Sr. Security Engineer

openspace; United States; On-site; USD 180,000 - 230,000; Full time

Benefits offered by this job

100% employer-paid medical, dental, &

Flexible paid time off

401(k) with company match

Paid parental leave

Home office stipend

Employee referral program

Annual company retreats and team"s

Job summary

OpenSpace is seeking a Security Engineer to elevate our in-house security program. You will drive proactive reviews, threat modeling, and secure code practices across production features.

The role focuses on protecting data and systems as AI changes how code is written and how sensitive information flows. You will partner with the security consultant and engineering teams to remediate findings, shape policy, and mature incident response.

Qualifications

• 5+ years of security engineering, application security, or product security.
• Hands-on experience with proactive security reviews (threat modeling, design review, secure code review).
• Strong fundamentals in web app security and cloud security (AWS/GCP).
• Ability to read/review code in Python, Java/Kotlin, or TypeScript.

Responsibilities

• Run proactive security reviews of new features, architectures, and third-party integrations before they ship.
• Build and mature our application and product security practice (threat modeling, design review, secure SDLC).
• Own AI-related security risk approaches and tooling governance for internal use.

Skills

Security engineering

Threat modeling

Secure code review

Cloud security (AWS/GCP)

Web app security

AI security perspective

Code review (Python/Java/Kotlin/TypeS​

Job description

At OpenSpace, we're redefining how the world's most complex projects are built. Our AI-powered Visual Intelligence Platform uses computer vision and spatial AI to give construction teams a real-time view of what's happening on-site, helping them build faster, safer, and with greater confidence.

But what truly sets us apart is our people. We hire curious, driven teammates who love solving hard problems, taking ownership, and making a real-world impact. Great people build great culture-and apparently it shows. Forbes has named OpenSpace one of America's Best Startup Employers five years in a row. Come see what all the fuss is about.

Brief summary of role:

Security is in OpenSpace's DNA. A significant portion of our core engineering team - including several of our most senior engineers - came together at a security SaaS company before OpenSpace, and that shows up in how we design systems, review code, and think about customer data. We run a mature program today: an external security partner handles pen testing and structured assessments, our DevOps and IT team owns infrastructure security, IAM, and endpoint, and product engineers carry real ownership of the code they ship.

What we don't yet have is a dedicated in-house security engineer, and the surface area is growing fast - particularly as AI changes how code gets written and where sensitive data flows. This role is about going from strong to elite: building the proactive security review muscle that lives day-to-day inside the engineering org, rather than at the cadence of an external engagement.

You'll partner with our existing security consultant rather than replace them. They keep running pen tests and structured assessments; you build the in-house practice that catches issues long before they reach one.

What you will be doing:

• Run proactive security reviews of new features, architectures, and third-party integrations before they ship
• Build out our application and product security practice: threat modeling, design review, secure SDLC integration
• Own our approach to AI-related security risk, including:
  • Securing our own AI/ML systems and the data flowing through them
  • Governing internal use of AI dev tools (Claude Code and similar) so we move fast without leaking sensitive data
  • Reviewing AI-assisted code contributions and helping us evolve our policies as the tooling matures
• Partner with engineering teams to triage and remediate vulnerabilities from pen tests, customer findings, and internal discovery
• Support our SOC 2 and ISO 27001 programs as a key technical contributor (compliance ownership lives elsewhere, but you'll be the engineering voice in the room)
• Help mature our incident response practice and run security tabletop exercises
• Build internal tooling and automation that scales security review without bottlenecking shipping
• Work with our consultant on scoping pen tests, vendor assessments, and customer security reviews

What we are looking for:

• 5+ years in security engineering, application security, or product security
• Hands‑on experience doing proactive security review (threat modeling, design review, secure code review) on production systems
• Strong fundamentals in web application security, cloud security (we run primarily on AWS and GCP), and modern auth patterns
• Comfortable reading and reviewing code across at least one of our stacks (Python, Java/Kotlin, TypeScript)
• A real point of view on how AI changes the security landscape, both as a new risk surface and as new tooling for defenders
• Track record of working effectively in a startup or fast-moving environment where you have to prioritize ruthlessly and make tradeoffs
• Ability to influence engineers without owning their roadmap

Nice to have:

• Experience as the first or early security hire at a growth‑stage company
• Hands‑on contributor experience with SOC 2 and/or ISO 27001
• Background in security automation, internal tooling, or open source security work
• Familiarity with construction tech, geospatial systems, or computer vision

Our US Benefits include:

• 100% employer-paid medical, dental, and vision coverage
• Flexible paid time off
• 401(k) with company match
• Paid parental leave
• Home office stipend
• Employee referral program
• Annual company retreats and team gatherings

Base Salary: $180,000-$230,000

The “Base Salary: range represents the low and high end of the anticipated salary range for this position across all US locations including but not limited to CA, CO, NY, WA, NV, MD, CT and RI. The determination of this anticipated Base Salary involves the consideration of many factors in making compensation decisions including but not limited to: location of candidate, unique skill sets, experience, training, performance, licensure and certifications, as well as other business and organizational needs.

Please note: We are unable to provide visa sponsorship or employment-based immigration support for this position. Applicants must be authorized to w