Senior Full-Stack Engineer (React/Node.js)

Resourceful Talent Group; Polska; Hybrid; PLN 220,000 - 340,000; Full time

Job summary

Resourceful Talent Group is recruiting a Senior Full-Stack Engineer for a long-term, fully remote role. You will work on React/TypeScript frontend and Node.js/TypeScript backend systems in a fintech environment, supporting EST hours.

You will leverage AI coding tools and participate in designing scalable, reliable services while communicating technical decisions effectively. Strong English and Russian communication is valued.

Qualifications

• 7+ years of professional software engineering experience.
• Strong React/TypeScript frontend and Node.js/TypeScript backend experience.
• Fintech or payments knowledge is a plus.

Responsibilities

• Build and maintain production-grade React, Node.js, and TypeScript applications.
• Develop backend services, APIs, integrations, and server-side validation.
• Manage PostgreSQL schemas, migrations, queries, indexes, and performance.
• Write unit, integration, and end-to-end tests.
• Design scalable systems using caching, queues, and background jobs.
• Collaborate with the team and communicate technical decisions clearly.

Skills

React

TypeScript

Node.js

AWS

PostgreSQL

Testing

System design

English

Russian

Tools

AWS

Docker

ECS/Fargate

S3

CloudFront

CI/CD

Job description

Senior Full-Stack Engineer

About the Role

We are looking for Senior Full-Stack Engineer with strong experience across React/TypeScript frontend development and Node.js/TypeScript backend systems. This is a long-term, fully remote opportunity within a fast-moving fintech environment, working EST hours.

The ideal candidate is proactive, asks thoughtful questions, and builds reliable, maintainable systems. The team actively uses AI coding tools such as Claude, so candidates must be comfortable using them and explaining their technical decisions.

Responsibilities

• Build and maintain production-grade React, Node.js, and TypeScript applications.

• Develop backend services, APIs, integrations, and server-side validation.

• Manage PostgreSQL schemas, migrations, queries, indexes, and performance.

• Write unit, integration, and end-to-end tests.

• Design scalable systems using caching, queues, and background jobs.

• Improve legacy code and contribute to ongoing technical remediation.

• Collaborate with the team and clearly communicate technical decisions.

• 7+ years of professional software engineering experience.

• Strong, recent React, Node.js, and TypeScript experience.

• True full-stack expertise; primarily frontend candidates will not be considered.

• Hands-on PostgreSQL experience, including migrations and indexing.

• Production experience with AWS; ECS/Fargate, containers, S3, and CloudFront are preferred.

• Experience with system design, third-party integrations, and end-to-end testing.

• Comfortable using AI coding tools such as Claude.

• Strong English and Russian communication skills.

• Fintech or payments experience is preferred, including knowledge of ACH, reconciliation, compliance, and idempotency.