fluxoutbox Logo

fluxoutbox

Senior Application Security Engineer

Posted Yesterday
Be an Early Applicant
Remote
Hiring Remotely in United States
Senior level
Remote
Hiring Remotely in United States
Senior level
Own and evolve the application security program, partnering with development teams to embed secure coding, threat modeling, code review, and vulnerability remediation. Manage SAST, SCA, DAST, ASM, mobile security, and WAF tooling while improving CI/CD automation. Collaborate with DevOps on AWS, ECS, IAM, networking, containers, and secure infrastructure. Develop standards, playbooks, and training, lead vulnerability triage, and support incident investigations and PCI compliance reporting.
The summary above was generated by AI

While we're proud of what we've already accomplished, we're searching for new collaborators to help us get to the next level! If you're looking to join a forward-thinking, rapidly growing organization with helping people as its number one goal, we want to hear from you.

 

As our Senior Application Security Engineer, you will be the primary owner and driver of our application security program. You’ll work hands‑on with engineering teams to embed secure development practices, improve tooling and automation, and guide security considerations for new features, architectures, and services.

This is a high‑impact role where you’ll shape the future of AppSec at a company that values security as a core part of product quality.

What You’ll Do

Application Security Ownership

  • Lead and evolve the company’s application security strategy, roadmap, and day‑to‑day operations.
  • Serve as the primary AppSec partner for numerous dev teams working on Ruby on Rails web apps, React Native mobile apps, and various other projects including Python and Go.
  • Provide security guidance during design, development, and code review for new features and projects.
  • Drive adoption of secure coding practices and threat‑modeling across engineering teams.

Tooling & Automation

  • Manage and optimize existing AppSec tooling, including:
    • GitHub Advanced Security (SAST, SCA, Secret Scanning)
    • Invicti (DAST)
    • Hadrian (ASM)
    • AppDome (mobile application security)
    • Cloudflare WAF
  • Improve automation and integration of security tools into CI/CD pipelines.
  • Identify and implement additional tools or processes to strengthen the security posture.

Secure SDLC & Developer Enablement

  • Build and maintain secure development standards, playbooks, and training materials.
  • Partner with engineering teams during sprint planning and feature design to proactively address risks.
  • Conduct security reviews, code assessments, and vulnerability triage with development teams.

Cloud & DevOps Collaboration

  • Work with DevOps to ensure secure AWS infrastructure deployments and configurations.
  • Contribute to hardening efforts across ECS, IAM, networking, and supporting cloud services.
  • Assist in designing and maintaining secure CI/CD workflows.

Incident & Vulnerability Management

  • Lead or support investigation and remediation of application‑level vulnerabilities.
  • Monitor, prioritize, and track findings from SAST/DAST/ASM tools.
  • Collaborate with engineering to ensure timely and effective remediation.

What We’re Looking For

Required Skills & Experience

  • 3–7+ years of experience in Application Security, Product Security, or related engineering roles.
  • Strong understanding of secure coding practices, common vulnerabilities (OWASP Top 10), and modern SDLC.
  • Experience working with cloud‑native applications, ideally in AWS.
  • Understanding of SSL certificates & cryptographic key management
  • Hands‑on experience with SAST, DAST, WAFs, and/or mobile application security tools.
  • Ability to partner effectively with developers and influence secure design decisions.
  • Familiarity with GitHub‑based workflows and CI/CD pipelines.

Nice to Have

  • Development experience with Ruby on Rails or similar dynamic languages.
  • Knowledge of AWS ECS/EKS, container security, secrets management and infrastructure‑as‑code (CloudFormation, Terraform).
  • Experience building or maturing an AppSec program from early stages.
  • SOAR Automation & Scripting experience

• • Experience working in a PCI compliant environment working with annual reporting needs

Similar Jobs

14 Days Ago
Easy Apply
Remote or Hybrid
United States
Easy Apply
140K-165K Annually
Senior level
140K-165K Annually
Senior level
Fintech • Financial Services
Own and evolve the application security program: embed secure SDLC practices, partner with engineering on design and code reviews, manage AppSec tooling (SAST/DAST/ASM/WAF/mobile), harden AWS deployments, integrate security into CI/CD, and lead vulnerability investigation and remediation efforts.
Top Skills: AppdomeAsmAWSCi/Cd PipelinesCloudflare WafCryptographic Key ManagementDastEcsGithub Advanced SecurityGoHadrianIamInvictiMobile Application Security ToolsPythonReact NativeRuby On RailsSastScaSecret ScanningSsl Certificates
7 Days Ago
Remote or Hybrid
USA
160K-250K Annually
Senior level
160K-250K Annually
Senior level
Cloud • Computer Vision • Information Technology • Sales • Security • Cybersecurity
Lead application security for products by performing threat modeling, manual secure code reviews, and penetration testing. Collaborate with engineers to remediate defects, build AppSec automation and tooling, secure cloud/containerized applications, and drive bug-bounty responses to harden platform security.
Top Skills: Ai TechnologiesApi SecurityAppsec ToolsAspmAWSAzureBug BountyChromeCspmDastDockerDspmElectronFirefoxGCPGo (Golang)JavaScriptKotlinKubernetesNode.jsPythonReactSastScalaStrideTypescriptWebassembly (Wasm)
4 Days Ago
Remote
2 Locations
135K-150K Annually
Senior level
135K-150K Annually
Senior level
Fintech • Information Technology • Other • Payments
Lead hands-on application security testing and secure code review across priority apps. Perform SAST/DAST/SCA/container scans and web/API testing, integrate automated checks into CI/CD, coach Security Champions, apply threat modeling and AI-assisted tooling, and produce clear vulnerability reports with remediation guidance to engineering and management.
Top Skills: Ai-Assisted ToolingAi/LlmCi/CdCloud SecurityContainer ScanningDastMobile SecurityOwasp Top 10Reverse EngineeringSastScaSecrets DetectionThreat ModelingWeb/Api Testing

What you need to know about the Boston Tech Scene

Boston is a powerhouse for technology innovation thanks to world-class research universities like MIT and Harvard and a robust pipeline of venture capital investment. Host to the first telephone call and one of the first general-purpose computers ever put into use, Boston is now a hub for biotechnology, robotics and artificial intelligence — though it’s also home to several B2B software giants. So it’s no surprise that the city consistently ranks among the greatest startup ecosystems in the world.

Key Facts About Boston Tech

  • Number of Tech Workers: 269,000; 9.4% of overall workforce (2024 CompTIA survey)
  • Major Tech Employers: Thermo Fisher Scientific, Toast, Klaviyo, HubSpot, DraftKings
  • Key Industries: Artificial intelligence, biotechnology, robotics, software, aerospace
  • Funding Landscape: $15.7 billion in venture capital funding in 2024 (Pitchbook)
  • Notable Investors: Summit Partners, Volition Capital, Bain Capital Ventures, MassVentures, Highland Capital Partners
  • Research Centers and Universities: MIT, Harvard University, Boston College, Tufts University, Boston University, Northeastern University, Smithsonian Astrophysical Observatory, National Bureau of Economic Research, Broad Institute, Lowell Center for Space Science & Technology, National Emerging Infectious Diseases Laboratories

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account