Full TimeInformation Technology Apply by August 8, 2026

Senior Full Stack Engineer (New Business)

Toptal
Gy·Argentina
Posted on June 13, 2026

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Description

This is a Full Remote job, available from South America and Europe.

About Toptal:

Toptal is a global network of top talent in business, design, and technology that enables companies to scale their teams, on-demand. With $200+ million in annual revenue and team members based around the globe, Toptal is the world’s largest fully remote workforce.

We take the best elements of virtual teams and combine them with a support structure that encourages innovation, social interaction, and fun. We see no borders, move at a fast pace, and are never afraid to break the mold.

Job Summary:

We are building a robust Data Annotation Platform designed to be the backbone of AI development. Instead of clients managing their own labeling infrastructure, they use our platform to drop massive datasets—100k images, audio clips, PDFs, or video segments—and define the questions they need answered. Whether it’s timestamping topics in a video or auditing subtitles, we build the tools that make high-quality data possible.

Our stack is focused heavily on Next.js, Node, and Supabase. We’re looking for someone who lives and breathes the JS ecosystem and wants to solve the unique UI/UX and architectural challenges that come with handling diverse media at scale.

This is a remote position. We do not offer visa sponsorship or assistance. Resumes and communication must be submitted in English.

Responsibilities:

  • Build & Scale: Design and maintain reliable Node & React (Next.js) code for a high-traffic data platform.
  • Technical Leadership: Own features from the whiteboard to production. You’ll create proposals and architectural designs for new platform components.
  • Collaboration: Work closely with cross-functional teams to ensure seamless integration and delivery of features.
  • Problem-Solving: Identify and resolve complex technical issues, and implement solutions that meet the needs of the business.

Requirements

  • 5+ years of experience in full-stack development with a focus on JavaScript.
  • Expert-level knowledge of Node.js, React, and Next.js.
  • Experience with Supabase and PostgreSQL.
  • Strong understanding of computer science fundamentals, including algorithms and data structures.
  • Excellent problem-solving skills and ability to debug complex issues.
  • Strong communication and collaboration skills, with the ability to work effectively in a remote team.
Interested in this position? Submit your application to Toptal before the deadline.
🚀 Apply for this Job
DEADLINE: August 8, 2026

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