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FusionHit
Development 2h ago

Senior Fullstack Software Engineers (Frontend-focused)

FusionHit
ArgentinaArgentina
BrazilBrazil
ColombiaColombia
PeruPeru
Full-time
Not Disclosed
Senior-Level

Job Description

Key Skills Required

Master these to land this role

Node.js40mFree Trial ✨
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Backend42mFree Trial ✨
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React57mFree Trial ✨
Start 10-Day Free Trial
Frontend1h 2mFree Trial ✨
Start 10-Day Free Trial
Next.js1h 32mFree Trial ✨
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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.

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FusionHit (operating at fusionhit.com) is a nearshore software development company engineered for US-based businesses seeking high-quality, cost-effective technology solutions. Founded in 2010 and headquartered in New York, FusionHit specializes in building custom software and AI-driven applications through senior engineering teams across Latin America, particularly in Costa Rica. The company addresses the challenge of accessing top-tier tech talent without the overhead of in-house teams or the complexities of offshore outsourcing. Under the hood, FusionHit leverages nearshore development centers to provide agile, scalable, and culturally aligned engineering resources. This allows clients—ranging from software vendors to enterprise technology teams—to accelerate product development, reduce time-to-market, and maintain flexibility in scaling their tech workforce. With a focus on well-being, FusionHit offers remote work flexibility, wellness programs, and private medical insurance to its employees, ensuring a motivated and productive team.

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