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# Senior Fullstack Software Engineer (Frontend-focused)

- **Company:** FUSIONHIT INC
- **Location:** Latin America, United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Apple IOS, Unit Testing, Software Quality, Continuous Integration, DevOps, Monitoring of Systems, PostgreSQL, Performance Tuning, Next.js, Software Engineering, Strategies of Testing, TypeScript, Datadog, ReactJS, Delivery Pipeline, Spring-boot, Backend, Gitlab, Vue.js, AngularJS, Material UI, Information Technology, Playwright, Front End Software Development, Restful APIs, Legacy Systems
- **Published:** August 30, 2026
- **Apply:** https://arc.dev/remote-jobs/j/redirect/pg4daml0d5

## About the Role

* BS/MS in Computer Science, Software Engineering, or related field
 * 6+ years of experience in Fullstack/Frontend Engineering
 * 5+ years of hands-on experience with modern JS/TS frontend frameworks (React, Next.js, Angular, or Vue) - our stack spans multiple frameworks across projects
 * Advanced expertise in TypeScript, including complex type modeling and scalable architecture patterns
 * Experience designing and maintaining shared component libraries and design systems
 * Working knowledge of Java/Spring Boot backend services and Postgres-backed REST APIs, sufficient to integrate and troubleshoot end-to-end
 * Strong understanding of phased modernization strategies over legacy backend systems
 * Deep experience with Playwright (E2E) and Jest (unit testing)
 * Experience managing CI/CD pipelines in GitLab
 * Experience implementing monitoring and observability strategies using Datadog
 * Retail, store operations, or supply chain system experience (strong plus)
 * Comfortable engaging with stakeholders and incorporating real-world user feedback
 * Bonus: Android and/or iOS frontend experience
 * Excellent communication skills in English (C1 preferred, strong B2 may be considered)

## Description

You will play a key role in transforming legacy platforms into scalable, maintainable, and performance-driven applications while collaborating closely with backend engineers building Java/Spring Boot services, DevOps, and product stakeholders., * Lead frontend architecture decisions and modernization strategy across multiple JS framework stacks

 * Design scalable UI solutions and integrate with Java/Spring Boot APIs
 * Drive best practices in code quality, testing, and CI/CD automation
 * Collaborate cross-functionally with backend, DevOps, and product teams
 * Mentor mid-level engineers and promote engineering excellence
 * Define testing strategies using Playwright and Jest
 * Ensure performance optimization and monitoring using Datadog
 * Lead phased migration from legacy systems to modern frontend architecture
 * Incorporate user feedback and real-world retail workflows into UI improvements


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