Quality Engineer (macOS)

DNSFilter is revolutionizing network security by providing fast, accurate, and reliable threat protection and content filtering. We're a rapidly growing company dedicated to creating a safer internet for businesses and organizations worldwide. Leveraging AI-driven threat intelligence, DNSFilter empowers our customers to proactively block threats before they impact their networks. We foster a collaborative, innovative, and results-oriented culture where every team member contributes to our mission of making the internet safer.

As we continue our product-fueled growth by adding new features and broadening our solution to meet the needs of the global market, it's clear there's a missing piece. That's where you come in!

We are looking for a strong technical Quality Engineer experienced in risk-based, context-driven testing to help us build and evolve our macOS Roaming Client and the broader DNSFilter ecosystem. As a member of our Quality Engineering Team, you will play an integral role in validating complex, scalable network security solutions while collaborating across R&D. Qualified candidates are self-motivated, have deep experience with macOS system-level testing, and have thrived in fast-paced, hyper-growth SaaS organizations.

This is a full-time remote role working with globally distributed teams, open to candidates in the United States or Canada who can work mostly ET hours.

We recognize that people come with a wealth of experience and talent beyond just the technical requirements of a job. If you feel like this job is for you, please apply. We believe diversity of experience and skills, including transferable skills, combined with passion, is a key to innovation and excellence; therefore, we encourage people from all backgrounds to apply to our positions!

At DNSFilter, You Will: 

• Holistic Risk Discovery: Study the product and integration points to identify risks across the full stack - from the macOS binary to the SaaS dashboard.
• Technical macOS & MDM Testing: Own the lifecycle of the macOS agent, including complex install, uninstall, and over-install scenarios including MDM profile creation and deployment testing (Mosyle, Jamf, Kandji).
• Network & DNS Validation: Execute tests that reach “beyond the requirements,” specifically around Captive Portals, DNS interception (DoH/DoT), and network transitions (VPN/Wi-Fi/LTE).
• SaaS & API Correlation: Verify that local client behavior - telemetry, blocks, and heartbeats - synchronizes perfectly with our SaaS dashboards and backend APIs.
• Deep-Dive Troubleshooting: Triage and debug complex issues using macOS logs, tcpdump, and API interception tools (Postman/Proxyman) to isolate the root cause.
• Environment & Data Management: Build and maintain complex test environments and data sets to simulate diverse global networking conditions and location-based testing.
• Tooling for Impact: Design and implement tools/automation where they provide tangible value to productivity, environment maintenance, or deep testing.
• Technical Communication: Speak knowledgeably about testing status and risk, delivering concise, actionable bug reports that bridge the gap between OS logs and business logic. 

To Qualify for the Role, You Have:

• 4+ years of software testing experience with a focus on risk-based, context-driven methodologies.
• Hands-on experience testing and debugging locally installed macOS applications, including .pkg/.app lifecycles and Unified Logging.
• Proficiency with MDM platforms (Mosyle, Jamf, or Kandji) for profile creation, deployment testing, and managing System Extensions.
• Strong understanding of network protocols and DNS (DoH, DoT, UDP/53) using tools like tcpdump, dig, and scutil.
• Experience validating SaaS dashboards and API integrity using interception tools like Postman or Proxyman.
• Experience with JavaScript and Playwright, plus the ability to create scripts (Shell, Python, or Swift) to automate environment tasks.
• Strong knowledge of the SDLC and the ability to identify product risks holistically across a distributed stack.
• Proven experience working autonomously in a fast-paced, hyper-growth SaaS startup or scale-up environment.
• Experience working effectively with remote, globally distributed teams and availability for ET working hours.
• Excellent technical communication skills for translating complex system logs into concise, actionable bug reports.

Bonus points for: 

• Experience with AI Augmented Testing
• Deep knowledge of macOS internals and system-level debugging.
• Experience implementing DNS filtering, proxying, or network interception technologies.
• Understanding of endpoint protection, security auditing, or privacy compliance standards.
• Experience testing 3rd party integrations
• Rapid Software Testing (RST)
• Close proximity to our Tampa, FL office

We Offer:

• Pathway to promotion to additional organizational positions and responsibilities based upon results and performance, not just time in the chair.  You help us grow, and we will help you grow.
• Passionate and intelligent colleagues who work hard and have a good time doing it
• Paid company-wide week off at the end of each year
• Flexible Vacation Policy
• Awesome company swag
• Full medical, dental, and vision benefits for US, UK, and Canada-based employees
• Full short-term disability and life benefits; available long-term disability
• Retirement savings account options with vested company matching for qualifying employees
• In-person annual gatherings. Last time we all spent a week on a beach in the Dominican Republic!

DNSFilter is a pay-for-performance organization, which means there is an opportunity to advance your compensation based on performance over time. The hiring base pay is dependent on several factors, including level, function, training, transferable skills, work experience, business needs, and geographic location. As a hybrid company, our compensation reflects the cost of labor across several U.S. and global geographic markets. We pay differently based on those defined markets. Our Talent Team can share more about the specific salary range for the job location during the hiring process.

DNSFilter participates in the E-Verify program.

At DNSFilter, we utilize sophisticated software and tools to identify and eliminate Deepfake candidates. This approach helps us maintain the integrity of our hiring process, ensuring that we select the most qualified and genuine individuals to join our team.