Source Job

$240,000–$270,000/yr
US Unlimited PTO

  • Develop advanced defensive security capabilities including deception technologies and threat detection.
  • Lead technical vision and execution for security-focused workstreams from concept to production.
  • Collaborate with product, engineering, and security teams to build scalable, secure software.

Python Go Rust Threat Detection Network Security

20 jobs similar to Staff Defensive Security Software Engineer

Jobs ranked by similarity.

$152,000–$175,000/yr
US Unlimited PTO

  • Lead threat modeling, architecture reviews, and code reviews for web applications, APIs, and microservices.
  • Actively develop and commit code to fix security flaws in Python, Go, or JavaScript/TypeScript codebases.
  • Implement and manage security testing tools within CI/CD pipelines to catch vulnerabilities early in the SDLC.

RunPod is the AI Developer Cloud, providing a platform for developers to experiment, train, fine-tune, deploy, and scale AI. We are a small, remote-first team that has processed over 20 billion inference requests and closed a $100M Series A in June 2026.

US Unlimited PTO

  • Partner with product and engineering teams to identify security risks and implement secure solutions throughout the product lifecycle.
  • Lead threat modeling activities, secure design reviews, and security-focused code reviews to improve development practices.
  • Build, maintain, and improve application security tooling and participate in incident response activities.

The partner company is a fast-moving engineering organization focused on protecting modern software products and the sensitive data they manage. The team values innovation, inclusion, and continuous improvement, and offers a collaborative culture with high ownership.

$139,200–$196,000/yr
US

  • Develop and enhance abuse prevention systems and detection rules to protect against evolving threats.
  • Build and maintain internal security platforms using Ruby on Rails and integrate AI-powered security capabilities.
  • Collaborate with cross-functional teams to implement security improvements and support incident response activities.

The hiring partner is a technology company that operates a large-scale software platform and prioritizes security and trust. The organization supports a fully remote workforce and emphasizes collaboration and professional growth.

$125,000–$205,000/yr
US Unlimited PTO

  • Design and implement security automation solutions to improve scalability, reliability, and efficiency across security and compliance operations.
  • Build security telemetry capabilities for continuous control evidence collection, monitoring, and real-time risk visibility.
  • Develop automation frameworks and identity management solutions for provisioning, access governance, and scalable workflows.

Jobgether is a platform that uses AI-powered matching to connect candidates with hiring companies. They are a fast-growing technology environment offering remote-friendly work and opportunities for global collaboration.

$140,400–$372,300/yr
US

  • Partner with engineering teams to improve reliability, scalability, and operational health of production systems.
  • Investigate and resolve complex production incidents, designing sustainable long-term solutions.
  • Design, build, and maintain automation tools and infrastructure to enhance developer productivity.

The company builds and maintains highly reliable, scalable production systems supporting millions of users worldwide. It fosters a remote-first culture that values innovation, collaboration, and engineering excellence.

Europe US Unlimited PTO

  • Triage, validate, and remediate security vulnerabilities across products, infrastructure, and internal systems.
  • Develop, maintain, and contribute to internal and open-source security tooling, writing production-grade code.
  • Improve secure development practices through code reviews, threat modeling, and security design reviews.

Tiger Data provides the fastest PostgreSQL platform for transactional, analytical, and agentic workloads. With over 2,000 customers and 3 million active databases, it is a remote-first team backed by $180 million in funding.

$105,000–$120,000/yr
US

  • Design and implement network automation solutions using Python, APIs, and infrastructure-as-code to improve reliability and scalability.
  • Collaborate with cross-functional teams to translate technical requirements into automated workflows and operational improvements.
  • Build and maintain CI/CD pipelines, source-of-truth platforms, and multi-vendor network automation frameworks.

The company specializes in network automation and enterprise infrastructure solutions. It values innovation, collaboration, and technical excellence in a fully remote environment.

US

  • Partner with engineering and product teams to identify application security risks and provide practical mitigation recommendations.
  • Analyze code, configurations, and logs to detect vulnerabilities and improve security workflows.
  • Communicate security risks clearly to technical and non-technical stakeholders and drive scalable solutions.

$124,000–$329,200/yr
United States

  • Design and develop scalable backend services using Go for authentication and identity management.
  • Build geo-redundant, highly available services across multiple cloud regions.
  • Collaborate with cross-functional teams to deliver secure, user-focused features.

Jobgether uses AI-powered matching to connect candidates with hiring companies. It focuses on efficient recruitment with a remote-first, collaborative culture.

$212,500–$255,000/yr
US Unlimited PTO

  • Architect and evolve scalable backend systems using Python and modern technologies.
  • Build distributed, data-intensive systems with high performance and operational excellence.
  • Collaborate with product, data, and machine learning teams to integrate AI/ML capabilities.

