26 cross-platform engineers available · Replace any time

Hire senior
cross-platform app developers
in 14 days.

Senior cross-platform engineers fluent in Capacitor, Ionic, .NET MAUI, Xamarin legacy maintenance, and Kotlin Multiplatform (KMP). 62+ cross-platform specialists in-house who help teams pick the right framework — and ship one codebase to iOS, Android, and web. Top 2% of applicants.

14-day onboarding From discovery to first PR
Replace any time 5-day swap window
100% source code IP Full ownership in MSA
5 frameworks on bench Capacitor · Ionic · MAUI · Xamarin · KMP
Cross-Platform Mobile Engineers
Senior bench · 7+ yr average
Capacitor 6 Ionic Framework 8 Ionic React Ionic Angular Ionic Vue
Custom Rate Available now
Pranav J.
Senior Ionic + Capacitor Eng · 9y
Ionic Capacitor 6 Angular
Custom Rate Now
Sneha L.
MAUI / .NET Lead · 11y
.NET MAUI C# XAML
Custom Rate In 2 weeks
Rishi A.
KMP Specialist · 7y
Kotlin Multiplatform Compose Multiplatform Ktor
Custom Rate In 3 weeks
+ 26 cross-platform engineers available Cross-Platform Mobile Engineers · ready to onboard
Browse all
4.9 · Google
ISO 27001
NDA Day 1
Flexible MSAs
4 time zones across 6 countries
Clutch Top 1%
Our Staff Augmentation

Build with us
like you'd build in-house.

Hire cross-platform developers who join your team, your repo, and your standups — backed by a 62-engineer cross-platform organization that ships single-codebase mobile from Capacitor + Ionic web-tech apps, .NET MAUI for C# teams, KMP for shared business logic, and Xamarin maintenance for enterprises stuck on legacy stacks.

On your team, day 1

Engineers join your Slack, your Jira, your sprint board. No layers, no PM filter — they pair with your cross-platform team like senior in-house hires.

Direct git access

They open PRs straight into your repo. You see every commit, every screen, every test, every release branch.

You manage the work

You set product priorities and sprint goals. We handle hiring, retention, payroll, benefits, upskilling, and laptops.

Engagement Models

Three ways
to hire from us.

Same senior cross-platform bench, different commercial structure. Pick the model that matches your scope — switch any time, mix across teams.

Most popular

Hire a Dedicated Developer

Hourly · Full-time

One senior cross-platform developer joins your team end-to-end. Full control over priorities, workflow, and code reviews.

  • Full-time on your team
  • Direct Slack + git access
  • Replace within 5 business days
  • No long-term commitment
  • Hourly billing, monthly invoicing
Hire Engineers
Fixed price

Turnkey Project

Per project · Scoped & fixed

Sit back while we own scope, design, build, and launch. Fixed price, fixed timeline, ready-to-launch cross-platform app delivered.

  • Discovery → scope → fixed bid
  • Milestone-based invoicing
  • Penalty clauses on miss
  • 30 days post-launch support
  • 3-month warranty included
Hire Engineers
Tech Stack

Hire across every
cross-platform capability.

62+ vetted cross-platform engineers across Capacitor, Ionic, MAUI, Xamarin, and KMP. All in-house. All senior.

 Capacitor & Ionic

Capacitor 6
Ionic Framework 8
Ionic React
Ionic Angular
Ionic Vue
Capacitor plugins (custom)
Stencil web components
Ionic Native

 .NET MAUI

.NET MAUI
MAUI Blazor Hybrid
XAML
MVVM Toolkit
CommunityToolkit.MVVM
MAUI Essentials
Shell navigation
Handlers (platform customization)

 Xamarin (Legacy Maintenance)

Xamarin.Forms
Xamarin.iOS
Xamarin.Android
Xamarin → MAUI migration
Bindings library
Custom renderers
Xamarin Essentials

 Kotlin Multiplatform (KMP)

KMP shared modules
Compose Multiplatform
Ktor client
SQLDelight
Kermit logging
kotlinx.serialization
Native interop (Swift + Kotlin)
Gradle multiplatform

 Native Interop

Capacitor plugin authoring (Swift / Kotlin)
MAUI handlers
KMP cinterop
Xamarin bindings
Platform-specific UI overrides
Push notifications (per platform)
Native ads SDK integration

 Distribution & DX

Fastlane
App Center (legacy)
Visual Studio + Rider
Xcode integration
Capacitor Live Updates
CodePush
TestFlight + Play Internal
CI on Azure DevOps + GitHub Actions
Hiring Process

From "we need a cross-platform dev"
to onboarded — in 2 weeks.

