Senior Fullstack Software Engineer (Frontend-focused)

FusionHit; United States; Remote; USD 140,000 - 200,000; Full time

Benefits offered by this job

Great Place to Work

Work from home

Development Courses & Certifications

Flexible Schedule

Sick Days

Birthday Off

Extra Days for Special Occasions

Team Building Meal Reimbursement

Equipment Granted

Monthly Recognitions

High Impact Committees

Job summary

FusionHit is seeking a Senior Fullstack Software Engineer (Frontend-focused) to lead UI modernization for enterprise retail and supply chain systems. You will drive architecture decisions and raise frontend engineering standards across teams while collaborating with backend developers.

This role emphasizes transforming legacy platforms into scalable, high-performance applications, with deep React/TS experience, Playwright/Jest testing, and Datadog monitoring.

Qualifications

• 6+ years in fullstack/frontend engineering.
• 5+ years with modern JS/TS frameworks (React/Next/Angular/Vue).
• Strong TypeScript for complex types and scalable patterns.
• Experience with Playwright and Jest testing.

Responsibilities

• Lead frontend architecture decisions and modernization across multiple JS frameworks.
• Design scalable UI solutions integrated with Java/Spring Boot APIs.
• Drive code quality, tests, and CI/CD automation.
• Collaborate with backend, DevOps and product teams.

Skills

Fullstack frontend

TypeScript expertise

JS frameworks

CI/CD GitLab

Observability Datadog

Retail experience

Frontend mentoring

English communication

Education

BS/MS in CS

Tools

Playwright

Jest

GitLab

Datadog

Job description

We are looking for Senior Fullstack Software Engineers (Frontend-focused) to join FusionHit’s fast-paced, high-impact environment supporting. In this role, you will lead UI modernization initiatives for enterprise retail and supply chain systems, driving architecture decisions and elevating frontend engineering standards across teams, while remaining comfortable working across the stack.

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.

This project focuses on modernizing enterprise-level retail systems that directly support business-critical store and supply chain operations.

Location: Remote - Latin America (must reside and have work authorization in LatAm)

Availability: Significant overlap with Mountain Standard Time (MST)

Requirements

• 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).

Key Responsibilities

• 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.

Benefits

• Certified as a Great Place to Work, offering a supportive and inclusive work culture.
• Work from home position.
• Personal and Professional Development Courses & Certifications.
• Flexible Schedule.
• 3 Sick Days per year.
• Birthday Off.
• Extra Days for Special Occasions.
• Team Building Meal Reimbursement.
• Equipment Granted.
• Monthly Recognitions.
• High Impact Committees.