Senior Software Engineer - REMOTE

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. Backed by leading investors, we are rapidly growing and seeking top talent to join our mission of revolutionizing the AI-Native MDR landscape.

We're a fast growing startup backed by industry experts and top tier investors led by Crosspoint Capital Partners and also backed by Shield Capital, DTCP (formerly Deutsche Telekom Capital Partners), Deepwork Capital, and the Florida Opportunity Fund. Seed round led by Andreessen Horowitz (a16z). 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. Culture is one of the most important things  (Use the "Apply for this Job" box below)..AI—explore our culture deck ex.ai  to witness how we embody it, prioritizing the irreplaceable collaboration and community of in-person work.

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. For candidates who embody the rare "10x of 10x" talent, we offer the flexibility of fully remote work. If you are an exceptional, unrivaled force in this role and prefer not to relocate at this time, we encourage you to apply for this remote-first position.

Please be aware that the competition for these remote roles is exceptionally fierce, and the standards for selection are significantly higher.

• 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.

• 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 (PostgreSQL, 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.