full stack engineer (JavaScript)

Full Stack Web.

Senior

Upper-Intermediate English

Required Skills

JavaScript

Nice to Have

Summary

Design, develop, and maintain scalable, high-performance full stack web applications using the MERN stack.

Build dynamic, responsive, and user-friendly frontend applications using ReactJS, JavaScript, HTML5, and CSS3.

Develop robust backend services and RESTful APIs using NodeJS and ExpressJS.

Implement business logic, middleware, and server-side integrations.

Design and manage NoSQL databases using MongoDB, including schema design and performance optimization.

Integrate frontend components with backend services and third-party APIs.

Implement state management using Redux, Context API, or similar libraries.

Ensure application security, scalability, and performance, following best coding and security practices.

Implement authentication and authorization using JWT, OAuth2, and role-based access control.

Write and maintain unit, integration, and end-to-end tests using Jest, Mocha, Chai, or Cypress.

Collaborate with UI/UX designers, QA engineers, DevOps teams, and business stakeholders.

Participate actively in Agile/Scrum ceremonies including sprint planning, daily stand-ups, reviews, and retrospectives.

Deploy and manage applications on cloud platforms such as AWS or Azure.

Use CI/CD pipelines and version control tools like Git, GitHub, or GitLab.

Maintain technical documentation including application architecture and API specifications.

Are you a talented developer looking for a remote job that lets you show your skills and get decent compensation? Join Upstaff.com, a platform that connects you with hand-picked startups and scale-ups in the US and Europe.

Not your tech stack?

Join the Upstaff community and we are looking for the best project for you. Be ready for the next steps:

Create your profile on our website (import from LinkedIn)
20-30-minute screening call
Technical interview
Feedback
Project Selection (we are looking for the best project for you).

We work with developers from 50+ countries in different regions: Europe, LATAM, the U.S. (W-9 form owners), Canada, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), and the the UK.

We don’t have a legal and ethical basis to accept applicants from the following countries: Russia, Belarus, Iran, North Korea
We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.