Remote Cyber security Jobs · Application Security

Job listings

$225,400–$281,800/yr
US Unlimited PTO

  • Lead Apollo's multi-year AppSec strategy and shape cross-team roadmaps.
  • Set secure design, code review, and AI security standards across engineering.
  • Mentor security champions and build automation that scales secure practices.

Apollo.io is the leading go-to-market solution for revenue teams, trusted by over 500,000 companies. Founded in 2015, it has raised ~$250M and is valued at $1.6B, with a culture focused on AI-native innovation and continuous improvement.

UK Unlimited PTO

  • Support application security programs including threat modeling and security reviews for web and AI/LLM systems.
  • Triage SCA/SAST/DAST/CSPM findings and coordinate remediation with engineering teams.
  • Develop automation scripts and tools to integrate security solutions and streamline vulnerability management.

G-P is a leading SaaS-based Global Employment Platform that enables companies to expand into over 180 countries without establishing local entities. With a diverse, remote-first culture, G-P empowers its Dream Team with flexibility and resources to foster innovation and growth.

  • Conduct threat modeling and risk assessments across product features, AI agents, cloud infrastructure, and data systems to identify vulnerabilities.
  • Partner with engineering, IT, and data teams to embed security into development processes through design reviews and secure coding guidance.
  • Run vulnerability management, bug bounty coordination, incident readiness, and SOC 2 compliance support to build scalable security practices.

n8n is an open workflow orchestration platform for AI-powered automation, combining code freedom with no-code speed. Since 2019, it has grown to 260+ employees across Europe and the US, backed by top investors and a 650,000-developer community.

US Unlimited PTO

  • Run full kill chains against web, mobile, API, and thick/thin clients, proving exploitability and mapping blast radius.
  • Train the swarm by translating your tradecraft into reasoning and evaluation data for autonomous AI attackers.
  • Pressure-test the swarm, build tools, and tell the attack story to engineers and executives.

Armadin builds autonomous proactive security, deploying AI agents that discover and remediate threats before breaches. We're a scrappy, high-ownership team of elite researchers and engineers, led by Kevin Mandia, with startup-level autonomy.

Brazil 4w PTO

  • Investigate and remediate application security vulnerabilities directly in code, implementing fixes and submitting pull requests.
  • Deploy, configure, and optimize SAST and SCA tools across repositories and CI/CD pipelines, reducing false positives.
  • Triage and prioritize security findings while collaborating with engineering teams to embed secure coding practices.

Partner company is a technology firm delivering large-scale international projects with a focus on integrating application security into the software development lifecycle. They foster a collaborative, globally distributed engineering culture with an informal environment, open-door policy, and continuous learning opportunities.

$175,000–$230,000/yr
North America Unlimited PTO

  • Shape application security practices by integrating automated safeguards throughout the software development lifecycle.
  • Collaborate with Security and Engineering teams to identify vulnerabilities early and manage bug bounty programs.
  • Conduct threat modeling and secure code reviews for Java and Python microservices while fostering developer security ownership.

This partner company protects payment infrastructure and enables secure, scalable digital commerce. It operates as a remote-first, security-focused fintech organization with a fast-moving culture and globally distributed teams.

US 4w PTO

  • Lead application security protocols throughout the SDLC.
  • Partner with engineering teams to embed security into architecture and development.
  • Perform hands-on security testing of web apps, APIs, and cloud-native services.

K Health is an AI-powered virtual care engine that modernizes the primary care loop using clinical AI and virtual clinics. Founded in 2016 and headquartered in New York City, the company is backed by over $443.5M and aims to build diverse, collaborative teams.

  • Review existing RL environments for offensive-security and application-security tasks, confirming vulnerabilities are real, reachable, and solvable with provided context.
  • For patching and exploit-construction tasks, trace or attempt the intended path and verify grading correctly distinguishes genuine fixes from pattern-matching or workarounds.
  • Flag inconsistent files, missing context, or ambiguity, and write clear justifications for each accept, reject, or flag decision.

idlexperts is idler's quality assurance network of part-time, remote experts who review reinforcement-learning environments before they reach customers. The culture is flexible, async, and self-directed, with experts expected to work a handful of hours per week and deliver clear written judgments.

$175,000–$230,000/yr
North America Unlimited PTO

  • Automate security controls by integrating SAST, DAST, and SCA tools into CI/CD pipelines to catch vulnerabilities before production.
  • Define and drive a developer-friendly Secure SDLC, including threat modeling frameworks like STRIDE and security champions network.
  • Manage the private bug bounty program, triage reports, lower mean time to mitigation, and conduct code reviews for Java and Python microservices.

VGS is the world's leader in payment tokenization, providing the trust infrastructure for modern commerce and agentic payments. Trusted by Fortune 500 companies and innovative fintechs, VGS stores over 9 billion tokens and processes 10 billion monthly interactions, with a remote-first culture that values curiosity, ownership, collaboration, and continuous learning.

  • Own application security across cloud services, APIs, data pipelines, and edge-deployed systems.
  • Lead threat modeling, secure design reviews, and in-depth code reviews to identify and fix vulnerabilities.
  • Build and integrate security tooling like SAST, DAST, SCA, and CodeQL into CI/CD and mature the secure SDLC.

Quartermaster AI leverages cutting-edge AI and robotics to make the ocean a safe and sustainably managed resource. It is a fast-moving, rapidly scaling defense-tech startup with a mission-driven culture and significant autonomy for engineers.