Senior React.js Developer Jobs

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Senior Full Stack (Node.js + React.js) Developer

Location

Salary:

Not provided

Peiko

Expiration Date

Until further notice

Requirements

Successful experience of Backend & Frontend development
Commercial work experience of 4+ years or more on projects with React.js and Node.js
Deep knowledge of Redux
Excellent knowledge of JavaScript
Knowledge of CI/CD
Knowledge of MongoDB
Experience working with AWS services
Upper-Intermediate English (a high level of proficiency is required, as there will be communication with the team and the client)

Job Responsibility

Work on new features, develop both backend and frontend parts using Node.js, React.js, and other technologies as needed
Writing high-quality code, supporting existing functions
Collaboration with the engineering team to develop and launch new features
Suggesting product quality improvement
Communication with the client and the team (in English)

What we offer

Full remote work or at your choice
Work in a strong team
Transparent processes
Interesting and difficult tasks and projects
Competitive salary
The possibility of training and development within the company: payment of specialized courses, participation in conferences
We have corporate English language training + we are an international company, so you still have the opportunity to practice English at work
Social package (paid vacation and sick leave)
Merch and welcome box await you, we give employees gifts, equipment, Apple Watch, MacBook and more
At Peiko, you have confidence and stability, support, respect, trust, teamwork, care for each employee

Enterprise Software Arch (Senior ReactJS Developer)

Location: Redwood City, CA (2 days/week on office)

Location

United States , Redwood City

Salary:

Not provided

Enormous Enterprise

Expiration Date

Until further notice

Requirements

4+ years of proven experience as a React.js Developer
Advanced proficiency in React.js, React-router, Babel, NPM, Webpack, etc., and their core principles, including state management, functional components, hooks, and virtual DOM manipulation
Strong knowledge of Typescript, Jest, and Cypress
Ability to identify and rectify performance bottlenecks
Strong command of HTML5, CSS3, and JavaScript (ES6+), along with modern frontend build tools and workflows
Familiarity with RESTful APIs, GraphQL, or similar data communication protocols
Must have good knowledge of Agile/Scrum, continuous integration, and deployment
Good understanding of advanced CSS3 concepts including Flex and CSS Grid and usage in large-scale enterprise applications
Good understanding of integrating with REST APIs and ensuring the quality of APIs by reporting bugs (if any) during integration

Senior Frontend Developer

We are looking for a Senior Frontend Developer with strong JavaScript and ReactJ...

Location

Portugal , Lisbon, Braga or Coimbra

Salary:

Not provided

Egor

Expiration Date

Until further notice

Requirements

5+ years of experience in frontend development
Strong command of JavaScript and TypeScript
3+ years of experience with React.js and modern frontend frameworks
Solid understanding of HTML5, CSS3, and responsive design
Experience with RESTful APIs and asynchronous request handling
Familiarity with Git and version control tools

Job Responsibility

Develop and maintain user interfaces using ReactJS, TypeScript, and modern frontend workflows like Redux and Flux
Collaborate with cross-functional teams (product managers, designers, backend developers) to create high-quality products
Optimize UI/UX designs for speed and scalability
Conduct code reviews, mentor junior developers, and ensure coding standards are maintained
Write and execute unit tests for frontend code and resolve any performance issues

Senior Full Stack Developer

CNBS is looking for a Senior Full Stack Developer for our ePayments team. This i...

Location

United States , Cincinnati

Salary:

Not provided

CNBS Software

Expiration Date

Until further notice

Requirements

Experience with React.JS, React Native, JavaScript including DOM Manipulation and the JavaScript object model
Thorough understanding of React Native and its core Principles
Hands on experience on React.JS Framework – at least 5 years
Very Good Knowledge of HTML5, CSS
Experience with common front-end development tools such as Web pack, NPM etc
Experience with .NET Core and interaction with RESTful APIs
Very strong communication skills
Strong project and product management skills

Job Responsibility

Interact with customers and business analysts to gather requirements, plan releases and develop user stories
Working on a distributed team of React.JS, .NET and ABAP engineers to develop payment processing applications
Manage user requests, inquiries and troubleshooting problems in an Enterprise Systems landscape

What we offer

Health, Dental, Life and STD/LTD

Senior Full-Stack Developer (Back-End Focus)

We’re looking for a talented and driven Full-Stack Developer to join our dynamic...

Location

Salary:

Not provided

gamdom

Expiration Date

Until further notice

Requirements

Proven experience as a Full-Stack Developer with a backend focus
Strong expertise in: React.js for scalable UI development
Node.js & Express for backend services
PostgreSQL for relational database design and management
MUI for consistent UI/UX design
WebSockets (socket.io) for real-time communication
Strong problem-solving and analytical skills
Ability to work in a fast-paced, collaborative environment
Excellent communication skills (verbal & written)
Adaptability and eagerness to learn new technologies

Job Responsibility

Frontend Development: Build and maintain user interfaces with React.js and MUI for responsive, consistent design
Backend Logic: Develop robust server-side functionality with Node.js and Express
Database Management: Design and optimize schemas and queries using PostgreSQL
Real-Time Features: Implement live updates and streaming with WebSockets (socket.io)
Collaboration: Work closely with product managers, designers, and other engineers to deliver high-quality features
Quality & Performance: Troubleshoot issues, write unit/integration tests, and optimize performance for scalability
Continuous Learning: Stay up-to-date with modern tools, frameworks, and best practices

What we offer

Fully remote - work from anywhere in the world
Flexible schedule
30 days of paid time off
Equipment allowance

Fulltime

Senior Frontend developer

We're seeking a skilled and innovative Frontend Developer to join our dynamic te...

