01
MVP mobile apps
Launch a polished Kotlin mobile MVP with onboarding, auth, payments, analytics, and app-store readiness.
Hire Kotlin Developer - UK availability
Hire Kotlin Developers in the UK.
Hire senior Kotlin developers for smooth app experiences, reliable releases, and mobile products ready for real users. Get a vetted engineer or managed delivery team for United Kingdom projects in 48 hours, with daily written updates, weekly demos, and clear ownership from discovery to launch.
Senior production engineers48-hour ramp-upUK-focused deliveryDaily written updatesWeekly demosCode review included
60+
Kotlin products shipped
4.9★
Average client rating
48h
Developer ramp-up time
98%
On-time delivery rate
What you can hire us for
Kotlin developers for
real product work.
Bring in a Kotlin specialist when you need practical delivery, cleaner architecture, and measurable progress without waiting months to recruit.
Typical deliverables
Mobile architecture
Responsive app screens
API integration
Push notifications
Crash reporting
Store release support
Common stack fit
React NativeFlutterSwiftKotlinFirebaseFastlane
02
Cross-platform delivery
Ship iOS and Android features from one roadmap while protecting native user experience.
03
App rebuilds
Replace slow or unstable legacy apps with a maintainable Kotlin architecture.
04
Backend integration
Connect your app to APIs, push notifications, subscriptions, maps, chat, and file uploads.
05
Release management
Set up build pipelines, beta testing, crash monitoring, and staged app-store releases.
06
Product iteration
Add senior Kotlin developers for roadmap features, bug fixes, and retention improvements.
Free quote in 24 hours
Tell us about
your project.
We'll handle the rest.
No pushy sales calls, no spam. Just an honest assessment and a clear quote — back in your inbox within one business day.
Reply within 1 business day
NDA available before any call
No obligation, no spam
Client testimonials
Hear from teams that
hired our developers.
“
★★★★★
"Quick, professional, always going above and beyond. Our Kotlin dashboard shipped two weeks ahead of schedule and the code quality was exceptional."
AB
Adam Bishop
Founder & CEO, StakeClash
“
★★★★★
"Techsleight built our admissions platform end-to-end — content, SEO, dashboards. Enquiries from international students grew steadily after launch."
ET
Eduglobetech Team
Founder, Eduglobetech
★★★★★
"They picked up the codebase faster than any agency we've worked with. PRs were small, well-tested and easy to review."
Sara K. · Engineering Manager · Fintech
★★★★★
"Honest about timelines and scope. When something was going to take longer, they told us early and showed why."
Rohan B. · Founder · B2B SaaS
★★★★★
"Our PageSpeed scores went from low-60s to consistent 90s. The site finally feels as fast as the rest of the product."
Elena V. · Head of Marketing · D2C
★★★★★
"Communication is on point. Standups are short, written updates are useful, and there's no chasing on what was shipped."
Tom H. · Product Lead · Marketplace
★★★★★
"They picked up the codebase faster than any agency we've worked with. PRs were small, well-tested and easy to review."
Sara K. · Engineering Manager · Fintech
★★★★★
"Honest about timelines and scope. When something was going to take longer, they told us early and showed why."
Rohan B. · Founder · B2B SaaS
★★★★★
"Our PageSpeed scores went from low-60s to consistent 90s. The site finally feels as fast as the rest of the product."
Elena V. · Head of Marketing · D2C
★★★★★
"Communication is on point. Standups are short, written updates are useful, and there's no chasing on what was shipped."
Tom H. · Product Lead · Marketplace
Why teams choose us
What makes us
different.
We've heard every agency promise. Here's what we actually deliver — and how we hold ourselves accountable to it.
On-time delivery
Clear timeline before we start. 98% of our projects ship on or before the agreed date.
Quality work, every time
Senior engineers, code review on every PR, real testing — no shortcuts, no half-done features.
Daily written updates
You get visibility every day. No more wondering what's happening with your project.
Weekly sync-up calls
30-minute call every week to review progress, demo what's built, and re-prioritise if needed.
Agile development
Priorities change — and we adapt. New requirement mid-sprint? We re-plan with you, not around you.
No hidden charges
Flat rates agreed upfront. No surprise invoices, no scope-creep games, no support fees added later.
Senior team only
Every engineer has 5+ years of production experience. No juniors hiding in your bill.
ISO 27001 aligned
GDPR-compliant by default. NDA before any discovery call. Your IP stays yours.
