Senior Application Security Engineer

New York City, USA
Full time
Office
Compensation is not specified
Role
Security Engineer
Description

Who are we?

FalconX is a cutting-edge digital asset platform catering to institutions, offering a range of services including trade execution, credit & treasury management, prime offerings, and market making. With a global presence, top-notch technology, and deep liquidity, we have facilitated client transactions totaling $1 trillion in volume. Our suite of products and services adheres to regulations, complies with standards, and is known for its trustworthiness.

We are a collective of skilled engineers, product developers, institutional sales and trading experts, operations professionals, and business strategists. Our team members bring entrepreneurial backgrounds from prominent companies like Google, Apple, Paypal, Citadel, Bridgewater, and Goldman Sachs. Our values revolve around thinking big, achieving bold results, collaborating as one team, iterating swiftly, and embodying an entrepreneurial spirit.

Learning is a priority for us. While achieving outcomes is crucial, we strongly believe that continuous learning from both success and failure drives our ongoing success. In an industry that is ever-evolving, there is a plethora of experiments to engage in, enabling continuous growth and learning together.

Qualifications

  • Seeking an experienced software security architect conversant with secure software development and possessing robust knowledge of DevSecOps architecture.
  • Proficient in secure engineering best practices and adept at proposing solutions to both technical and non-technical stakeholders.
  • Familiar with secure development best practices tailored to various programming languages and frameworks.
  • Skilled in the security tooling landscape and equipped to implement security programs within organizations with complex application architecture.
  • Demonstrates a growth mindset, continually striving for excellence, and focusing on continuous functional improvements.
  • Displays a passion for cybersecurity evidenced through active participation or leadership in industry events like conferences, webinars, Capture the Flag (CTF) competitions, TryHackMe, Bug Bounty programs, submission of CVEs, or personal cybersecurity projects.
  • Possesses a deep understanding of historical, current, and emerging security exploits.
  • Holds a minimum of 8+ years of experience in software engineering, architecture, and software security.
  • Boasts at least 5+ years of prior experience in software security initiatives and/or transformations.
  • Proficient in OWASP Top 10, Dynamic Application Security Testing (DAST), Static Application Security Testing (SAST), API Security Testing Tools, Automated Mobile Testing Tools, BSIMM, OpenSAMM, and Threat Modeling tools.
  • Holds at least one security certification (e.g., CISSP, OSCP, GWEB, CEH, GRTP, or GWEB).
  • Has experience with multiple languages such as Java, Rust, Python, and/or JavaScript.
  • Familiar with identifying and prioritizing vulnerabilities in front-end, APIs, microservices, and containers.
  • Knowledgeable about common build/automation tooling like Jenkins and GIT.

Responsibilities

  • Offer subject matter expertise, strategic roadmaps, and reference architectures for application and product security.
  • Provide thought leadership in areas of security tool automation, optimization, application vulnerability management, and risk reduction strategies.
  • Design comprehensive architectural patterns for secure development standards encompassing front-end, APIs, and mobile.
  • Develop and maintain application security policies, standards, and guidelines, ensuring adherence across projects.
  • Implement strategies to automate software security vulnerability verification throughout the development lifecycle.
  • Collaborate closely with cross-functional teams to identify application vulnerabilities, design secure application architectures, and integrate security measures into development processes.
  • Design architecture for tool integrations and implement tooling within CI/CD pipelines to minimize manual testing and troubleshooting.
  • Lead security engineer and software engineer training related to high-risk security vulnerabilities.
  • Conduct product evaluations for security gaps through threat modeling and penetration testing.

Expected base pay for this role ranges from $164,000 to $215,000 USD, with additional forms of compensation available such as performance-based bonuses, equity, and a competitive benefits package. Actual compensation will be determined based on various factors like skill level, experience, and qualifications.

Inclusivity Statement

FalconX is fully dedicated to fostering a diverse, inclusive, equitable, and safe work environment for all individuals, embracing talent from diverse backgrounds. Applicants of all backgrounds are encouraged to apply for roles within our organization, regardless of not meeting all specified background requirements, skills, or experiences.

As part of our commitment to inclusivity, we understand the limited response options provided in the EEOC survey. While federal regulations require us to use certain language, we encourage you to provide responses that best align with your identity in the voluntary survey questions presented by FalconX.

FalconX is an equal opportunity employer and does not discriminate against individuals based on various legally protected characteristics. Applicants with disabilities may be entitled to reasonable accommodation as per the Americans with Disabilities Act and other applicable laws. Kindly reach out to FalconX’s People team at recruiting@falconx.io for support with the application process if needed.

