Senior Frontend Developer (React/SharePoint)

TL;DR

Senior Frontend Developer (React/SharePoint): Building and maintaining custom front-end components using React.js within SharePoint Framework (SPFx), delivering high-performance and maintainable solutions that integrate with Microsoft 365 and external systems with an accent on optimizing component performance within strict platform constraints. Focus on collaborating with stakeholders across geographies and supporting delivery within Agile/Kanban operating models.

Location: Must work from an office a minimum of 3 days a week in San Jose, Costa Rica.

Company

hirify.global is a company focused on providing a positive employee experience and supporting AT&T’s internal SharePoint platforms.

What you will do

• Develop and maintain SPFx solutions using React.js within SharePoint Online.
• Customize and extend SharePoint site functionality and front-end components.
• Integrate SharePoint with external systems via REST APIs.
• Optimize performance of components within strict platform constraints.
• Collaborate with engineers, leads, and project stakeholders.
• Support delivery within Agile/Kanban operating models and contribute to documentation.

Requirements

• 5–8 years of professional front-end development experience.
• Strong proficiency with React.js, modern JavaScript (ES6+), and TypeScript.
• Deep understanding of SharePoint architecture, including lists, libraries, and permissions.
• Experience with SharePoint Framework (SPFx).
• Familiarity with CI/CD principles and deployment in enterprise environments.
• Strong communication skills and team collaboration experience.
• Proficient in English (written and verbal).

Nice to have

• Basic knowledge of Azure Active Directory and Azure Functions.
• General awareness of the Power Platform (Power Automate, Power Apps).
• Experience working in compliance-heavy environments.
• Background in enterprise-level support or SW enhancement projects.

Culture & Benefits

• Maternity and parental leave extra days.
• Competitive benefits packages, including vacation and sick days.
• Access to online services for families and new parents.
• Diversity and Inclusion Board with 12 affinity groups.
• Internal learning and development programs.
• Enterprise-wide employee discounts.