Senior Software Engineer, Full Stack (Node.JS, React.JS, AWS)

Remote Full-time
Calling All Upstarters!

SENIOR FULL-STACK ENGINEER WANTED!

We are Upstart 13. We are humble, hungry, and competent people who are radically changing the expectation and experience of outsourcing for all participants by challenging barriers that create inequality and by bringing down borders in technology for people everywhere. We’re all about delivering value and doing big things. We have become a game-changer for teams around the world who look to Upstart’s services as a differentiator.
Job Description:

We’re looking for a Senior Full Stack Developer based in Latam to join our international team. In this position, you will play a critical role in delivering scalable and maintainable software solutions for a US-based client. You’ll work across the backend and frontend stack to implement new features, troubleshoot issues, and improve existing systems. This role requires someone who is technically strong, takes initiative, and consistently delivers high-quality work while collaborating with cross-functional teams.
Responsibilities:
• Implement and maintain scalable features using Node.js and React.
• Collaborate closely with product managers and other developers to clarify requirements and deliver solutions.
• Ensure code quality through best practices like testing, code reviews, and documentation.
• Investigate and resolve bugs, performance bottlenecks, and edge cases in both frontend and backend systems.
• Take ownership of technical decisions and actively contribute to architectural discussions.
• Work independently and efficiently in a remote environment with partial time zone overlap (EST).
Qualifications:

Technical skills:
• 6+ years of professional experience in software development, with a strong focus on JavaScript/TypeScript.
• Proven expertise in Node.js for backend development in production environments.
• Proficiency in PHP, including experience with WordPress.
• Solid experience with AWS services, including EC2, Lambda Functions, API Gateway, SQS, and Elastic Beanstalk.
• Strong understanding of relational databases, particularly PostgreSQL and MySQL.
• Hands-on experience with React or Next.js for frontend development.
• Familiarity with CMS platforms such as Strapi, Netlify, Contenfull, or Sanity.

Soft skills:
• Comfortable working in a remote, collaborative Agile team.
• Excellent communication skills.
• Self-motivated with high standards of accountability.
• Strong problem-solving mindset and technical curiosity.

Bonus skills:
• Experience with CI/CD pipelines and deployment workflows.
• Familiarity with RESTful APIs and microservices architecture.
• Experience with version control (GitHub), Jira, and cloud infrastructure management.
Why Upstart13?
• We put people first at Upstart 13! We believe the world is filled with amazing people and we are willing to go to great lengths to seek out others who share our values to join our cause bringing down borders in technology for people everywhere.
• We develop leaders at Upstart 13, we focus on what matters to do meaningful work, we own our shit, we stay curious, and we understand responsibility leads to giving. We do big things, together!

Perks:
• Job-type: long-term, full-time job.
• Fully remote.
• USD competitive salary.
• 20+ Paid time off days.

Are you ready to join our cause? Be sure to ask, “why 13?”



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