Skills Required
Avatar
FalconX
Company size
Not specified
Location
India
Description
Not specified

More Full-time Jobs

Show more

Recruiter, Marketer, Advertiser, Business Developer

Part time
Remote
We are building a company and looking for people who want to grow with it
Open roles
- Marketer
- Business Developer
- Recruiter
- Advertiser
Requirements
- Clear natural English communication without translators or AI
- Professional fast and reliable
- Fluent in your native language
If you want to be part of something early and actually make an impact — reach out
Payment in Crypto
500-1,000
Monthly
See details

Junior / Middle Metaverse Developer (Unity / Web3 / VR)

Manzhouli, China
Manzhouli, China
Full time
Remote
We are looking for a Metaverse Developer to help build interactive virtual environments and immersive digital experiences. The role involves developing 3D worlds, integrating Web3 technologies, and working with modern tools for real-time applications.
You will work with Unity, WebGL, and blockchain technologies to create engaging metaverse features and optimize them for performance across different devices. The developer will collaborate with designers and backend engineers to deliver scalable and stable products.
Requirements include experience with Unity and C#, understanding of 3D development, Web3 or blockchain basics, and familiarity with Git and API integration. Experience with VR/AR, NFTs, or multiplayer systems is a plus.
We offer remote work, flexible hours, crypto payments, and the opportunity to build innovative metaverse products.
Payment in Crypto
1,500-3,500
Monthly
See details

Web3 Fullstack Developer

Part time
Remote
🌐 About Us
Neonflick is a tech organization specializing in Web3 development.
We believe Web3 solutions are not as popular as they could be — mainly due to complexity. Our mission is to simplify the user experience and make decentralized technology more accessible and easy to use for everyone.
🚀 About the Role
We are looking for a Web3 Fullstack Developer who is passionate about decentralized technologies and excited to contribute to building meaningful Web3 products. You will work on developing new products, improving existing ones, and fixing bugs, all while proposing innovative ideas to enhance our platform.
🔹 Responsibilities
Develop functional and user-friendly Web3 products
Improve and optimize existing products and features
Identify and fix bugs or issues in the system
Propose and implement new ideas for product development
Collaborate with the team to ensure high-quality software delivery
🔹 Requirements
Strong interest in Web3 / blockchain / decentralized technologies
Fullstack development experience (frontend + backend)
Experience with smart contracts and decentralized frameworks is a plus
Problem-solving skills and attention to detail
Ability to work independently and proactively
🔹 What You Get
Early-stage involvement in a Web3 tech organization
Influence over product development and feature design
Opportunity to build experience and a portfolio in the Web3 space
Potential long-term collaboration and future compensation as the project grows
A chance to contribute to making Web3 simpler and more accessible
⚠️ Important
This is an unpaid position. We are looking for someone motivated by vision, learning, and long-term impact rather than immediate salary.
If you are passionate about Web3 and building meaningful decentralized products, we’d love to hear from you.

Senior Blockchain Developer - Ethereum/PulseChain - GAM3S.GG

Lisbon, Portugal
Lisbon, Portugal
Full time
Remote
About the Job
We're looking for a Senior Blockchain Developer with strong Ethereum/PulseChain smart contract experience to work on our DeFi/GameFi platform. You'll be building and maintaining betting contracts, yield farming mechanisms, token swap systems, and Web3 frontend integrations for our decentralized application on PulseChain.
Key Responsibilities
Smart Contract Development
System Architecture & Integration
Frontend Web3 Integration
Security & Compliance
Performance & Monitoring
Required Technical Skills
Blockchain Expertise
Frontend Web3 Development
Development Tools
Integration & Tools
Payment in Crypto
10,417
Monthly
See details

Looking for a blockchain developer

Whiteman Air Force Base, USA
Whiteman Air Force Base, USA
Full time
Remote
We are looking for a skilled Full-Stack Blockchain Developer to help maintain, improve, and extend the RaiseHive platform. This role involves working across the frontend, backend, and smart contract layers to ensure a stable, secure, and scalable Web3 application.
The ideal candidate has hands-on experience with React, Node.js, Ethereum smart contracts, and real-world Web3 integrations.
Framework: React 18.2 (Vite 3)
Styling: Tailwind CSS 3.4, NextUI
Animations: Framer Motion
Web3: Thirdweb SDK v4, Ethers.js v5
Routing: React Router DOM v6
State Management: React Context API
Libraries: React Markdown, React Image Gallery, Replyke (comments), React Toastify
Runtime: Node.js
Framework: Express.js
Database: MongoDB Atlas (Mongoose ODM)
Email: Nodemailer
Scheduling: Node-cron
Logging: Pino
Network: Ethereum
Smart Contracts: Solidity ^0.8.19
Development Tools: Hardhat
Libraries: OpenZeppelin, Thirdweb Contracts
Wallet Integration: MetaMask
Frontend
Strong proficiency in React (hooks, context, routing)
Experience with Vite or modern build tools
Solid knowledge of Tailwind CSS and responsive design
Experience using component libraries (NextUI, Material UI, etc.)
Backend
Strong experience with Node.js and Express
Proficiency with MongoDB and Mongoose
REST API design and implementation
Environment configuration and deployment awareness
Blockchain & Web3
Hands-on Ethereum development experience
Solidity smart contract development
Experience with Ethers.js / Thirdweb SDK
Understanding of smart contract security and gas optimization
MetaMask wallet integration and transaction handling
General
JavaScript (ES6+)
Git version control
Async programming and debugging skills
Strong problem-solving ability
Payment in Crypto
125
Monthly
See details