About the role

We’re seeking a 602 Software Engineer to build and evolve modern web applications using React and Redux, with a primary focus on GraphQL for data access. You’ll collaborate with product, design, and platform teams to deliver secure, performant, and accessible user experiences at scale. Experience with micro-frontend (MFE) architectures is a plus.
What you’ll do

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- Build, test, and maintain responsive React applications using modern patterns (hooks, functional components, context where appropriate).
- Implement predictable state management with Redux/Redux Toolkit, including middleware, selectors, and efficient store design; integrate cleanly with GraphQL client caches.
- Integrate with GraphQL services using Apollo Client or urql: define queries, mutations, and subscriptions; manage normalized caching, pagination (cursor/relay style), error handling, retries, and optimistic updates.
- Partner with backend teams on schema and API contracts (SDL), versioning, and performance patterns (query batching, persisted queries, avoiding n+1 issues).




Partner with design to implement accessible (WCAG-compliant) and consistent UI aligned to a design system.
- Write high-quality, well-tested code (Jest, React Testing Library); automate via CI/CD and follow trunk-based development or GitFlow as applicable.
- Profile and optimize performance (bundle size, code splitting, memoization, virtualization, lazy loading) and GraphQL network usage (field-level policies, cache keys).
- Participate in architecture/design reviews, code reviews, and contribute to shared libraries and component systems.
Document components and patterns for reusability; mentor peers and contribute to engineering best practices.
- Leverage AI-assisted development tools and prompt engineering techniques to accelerate coding workflows, generate boilerplate, write tests, refactor code, and improve documentation quality.

Must-have qualifications

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- Professional experience building production-grade

📌 Software Engineer III (Buenos Aires)
🏢 Testing Site - JPMC
📍 Buenos Aires