Senior Fullstack Engineer, Node/React

Gorilla Logic

Senior Fullstack Engineer developing Node.js/Fastify and React applications for Gorilla Logic clients. Integrating RAG systems and AI/LLM capabilities in Agile delivery.

Posted 8/12/2026full-timeRemote • 🇨🇴 ColombiaSeniorWebsite

Core Competencies

Role fit

Core Competencies

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

Demonstrates expertise in designing and developing scalable web applications using Node.js and React, with a strong focus on AI-powered solutions and database optimization. Proficient in Agile methodologies and collaborative development practices, ensuring high-quality code and effective stakeholder communication.

Highest-signal resume keywords

Node.js DevelopmentReact Frontend DevelopmentRetrieval-Augmented Generation (RAG) SystemsPostgreSQL Query OptimizationAgile Methodologies

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Node.jsFastifyReactJavaScript (ES6+)TypeScriptPostgreSQLSQL Query OptimizationAsynchronous OperationsUnit TestingIntegration Testing

Soft Skills

CollaborationConstructive FeedbackProblem SolvingCommunicationTeam Culture Contribution

Tools & Technologies

LangChainLangGraphLangSmithJestMochaCypressMicrosoft AzureGitHub CopilotTabnine

Industry Keywords

AI-Powered ApplicationsEvent-Driven ArchitectureComponent-Based ArchitectureResponsive DevelopmentTest-Driven Development (TDD)

Tech Stack

Tools & technologies

AzureCloudCypressJavaScriptJestMochaNode.jsPostgresPythonReactSQLTypeScript

About the role

Key responsibilities & impact

Design, develop, and maintain scalable web applications using Node.js/Fastify for backend services and React for frontend development
Design, develop, and integrate AI-powered solutions, including Retrieval-Augmented Generation (RAG) systems
Implement and optimize PostgreSQL queries and database structures for performance and reliability
Write clean, maintainable, and well-documented code following industry best practices
Participate in code reviews and provide constructive feedback to improve code quality and maintainability
Collaborate with designers, QA engineers, product owners, clients, and other cross-functional stakeholders to define and refine requirements
Participate in daily stand-ups, sprint planning, and retrospectives
Identify and resolve performance bottlenecks, bugs, and technical debt across backend and frontend code
Monitor application health and reliability and implement scalability improvements
Stay current with technologies, frameworks, AI development practices, and full-stack development best practices
Identify opportunities to improve development processes and application architecture
Contribute to a collaborative and learning-focused team culture

Requirements

What you’ll need

Strong experience with Node.js and Fastify for scalable backend services
Strong experience with React and modern frontend development practices
Hands-on experience designing and developing Retrieval-Augmented Generation (RAG) systems
Experience with LangChain, LangGraph, and LangSmith
Experience with modern JavaScript (ES6+) and TypeScript
Proficiency in asynchronous operations, event-driven architectures, and middleware
Understanding of component-based architecture, React hooks, and reusable UI patterns
Experience with responsive and cross-browser development
Experience writing and optimizing complex SQL queries and stored procedures, preferably with PostgreSQL
Experience developing AI-powered applications and integrating AI/LLM capabilities into full-stack solutions
5+ years of experience working in Agile environments such as Scrum, Kanban, or SAFe
Ability to collaborate with clients and stakeholders and translate business needs into technical solutions
Experience in iterative development, backlog grooming, and consulting delivery
Experience with unit, integration, and end-to-end testing using Jest, Mocha, Cypress, or similar frameworks
Familiarity with test-driven development (TDD)
Bonus: Experience with Microsoft Azure and cloud-based application development
Bonus: Understanding of AI-assisted coding tools such as GitHub Copilot or Tabnine
Bonus: Basic understanding of machine learning libraries and their interaction with Node.js and Python-based services

Benefits

Comp & perks

🌐 Worldwide ❌ Jobs You've Hidden ⭐️ Saved Jobs ✅ Applied Jobs ✉️ Email Alerts 👤 Account Gorilla Logic Website LinkedIn All Job Openings 501 - 1000 employees 💼 Consulting 📣 Marketing 📦 Logistics Consulting
Marketing
Logistics Gorilla Logic is a company renowned for its expertise in modern software and data engineering. Serving as a strategic partner rather than just a vendor, Gorilla Logic specializes in digital product design, cloud engineering, data and AI delivery, DevOps, quality assurance, and legacy modernization. With a team of skilled digital product designers, solutions architects, and Agile nearshore teams, Gorilla Logic has been instrumental in developing business-critical software applications for Fortune 500 and SMB companies for over 20 years. Their services include creating SaaS platforms, enhancing digital experiences, and providing flexible, security-focused solutions. Gorilla Logic operates with teams located in Costa Rica, Colombia, Mexico, and the United States, emphasizing collaborative partnerships to deliver cutting-edge digital engineering solutions. Senior Fullstack Engineer, Node/React Job not on LinkedIn 🔥 0 minutes ago 🌐 Colombia, Costa Rica – Remote ⏰ Full Time 🟠 Senior 💻 Frontend Engineer / Web Developer Azure Cloud Cypress JavaScript Jest Mocha Node.js Postgres Python React SQL TypeScript Apply Now Customize resume + cover letter Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 Description
Design, develop, and maintain scalable web applications using Node.js/Fastify for backend services and React for frontend development
Design, develop, and integrate AI-powered solutions, including Retrieval-Augmented Generation (RAG) systems
Implement and optimize PostgreSQL queries and database structures for performance and reliability
Write clean, maintainable, and well-documented code following industry best practices
Participate in code reviews and provide constructive feedback to improve code quality and maintainability
Collaborate with designers, QA engineers, product owners, clients, and other cross-functional stakeholders to define and refine requirements
Participate in daily stand-ups, sprint planning, and retrospectives
Identify and resolve performance bottlenecks, bugs, and technical debt across backend and frontend code
Monitor application health and reliability and implement scalability improvements
Stay current with technologies, frameworks, AI development practices, and full-stack development best practices
Identify opportunities to improve development processes and application architecture
Contribute to a collaborative and learning-focused team culture 🎯 Requirements
Strong experience with Node.js and Fastify for scalable backend services
Strong experience with React and modern frontend development practices
Hands-on experience designing and developing Retrieval-Augmented Generation (RAG) systems
Experience with LangChain, LangGraph, and LangSmith
Experience with modern JavaScript (ES6+) and TypeScript
Proficiency in asynchronous operations, event-driven architectures, and middleware
Understanding of component-based architecture, React hooks, and reusable UI patterns
Experience with responsive and cross-browser development
Experience writing and optimizing complex SQL queries and stored procedures, preferably with PostgreSQL
Experience developing AI-powered applications and integrating AI/LLM capabilities into full-stack solutions
5+ years of experience working in Agile environments such as Scrum, Kanban, or SAFe
Ability to collaborate with clients and stakeholders and translate business needs into technical solutions
Experience in iterative development, backlog grooming, and consulting delivery
Experience with unit, integration, and end-to-end testing using Jest, Mocha, Cypress, or similar frameworks
Familiarity with test-driven development (TDD)
Bonus: Experience with Microsoft Azure and cloud-based application development
Bonus: Understanding of AI-assisted coding tools such as GitHub Copilot or Tabnine
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