Location

Salary:

Not provided

Hivex

Expiration Date

Until further notice

Requirements

5+ years of experience as a Frontend Developer with a focus on React.js
Strong proficiency in JavaScript/TypeScript
Experience with state management libraries such as Redux
Solid understanding of front-end technologies, including HTML5, CSS3, and responsive design
Experience with backend development (Node.js/PostgreSQL)
Knowledge of version control systems (e.g., Git)
English level - Upper-intermediate +
Excellent problem-solving and communication skills
Ability to work both independently and collaboratively in a team environment

What we offer

Remote job with the freedom to work from anywhere in the world
Flexible work schedule tailored to your life and work needs
Competitive and timely salary
Opportunities for professional growth and development
The chance to gain experience in various fields and participate in exciting projects
Your ideas and initiatives are always welcome and valued

Senior React Developer

Our client is one of the largest insurance brokers in the world, working in the ...

Location

Argentina

Salary:

Not provided

ELEKS

Expiration Date

Until further notice

Requirements

10+ years of experience with React.js, JS
Experience with any UI-rich component library or corporate UI design system (experience in working with Storybooks)
Strong understanding of REST API
Advanced Level of English
Experience in leading teams of 3+ developers (creating, dividing tasks between developers, code reviews, mentoring if needed)
Experience in creating FE Architecture
Clear communication skills & responsible attitude to work
Self-sufficient developer who can mentor lower-level people

Job Responsibility

Design, develop, and maintain reliable software in line with technical requirements, focusing on performance and availability
Analyze requirements, review designs, and estimate user stories following project methodology (Agile, Waterfall, etc)
Proactively propose code refactoring and optimization improvements according to the best software development practices and coding standards
Help maintain and improve high-quality standards within the developer community by sharing knowledge, conducting tech talks, and participating in the internal promotion verification process
Stay up-to-date with modern technology and obtain professional certifications
Support less experienced developers by providing training, distributing, and monitoring tasks

What we offer

Close cooperation with a customer
Challenging tasks
Competence development
Ability to influence project technologies
Team of professionals
Dynamic environment with low level of bureaucracy

Senior Application Full Stack Developer

The Senior Application Full Stack Developer role involves designing and developi...

Location

Canada , Mississauga

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

5+ years of experience as a Senior Java Developer with hands on end to end solutions
Hands on experience using Core java, Server side Java, Javascript, MVC Pattern, Spring Framework
Diverse experience utilizing tools in Microservices architecture applications using Spring Boot, Spring Cloud config, Netflix OSS components (Eureka, Zuul, Hystrix), Pivotal Cloud Fundry, ZooKeeper, AWS etc.
Role requires overcoming obstacles through collaboration, research/ testing and communication with ability to negotiate solutions
Individual must have experience working in a high pressure, fast paced 'Global' environment providing daily support to multiple competing priorities
Excellent interpersonal, oral and written communication skills
5+ years of Oracle RDBMS design and development skills with excellent knowledge in store procedures, PL/SQL, triggers and performance tuning
Experience migrating Oracle RDBMS to ECS cloud and NoSQL database
Architect and hands on technical experience in implementing large volume real time complex solutions in Big Data Platforms & Public Cloud platforms would be a huge asset
5+ years hands on experience in ETL functionalities including experience with tools like Talend, Infomatica, spark etc.

Job Responsibility

Responsible for design and development as a full stack java developer to build very high volume low latency enterprise applications that can adapt and scale to changing market conditions
Responsible for delivery of application technology solutions and data information planning effort, owns the technical development environment and works with the Enterprise team to deliver in a fast paced time bound manner
Help ensure high quality software delivery by providing guidance on testing strategy, technical consultation to plan/design performance testing, and providing feedback/guidance for tuning performance and other non-functional elements of the application
Migration of application functionalities that are part of large monolithic systems, running on WebLogic, into an ecosystem of Microservices using the latest technologies, and/or a combination of microservices and monoliths where applicable
Understanding the client requirements and envision the solution that can be captured as respective user stories in JIRA
Understanding the impact of adapting different architectures and designs and present the same to all relevant stakeholders
Management of both functional and technical requirements while deciding on technical solutions
Development of solutions following established technical design, application development standards and quality processes in projects
Building test automation suites to reduce the regression effort of the QA team
Identification of existing system bottlenecks and deficiencies, devise and implement robust solutions to address these shortcomings

Senior React.js Developer

Quantyx Advisors S.r.l.

Location:
Italy, Milan

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
December 11, 2025

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