4-step process pulled straight from how we work. 48 hours to first profile. 2 weeks to a cross-platform developer joining your standup.

01
Day 1-2

Requirement Analysis

We begin by understanding your business goals, technical requirements, project scope, and timelines to ensure the right cross-platform development approach for your team.

02
Day 3-5

Choose a Resource

Based on your needs, we shortlist and recommend the most suitable cross-platform developers with relevant experience and skill sets — 3-5 profiles in 48 hours.

03
Day 6-10

Start an Interview

Interview the selected cross-platform developers to assess their technical expertise, communication skills, and project fit before final selection. Live coding, system-design — your call.

04
Day 11-14

Onboarding

Once approved, the developer is onboarded quickly and starts working as part of your team with complete transparency and regular updates. First PR by day 14.

Why Choose WebSenor

10 reasons enterprises pick us
over over marketplaces and agencies.

01

5-step vetting

Resume + technical screen + live framework-specific coding test (Capacitor / MAUI / KMP) + system-design + culture fit. <4% acceptance rate.

02

100% source code authorization

You get complete ownership of clean, well-documented cross-platform source code. Standard MSA assigns IP to you on day 1.

03

Skilled & experienced programmers

Our cross-platform developers help teams pick the right framework, then ship — web-tech (Ionic + Capacitor) for marketing-heavy apps, MAUI for C#/.NET shops, KMP where native UI must stay separate.

04

Excellent communication

Engineers ensure clear communication, timely updates, and seamless collaboration throughout the project lifecycle. Async-first, written-default culture.

05

Replace any time

Not the right fit? Free replacement in 5 business days. No questions asked. Most teams never need it — but it's there.

06

No middlemen

You talk directly to engineers. No account-manager wall, no chinese-whispers PM filtering communication.

07

Save up to 60%

Senior cross-platform developers at India rates — without agency markup, recruiter fee, or freelancer flake. 30-60% cost vs onshore.

08

Time-saving

Time is money. Our cross-platform experts deliver projects effectively and efficiently, with 95% talent retention to avoid mid-project churn.

09

Monthly contracts

30-day notice. No multi-year lock-in. Scale your cross-platform team up or down as your roadmap shifts.

10

Production experience

They've shipped cross-platform apps in App Store + Play Store top charts, migrated Xamarin.Forms apps to MAUI on tight enterprise deadlines, and KMP-shared business logic for fintechs.

WebSenor vs. The Alternatives

Compare your
Cross-Platform hiring options.

How WebSenor stacks against in-house hiring, freelancer marketplaces, and traditional staffing agencies for Cross-Platform roles.

Factor
In-house hire
Freelance marketplace
Time to hire
3-4 months
7-21 days
Senior Cross-Platform talent
Depends
Mostly junior
Vetting
Your process
Self-reported
Replace any time
No, fire + rehire
Re-search
Source code IP
Yours
Read T&Cs
Direct access
Full
Via platform
Contract length
Permanent
Hourly
Capacitor + MAUI + KMP bench
Rare
Sometimes
Sample Profiles

Meet a few of
our our available cross-platform devs.

Anonymized profiles. Real CVs and portfolio links shared after a 30-minute discovery call.

Pranav J.

Senior Ionic + Capacitor Eng · 9y

Authored 4 Capacitor plugins (BLE, NFC, biometrics, printer) for a logistics field app — shipped iOS + Android from one Angular codebase.

Ionic Capacitor 6 Angular TypeScript Custom plugins
IST · Overlaps EU/US
Custom Rate · Now

Sneha L.

MAUI / .NET Lead · 11y

Migrated a 280-screen Xamarin.Forms enterprise app to .NET MAUI in 16 weeks — startup -55%, single codebase to iOS+Android+Windows.

.NET MAUI C# XAML Xamarin → MAUI Azure
IST · Overlaps US
Custom Rate · In 2 weeks

Rishi A.

KMP Specialist · 7y

Set up KMP for a Series-C fintech — 70% shared code across iOS+Android, native UI per platform, single PR per feature.

Kotlin Multiplatform Compose Multiplatform Ktor SQLDelight iOS/Swift interop
IST · Overlaps EU
Custom Rate · In 3 weeks
Outcomes

What teams built
with cross-platform devs from us.

