Product Security Engineer- Mobile
Sun King
Product
Kenya
Posted on Oct 29, 2025
Job Location: Tatu City, Kenya
About the role:
The role holder will identify security loopholes in various vendor smartphones and advise on security considerations. You will be providing assistance and testing Sun King devices for security flaws, particularly mobile phones. Physically performing hardware vulnerability reviews of various mobiles, IoT and automotive devices, writing custom Proof-of-Concept code and carrying out internal penetration testing against various products.
About the role:
The role holder will identify security loopholes in various vendor smartphones and advise on security considerations. You will be providing assistance and testing Sun King devices for security flaws, particularly mobile phones. Physically performing hardware vulnerability reviews of various mobiles, IoT and automotive devices, writing custom Proof-of-Concept code and carrying out internal penetration testing against various products.
- Department
- Global Analytics and Technology
- Employment Type
- Permanent - Full Time
- Location
- Kenya
- Workplace type
- Onsite
- Reporting To
- Head of Cyber Security
What you would be expected to do:
- Perform offensive security assessments of hardware, firmware, embedded OS, and payment stacks on Sun King mobile devices.
- Reverse engineer firmware and perform static and dynamic analysis to identify security flaws.
- Identify and exploit vulnerabilities in embedded systems, bootloaders, MDMs, Android kernel, secure boot implementations, and cryptographic mechanisms.
- Build and execute proof-of-concept attacks to demonstrate real-world exploitability and business impact.
- Collaborate with product, hardware, and software engineering teams to define secure development practices and improve product resilience.
- Participate in threat modelling and architecture reviews of new products and features.
- Stay up to date with emerging vulnerabilities, tools, and offensive research relevant to smart phones financing ecosystems.
You might be a strong candidate if you:
- Have fundamental knowledge of Android security, Mobile Device Management, IoT device architectures, and hardware security testing/hacking.
- Possess knowledge of hardware hacking techniques (e.g., JTAG/SWD/UART debugging, side-channel evaluation, fault injection).
- Demonstrate hands on experience with Flash 64, Pandora, Easy JTag, Chimera, CM2 etc
- Are proficient in reverse engineering tools such as Ghidra, IDA Pro, Binary Ninja, and debugging tools like JTAGulator, OpenOCD, or Bus Pirate.
- Demonstrate familiarity with secure boot, TPM/TEE, flash encryption, and other embedded security technologies.
- Show programming and scripting proficiency in Python, C/C++, Bash, or similar languages.
- Are experienced in evaluating and modifying firmware images (binwalk, Firmadyne, QEMU).
- Have solid comprehension of common vulnerabilities (e.g., memory corruption, design flaws, insecure update mechanisms).
- Are exposed to payment/fintech device security and secure device provisioning environment.
What we offer:
- An opportunity to grow as a professional in a dynamic, fast growing, high impact industry;
- The chance to work in an open minded, collaborative culture surrounded by enthusiastic Greenlighters who are driven by the challenge of continuously innovating and growing a smart, sustainable business with profound impact on the world;
- 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 Greenlight Academy.
We place great importance on sustaining a diverse, inclusive work environment.
We believe that diversity (of race, gender, sexual orientation, religion, ethnicity, national origin, personality type, perspective, and all the other fascinating characteristics that make us different) enriches innovation and our competitiveness in the market.
We strive to ensure diverse perspectives inform critical decisions, and we actively work towards ensuring all Greenlighters feel like they belong. We also know that sustaining an inclusive workplace requires conscious effort and is a continuous journey, not an end-state.
Greenlight recruits, employs, trains, compensates and promotes individuals based on experiences and demonstrated job performance, regardless of race, color, religion, sex, marital status, sexual orientation, national origin, HIV/AIDS status, disability, or any other protected characteristic as established by law.
We believe that diversity (of race, gender, sexual orientation, religion, ethnicity, national origin, personality type, perspective, and all the other fascinating characteristics that make us different) enriches innovation and our competitiveness in the market.
We strive to ensure diverse perspectives inform critical decisions, and we actively work towards ensuring all Greenlighters feel like they belong. We also know that sustaining an inclusive workplace requires conscious effort and is a continuous journey, not an end-state.
Greenlight recruits, employs, trains, compensates and promotes individuals based on experiences and demonstrated job performance, regardless of race, color, religion, sex, marital status, sexual orientation, national origin, HIV/AIDS status, disability, or any other protected characteristic as established by law.
About Sun King
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.
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.
