Senior Staff Backend AppSec Engineer, SentinelOne
$184-230k
+ Restricted Stock Units & Employee Stock Purchase Plan
Autonomous cybersecurity platform
Be an early applicant
Autonomous cybersecurity platform
1001+ employees
Be an early applicant
$184-230k
+ Restricted Stock Units & Employee Stock Purchase Plan
1001+ employees
Company mission
To defeat every attack, every second, of every day.
Role
Who you are
- We’re looking for people who are relentlessly curious and committed to continuous learning. AI is reshaping every function across our business, and we enable every team member, regardless of role or level, to build fluency in AI tools and concepts
- 7+ years in application security or product security with a strong software development background
- Proven track record translating complex findings into technical and executive-level debriefs. Excellent written and verbal communication is essential
- Experience delivering customer-facing or consulting-style engagements end-to-end, comfortable in a distributed remote organization
- Expert-level Python backend stack; Django, Flask, FastAPI
- Expert-level Node.js / TypeScript; Express, NestJS
- Working knowledge of front-end framework (React, Next.js, or Angular) and can follow how auth, CSRF, and data move between the client and the API
- Mastery of OWASP Top 10, CWE Top 25, and modern authentication infrastructure (SAML, OAuth, OIDC, JWT internals)
- Hands-on experience authoring custom static-analysis rules and queries for modern SAST engines; familiarity with AI-assisted code review workflows and validating findings produced by automated and agentic analysis pipelines
- Working knowledge of Python and JS packaging and dependency-resolution behaviors (pip/Poetry/uv; npm/pnpm/yarn) and the supply-chain failure modes specific to each
- Fluency with Git-based source control and CI/CD pipelines, including build-pipeline security controls, runner hardening, and release-gate enforcement
- Experience with AI accelerated development / code scanning methodologies
What the job involves
- Those who thrive here actively seek out new solutions, experiment thoughtfully, and apply what they learn to drive better, faster, smarter outcomes
- As a Sr. Staff Back-End AppSec Engineer you will be tasked with becoming the trusted advisor customers turn to on Python and NodeJs stacks when the stakes are highest. You'll work directly on top of the output of our agentic code scanning pipeline, validate findings with human judgment, deliver results to diverse technical and leadership audiences, and shape the methodology that scales the practice
- Lead Wayfinder Frontier AI Services customer engagements end-to-end, scope the work, deliver the technical findings, and present results to executive and technical stakeholders
- Review and triage findings from our agentic code scanning pipeline against customer Python and JS codebases. Validate true positives, eliminate noise, and ensure every finding that reaches the customer is a decision they can act on
- Conduct deep code review across Python and Node.js code and common frameworks
- Present findings to stake holders, translate technical risk into business impact and map exposures into end-to-end exploitation chains
- Author and maintain SAST rule packs that scale across the customer base, and partner with our AI/ML engineers to improve our agentic scanning engine
- Provide expert remediation guidance to customer development teams and validate fixes through follow-up review
- Work closely with our engineering teams to enhance our agentic code scanning pipeline, and reduce false positives
- Mentor Senior-level AppSec engineers and dev-skilled threat hunters; raise the technical bar of the practice and shape the service line's methodology, engagement playbooks, and scoping templates
Our take
Cybercriminals are now leveraging the power of automation to make the current threat landscape too advanced for a lot of legacy antivirus software. SentinelOne is a cybersecurity company that matches this automation with machine learning-focused software designed to help businesses defend against online attacks.
The company expanded the scope of its business from the endpoint security market to three markets valued at a combined $30 billion, including the corporate endpoint security and IT operations management markets. This gives SentinelOne a bigger potential customer base, although it also puts them in direct competition with more focused cybersecurity companies, in addition to its biggest competitor, CrowdStrike.
When the company went public in 2021, it made financial headlines as the highest-valued cybersecurity IPO ever, which gave SentinelOne a market capitalisation of $10 billion. However, it's since fallen to around $ 4 billion. It has subsequently launched S Ventures, a $100M fund, through which SentinelOne invests in cybersecurity startups and has expanded its partnership with major tax firm KPMG to accelerate cyber investigations and responses to threats.
Steph
Company Specialist at Welcome to the Jungle
Insights
61% employee growth in 12 months
Company
Funding (last 2 of 9 rounds)
Feb 2021
$100m
LATE VC
Nov 2020
$267m
LATE VC
Total funding: $801.2m
Company benefits
- Incentive-based Wellness Challenges
- Medical, Dental & Vision
- Gym Reimbursement
- Career Wellness Perks
- Mental Health & Mindfulness
- Paid Parental Leave
- 401k
- Flexible Spending Accounts
- Short & Long Term Disability Insurance
- Employee Assistance Program
- Life Insurance
- Unlimited Time Off
- Paid Sick Time
- Paid Holidays
- Happy Hours
- Parties & Celebrations
- Team Building Activities
- All-Hands & Town Hall Gatherings
Company HQ
Old Mountain View, Mountain View, CA
Leadership
Tomer Weingarten
(Co-Founder & CEO)They started their career in Software Development at Mckit Systems prior to co-founding dPolls and Carambola Media. They left their position as VP of Products at Toluna in December 2012 to found SentinelOne in January 2013, where they serve as CEO.
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