Why Kotlin
Kotlin done right —
production-ready.
Our Kotlin engineers ship clean, tested code with observability, CI/CD, and performance baked in from day one.
Concise Syntax
Kotlin offers a concise and expressive syntax, reducing boilerplate code and enhancing readability.
Interoperability with Java
Kotlin seamlessly interoperates with existing Java code, allowing gradual adoption and integration.
Null Safety
Kotlin incorporates built-in null safety features to prevent null pointer exceptions and improve code robustness.
Smart Casts
Kotlin's smart casting feature simplifies type checking and casting, enhancing code conciseness and safety.
Coroutines
Kotlin introduces coroutines for efficient and asynchronous programming, simplifying complex concurrent tasks.
Extension Functions
Kotlin supports extension functions, allowing developers to augment existing classes without modifying their code.
Our engineers
What our Kotlin developers
bring to your team.
Vetted, senior, US-focused - every Kotlin engineer is hand-picked for production-grade delivery.
01
Kotlin Proficiency
Expertise in using Kotlin for developing scalable and maintainable applications.
02
Java Interoperability
Skills in seamlessly integrating Kotlin with existing Java codebases.
03
Null Safety Implementation
Mastery of implementing null safety features to enhance code reliability.
04
Coroutines Usage
Proficient in leveraging Kotlin coroutines for efficient and asynchronous programming.
05
Smart Casts Implementation
Ability to utilize smart casts to simplify type checking and casting operations.
06
Extension Functions
Experience in creating and utilizing Kotlin extension functions for code modularity.
Delivery process
How we get your
Kotlin developer productive.
The goal is not just to introduce a developer. It is to make the first week useful, reduce onboarding drag, and give your team enough context to trust the work.
1
Discovery and fit check
We review your Kotlin goals, current stack, deadlines, risks, and success metrics before suggesting an engagement model.
2
Shortlist in 24 hours
You get a clear Kotlin developer profile, relevant experience, availability, and estimated weekly capacity.
3
Kickoff within 48 hours
We agree priorities, access, communication rhythm, delivery milestones, and code review expectations.
4
Ship with weekly demos
Every week you see working Kotlin progress, blockers, next steps, and measurable delivery against the plan.
Questions we expect you to ask.
Good hiring decisions come from evidence. These are the kinds of questions we answer during discovery and developer matching.
?
What production Kotlin projects have you shipped that are similar to ours?
?
How do you handle testing, code review, and release rollback?
?
Which Kotlin performance problems have you solved before?
?
How will you communicate blockers and progress during the first week?
?
What security, data privacy, and access controls should we set up first?
?
What would you improve in our current architecture after a quick audit?
Pricing
Kotlin developer rates -
transparent models.
Two ways to hire Kotlin developers - pick what fits your stage. No hidden fees, no surprise invoices.
Hourly Kotlin developer
From £65/hr
Backlog work, fixes, integrations, and flexible sprint support
Weekly billing, daily written updates, code review, and no long-term lock-in.
- Dedicated developer hours
- Pay only for time used
- UI fixes and improvements
- Performance optimisation
- Weekly progress updates
- Cancel or scale anytime
Dedicated Kotlin developer
Most PopularFrom £4,800/month
Ongoing delivery, product teams, and roadmap acceleration
A named engineer embedded into your workflow with weekly demos and delivery planning.
- Complete planning & development
- UI/UX implementation
- Technical SEO setup
- Fully responsive design
- Performance optimisation
- Deployment + post-launch support
Need something else? We also offer dedicated team and retainer engagements. Talk to us →
Hiring comparison
Compare ways to hire
Kotlin talent.
You can hire freelancers, build in-house, or use a general agency. Here is how our model differs when speed, accountability, and code quality matter.
| Criteria | Techsleight Labs | Freelancer | General agency | In-house hiring |
|---|---|---|---|---|
| Start time | 48-hour ramp-up | Varies by availability | Often 1-3 weeks | 4-10 weeks |
| Kotlin expertise | Vetted senior engineers | Depends on individual | Mixed seniority | Depends on pipeline |
| Delivery visibility | Daily updates + weekly demos | Often informal | Account-manager led | Internal setup needed |
| Quality control | Code review, tests, QA, handover | Usually self-managed | Process varies | You build the process |
FAQs
Hiring Kotlin developers -
answered.
Can't find what you're looking for? We're happy to answer any question.
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