At EX Squared LATAM, we collaborate with engineering-driven organizations to build and evolve scalable, business-critical digital platforms. We are looking for a Senior Full Stack Software Engineer with strong expertise in React.js and .NET Core, and proven hands-on experience with Optimizely, capable of owning end-to-end solutions across frontend, backend, and digital experience layers.

This role is designed for a senior, hands-on engineer with strong technical judgment, autonomy, and accountability, comfortable operating across the full application lifecycle—from user-facing experiences and CMS-driven content to backend services and system integrations.

What You’ll Do

Design, develop, and maintain full-stack solutions using React.js, Next.js, TypeScript, C#, .NET Core.
Develop and customize digital experiences using Optimizely (CMS / Digital Experience Platform).
Implement content management, personalization, and digital experience features within Optimizely environments.
Build and integrate RESTful APIs, ensuring scalable and efficient communication between systems.
Contribute to the design and evolution of full-stack application architecture, ensuring scalability, performance, security, and maintainability.
Apply clean code principles, modular design, and separation of concerns across frontend and backend layers.
Collaborate closely with Product Managers, UX/UI designers, QA engineers, and business stakeholders.
Take ownership of assigned components and proactively contribute to technical improvements and engineering standards.

What You’ll Bring

5+ years of professional experience in software development.
Proven experience working as a Full Stack Engineer in production environments with medium to high complexity systems.
Strong hands-on experience with: React.js, Next.js, and TypeScript////C#, .NET Core, and ASP.NET MVC
Mandatory hands-on experience with Optimizely (CMS or Digital Experience Platform) in production environments.
Experience delivering end-to-end solutions, from frontend UI to backend services and integrations.
Advanced understanding of RESTful APIs and system integrations.
Solid knowledge of relational databases and data modeling principles.
Strong understanding of scalability, security, and maintainability principles across the full stack.
Experience using Git in collaborative workflows.

Why Join EX Squared

Strong engineering culture focused on technical excellence and ownership.
Opportunity to work on high-impact digital platforms.
Collaboration with senior engineers across LATAM.
Real influence on architectural and implementation decisions.
Continuous technical growth and professional development.

What We Offer

Competitive compensation in USD, aligned with seniority.
100% remote work from anywhere in Latin America.
Participation in complex, large-scale digital experience initiatives.
Collaborative and inclusive environment where technical impact matters.

Senior Full Stack Software Engineer (Optimizely)

LATAM

Remote

Senior

Ex Squared LATAM