Fullstack Software Engineer jobs in United States
cer-icon
Apply on Employer Site
company-logo

Confidential ยท 16 hours ago

Fullstack Software Engineer

positionNew York, United States
timeFull-time
remoteOnsite
senioritySenior Level
date5+ years exp

Confidential is a well-funded, early-stage startup on a mission to revolutionize B2B payments. They are seeking a Fullstack Software Engineer to join their Platform team, responsible for designing, building, and maintaining web applications and APIs that support large-scale financial transactions.

Marketing & Advertising

Responsibilities

Frontend Development: Build and maintain modern, responsive, and secure web applications using ReactJS with TypeScript, focusing on performance and accessibility
UI Frameworks: Leverage React-based libraries to create enterprise-grade UI components that meet financial industry standards
Backend Development: Design, build, and maintain RESTful APIs and GraphQL endpoints
Database & Data Management: Design efficient data models and work with SQL and NoSQL databases to securely handle transactional and analytical workloads
Real-time Systems: Implement websockets, message queues, and event-driven architectures to support real-time payment processing and notifications
Testing & Quality: Write comprehensive tests using Jest, Cypress, or Playwright to ensure system stability, and participate in code reviews to maintain high code quality standards
Web Security: In compliance with financial regulations, apply advanced security practices, including CSP implementation, secure coding principles, data encryption, and vulnerability assessment
Performance Optimization: Implement data compression, caching strategies, CDN optimization, and monitoring to enhance speed, scalability, and system observability
Collaboration: Work closely with Product, Design, and Platform teams in an agile environment to deliver features that delight customers while meeting compliance and reliability standards
Mentorship: Participate in code reviews and knowledge sharing, and mentor junior developers as the team grows

Qualification

ReactJSNode.jsSQLNoSQLTypeScriptRESTful APIsGraphQLAgile DevelopmentTesting FrameworksSystem DesignFintech ExperienceReal-time SystemsEnterprise UI/UXProblem-SolvingCommunication

Required

5+ years of software engineering experience, including significant fullstack development focusing on frontend applications and backend API development
Strong proficiency in ReactJS and modern JavaScript/TypeScript
Solid experience with backend frameworks (Node.js, Java/Spring, or similar)
Hands-on experience with both SQL and NoSQL databases
Understanding of data modeling and database optimization
Hands-on experience with Jest, Cypress, Playwright, or other modern testing frameworks, focusing on test-driven development
Experience designing scalable web applications, microservices architecture, and API integration patterns
Experience with Scrum/Agile methodologies, sprint planning, and collaborative development practices
Ability to debug and optimize for performance, security, and reliability
Excellent communication skills in a collaborative, fast-paced environment

Preferred

Background in fintech, banking APIs, payment processing, or commercial payments systems
Experience with websockets and real-time data processing
Exposure to enterprise-grade UI/UX standards in regulated industries

Benefits

Learning & Development
Team Culture

Company

Confidential

twitter
company-logo
This page is owned and operated by JAF HOLDINGS INC. All rights reserved 2025. jafholdingsinc.com
location
Silicon Valley, California US, US
people-size51-200 employees

Funding

Current Stage
Growth Stage

Leadership Team

leader-logo
Roshan Syed
Global Talent Partner
linkedin
Company data provided by crunchbase