This partner company builds large-scale, data-intensive systems for next-generation digital experiences. It fosters a collaborative, remote-first culture focused on innovation, performance, and long-term impact.

UK

  • Monitor security events and provide technical analysis on alerts.
  • Lead information security incidents and employee insider investigations.
  • Coordinate building of services and technologies to support security operations.

Samsara is the pioneer of the Connected Operations Cloud, enabling organizations to harness IoT data for actionable insights. A recently public company, it fosters a collaborative and growth-minded culture focused on safety, efficiency, and sustainability.

Asia

  • Build production-grade security applications and services using Python.
  • Develop internal security platforms and tooling from scratch.
  • Design and enforce secure cloud architectures (AWS) and implement policy enforcement for IAM least-privilege models.

Binance is a leading global blockchain ecosystem behind the world’s largest cryptocurrency exchange by trading volume and registered users. They are trusted by 300+ million people in 100+ countries and have a diverse workforce.

United States

  • Design and drive engineering-wide reliability programs to improve software quality and deployment confidence.
  • Build and enhance automated testing frameworks, CI/CD pipeline gates, and quality controls.
  • Develop scalable load testing solutions and production validation strategies for safe, high-confidence releases.

Jobgether uses an AI-powered matching process to ensure applications are reviewed quickly and fairly. They operate with a remote-first approach and collaborate with partner companies for hiring.

$175,000–$217,000/yr
US Unlimited PTO

  • Build into the product by writing investigation flows, building integrations with security tools, and fixing bugs.
  • Evolve the investigation logic and pipelines to handle new classes of security alerts, balancing accuracy, performance, and maintainability.
  • Contribute directly to the Python codebase while influencing architectural decisions and long-term product strategy.

Dropzone AI scales cybersecurity beyond human limits by augmenting security engineers with AI specialists. The venture-backed company is disrupting the $200B+ cybersecurity market and has a team with deep experience in cybersecurity, AI/ML, and SaaS.

$100,000–$150,000/yr
US

  • Design, build, and operate scalable infrastructure platforms for large-scale AI model training and inference.
  • Manage and optimize GPU clusters, distributed training environments, and scheduling systems for machine learning applications.
  • Develop software solutions and automation tools using Python and systems programming languages like Go or C++.

Our partner builds and operates foundational technology powering advanced AI training and inference workloads at scale. They offer a collaborative culture focused on innovation, engineering excellence, and continuous learning.

United States

  • Design, build, and operate an AI-augmented red teaming harness using advanced LLM APIs for autonomous vulnerability discovery.
  • Conduct adversarial testing across external, internal, and privileged perspectives, chaining and validating vulnerabilities.
  • Collaborate with DevSecOps, SOC, and engineering teams to improve security automation and detection workflows.

This company provides a cloud-based platform for highly security-conscious organizations. It fosters a remote-first culture focused on innovation, ownership, and continuous learning.

US

  • Serve as technical authority for enterprise financial systems, billing platforms, and data solutions.
  • Design and oversee scalable, secure, and resilient distributed systems across enterprise platforms.
  • Lead architecture reviews, mentor engineers, and champion AI technologies like LLMs and RAG.

US 4w PTO

  • Lead application security reviews, threat modeling, and secure code review for new features and significant product changes.
  • Operate and improve SAST, DAST, and SCA tooling, triage findings, and partner with engineering teams to harden the codebase.
  • Plan and execute internal penetration tests against web applications, APIs, and mobile clients, and own the vulnerability management lifecycle.

ButterflyMX empowers people to automate property access, operations, and security from a single platform, serving over 20,000 properties worldwide. As a distributed, primarily remote workforce, they seek intelligent, passionate, and collaborative individuals driven by a shared commitment to excellence and innovation.

US 5w PTO

  • Own key security domains such as vulnerability management, application security, API security, and supply chain security.
  • Partner with engineering teams to integrate security into design reviews, threat modeling, CI/CD pipelines, and developer workflows.
  • Develop and improve security tooling and automation to reduce manual effort and leverage AI for triage and detection.

NinjaTrader is an industry-leading trading platform and futures broker that empowers traders with award-winning software and brokerage services. Since 2003, the company has grown to over 2 million users and is the number one rated futures brokerage worldwide, fostering a dynamic culture focused on social connection, professional development, and employee recognition.

$180,000–$240,000/yr
Global Unlimited PTO

  • Develop and maintain a multi-platform implant in Rust for Windows, Linux, and macOS.
  • Build C2 infrastructure, post-exploitation modules, and AV/EDR evasion techniques.
  • Design network pivoting and tunneling capabilities, and write integration tests.

Horizon3 is a cybersecurity company that provides the NodeZero autonomous pentesting platform to help organizations find and fix exploitable attack vectors. They are a remote team of former U.S. Special Operations cyber operators and engineers, committed to a culture of respect, collaboration, and ownership.