Senior Software Engineer - Full-Stack JS

Summary

Join Able as a Senior Software Engineer and play a central role in a complex, enterprise-scale project. You will lead feature development from idea to deployment, collaborating closely with product and design teams. Leverage your 10+ years of full-stack JavaScript development experience to drive technical decisions and shape the architecture of a fast-evolving, AI-enabled platform. Translate product requirements into reliable, scalable implementations, integrating external services with attention to security and performance. This is a 6-month, 100% remote contract position within LatAm, requiring strong English communication skills. A contract extension is possible based on performance and client needs.

Requirements

• 10+ years of professional experience in full-stack JavaScript development
• Experience leading engineering efforts or serving as a tech lead on complex, high-scale projects
• Proven track record of designing scalable systems (microservices, distributed architecture)
• Experience integrating payment systems (Stripe, PayPal, etc.,) with strong security practices
• Deep understanding of browser rendering performance and frontend optimization
• Strong grasp of data modeling using PostgreSQL, and familiarity with NoSQL/Redis where appropriate
• Strong verbal and written communication skills in English are a requirement

Responsibilities

• Lead feature development from idea to deployment, collaborating closely with product and design
• Drive technical decisions and help shape the architecture for a fast-evolving, AI-enabled platform
• Translate product requirements into reliable, scalable implementations across the stack
• Operate with a high degree of autonomy—moving quickly from concept to shipping while maintaining code quality
• Integrate external services, including payments and identity providers, with attention to security and performance
• Profile and tune application performance to ensure smooth experiences at scale
• Contribute to planning, estimations, and setting realistic delivery expectations with the team
• Champion clean, testable code and support the team through thoughtful code reviews
• Communicate proactively in a distributed environment and contribute to a culture of continuous improvement

Preferred Qualifications

Experience working with AI/ML platforms, multi-tenant applications, or caching/queueing layers (e.g., Redis, RabbitMQ)