Senior React/TypeScript + Node.js Engineer

Important Information

Role: Senior Software Engineer – Fullstack
Tech Stack: TypeScript, React, Node.js, AWS
Location: Argentina

Job Summary

We are seeking a highly skilled Senior Fullstack Engineer with deep experience in React, TypeScript, and Node.js (19730) to build end-to-end product features in a modern, cloud‑based environment. This role requires strong technical expertise, a “pixel‑perfect” mindset for UI, and the ability to design scalable backend services while collaborating across functional teams.

You will work across the full stack—from UI components to backend APIs—delivering high-quality, secure, and production-ready software in an AWS environment.

Responsibilities and Duties

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Build end‑to‑end product features using TypeScript, React, and Node.js, delivering UI, backend logic, and production-ready deployments.

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Translate UI/UX designs into pixel-perfect, accessible, and responsive interfaces that elevate the customer experience.

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Develop, consume, and maintain RESTful APIs to ensure seamless communication across the application stack.

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Ensure strong data integrity, security, and performance across front‑end and back‑end systems.

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Diagnose and resolve performance bottlenecks, reliability issues, and UX inconsistencies in a proactive and iterative manner.

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Write and maintain unit, integration, and end‑to‑end tests with tools like Vitest, Mocha/Chai, or Playwright.

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Support and improve CI/CD workflows, including automation of testing and deployment pipelines.

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Communicate clearly about technical decisions, trade-offs, and implementation strategies to cross‑functional teams.

Qualifications and Skills

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5+ years of proven experience as a Fullstack Developer building web applications using TypeScript, React, and Node.js.

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Strong experience working within an AWS environment.

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Experience designing and implementing REST APIs.

• English conversational skills

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A strong “pixel-perfect” mindset with exceptional attention to UI detail (spacing, states, responsiveness, accessibility).

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Comfort with modern testing frameworks such as Jest, Mocha/Chai, Cypress, or Playwright.

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Advanced understanding of:

• API design

• Data modeling fundamentals

• Performance optimization

• Reliability patterns

• Security best practices

Ability to break down ambiguous problems, propose sound technical solutions, and execute effectively.

Nice to Have

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Experience with Nest.js and modern frontend best practices.

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Familiarity with AI‑powered development tools such as Copilot, Claude Code, Codex, Cursor, or similar.

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Experience working on Cybersecurity projects or platforms.

About Encora

Encora is a global company that offers Software and Digital Engineering solutions. Our practices include Cloud Services, Product Engineering & Application Modernization, Data & Analytics, Digital Experience & Design Services, DevSecOps, Cybersecurity, Quality Engineering, AI & LLM Engineering, among others.

At Encora, we hire professionals based solely on their skills and do not discriminate based on age, disability, religion, gender, sexual orientation, socioeconomic status, or nationality.