Remote Fintech Senior Full-Stack Engineer, AI-Driven

Resourceful Talent Group

Warszawa

Remote

PLN 550,000 - 707,000

Full time

14 days+

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Job summary

Resourceful Talent Group is seeking a Senior Full-Stack Engineer for a fully remote role operating on EST hours. You will leverage strong React/TypeScript frontend and Node.js/TypeScript backend expertise to build production-grade applications in a fast-paced fintech environment.

The role requires 7+ years of experience, true full-stack capability, and hands-on PostgreSQL with migrations. Prior AWS production experience (ECS/Fargate, S3, CloudFront) and comfort with AI coding tools like Claude

Qualifications

7+ years of professional software engineering experience.
Strong, recent React, Node.js, and TypeScript experience.
True full-stack expertise; frontend-only candidates will not be considered.
Hands-on PostgreSQL experience, including migrations and indexing.
Production experience with AWS; ECS/Fargate, containers, S3, and CloudFront 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 preferred (ACH, reconciliation, compliance, idempotency).

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.