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Senior Backend Engineer Node.js Python

Stealth Startup

HybridHybrid

Original Job Summary

About Us

We’re a U.S.-based SaaS startup in stealth mode, building a platform that automates complex data and compliance workflows for global enterprises. Our mission is to bring speed, accuracy, and intelligence to outdated international trade processes.

Role Overview

The Senior Backend Engineer Node.js Python will join our core engineering team in Argentina. You will work directly with the founder and a fellow backend engineer to design, build, and scale backend systems powering our platform. This role is senior enough to lead major projects while thriving in a fast-paced startup environment.

What You’ll Do

  • Design, build, and maintain scalable backend systems using Node.js (NestJS) and Python microservices.
  • Architect and implement APIs, background services, and integrations.
  • Deploy, monitor, and scale systems using AWS (Lambda, ECS, S3, CloudWatch).
  • Manage MongoDB Atlas for high-volume data models.
  • Collaborate with frontend, product, and ops teams to ship features fast and reliably.
  • Optimize performance, improve reliability, and ensure high code quality.
  • Contribute to technical decisions and influence product direction.

Requirements

  • 4+ years of backend engineering experience.
  • Strong experience with Node.js (NestJS or Express).
  • Proficiency with Python for automation or data processing.
  • Hands-on experience with AWS and MongoDB.
  • Excellent written and spoken English communication skills.
  • Comfortable in a lean, fast-paced startup environment.

Nice to Have

  • Experience with API integrations, data pipelines, or fintech/logistics systems.
  • Familiarity with CI/CD pipelines, Docker, or serverless frameworks.
  • Previous experience in a remote or early-stage U.S. startup.

What We Offer

  • Full-time remote position (Argentina preferred).
  • Competitive USD compensation ($4,000–$5,000 per month).
  • Direct work with the founder to shape a high-impact SaaS platform.
  • Autonomy, ownership, and rapid execution in a dynamic team.

Key skills/competency

  • Node.js
  • Python
  • AWS
  • MongoDB
  • APIs
  • Microservices
  • SaaS
  • Automation
  • Backend
  • Scalability

How to Get Hired at Stealth Startup

🎯 Tips for Getting Hired

  • Research Stealth Startup's culture: Explore mission, values, and recent achievements.
  • Customize your resume: Highlight Node.js, Python, AWS projects.
  • Emphasize startup experience: Show agility and innovation in past roles.
  • Prepare for technical interviews: Practice coding and system design problems.

📝 Interview Preparation Advice

Technical Preparation

Review Node.js and Python frameworks.
Practice AWS deployment and monitoring tasks.
Study MongoDB Atlas operations.
Develop API integration projects.

Behavioral Questions

Describe managing tight deadlines in startups.
Explain your teamwork and communication style.
Detail handling project challenges effectively.
Share a time when you led innovation.