ZipRecruiter

Log In

1

Mid Level React Developer Jobs in Puerto Rico (NOW HIRING)

INVID

PR · On-site

This job is considered a mid-level back-end application development position. Back-End Developers level II must have the necessary experience to work or assist others in the analysis, design ...

Moriah Engineering

Automation Technician

Vega Baja, PR · On-site

$35.90K/yr

This role is entry to mid-level and ideal for candidates looking to grow their technical skills in ... Collaborate with engineers and production teams to optimize line performance. * Identify minor ...

Deloitte

Lead Product Analyst

San Juan, PR

Being a mid-level product management role, you will have the opportunity to own products of lesser ... Co-create in collaboration with business stakeholders, engineering, experience, and delivery.

Sargent & Lundy

PR · On-site

Description This is a Mid-level Structural Engineer position that offers a variety of interesting and challenging assignments in structural engineering and will provide an excellent opportunity to ...

Cube Group Inc

PR · On-site

$28.50K/yr

Mid-Level (3-5 Years Relevant Experience) Employment Type: Full-Time Compensation: Annual base ... engineer moments that matter. As a leader in the event management industry, we bring projects to ...

Fluor

Project Controls Specialist II

Guaynabo, PR

... for engineering and construction Develop and maintain Management, Project and Control level ... The market rate for the role is typically at the mid-point of the salary range; however, variations ...

People also search for

All JobsMid Level React Developer JobsMid Level React Developer Jobs in Puerto Rico

Mid Level React Developer information

What are the key skills and qualifications needed to thrive as a Mid Level React Developer, and why are they important?

To thrive as a Mid Level React Developer, you need strong proficiency in JavaScript, React.js, HTML, and CSS, often supported by a relevant degree or equivalent experience. Familiarity with development tools such as Git, RESTful APIs, and build systems like Webpack or Babel, as well as knowledge of testing frameworks, is typically expected. Effective problem-solving, teamwork, and communication skills help developers collaborate efficiently and adapt to evolving project requirements. These abilities are crucial for building scalable, maintainable applications that meet user needs and business goals.

What are some common challenges faced by mid-level React developers when working on larger projects, and how can they be addressed?

Mid-level React developers often encounter challenges such as managing complex component hierarchies, ensuring consistent state management, and maintaining code readability as projects scale. To address these, developers should familiarize themselves with established patterns like Redux or Context API for state management, adopt reusable component structures, and follow best practices for code organization. Regular code reviews and collaborating closely with senior developers and designers also help ensure code quality and project alignment.

What does a Mid Level React Developer do?

A Mid Level React Developer builds and maintains web applications using the React JavaScript library. They are responsible for developing user interfaces, optimizing application performance, and collaborating with designers and back-end developers to deliver seamless user experiences. Mid Level React Developers often write reusable components, manage application state, and ensure code quality through testing and code reviews. They are expected to have a solid understanding of React concepts, JavaScript ES6+, and related tools like Redux, Webpack, or Babel.
What are the most commonly searched types of React Developer jobs in Puerto Rico? The most popular types of React Developer jobs in Puerto Rico are:
Mid Level React Developer jobs near you
Infographic showing various Mid Level React Developer job openings in Puerto Rico as of May 2026, with employment types broken down into 87% Full Time, 12% Part Time, and 1% Contract. Highlights an 86% Physical, 2% Hybrid, and 12% Remote job distribution.

Back End Developer II

INVID

On-site

Full-time

Posted 15 days ago

Job description

Salary: 55k-65k

At INVID, we're looking for a skilled and experienced Back End Developer IIto build and maintain robust, scalable server-side applications that power our web and mobile platforms. This is a critical technical role requiring deep expertise in back-end development, API design, and database architecture. The ideal candidate excels at creating secure, high-performance systems that ensure reliability, scalability, and seamless integration with front-end components.


What sets INVID apart is our collaborative and flexible work environment. We encourage our team to raise the bar in everything they do while maintaining a healthy work-life balance. With our hybrid work model, team members thrive both in the office and remotely. We foster a culture of mutual respect, autonomy, and accountability, where your voice matters and your growth is supported. From structured career paths and paid professional development to access to industry events, were committed to your success.


Job Description


The Back End Developer II position is for an employee with intermediate knowledge, skills, and experience in building and testing back-end systems for web and mobile applications. This job is considered a mid-level back-end application development position. Back-End Developers level II must have the necessary experience to work or assist others in the analysis, design, maintenance, support, deployment, implementation, and documentation of Web applications. This employee must be able to work in development teams, providing constant feedback and status to her or his peers.


Duties and Responsibilities

  • Back-End Development
  • Write server-side code to support single-page web applications using modern frameworks and platforms and the latest Web standards for multiple Internet browsers.
  • Write server-side code to develop Application Programming Interfaces (API) using REST or SOAP approaches for data interchange.
  • Write server-side code for database interaction with the application using multiple modern frameworks and libraries.
  • Write server-side code to develop services, recurrent jobs, and workflows to maintain or manage application processes.
  • Write the necessary code for the integration to other platforms or services.
  • Understand and work with software requirements specifications.


Web Application Testing

  • Perform unit testing to APIs, and databases.
  • Provide documentation for unit testing.
  • Analyze and develop solutions and fixes to errors or problems.


Code Management and Standards

  • Work with modern platforms dedicated to code storage, code management, branching, and file versioning.
  • Work with multiple code branches and versions.
  • Write code in compliance with the company standards and other industry standards used for optimization, security, interoperability, compatibility, accessibility, and usability.
  • Write code documentation and comments following company standards.


Knowledge

Programming Languages

The employee must possess intermediate knowledge in the following programming, notation, and markup languages.

  • XML
  • JSON
  • JavaScript
  • TypeScript
  • C#.Net
  • Java
  • jQuery
  • T-SQL


Experience

The employee must have at least three years of proven working experience developing applications, performing similar duties and responsibilities, and using the languages, technologies, and platforms described in this document.


Education:

The employee must hold a bachelors degree in computer science or software engineering, or have 5 years of equivalent experience developing applications.


Other
US Resident | US Citizen

Fully Bilingual (Spanish and English)

Work Modality: Hybrid


EEO