Fun.xyz

Cross-chain wallet API for DeFi payments

Senior Corporate Security Engineer

Security Engineering & ArchitecturePosted on Nov 12

Full-timeNew York, NY, USA$140k - $200k /yr

About the Job

Requirements

At least 5 years of experience in corporate security, enterprise security, or security-minded IT engineering; startup experience is preferred.
Hands-on experience with an identity provider such as Okta, Entra ID, or Google Workspace as an identity provider, including SSO, SCIM, and conditional access.
Experience securely managing macOS fleets with an MDM such as Jamf, Kandji, or Fleet, and EDR.
Ability to automate repetitive work using Python, Bash, or similar languages against APIs.
Daily use of AI tools such as Claude Code, with judgment about appropriate use and associated risks.
Ability to make risk-based decisions and explain tradeoffs to technical and nontechnical stakeholders.

Responsibilities

Run SSO, MFA, and automated provisioning (SCIM) across Google Workspace and the rest of the technology stack.
Build joiner, mover, and leaver flows so new hires receive appropriate access on day one and departing personnel lose access within minutes.
Conduct regular access reviews and minimize administrative and privileged access.
Define and enforce macOS baselines through MDM, including disk encryption, EDR, operating system updates, and device compliance.
Tie device health to access so unmanaged or out-of-date laptops cannot reach sensitive systems.
Address risks from AI agents and coding assistants on employee machines, including data access, data destinations, and permitted execution.
Harden Slack, Notion, Google Workspace, the CRM, and other SaaS tools through least privilege, external-sharing and guest controls, and data-protection guardrails.
Identify and reduce shadow IT, and manage SaaS seats and licenses.
Conduct security reviews for new vendors and integrations, and maintain a tiered inventory of essential vendors.
Plan for breaches or outages involving critical vendors.
Ensure identity, endpoint, and SaaS activity is logged and actionable.
Own corporate incidents such as phishing, account takeover, and lost devices, and participate in company-wide incident response and blameless postmortems.
Own corporate and IT controls for SOC 2 and similar frameworks, collecting evidence automatically.
Help answer enterprise customers' security questionnaires and reviews.
Establish the corporate security baseline and maintain it, using configuration as code, automated access provisioning, and robust security controls.
In the first 30 days, inventory identities, devices, and critical SaaS applications and identify gaps.
By 60 days, complete SSO, MFA, and automated offboarding across the core stack, and enroll every laptop in MDM with EDR running.
By 90 days, manage core identity and SaaS configuration as code, establish a working vendor-review process, and write and agree on the corporate security roadmap for 2027.

Desired Qualifications

Terraform or other configuration-as-code experience for identity, MDM, or SaaS.
Experience at a crypto, fintech, or payments company, particularly one handling real money.
Experience taking a company through SOC 2 or ISO 27001.
Incident response or SOC experience.
Familiarity with blockchain analytics and transaction-screening tools such as Chainalysis and TRM.
Experience supporting a team distributed across time zones.

Salary Range: 140000 to 200000 (Currency: USD) (Pay period: per-year-salary)

Capital markets are undergoing a fundamental shift. Assets that live in fragmented systems and manual workflows are moving onto blockchains -systems designed to move and store value more transparently and efficiently.

While this unlocks more open and programmable financial systems, it also introduces significant complexity. For most users, interacting with this new infrastructure is still too difficult.

Fun builds the infrastructure that powers consumer-facing fintech applications - handling onboarding, account access, and money movement so users can interact with blockchain-based systems as seamlessly as they do with traditional finance.

For fintech builders, Fun provides a best-in-class onboarding and deposit stack that drives conversion and unlocks user growth. We operate at the intersection of financial infrastructure, complex engineering, and product experience.

About the Role

Our Security Lead covers application, cloud and AI security. We're hiring a Senior Corporate Security Engineer to own everything else that keeps Fun safe day to day: the identities, laptops, SaaS tools and vendors every employee and contractor depends on. Some companies call this enterprise security; whatever the name, it's the place where IT and security meet.

You'll be our first dedicated hire in this area, so you'll set the baseline as well as maintain it. We want someone who treats corporate security as an engineering problem. That means configuration in code, access granted by automation instead of by hand, and controls strong enough that a breached vendor or a phished employee is an inconvenience, not an incident.

