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Senior Software Engineer – Semantic Layer and AI Interfaces

Nucleus Security is an enterprise leader in vulnerability and exposure management, providing a platform that unifies security data to help organizations prioritize and mitigate risks faster.

Nucleus Security

Employee count: 51-200

Salary: 135k-165k USD

United States only

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Senior Software Engineer – Semantic Layer and AI Interfaces
Are you looking for more in life than just building another web app? Does upending cyber security resonate with you? We're a rapidly expanding cybersecurity company revolutionizing vulnerability management for organizations of all sizes. For our customers, vulnerability management has always been a game of catch-up, with limited asset coverage and manual processes. Nucleus' primary mission is to create a fast, scalable platform that not only addresses these challenges but also makes vulnerability management simple, fun, and effortless. Currently, we're looking for a passionate Senior Software Engineer to join our growing team of engineers.

What You Will Do:
  • Own the end-to-end lifecycle of AI-driven features—from prototyping and experimentation to production deployment and customer delivery
  • Design, build, and evolve our semantic data layer to enable scalable, high-quality AI and analytics use cases
  • Collaborate with engineering, product, and data teams to translate ambiguous requirements into robust technical solutions
  • Diagnose, triage, and resolve production issues quickly, ensuring reliability and continuous improvement of deployed systems
The following skills and experience are key to succeeding in this role:
  • Strong background in data analytics, data science, and/or data warehousing.
  • Deep expertise in SQL, including performance optimization and complex query design.
  • Proficiency in Python or similar language for data processing and AI integration.
  • Experience working in a test-driven environment and writing unit and integration tests
  • Proven ability in technical troubleshooting.
  • Capable of working independently as well as collaboratively with teams across different time zones.
Preferred Qualifications:
  • Experience working with vulnerability scanning technologies on any part of the tech stack (e.g., SCA, SAST, DAST, IAST, VM Scanning, Container, etc.)
  • Experience with column store databases and columnar data, especially using SingleStore/MEMSQL
  • Experience integrating AI/LLM-driven features with data platform.
  • Familiarity with Agile/Scrum methodologies in a professional setting.
  • Experience maintaining applications on Linux platforms in cloud environments.
  • Experience with modern versions of PHP, and the Zend and Laminas Frameworks
  • Improve key components of the application to enable data scalability.

Why You Should Be Excited
  • Nucleus is a truly unique solution that’s defining a market AND making an actual impact. 
  • We’re biased, but you will get to work with one of the best teams in security. We have a lot to get done and we work extremely hard, but we have fun in the process. 
  • Outstanding benefits
    • 401k company contribution (not a match, a contribution)
    • 100% company-paid healthcare options
    • Company HSA contribution on eligible insurance plans
    • 100% company-paid vision & dental
    • 100% company paid short term disability insurance
    • 100% company paid life insurance
    • Fully remote
    • Flexible PTO
Salary Range $135,000 - $165,000 annually


Additional Information
At Nucleus we are committed to achieving excellence in our field by combining diversity, collaboration, teamwork, and pride in our work. All qualified applicants will receive consideration for employment without regard to race, sex, color, religion, sexual orientation, gender identity, national origin, protected veteran status, or disability.

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Job type

Full Time

Experience level

Salary

Salary: 135k-165k USD

Location requirements

Hiring timezones

United States +/- 0 hours

About Nucleus Security

Learn more about Nucleus Security and their company culture.

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What began as a practical solution to a complex problem for a pair of Department of Defense security experts has evolved into a leading force in the cybersecurity landscape. Nucleus Security was born from the firsthand experience of its founders, Steve Carter and Scott Kuffer, who were grappling with the unwieldy and inefficient nature of manual vulnerability management. They envisioned a more streamlined, automated, and intelligent way for organizations to handle the relentless onslaught of security threats. This vision materialized into a platform designed by practitioners, for practitioners, with the core mission of transforming how enterprises and government agencies prioritize and mitigate risks at scale.

The journey started with a clear goal: to build a centralized hub that could unify disparate vulnerability data, automate cumbersome workflows, and ultimately empower security teams to act faster and more decisively. Early on, the focus was on creating a tool that could make sense of the chaotic influx of information from various security scanners and tools. This commitment to unification and automation quickly resonated with organizations struggling to keep pace with the evolving threat landscape. Today, major corporations like Motorola, Paychex, and Mastercard rely on Nucleus to bring clarity and control to their vulnerability management programs. The platform's ability to integrate with over 160 security and business tools allows it to serve as a single source of truth, breaking down data silos and providing a comprehensive view of an organization's risk posture. This success has not gone unnoticed, with Nucleus being recognized on the Deloitte Technology Fast 500 as one of the fastest-growing companies in North America, a testament to its innovative approach and the critical need it addresses in the market.

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Nucleus Security

Company size

51-200 employees

Founded in

2019

Chief executive officer

Steve Carter, Scott Kuffer

Employees live in

View company profile

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