Authentication AI Startup Jobs

1Password provides password, secrets, and access management software for teams and enterprises, securing credentials, app access, and AI tool usage in one platform.

Supabase is an open-source Firebase alternative providing a full backend-as-a-service platform built on PostgreSQL, including database, auth, realtime subscriptions, edge functions, storage, and vector embeddings for developers.

Tailscale builds identity-first networking software on WireGuard so teams can securely connect users, devices, services, and AI systems across private infrastructure without VPN complexity.

Neo (Neo Security, Inc.) is a Boston-based, 2025-founded startup with an R&D center in Tel Aviv that is defining the 'Agentic Software Control' category: a real-time security control layer for enterprise AI agents and intelligent software. It discovers the AI agents, models, extensions, scripts, and MCP servers running on enterprise devices, inspects their permissions and data access, attributes each action to a person/agent/app, and can allow, block, or pause operations in real time, backed by its Neoverse knowledge base. Founded by former SentinelOne, Wiz, and Palo Alto Networks veterans (CEO Nick Warner, ex-SentinelOne president/COO), it emerged from stealth in July 2026 with $100M from Andreessen Horowitz and Bessemer.

WorkOS is a developer platform that provides APIs for quickly adding enterprise-grade features like Single Sign-On (SSO), Directory Sync (SCIM), Audit Logs, and User Management to applications. Often described as 'Stripe for enterprise features,' WorkOS powers authentication and identity for the fastest-growing AI companies including OpenAI, Anthropic, and Cursor.

Privacy-first mobile carrier redesigning telecommunications from the ground up. Cape owns and operates its own mobile core and SIMs, providing ultra-private and secure connectivity for enterprises, government, and consumers.

Fingerprint provides device intelligence APIs that help teams recognize returning visitors, prevent fraud, secure accounts, and reduce abuse across web and mobile products.

Middesk is a business identity platform that automates business verification, risk assessment, and underwriting for financial institutions and enterprises. Backed by Sequoia, Accel, and Insight Partners, the platform enables companies to verify business identities quickly and accurately.

Opal Security is the authorization reasoning platform built to secure every identity, from employees and contractors to service accounts and AI agents. Provides unified visibility and defense-in-depth infrastructure for access management.

Bureau is a no-code identity decisioning platform that uses AI-powered insights to prevent fraud in real-time. It serves over 200 global brands across fintech, banking, e-commerce, insurance, and gig economy sectors, having verified over 300 million identities.

Persona provides identity infrastructure for businesses to verify people and organizations, manage onboarding, automate KYC and AML checks, and reduce fraud across regulated digital workflows.

Cloaked is a consumer-first privacy platform that enables individuals to protect their personal data by generating unlimited secure identities including phone numbers, emails, usernames and passwords with end-to-end encryption.

Phantom is a leading multi-chain, self-custodial crypto wallet supporting Solana, Ethereum, Bitcoin, Base, and Polygon with over 15 million monthly active users. The platform offers token swaps, staking, NFT management, and cross-chain capabilities.

Footprint delivers KYC and KYB onboarding with AI-driven identity and fraud checks for financial services teams.

Lumos builds an identity and SaaS management platform that helps IT and security teams automate access requests, lifecycle management, access reviews, and software spend controls from one system.

Duna is an AI-native business identity platform that helps banks, fintechs, and enterprises automate business (KYB) onboarding and compliance. Founded in 2023 by Stripe alumni and headquartered in Amsterdam, it operates a shareable business-identity network and a policy engine that turns compliance rules into auditable, executable code. Customers include Plaid, Fiserv (CCV), Moss, and SVEA Bank.

Consumer-permissioned data platform that provides API access to payroll, employment, and financial data for streamlined income and employment verification, asset verification, and direct deposit switching.

Identity infrastructure provider for managing access to AI agent tools with task-based permissions and dynamic policy enforcement

Bluesky is a decentralized social network built on the AT Protocol, giving users control over their social graph and enabling an open, interoperable layer for social applications. Founded as a Public Benefit Corporation in 2021, it has grown to tens of millions of users as an open-protocol alternative to X, letting users choose their own algorithms, moderation tools, and data portability.

Comun is a New York-based digital neobank providing fee-free financial services tailored to Latino immigrants in the United States. Users can open an FDIC-insured checking account and get a Visa debit card in minutes using 100+ Latin American ID types (no SSN required), with Spanish-first support, remittances, early paycheck access, and instant payments. The company monetizes through interchange, remittance fees, and interest on deposits.

Digital trust infrastructure enabling governments and enterprises to issue, verify, and manage digital identity credentials using open-source decentralized identity toolkits.

Open-source, identity-aware access proxy providing zero-trust secure access to internal applications without requiring a VPN, continuously verifying user identity and device context.

KYB automation for fintechs-AI agents verify businesses and streamline compliance checks.

Clerk provides developer-first authentication and user management infrastructure, including embeddable sign-in flows, session management, organizations, and backend APIs for modern web applications.

Authorization-as-a-service platform providing fine-grained access control with declarative policy language.

Proof provides identity-centric trust infrastructure for high-stakes digital transactions, combining identity verification, notarization, and authorization workflows.

CloudEagle.ai is an AI-powered SaaS management, spend optimization, and identity/AI governance platform for enterprises. It gives IT, finance, and procurement teams a single system to discover shadow SaaS, automate license provisioning and access reviews, and renegotiate vendor renewals. The company reports managing over $15B in SaaS spend and was named a Leader in the 2026 Gartner Magic Quadrant for SaaS Management Platforms.

Defakto (formerly SPIRL, rebranded October 2025) builds a non-human identity and access management platform that replaces static secrets and overprivileged service accounts with short-lived, cryptographically verifiable workload identities. Built on the open SPIFFE standard, it discovers, issues, enforces, and governs identities for services, CI/CD pipelines, Kubernetes workloads, and AI agents across multi-cloud and on-prem environments. Founded by Eli Nesterov (CTO) and Danny Oliveri (CEO), it was named a Gartner Cool Vendor in Identity-First Security in 2025.

NewCore is a security-first, unified identity platform that secures and governs every human, machine, and AI-agent identity under one architecture, discovering all identities and access relationships and continuously governing permissions and agent behavior. It launched from stealth in June 2026 with $66M in seed funding at a $300M valuation, led by cybersecurity veterans behind Dome9.

PropelAuth is a fully managed authentication and authorization platform built specifically for B2B SaaS products, covering multi-tenant organizations, enterprise SSO, SCIM, RBAC, and MCP server auth. It ships hosted pre-built UIs plus SDKs so developers can add org-aware login, user management, and self-service admin without building it in-house. A Y Combinator W22 company, it operates as a remote-first US team.