Job Information

Department Name

Cedar Hill Capital Portfolio Company

Industry

Technology

Work Experience

3-6 years

City

Gurgaon

State/Province

Haryana

Zip/Postal Code

122016
Job Description

About the company

Sign3 is an AI-first customer intelligence platform powering fraud prevention, risk scoring, and smarter onboarding decisions for leading FinTechs, banks, and digital businesses. Our flagship SDK and APIs analyze device, behavioral, and digital footprint signals to help clients detect synthetic identities, money mule accounts, and other fraud vectors — in real time. We work with top-tier players across credit cards, lending, gaming, and neo-banking, helping them unlock trusted growth at scale. Our systems process millions of risk events per day, with millisecond-level performance and precision. At Sign3, you'll get to build in a fast-paced, impact-focused environment alongside a lean, high-ownership team.

Role Overview

You will be working on the security of the Sign3 mobile SDKs — Android primarily, with iOS exposure over time.



Your focus is to build the anti-tampering, anti-hooking, anti-debugging, and integrity primitives that ship inside our SDKs to millions of end-user devices, and to help us stay ahead of the attackers who actively try to bypass them in production.

What You'll Do
- Implement and ship detection modules in Kotlin and native C/C++ — anti-Frida, anti-Xposed/LSPosed, anti-Magisk/Zygisk, anti-debugging, anti-emulator, repackaging and integrity checks, and hardware-backed attestation flows.
- Help build and maintain our adversary-simulation test suite — Frida scripts, custom Xposed modules, repackaged APKs — and keep it running against every SDK release in CI.
- Reproduce customer-reported bypasses on rooted devices; triage with senior engineers, fix, and add a regression test.
- Contribute to threat modeling and security architecture reviews for current SDK features and signals. Partner with the risk/ML team so detections produce sig

📌 Mobile Security Engineer (Gurugram)
🏢 Cedar Management Consulting
📍 Gurugram