Senior Android and AOSP Developer | SafeToNet · Teeming.ai
SafeToNet
We are award-winning online safety pioneers, creating safer tech for a better world. For over a decade, we've led AI innovation to protect children online. Now, with HarmBlock, we're preventing harm…
We are award-winning online safety pioneers, creating safer tech for a better world. For over a decade, we've led AI innovation to protect children online. Now, with HarmBlock, we're preventing harm…
Product: HarmBlock — on-device AI for blocking/preventing harmful content
Founded: 2012
Employee count: 31
Company Overview
Problem Domain
Child online safety; preventing exposure to explicit and harmful content across devices, apps and platforms.
Founded
2012
Industry
Online safety / Child protection technology
Funding Track Record
Seed- Feb 2016
$3.0M
Series A- Jun 2018
$13.0M
Grant- Feb 2023
£1.8M
Investor Signal
“Mix of grants and private investors including the European Commission and The Safety Tech Challenge Fund; additional private/undisclosed investors referenced in coverage.”
Data and AnalyticsDeepTechInformation TechnologySoftware
-
Fastrak AI
🇺🇸US
Information TechnologySoftware
-
Incode Technologies
🇺🇸US
Security
-
Veriff
🇺🇸US
Security
$192M
About SafeToNet
SafeToNet is a UK-based technology company dedicated to protecting children and young people in the digital world. We build
privacy-first, AI-powered safety solutions
that operate directly on devices to prevent online harm before it happens.
Our products are trusted by families, schools, and organisations, and are designed with a strong emphasis on
child safety, security, transparency, and data minimisation
. We work at the intersection of
Android system internals, machine learning, security, and ethical technology
, solving technically challenging problems with real-world impact.
At SafeToNet, engineers work on deep technical problems and contribute to products that genuinely make the internet safer for children.
About the Role
We are looking for a
Mid-level to Senior Android Developer (7–10 years experience)
to join our fully remote engineering team.
You will work on
complex Android applications and system-level components
focused on real-time content analysis, child safety, and privacy-preserving enforcement. This role involves both
application-level and lower-level Android work
, with opportunities to contribute to architectural decisions and mentor other engineers.
Responsibilities
Design, develop, and maintain
high-performance Android applications
used by families and children
Work on
device-level and system-adjacent Android features
, including background services, accessibility, VPN, device policy, and OS integrations
Required Skills & Experience
Nice to Have (Highly Valued)
What We Offer
Fully
remote-first
working environment
Opportunity to work on
mission-driven products with real social impact
Exposure to
advanced Android internals and challenging technical problems
A collaborative engineering culture with
real influence
Competitive salary based on experience
Why Join SafeToNet?
At SafeToNet, you won’t just be shipping another app - you’ll be building technology that
actively protects children
and helps families navigate the digital world safely. If you enjoy working close to the platform, care deeply about privacy and ethics, and want your work to genuinely matter, this role is for you.
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Collaborate with ML, backend, and security teams to integrate
on-device AI and real-time protection mechanisms
Ensure apps meet
strict privacy, security, and compliance requirements
, particularly around child data
Debug complex issues across a wide range of Android devices and OS versions
Contribute to technical design discussions, code reviews, and architectural improvements
Mentor and support mid-level developers where appropriate
7–10 years of professional Android development experience
Strong proficiency in
Kotlin
(and Java where required)
Deep understanding of the
Android SDK, app lifecycle, threading, and performance optimisation
Experience building
robust background services
, foreground services, and long-running processes
Solid understanding of
Android security
, permissions, sandboxing, and storage models
Experience working with
modern Android architectures
(MVVM, Clean Architecture, modularisation)
Comfortable working in a
remote, asynchronous team environment
Strong problem-solving skills and attention to detail
Experience with
system-level Android apps or AOSP integration
Previous work on
parental control, monitoring, or device management applications
Experience in
child safety, online safety, or safeguarding technologies
Strong understanding of
Android accessibility services, VPNService, Device Policy APIs
Background in
privacy-centric or security-focused applications
Experience with
on-device ML / AI integration
(e.g. TensorFlow Lite, LiteRT, ONNX)
Knowledge of
secure coding practices, encryption, and data minimisation
Familiarity with
Play Store policies
, especially around sensitive permissions
Experience working in
regulated or compliance-heavy environments
(e.g. COPPA, GDPR, children’s data)
