Full Stack Engineer, UK

**Voop is building the global child-safe phone network — protecting millions of children and adults from digital harm.**

**About Voop**

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 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 **Fullstack 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:

• Architectural decisions for the core Voop platform.
• Feature development across **Voop for Care , Voop for Schools , and Voop for Parents**.
• Frontend build-out of modern web applications and **mobile apps for iOS and Android** using React and Kotlin Multiplatform.
• Deployment, optimisation, and real-world testing during pilots and large-scale rollouts.

From day one, you’ll contribute to production code, shape product direction, and see the direct impact of your work through user outcomes and safeguarding 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 full stack platform** , including real-time web apps, mobile apps, and backend services.
• Design and implement **frontend experiences** across web and mobile (React / React Native / Kotlin Multiplatform).
• Build and optimise backend services (Hono, Postgres, AWS, Kamailio) powering the Voop network.
• Work on systems for **mobile network management , device control (MDM) , and AI-driven safeguarding tools**.
• Collaborate with the CTO and engineering team on 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.

**Current stack:** Typescript, React / React Native, Kotlin Multiplatform, Hono, Postgres, Pulumi/SST, Docker, AWS, Kamailio.

**About You**

• You’re pragmatic, fast-moving, and technology-agnostic, focused on solving the right problems well.
• 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 take ownership from frontend to backend and DevOps, seeing features through end-to-end.
• You’re driven by impact: building tech that matters, not just code that works.

**Bonus Points**

• Experience with **voice/SMS platforms** (e.g. Twilio, SIP Trunks).
• Understanding of **mobile network architecture or MDM frameworks**.
• Strong knowledge of **networking (Layer 3+)** or secure communications.
• Passion for **online safety , child protection , or social impact tech**.