Logistics field-ops startup
OutcomeSingle codebase, BLE printer support, 4.6 rating
StackIonic · Capacitor · Angular · TS

Ionic + Capacitor app with 4 custom plugins

Logistics field-ops startup · Ionic · Capacitor · Angular · TS

Read case study
Enterprise insurance
OutcomeStartup -55%, codebase to iOS+Android+Windows
Stack.NET MAUI · C# · XAML · Azure

Xamarin.Forms → .NET MAUI migration

Enterprise insurance · .NET MAUI · C# · XAML · Azure

Read case study
Series-C fintech
Outcome70% code shared iOS+Android, single PR/feature
StackKMP · Ktor · SQLDelight · Compose

KMP shared business logic

Series-C fintech · KMP · Ktor · SQLDelight · Compose

Read case study
Client Voices

What companies say
about hiring from us.

"
★★★★★

We weren't sure between Ionic, MAUI, and KMP. WebSenor's lead spent two hours mapping our team's skills and app needs, then recommended Capacitor + Ionic. Six months later, we're glad we listened.

CT
CTO, logistics startup
"
★★★★★

Their MAUI lead pulled off a Xamarin migration we'd been afraid of for two years. Done in 16 weeks. Startup time dropped 55%.

ED
Engineering Director, enterprise insurance
"
★★★★★

KMP is hard to staff well — until WebSenor. Their specialist set up the shared module structure, taught my team how to do native UI per platform, and we ship features in single PRs now.

VM
VP Mobile, Series-C fintech
Frequently Asked Questions

Everything you need
to know before hiring.

Which cross-platform framework should I use?
Depends on team and app: Capacitor/Ionic for marketing-driven apps where your team is React/Angular/Vue web. .NET MAUI for C#/.NET shops. KMP when you want shared business logic but platform-native UI. Flutter / React Native for ground-up consumer mobile (we have separate benches for those). We help you decide on the discovery call — not push our preference.
Can you migrate from Xamarin.Forms to .NET MAUI?
Yes. We've done it for 5+ enterprise apps in 2024-25. We do an audit (custom renderers, dependencies, NuGets) first, then phased migration with the legacy app still running.
What does the 14-day SLA actually mean?
From discovery (day 1) to a cross-platform developer shipping their first dual-platform build by day 14.
How does the replacement guarantee work?
5 business days notice, 2-3 replacement profiles within 48 hours.
Do your cross-platform devs write native iOS / Android code when needed?
Yes. For Capacitor plugins they author Swift + Kotlin. For MAUI handlers they ship platform-specific UI. For KMP they write Swift interop directly. Cross-platform never means '100% framework' — natives are part of the job.
How do you handle performance tradeoffs vs native?
We're honest: web-tech (Ionic) is great for content + forms, less so for 60fps animations. MAUI is solid on UI but heavier startup. KMP has zero UI penalty but takes more setup. We build prototypes on tough screens before committing your team to a framework.
What about IP, NDAs, and source code?
100% source code authorization. Standard MSA assigns all IP day 1.
How do you vet cross-platform developers?
5 steps: resume + portfolio, technical screen with our cross-platform lead, live coding test (90 min) in the relevant framework (Capacitor/MAUI/KMP), system-design round (60 min) on framework selection + native interop boundaries, culture-fit + references.
Get Matched in 48 hours

Tell us the role.
We'll send 3-5 profiles.

Share what you're hiring for — role, stack, timezone, when you need them. We'll come back within 48 hours with 3-5 hand-picked Cross-Platform Mobile Engineers, full CVs, case studies, and rate cards.

What you'll get

3-5 matched profiles in 48h
Full CVs + portfolio links
Transparent rate cards
Interview slots within 1 week
5-day trial window
Flexible MSA & NDA templates

Request Cross-Platform Profiles

Free · No commitment · 48-hour response
SOC 2 secure · NDA signed before any IP shared · No spam
The Numbers

62+ cross-platform engineers · 13+ years · 3500+ projects

62+

cross-platform engineers

360+

cross-platform apps shipped

60%

Cost vs onshore

14-day

Time to hire
Free · 48-hour profile turnaround

Hire your cross-platform team
in 2 weeks.

3-5 senior cross-platform developer profiles in your inbox within 48 hours. Free. No commitment. No sales pitch.