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

Note: The job is a remote job and is open to candidates in USA. FullStack is one of the fastest-growing software consultancy companies in the Americas, delivering transformational digital solutions to top global companies and Silicon Valley startups. They are seeking a Senior React + Node Engineer with a financial background to integrate into client teams or work on FullStack product teams, focusing on building and delivering software solutions.

Responsibilities

• You will integrate directly into our client's team and work alongside their existing designers and engineers daily
• You will work on a FullStack product team to build and deliver a product to our clients

Skills

• 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
• We're Seeking Engineers Who Are AI-enthusiastic In Their Workflow. Professional Experience Or Personal Project Work With The Following Is a Significant Plus
• Cursor, Windsurf, or Google Antigravity
• Claude Code, Gemini CLI, Codex, or Copilot CLI

Benefits

• Competitive Salary.
• Paid Time Off (vacation, sick leave. parental leave, and 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.

Company Overview

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