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Rebrand Announcement: 0xTeam is now Vaultline Security. Read more

[Security Careers]

Break Things
Carefully.

Vaultline (formerly 0xTeam) hires people who read code for vulnerabilities: contracts, applications, or infrastructure. Remote-first.

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Smart Contract Security
Application Security
AI/ML Security
Research & Development
Remote-First
Full-Time
Security Careers
Join The Team
Smart Contract Security
Application Security
AI/ML Security
Research & Development
Remote-First
Full-Time
Security Careers
Join The Team

Why Join

Why Work With Us

Cutting-Edge Work

Work on the forefront of blockchain and AI security, using and building the tools our engineers rely on daily.

Remote-First

Work from anywhere, alongside a global team of security engineers and researchers.

Continuous Learning

Training, conferences, and research time to keep your skills current.

Competitive Compensation

Strong salary, equity, and benefits for team members worldwide.

Real Impact

Help secure the systems people trust with their money, protecting billions in assets and real users.

Growth Opportunities

Clear paths to grow your skills, scope, and responsibility.

Open Roles

Open Positions

Growth & Sales · Remote · Full-time

Business Developer

Drive the growth of our client base by identifying new opportunities, nurturing leads, and building long-term partnerships with the auditing and research teams.

Apply Now

Responsibilities

  • Identify and engage potential Web3 clients and partners
  • Manage end-to-end sales pipelines from outreach to closure
  • Collaborate with the security and research teams to prepare proposals
  • Track Web3 industry trends, events, and competitor strategies
  • Maintain CRM systems and report on growth metrics
  • Represent Vaultline at virtual and in-person Web3 events

Requirements

  • 1-3 years experience in business development or sales
  • Strong understanding of Web3 and blockchain ecosystems
  • Excellent communication and negotiation skills
  • Experience with CRM tools such as Notion or HubSpot
  • Self-driven and goal-oriented in a remote-first environment

Hiring Soon

Smart Contract Auditor

Coming Soon

Application Security Engineer (OSCP/CRTP preferred)

Coming Soon

Security Researcher, AI Systems

Coming Soon

Don't See the Right Role?

We're always looking for people who read code for vulnerabilities. Send your resume and tell us how you can contribute.

Contact Us

Talk to an Engineer,
Not a Sales Team.

Free 30-minute scoping call. Quote within 24 hours. NDA standard.

© Vaultline Security 2026 — formerly 0xTeam. All rights reserved.