portfolio.
Make My Cab
Rider and driver apps with live booking, payments and trip tracking.
View case study
MediProMax
Pharmacy delivery and telemedicine app connecting patients, doctors and pharmacies.
View case study
EasyRecovery
Web platform and app for lenders and recovery agencies.
View case study
1stOrder
Customer, restaurant and delivery-partner apps for food delivery.
View case study
EduGoMe
A school app connecting parents, teachers, students and administrators.
View case study
ClinicSoft
Hospital management covering patients, appointments, billing and pharmacy.
View case studySecurity, IP and compliance
Your code, data and ideas stay protected from the first conversation to the final release.
A note on IR35: if you hire individual contractors, UK off-payroll working rules can make your business responsible for deciding their employment status. Engaging a company to provide developers under a service contract can simplify this, but confirm your position with your accountant or legal adviser.
- NDA signed before any project details are shared
- Full ownership of code, designs and documentation
- Work in your repositories, app store and cloud accounts
- UK GDPR-aware handling of personal data
- Peer review, automated testing and security scanning
- Access removed promptly when an engagement ends
Why hire application developers through Fulminous Software
Every platform covered
Mobile, web, cross-platform and back-end developers from one partner.
You choose who joins
Interview and test every candidate yourself before they start.
UK-hours management
A London-headquartered company with coordination during UK business hours.
Flexible commitment
Scale your team up or down with monthly notice.
Replacement if needed
If a developer isn't the right fit, we'll arrange a replacement quickly.
Wider team behind you
Designers, QA and DevOps available when your project needs them.
Comparing options? Read freelance app developer vs agency.
FAQs: Hiring application developers in the UK
How do I hire an application developer through Fulminous?
Tell us what kind of application you are building, your tech stack and the skills you need. We send matched, vetted developer profiles, you interview the candidates, and once you choose we handle the NDA, contract and onboarding.
What types of application developers can I hire?
You can hire mobile app developers for iOS and Android, cross-platform developers using Flutter or React Native, web application developers, back-end and API developers, desktop and enterprise application developers, plus designers, QA engineers and DevOps specialists to support them.
How quickly can an application developer start?
Most application developers start within 7 to 14 days of your first call. Timing depends on the skills and seniority you need, how quickly you can interview, and how many developers you are hiring.
How much does it cost to hire an application developer in the UK?
As a guide, UK-based application developers typically cost £60 to £120 an hour, or £7,000 to £12,000 or more a month full time. Hybrid teams with UK management and offshore developers typically cost £25 to £50 an hour, or £3,000 to £6,000 a month. Rates depend on platform, skills, seniority and contract length.
Should I hire native or cross-platform app developers?
Cross-platform developers using Flutter or React Native suit most business apps and let one team build for iPhone and Android. Native iOS and Android developers are better when you need the best performance, advanced device features or platform-specific experiences.
Can hired developers work on an existing application?
Yes. Developers can take over an existing codebase, fix bugs, add features, improve performance and modernise older applications, working within your current processes and tools.
Do I own the code my application developers write?
Yes. We sign an NDA before you share project details, and full ownership of all code, designs and documentation is transferred to you. Developers work in your repositories and accounts.
Should I hire developers or outsource the whole application?
Hire developers if you want to direct the work and build your team's capability. Choose a fully managed project if you want an agreed outcome delivered to a fixed scope. We offer both.
Ready to hire application developers?
Tell us what you're building and the skills you need. We'll send matched developer profiles and a clear monthly price, usually within a few working days.
Latest Blogs And News
Our offshore IT consulting services along with the AI-powered core helps top companies stay competitive, win new markets and increase shareholder value.
