Mobile App Engineer

Voop Inc.; Greater London; Hybrid; GBP 60,000 - GBP 80,000; Full time

Job summary

A pioneering mobile safety platform is seeking a Mobile App Engineer to develop and maintain their iOS and Android applications. This role offers the opportunity to work on innovative products aimed at online safety for children. Candidates should have strong experience with Swift, Kotlin Multiplatform, and a background in mobile network architecture. Join a dynamic team dedicated to making a real social impact through technology.

Qualifications

• Several years of experience as a senior engineer or technical lead.
• Experience in building quality products in lean teams.
• Understanding of mobile network architecture or MDM frameworks.
• Passion for online safety, child protection, or social impact tech.

Responsibilities

• Develop and maintain Voop's mobile apps for iOS & Android.
• Design and implement frontend experiences on mobile.
• Contribute to backend services powering the Voop network.
• Collaborate with the CTO and product team on scalability and security.
• Engage with end-users to ensure technology delivers real-world impact.

Skills

Swift & Kotlin Multiplatform

Mobile network architecture

eSIM management

Voice/SMS platforms (e.g. Twilio)

AI-driven safeguarding tools

Tools

AWS

Postgres

MDM frameworks

Job description

Awareness has never been higher about the damage smartphones can do to young people, yet almost no one is fixing it.

Voop is building the world’s first safe mobile platform — a new kind of network that replaces traditional telcos and installs intelligent protection on any smartphone.

By combining network-level controls, device-integrated safeguarding software, and AI-powered risk detection, Voop gives parents, carers, schools, and governments the ability to protect without over-restricting — all on the devices that children and adults already use and love.

Our first product, Voop for Care, is live with leading care providers, protecting thousands of vulnerable children in the UK. Next, we’re expanding into schools and consumer markets to make digital safety the default, not the exception.

Backed by leading global investors and built by a world-class team of engineers, designers, and safeguarding experts, Voop is tackling one of the defining challenges of our time: creating a safer digital future at massive scale.

Why Voop

Mission that matters: Build technology that directly protects children and saves lives.

Massive opportunity: A $50B+ global market for safe connectivity, with active customers and real revenue.
World-class team: Alumni from Google, Accenture, Vodafone, Barnardo’s, and law enforcement.

Momentum: Thousands of users onboarding, millions more in the pipeline.

Top-tier backing: Supported by global funds committed to fixing smartphones for good.

The Opportunity

As a Mobile App Engineer at Voop, you’ll play a pivotal role in developing and scaling our platform across web and mobile. You’ll work closely with Nick Pasha-Gubbins (Co-Founder & CTO) on:

Build-out of modern web applications and mobile apps for iOS and Android using Swift & Kotlin Multiplatform.

Product development across Voop for Care, Voop for Schools, and Voop for Parents

Deployment, optimisation, and real-world testing during pilots and large-scale rollouts.

From day one, you’ll contribute to production code, take radical ownership and shape product direction, and see the direct impact of your work through user outcomes results.

This is a great time to join an early stage company with strong market traction, backing and momentum to go big.

Key Responsibilities

Develop and maintain Voop’s mobile apps, including iOS & Android.

Design and implement frontend experiences on mobile (iOS / Kotlin Multiplatform).

Contribute to backend services (MDM, Hono, Postgres, AWS, Kamailio) powering the Voop network.

Work on systems for network management, device control (MDM), and AI-driven safeguarding tools.

Collaborate with the CTO and product team on design, architecture, scalability, and security.

Ship fast, iterate quickly, and deliver measurable value to real users.

Engage with end-users to understand their challenges and ensure our technology delivers real-world impact.

About you

You’re pragmatic, fast-moving, and technology-agnostic, focused on solving the right problems well.

You yearn for product ownership, and can collaboratively steward full features from idea to delivery.

You have several years of experience as a senior engineer or technical lead building quality products in lean teams.

You’re opinionated but collaborative, bringing scars from what hasn’t worked and empathy for working fast with others.

You care about the craft: clean architecture, reliability, and great user experience.

You’re driven by impact: building tech that matters, not just code that works.

Experience with eSIM management

Experience with voice/SMS platforms (e.g. Twilio, SIP Trunks).

Understanding of mobile network architecture or MDM frameworks.

Passion for online safety, child protection, or social impact tech.