About Zscaler Serving thousands of enterprise customers around the world including 45% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler.   Our Engineering team built the world's largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy. We are looking for a Staff Software Development Engineer to our Shared Platform Services team. Reporting to the Sr. Manager Software Engineering, you'll be responsible for:

Contributing, Leading and Expanding automation coverage and infrastructure to improve the quality and efficiency of testing Leading and contributing to the functional, system and automation testing of various features and solutions of the Zscaler Defining cloud deployment procedures and monitors/alerts for the features and work with the cloud deployment team for the implementation

What We're Looking for (Minimum Qualifications)

4-7 years of experience in Quality Domain  - speciality in a networking and security environment preferred Well versed with testing an application hosted on cloud at scale is a prerequisite - should have working knowledge and experience of web applications hosted on cloud Strong networking skills on all the layers and well versed with TCP, UDP, ICMP protocols and Security protocols likeTCP/IP, IPv4/IPv6, HTTP/HTTPS, SSL/TLS Expertise in Scripting Languages like Python, TCL, Expect, etc In-depth knowledge of linux/Mac and windows OS

What Will Make You Stand Out (Preferred Qualifications)

Experience setting testbeds in a Virtualization environment is desirable Knowledge of Active Directory, VPN clients is a plus

LI-HYBRID

LI-GL2At Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Apply Now:

About Zscaler Serving thousands of enterprise customers around the world including 45% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. Our Engineering team built the world’s largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 65 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy. We're looking for an experienced Principal Software Engineer to join our Endpoint Engineering team. This high-impact role will shape the future of mobile security services, affecting millions of users globally.  Reporting to the Sr. Manager, Software Development Engineering, you will be responsible for:

Developing Windows Device Drivers primarily Network Filter drivers and Windows Filtering Platform drivers to intercept network traffic Improving the code quality and to build solid, testable, and well-documented features Making significant contributions to the design and implementation of major development projects, and working closely with our product managers and other teams to implement customer-impacting features Collaborating with internal Zscaler teams as the domain expert for Client platform and help resolve customer deployment issues

What We're Looking for (Minimum Qualifications) 

10+ years of software engineering experience with expertise in lower-level languages like C and C++, alongside in-depth knowledge of Windows internals, kernel-mode programming, and network protocols Proficient in low-level Windows driver development, particularly network drivers, with strong debugging skills for network-related problems Comprehensive understanding of L2/L3 networking protocols and services, including DNS, DHCP, HTTP, TCP/IP, and SSL/TLS Skilled at writing high-quality, well-documented code with low complexity and excellent programming practices Bachelor’s degree in computer science or a related field

What Will Make You Stand Out (Preferred Qualifications)

Additional experience in macOS, Android, iOS or Linux Mobile device Management (MDM) and Enterprise Mobility Management (EMM)

LI-JM1

LI-HybridZscaler’s salary ranges are benchmarked and are determined by role and level. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations and could be higher or lower based on a multitude of factors, including job-related skills, experience, and relevant education or training.

The base salary range listed for this full-time position excludes commission/ bonus/ equity (if applicable) + benefits.Base Pay Range$182,000 - $260,000 USDAt Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure. Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Apply Now:

Blockstream was founded in 2014 by Dr. Adam Back and a group of fellow cryptographers and engineers passionate about Bitcoin and its potential to change the future of finance. Focusing on building fundamental Bitcoin infrastructure, Blockstream quickly grew into one of the leading technology power houses of the industry. At Blockstream, we’re building solutions on Bitcoin that will disrupt the existing financial system. We imagine a world where individuals and businesses can easily access a global, permissionless system to secure their money, use it every day, and invest it or put it to work. In pursuit of our expansive vision, we’ve built a full stack of innovative products on top of the Bitcoin protocol, from layer-2 projects like Liquid and Core Lightning, to end-user software and hardware wallets like Green and Jade. Our brand stands for innovation in the Bitcoin community, and we’re growing our team to accelerate the future. We are seeking an experienced Embedded C Developer to help build and maintain the firmware for a Bitcoin hardware wallet. You’ll work on a security-critical embedded platform, integrating cryptographic functionality with low-level drivers and secure communication interfaces.What You’ll Be Doing (Responsibilities):

Develop, test, and maintain firmware for a Bitcoin hardware wallet using C on embedded systems. Work with low-level hardware interfaces: I2C, SPI, UART/Serial, DMA, and BLE, USB Host/Guest. Implement and optimize secure communication protocols and key management. As applicable, develop for and collaborate with the testing team to ensure the device works reliably over BLE and USB serial on Windows, macOS, Linux, Android, and iOS. Participate in design and security reviews of firmware components. Keep dependencies and submodules up to date and compatible. Work closely with Bitcoin protocol engineers to ensure accurate, secure implementation of core functionality.

What We Look For In You (Required Qualifications):

5+ years of C development experience, including direct interaction with memory and registers. 5+ years of experience on embedded systems (bare metal or RTOS). Strong understanding of embedded communication protocols (I2C, SPI, Serial). Experience writing or debugging BLE integrations. Experience developing and testing over serial and BLE interfaces across desktop and mobile platforms. Experience with low level/embedded GUI development. Experience with multithreading/thread safety/locking

Nice To Haves (Preferred Qualifications):

Experience with esp-idf on the ESP32 series platform. Experience in Bitcoin protocol development or applications. Familiarity with Liquid/Elements sidechains. Security background: familiarity with cryptography (DH, symmetric/asymmetric encryption, digital signatures, etc), HSMs, secure key storage, and threat models. Experience working with DMA-driven data pipelines. Contributions to Bitcoin Core, Elements, or similar open-source projects.

Apply Now: