Sr Frontend Developer
Location: Pilar, Buenos Aires Province, Argentina
Department: Workana B2B LATAM
Workplace: hybrid
Description
We are seeking a Senior Frontend Developer to build and maintain complex, high‑performance web applications. This role is strongly hands‑on, focused on delivering high‑quality frontend code, solving complex UI and data challenges, and contributing to a modern, scalable frontend architecture. You will work closely with product, design, and backend teams, contributing through code, technical expertise, and best practices rather than formal people management.
This role is critical to the evolution of our product, user experience, and the strategic direction of the frontend platform.
Requirements
6+ years of professional frontend development experience.
Strong command of TypeScript, React, and Next.js.
Deep familiarity with data fetching and state management libraries (React Query, Zustand).
Experience integrating complex authentication flows (SSO, sessions, JWT).
Solid experience with automated testing (Cypress, Jest).
Proven ability to work in fast‑paced environments and deliver production‑ready code.
Strong communication skills and ability to collaborate in distributed teams.
Key Responsibilities
- Develop and maintain modern frontend applications using React 18, Next.js 14, and TypeScript.
- Build responsive, accessible, and high‑performance user interfaces using Chakra UI, custom design systems, and modern UI patterns.
- Implement and maintain complex state management solutions using React Query (TanStack Query) and Zustand, including caching, synchronization, and background updates.
- Work with REST and GraphQL APIs, handling advanced data fetching, error handling, and edge cases.
- Integrate authentication and authorization flows using NextAuth, JWT‑based sessions, and third‑party identity providers.
- Contribute to Next.js middleware, routing, and server‑side logic where needed.
- Write and maintain automated tests:
- E2E testing with Cypress
- Unit and integration tests with Jest
- Apply best practices in performance optimization, accessibility (a11y), and developer experience (DX).
- Participate in code reviews, technical discussions, and architectural decisions.
- Collaborate closely with designers and product managers to translate requirements into clean, scalable implementations.
Nice to Have
- Experience working on e‑commerce or marketplace platforms.
- Familiarity with GraphQL schema design and performance optimization.
- Experience contributing to or maintaining a design system.
- Exposure to React Native.
- Experience working on early‑stage MVPs or greenfield products.
Benefits
- Competitive compensation in USD.
- 10 PTOs
There are more than 50,000 engineering jobs:
Subscribe to membership and unlock all jobs
Engineering Jobs
60,000+ jobs from 4,500+ well-funded companies
Updated Daily
New jobs are added every day as companies post them
Refined Search
Use filters like skill, location, etc to narrow results
Become a member
🥳🥳🥳 452 happy customers and counting...
Overall, over 80% of customers chose to renew their subscriptions after the initial sign-up.
To try it out
For active job seekers
For those who are passive looking
Cancel anytime
Frequently Asked Questions
- We prioritize job seekers as our customers, unlike bigger job sites, by charging a small fee to provide them with curated access to the best companies and up-to-date jobs. This focus allows us to deliver a more personalized and effective job search experience.
- We've got over 200,000 jobs from 15,000+ vetted companies. No fake or sleazy jobs here!
- We aggregate jobs from 15,000+ companies' career pages, so you can be sure that you're getting the most up-to-date and relevant jobs.
- We're the only job board *for* software engineers, *by* software engineers… in case you needed a reminder! We add thousands of new jobs daily and offer powerful search filters just for you. 🛠️
- Every single hour! We add 2,000-3,000 new jobs daily, so you'll always have fresh opportunities. 🚀
- Typically, job searches take 3-6 months. EchoJobs helps you spend more time applying and less time hunting. 🎯
- Check daily! We're always updating with new jobs. Set up job alerts for even quicker access. 📅
What Fellow Engineers Say