What you'll own:

Identity and access

Run SSO, MFA and automated provisioning (SCIM) across Google Workspace and the rest of our stack
Build joiner/mover/leaver flows so new hires have the right access on day one and departing people lose it within minutes
Run regular access reviews and keep admin and privileged access to a minimum

Endpoints

Define and enforce macOS baselines through MDM: disk encryption, EDR, OS updates, device compliance
Tie device health to access so an unmanaged or out-of-date laptop can't reach sensitive systems
Address the new risks of AI agents and coding assistants running on employee machines, including what they can read, where data goes and what they're allowed to run

SaaS security

Harden Slack, Notion, Google Workspace, our CRM and the rest of the stack: least privilege, external sharing and guest controls, and data protection guardrails
Find and reduce shadow IT, and keep seats and licenses tight

Vendors and third parties

Run security reviews for new vendors and integrations, and maintain a tiered inventory of the ones we can't operate without
Plan in advance for when a critical vendor is breached or goes down, so we're never improvising

Detection and response

Make sure identity, endpoint and SaaS activity is logged and actionable
Own corporate incidents such as phishing, account takeover and lost devices, and take part in company-wide incident response and blameless postmortems

Compliance and customer trust

Own the corporate and IT controls for SOC 2 and similar frameworks, with evidence collected automatically rather than by screenshot
Help answer enterprise customers' security questionnaires and reviews

Your first 90 days

30 days: You know every identity, device and critical SaaS app we run, and where the gaps are

60 days: SSO, MFA and automated offboarding are complete across the core stack, and every laptop is enrolled in MDM with EDR running

90 days: Core identity and SaaS configuration is managed as code, there's a working vendor review process, and the corporate security roadmap for 2027 is written and agreed

You might be a fit if you have:

5+ years in corporate security, enterprise security or security-minded IT engineering, ideally at a fast-growing startup

Deep hands-on experience with an identity provider (Okta, Entra ID, or Google Workspace as IdP), including SSO, SCIM and conditional access

Experience running macOS fleets securely with an MDM (Jamf, Kandji, Fleet or similar) and EDR

Automation skills: you write Python, Bash or similar against APIs to remove repetitive work

Heavy daily use of AI tools like Claude Code, and good judgment about where they help and where they create risk

Sound, risk-based judgment, and the ability to explain a tradeoff to an engineer, a salesperson or an executive and leave them agreeing

Nice to Have:

Terraform or other config-as-code for identity, MDM or SaaS

Experience at a crypto, fintech or payments company, especially one with real money at stake

Having taken a company through SOC 2 or ISO 27001

Incident response or SOC background

Familiarity with blockchain analytics and transaction screening tools (Chainalysis, TRM)

Experience supporting a team split across time zones

Why Join Us

● Shape the future of payments and programmable money

● Work with bleeding-edge tech in a domain where innovation moves fast

● Join a mission-driven team focused on access, openness, and trust

● Be a key contributor, not just a cog—your work will ship fast and matter

● Collaborate with top-tier protocols, builders, and financial infrastructure providers

Location and Work Environment This role is primarily in-person at our Midtown, NYC headquarters. We work together Monday through Thursday for fast, iterative collaboration and optional WFH Fridays to reset and recharge.

About the Company

Fun.xyz

Cross-chain wallet API for DeFi payments

Fun.xyz provides the API and infrastructure to build cross-chain decentralized wallets on the Odsy blockchain. Its tools give developers wallet APIs and protocols to create secure, interoperable dWallets that can send and receive assets across chains within Odsy. Unlike generic wallet providers, Fun.xyz concentrates on the Odsy Network and offers foundational wallet components and cross-chain infrastructure to help developers deploy DeFi apps. Its goal is to enable a tokenized world with seamless cross-chain wallet experiences, making it easier for businesses to build and run DeFi applications on Odsy.

Company size: 51-200
Company stage: Series A
Total funding: $82.9M
Headquarters: New York City, New York
Founded: 2022

Recently Posted Jobs

Explore more opportunities at Fun.xyz

See more jobs