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Senior Full Stack Dev (React + Node)

Roles & Responsibilities

  • 8+ years of professional software development experience (10+ preferred)
  • Strong proficiency in React (SPA development and modern frontend patterns)
  • Deep expertise in NodeJS backend development, including building and maintaining microservices
  • Proven experience with REST API design and implementation

Requirements:

  • Build complex, user-facing features and UIs using React and its ecosystem
  • Design, develop, and maintain NodeJS microservices and backend services outside of monolithic frameworks
  • Design, build, and maintain RESTful APIs
  • Write comprehensive unit and integration tests to ensure stability and quality

Job description

Please note that we will never request payment or bank account information at any stage of the recruitment process. As we continue to grow our teams, we urge you to be cautious of fraudulent job postings or recruitment activities that misuse our company name and information. Please protect your personal information during any recruitment process. While Monks may contact potential candidates via LinkedIn, all applications must be submitted through our official website (monks.com/careers).

Senior Full-Stack Engineer (NodeJS + React)

Location: [Fully remote] Colombia


.Monks Technology Services, part of Media.Monks and S4 Capital, is a global consulting firm mastering AI-powered transformations for the Fortune 100. We combine long-term strategic thinking, deep enterprise experience, and a human-centered approach to help clients transform business processes and dominate their industries.

About the Role

As a Senior Full-Stack Engineer (NodeJS + React), you’ll take end-to-end ownership of features—from concept through deployment—building and enhancing modern React single-page applications alongside NodeJS microservices and APIs. You’ll thrive in a collaborative, cross-functional environment, balancing frontend and backend work (roughly 80/20) while contributing to technical design, automated testing, and occasional CI/CD setup.

Responsibilities

  • Build complex, user-facing features and UIs using React and its ecosystem
  • Design, develop, and maintain NodeJS microservices and backend services outside of monolithic frameworks
  • Design, build, and maintain RESTful APIs
  • Write comprehensive unit and integration tests to ensure stability and quality
  • Collaborate with product managers, designers, and engineers in an agile environment
  • Contribute to technical design discussions for features, components, and services
  • Own the development lifecycle, including occasional setup of CI/CD pipelines for new services
  • Troubleshoot bottlenecks and bugs and implement effective, scalable fixes
  • Other duties as assigned

About You

Qualifications & Skills

  • 8+ years of professional software development experience (10+ preferred)
  • Strong proficiency in React (SPA development and modern frontend patterns)
  • Deep expertise in NodeJS backend development, including building and maintaining microservices
  • Proven experience with REST API design and implementation
  • Strong experience with PostgreSQL, including ORM usage and query fundamentals
  • Hands-on experience with Docker for containerization and orchestration
  • Strong automated testing mindset; experience writing robust unit/integration tests
  • High ownership, autonomy, and strong communication/collaboration skills
  • Nice to have: Proficiency with SQL, experience with Jest, exposure to Python or other backend languages

.Monks Technology Services does not discriminate on the basis of race, sex, color, religion, age, national origin, marital status, disability, veteran status, genetic information, sexual orientation.

 

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About Monks 

Monks is the global, digital-first, data-driven, unitary operating brand of S4 Capital plc. With a legacy of innovation and specialized expertise, Monks combines an extraordinary range of global Marketing and Technology Services to redefine how brands interact with the world. Through Monks.Flow, its flagship AI ecosystem for marketing orchestration, Monks transforms marketing into a growth engine, collapsing timelines and connecting brands to culture in real time. By deploying bespoke intelligent agents across disciplines and delivering culturally relevant, high-impact creative and digital solutions, Monks solves key critical business challenges across the entire brand enterprise to help brands sustain long-term impact.

 

Monks was named a Contender in The Forrester Wave™: Global Marketing Services, ranks among Cannes Lions' Top 10 Creative Companies (2022-25) and remains the only partner featured in AdExchanger’s Programmatic Power Players list every year (2020-24). Named Adweek’s first AI Agency of the Year (2023) and The One Show’s inaugural AI Pioneer Organization, Monks was also awarded Business Intelligence Group’s 2025 Excellence in Artificial Intelligence Award in both the Organizational and AI Product categories. As a trusted partner to cutting-edge innovators in tech, Monks earned titles such as Optimizely Experimentation Partner of the Year (2025), runner-up for the Adobe Firefly Partner Award (2024), and Workato’s AI Visionary Customer Impact Award (2024). Additionally, Monks achieved a record-breaking number of FWAs and continues to hold the most of any partner.

 

We are an equal-opportunity employer committed to building a respectful and empowering work environment for all people to freely express themselves amongst colleagues who embrace diversity in all respects. Including fresh voices and unique points of view in all aspects of our business not only creates an environment where we can all grow and thrive but also increases our potential to produce work that better represents—and resonates with—the world around us. 

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