Senior Software Engineer

Company Overview

TENEX is an AI-native, automation-first, built-for-scale Managed Detection and Response (MDR) provider. We are a force multiplier for defenders, helping organizations enhance their cybersecurity posture through advanced threat detection, rapid response, and continuous protection. Our team is composed of industry experts with deep experience in cybersecurity, automation, and AI-driven solutions. We’re a fast growing startup backed by industry experts and top tier investor Andreessen Horowitz.

As an early employee, you’ll play a meaningful role in defining and building our culture. Get in on the ground floor. We’re a small but well-funded team that just raised a substantial round – joining now comes with limited risk and unlimited upside. We are rapidly growing and seeking top talent to join our mission of revolutionizing the cybersecurity landscape.

We are seeking a Senior Software Engineer to join our core engineering team. You will take ownership of major product and infrastructure initiatives, working across the stack to build scalable, reliable, and secure systems. In this role, you’ll balance being a strong individual contributor with providing technical guidance to peers, ensuring high standards in code quality, design, and execution.

You’ll collaborate closely with product and design teams, making key technical decisions and helping define how our platform evolves. This is an opportunity to work on challenging engineering problems in security, AI, and distributed systems, while growing into a leadership position as the company scales.

Location:
This role will require onsite in our Sarasota, FL office.

Culture is one of the most important things —dive into our culture deck ex.ai to see how we live it every day, with a deep emphasis on the collaboration and community that only in‑person work delivers.

This role is for those already in Sarasota, Florida (outside Tampa), or ready to relocate / commute here, where bold innovators ignite cybersecurity revolutions. Escape the overly inflated cost of living and sky‑high tax burdens of other places with our incredibly aggressive relocation packages, designed to make the move for you and your family seamless, lucrative, and life‑changing—think zero state income tax unlocking your full earning potential!

Join us in this sun‑soaked paradise, embracing unparalleled personal freedom, a pro‑business powerhouse climate, year‑round amazing weather, and a very pro‑family culture headlined by the nearby master‑planned utopia of Lakewood Ranch, boasting top‑tier amenities, schools, and community vibes that fuel work‑life mastery.

• Design, develop, and deploy scalable backend services and APIs.
• Build and maintain intuitive and performant frontend applications.
• Take ownership of projects end‑to‑end, from architecture through deployment and monitoring.
• Collaborate with product, design, and other engineers to define and implement new features.
• Write clean, maintainable, and testable code.
• Participate in design reviews and code reviews, raising the bar for engineering quality.
• Troubleshoot complex issues across the stack and ensure system reliability.
• Contribute to improving engineering processes, tools, and team practices.
• Stay current with emerging technologies and bring new ideas to the team.

Required:

• 5+ years of professional software engineering experience.
• Strong understanding of software engineering principles and best practices.
• Proficiency in at least one backend language such as Go, Python, or equivalent.
• Experience with at least one modern frontend framework (React, Next.js, Type Script, or similar).
• Strong experience with relational databases (Postgre
  
  SQL, MySQL, or equivalent).
• Familiarity with cloud platforms such as GCP or AWS.
• Proven ability to take ownership of complex projects and deliver them end‑to‑end.
• Excellent problem‑solving, communication, and collaboration skills.

Desired (While experience in all is not required, any of the following would be a plus):

• Experience with containerization technologies like Docker and orchestration tools like Kubernetes.
• Experience with CI/CD pipelines.
• Exposure…