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Miami, FL
Posted · 29.09.2026
LinkedIn Jobs US

# Senior Full Stack Software Engineer

BEL USA LLC

We are seeking a highly skilled and solutions-driven Senior Full-Stack Software Engineer to design, build, and maintain scalable, high-quality software systems that power our growing business. This engineer will work across the full technology stack—front end, back end, APIs, and databases—to deliver secure, reliable features for both internal and external users. As a key member of the engineering team, the Senior Full-Stack Software Engineer will partner closely with Product, Design, and Engineering leadership to shape technical direction, enhance platform performance, and uphold modern development practices. This role will also contribute to engineering standards, developer tooling, and continuous improvement efforts that strengthen our overall technology foundation. Essential Functions: ( The reason this job exists is to perform these functions. These functions are performed regularly, seriously impacts other jobs, and there are a limited number of employees whose performance of the function can be distributed.) Design and build modern eCommerce services within a scalable, secure, AI-driven platform. Develop high-quality front-end interfaces using React or similar frameworks. Implement and maintain APIs, data models, microservices, and background workers. Design and optimize SQL/NoSQL schemas, queries, and overall data performance. Own the full development lifecycle: design, coding, code reviews, testing, deployment, and documentation. Write clean, maintainable, well-tested code aligned with engineering standards. Instrument applications with logging, metrics, tracing, and contribute to reliable alerting and runbooks. Build with security, privacy, and performance in mind from the start. Participate in on-call rotations and drive reliability improvements through post-incident reviews. Collaborate effectively with cross-functional teams and contribute to a strong engineering and review culture. Essential Qualifications: (To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the competencies (minimum knowledge, skill, and ability) required. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.) Education/Certification Bachelor’s degree in computer science or related field. Experience Required Minimum of 5 years of professional software engineering experience, including ownership of production systems. Hands-on experience with Node.js, React, and TypeScript, including component architecture, state management, data-fetching patterns, forms, accessibility, profiling, and testing (e.g., React Testing Library, Playwright). Experience designing and implementing APIs, asynchronous patterns, and scalable back-end services. Solid foundation in web fundamentals: HTTP, caching, cookies, security headers/CSP, OAuth/OIDC, secure coding. Strong experience with SQL and NoSQL database design, migrations, and performance optimization. Demonstrated ability to ship reliable, observable, maintainable software and collaborate with Product and Design teams. Only applicants authorized to work in the U.S. need apply. BEL USA does not sponsor applicants or employees for work authorization, e.g., H-1B, or for permanent residence. BEL USA is proud to be a certified Great Place to Work and Top Workplace! 80% of our employees think BEL is a great place to work. Grow your career with BEL, a company that puts its people first. Working at Bel USA, LLC | Great Place To Work®

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