Full-Stack JavaScript Engineer with 4+ years of experience building and maintaining production-grade web applications. Strong focus on backend development using Node.js, NestJS, and PostgreSQL, with hands-on ownership of API design, refactoring, performance optimization, and production issue resolution. Experienced in payment systems (Stripe, POS terminals, Klarna), CI/CD pipelines, and cloud infrastructure on AWS. Comfortable working across the entire stack, mentoring teammates, and collaborating closely with product and business stakeholders.…Full-Stack JavaScript Engineer with 4+ years of experience building and maintaining production-grade web applications. Strong focus on backend development using Node.js, NestJS, and PostgreSQL, with hands-on ownership of API design, refactoring, performance optimization, and production issue resolution. Experienced in payment systems (Stripe, POS terminals, Klarna), CI/CD pipelines, and cloud infrastructure on AWS. Comfortable working across the entire stack, mentoring teammates, and collaborating closely with product and business stakeholders.WWWW…