Senior React + Node Engineer (Financial background) - Remote - USA

FullStack Labs

$90K — $130K *
US-AnywhereRemote in Oklahoma City, OK
Finance & Insurance
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of professional software engineering experience
  • Advanced English proficiency
  • Bachelor's degree in a relevant field
  • Expertise in Node.js (versions 18-22)
  • Proficient in React including hooks and state management (Redux/Redux Saga)
  • Experienced in financial data reconciliation and programmatic reporting
  • Proficient in microservices and distributed systems design
  • Extensive experience with PostgreSQL and advanced SQL query optimization.
  • Hands-on experience with AWS services and containerization using Docker
  • Experience with CI/CD pipelines and testing discipline.

Responsibilities

  • Integrate into client teams for team augmentation or build products collaboratively
  • Design, build, and deliver full-stack applications for clients
  • Maintain financial data reconciliation systems and ensure ledger accuracy
  • Develop REST APIs using frameworks like Koa.js or Express
  • Implement authentication systems and manage feature flags effectively
  • Conduct performance testing and use APM tools for monitoring
  • Contribute to libraries and tackle complex technical challenges.

Benefits

  • 100% remote work
  • Opportunity to work with leading startups and Fortune 500 companies
  • Health, dental, and vision insurance
  • 401(k) with 4% match
  • Paid time off including vacation and sick leave
  • Continuing education opportunities for skill development
  • Ample career advancement opportunities.
Full Job Description
The Position

We're looking to hire a Senior React + Node Engineer (Financial background) to join our team. You'll work with our incredible clients in one of two ways:

  • Team Augmentation: You will integrate directly into our client's team and work alongside their existing designers and engineers daily.
  • Design & Build: You will work on a FullStack product team to build and deliver a product to our clients.


What We Are Looking For

  • 5+ years of professional software engineering experience.
  • Advanced English is required.
  • Successful completion of a four-year college degree is required.
  • Expertise in Node.js (specifically versions 18 through 22).
  • Proficient in React, including hooks, state management (Redux/Redux Saga), and component architecture.
  • Proven experience in designing and maintaining financial data reconciliation systems, with a focus on ledger accuracy, complex data aggregation, and the programmatic generation of audit-ready reports.
  • Track record of designing and maintaining microservices and distributed systems.
  • Extensive experience with PostgreSQL, including advanced SQL, schema design, and query optimization.
  • Well-versed in REST API development using modern frameworks like Koa.js or Express.
  • Deep experience in ORM tools such as Objection.js, Sequelize, or TypeORM.
  • Hands-on experience with AWS services (S3, SQS, RDS, EC2).
  • Solid background in containerization using Docker and Docker Compose.
  • Demonstrated experience with CI/CD pipelines (CircleCI, GitHub Actions) and GitOps practices.
  • Skilled at implementing authentication systems such as JWT, OAuth, or MSAL (Azure AD).
  • Strong history of testing discipline using Jest, Mocha, or Supertest.
  • Practical experience with APM tools like DataDog or New Relic and feature flag management (LaunchDarkly).
  • Solid understanding of financial or accounting systems (ledgers, reconciliation, etc.) is a plus.
  • Ability to work through new and difficult issues and contribute to libraries as needed.
  • Ability to create and maintain continuous integration and delivery of applications.
  • Forensic attention to detail.
  • A positive mindset and a can-do attitude.
  • Experience working on Agile/Scrum teams.
  • Meaningful experience working on large, complex systems (50k+ lines of code).
  • Ability to take extreme ownership over your work. Every day is a challenge to ensure you are performing to the expectations you and your team have agreed upon.
  • Ability to identify with the goals of FullStack's clients, and dedicate yourself to delivering on the commitments you and your team make to them.
  • Ability to consistently work 40 hours per week.


What We Offer

  • Competitive Salary.
  • Paid Time Off (vacation, sick leave, maternity and paternity leave, holidays).
  • 100% remote work.
  • The ability to work with leading startups and Fortune 500 companies.
  • Health, dental, and vision insurance.
  • 401(k) w/ 4% match.
  • Ample opportunity for career advancement.
  • Continuing education opportunities.


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