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ioet

Senior Full Stack Engineer

ioet

. Work across frontend and backend systems .

Posted 9/18/2026full-timeRemoteSeniorWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates strong expertise in TypeScript and React for full-stack development, with a focus on building scalable applications and optimizing SQL queries. Proven ability to modernize legacy systems while ensuring code quality and system reliability.

Highest-signal resume keywords
TypeScript ExpertiseReact DevelopmentSQL OptimizationREST API DesignPostgreSQL Proficiency

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
TypeScriptReactExpress.jsSQLPostgreSQLREST APIsSoftware ModernizationCode QualityDatabase PerformanceFull-Stack Architecture
Soft Skills
CollaborationCommunicationProblem-SolvingIndependenceTechnical Investigation
Industry Keywords
Software DevelopmentLegacy ApplicationsBusiness LogicCode RefactoringDistributed Teams

Tech Stack

Tools & technologies
JavaScriptPostgresReactSQLTypeScript

About the role

Key responsibilities & impact
  • Work across frontend and backend systems
  • Build scalable applications
  • Improve existing functionality
  • Modernize complex software
  • Work with large codebases and understand existing business logic
  • Implement customized solutions while maintaining code quality and system reliability
  • Analyze and improve complex SQL queries and database performance
  • Design, develop, and maintain REST APIs and backend services
  • Modernize, refactor, or migrate legacy applications while preserving business functionality
  • Troubleshoot and improve application and database performance
  • Investigate existing systems and solve complex technical problems
  • Collaborate with distributed technical teams

Requirements

What you’ll need
  • 5+ years of professional software development experience
  • Strong expertise in TypeScript for frontend and backend development
  • Strong hands-on experience with React for production user-facing applications
  • Strong hands-on experience with Express.js for backend development and API implementation
  • Strong experience with SQL optimization, including complex query analysis and database performance improvement
  • Proficiency with PostgreSQL and relational database design
  • Experience designing, developing, and maintaining REST APIs and backend services
  • Experience working with large, complex, or highly customized software systems
  • Experience modernizing, refactoring, or migrating legacy applications while preserving existing business functionality
  • Ability to understand complex existing business logic and translate it into clean, maintainable solutions
  • Strong understanding of full-stack architecture, clean code, testing, and software engineering best practices
  • Experience troubleshooting and improving application and database performance
  • Ability to work independently, investigate existing systems, and solve complex technical problems
  • Strong collaboration and communication skills with distributed technical teams
  • Strong English communication skills, minimum B2 level proficiency
  • Application and CV in English are mandatory
  • Based in Latin America

Benefits

Comp & perks
  • Remote work
  • Flexible schedule
  • Collaboration with international clients
  • USD compensation
  • Paid Holidays and Vacations
  • Paid family and sick leaves
  • English classes
  • Educational and wellness bonus
  • Structured career plan with regular salary reviews
  • Emphasis on personal growth and mentorship