Product Security Engineer

Job Location: Remote

About the role:

We're looking for a Security Engineer to join our Cyber Security Team, which investigates hacking attempts on Sun King devices and helps strengthen digital and financial inclusion for our customers.

As an ethical hacker, your mission is to identify security loopholes in vendor smartphones and advise on mitigation. You'll test Sun King devices, especially mobile phones, for vulnerabilities, perform hardware reviews across mobile, IoT, and automotive devices, write custom Proof-of-Concept code, and conduct internal penetration testing.

• Perform offensive security assessments of hardware, firmware, embedded OS, and payment stacks.
• Reverse engineer firmware and conduct static/dynamic analysis to uncover flaws.
• Identify and exploit vulnerabilities in bootloaders, MDMs, Android kernels, secure boot, and cryptographic mechanisms.
• Build and execute PoC attacks to demonstrate exploitability and impact.
• Collaborate with engineering teams to define secure development practices.
• Participate in threat modeling and architecture reviews.
• Stay updated on emerging vulnerabilities, tools, and offensive research in smartphone financing ecosystems

• Solid understanding of Android security, MDM, IoT architectures, and hardware testing/hacking.
• Experience with JTAG/SWD/UART debugging, side-channel analysis, and fault injection.
• Hands-on with Flash 64, Pandora, Easy JTag, Chimera, and CM2.
• Proficiency in Ghidra, IDA Pro, Binary Ninja, and debugging tools like JTAGulator, OpenOCD, and Bus Pirate.
• Experience with firmware analysis tools (Binwalk, Firmadyne, and QEMU).
• Familiarity with secure boot, TPM/TEE, flash encryption, and embedded security tech.
• Programming/scripting skills in Python, C/C++, and Bash.
• Understanding of vulnerabilities like memory corruption, logic flaws, and insecure updates.
• Exposure to payment/fintech device security and secure provisioning environments.

• Professional growth in a dynamic, rapidly expanding, high-social-impact industry
• An open-minded, collaborative culture made up of enthusiastic colleagues who are driven by the challenge of innovation towards profound impact on people and the planet.
• A truly multicultural experience: you will have the chance to work with and learn from people from different geographies, nationalities, and backgrounds.
• Structured, tailored learning and development programs that help you become a better leader, manager, and professional through the Sun King Center for Leadership.

Sun King is the world's leading off-grid solar energy company, combining cutting-edge product design, fintech, and field operations to deliver energy access for the 1.8 billion people who live without an affordable and reliable electric-grid connection. Sun King has connected more than 20 million homes to solar power across Africa and Asia, adding over 200,000 homes each month.

Sun King makes solar products affordable to low-income households and businesses via 'pay-as-you-go' purchase financing. Sun King installs solar after customers pay a small deposit. Customers then make small, manageable payments of as little as US $0.11 a day via mobile money or cash.

Instead of paying for expensive, polluting, and health-damaging kerosene for lighting or diesel for power, customers unlock savings through accessing solar power and after one to two years of payments, customers own their solar equipment outright. To date, our Sun King solar products have saved customers more than $4 billion cumulatively.

Sun King collects payments digitally through mobile money systems and its 28,000 field agents — over 650,000 payments each day. Embedded electronics inside each Sun King device regulate usage based on payments, similar to the operation of a pre-paid mobile or electricity meter.

From cost-effective solar systems that provide home lighting and phone charging to robust solar inverters that can power high-energy appliances such as laptops, computers, refrigerators, and more, effectively acting as a full stand-in for grid power, Sun King's products cater to a wide range of income segments and energy needs. Leveraging its proven distribution network and brand, Sun King is expanding its range of products and services to encompass clean cooking, electric mobility, entertainment, and more, aiming to address the needs of our underserved customers.

Sun King employs 2,800 full-time staff in 12 countries, with specialties spanning product design, data science, logistics, customer service, sales, software, operations, and more — all with a passion to serve off-grid families.

Sun King is committed to gender diversity in the workplace. Women represent 44% of Sun King's workforce.