All roles

Open role

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

Remote · South Korea Full-time

Job Title: Senior Full Stack Developer (4-6 Years Experience) Role Overview We are looking for a Senior Full Stack Developer with 4-6 years of experience who can design, build, and scale robust web applications end-to-end. You will work across both frontend and backend technologiesprimarily React and Node.js—while taking ownership of key modules, driving technical decisions, and ensuring high-quality, maintainable code.This role requires a strong grasp of system design fundamentals, performance optimization, and modern DevOps practices to deliver scalable and reliable applications.

Key Responsibilities

  • Build and maintain dynamic, responsive web applications using React
  • Design and develop scalable backend services and APIs using Node.js (NestJS)
  • Architect and optimize database solutions across SQL and NoSQL systems (e.g., MongoDB, PostgreSQL)
  • Take ownership of end-to-end feature development, from requirement understanding to deployment
  • Optimize applications for performance, scalability, and reliability
  • Collaborate closely with UI/UX designers and translate Figma designs into high-quality interfaces
  • Implement and enhance CI/CD pipelines and contribute to automated deployment workflows
  • Containerize applications using Docker and manage deployments on cloud platforms (preferably Azure)
  • Lead code reviews, enforce coding standards, and mentor junior developers
  • Identify technical debt and proactively drive improvements in architecture and code quality
  • Troubleshoot production issues and ensure system stability

Must-Have Skills

  • 4–6 years of full stack development experience
  • Strong proficiency in JavaScript (ES6+)
  • Advanced experience with React.js (hooks, performance optimization, state management)
  • Strong backend development experience using Node.js (NestJS Preferred)
  • Solid experience with MongoDB and at least one relational database (PostgreSQL/MySQL)
  • Strong understanding of RESTful APIs, API design, and integration patterns
  • Hands-on experience with Git and collaborative workflows (PR reviews, branching strategies)
  • Experience with CI/CD pipelines (e.g., GitHub Actions, GitLab CI)
  • Good understanding of HTML5, CSS3, and responsive design principles
  • Strong debugging, performance tuning, and problem-solving skills
  • Exposure to docker container & microservices architecture and distributed systems
  • Familiarity with system design concepts (scalability, caching, load balancing)
  • Experience with different services in a cloud platform like Azure (Preferred) / AWS

Good to Have

  • Exposure to GenAI/LLM integrations or modern AI-driven features
  • Experience in Python (FastAPI)
  • Mentorship to Junior Developers.

Soft Skills

  • Strong communication skills with the ability to articulate technical decisions clearly.
  • Ability to take ownership and drive tasks independently.
  • Mentorship mindset and willingness to support team growth.
  • Comfortable working in agile environments with evolving requirements.

More open positions

JavaScript Developer Remote (Hiring Immediately)

Work from home Full-time role

JavaScript Developer; Remote

Work from home Full-time role

Javascript Application Developer (remote)

Work from home Full-time role

Remote PHP Developer, Full-Time

Work from home Full-time role

PHP Developer - Backend (Remote)

Work from home Full-time role

Diversity, Equity & Inclusion (DEI) Digital Content Consultant, 3 months, Rome, Italy remotely (Italian nationals only)

Work from home Full-time role

[Remote] Analytics Lead, Full Stack (Consumer Analytics)

Work from home Full-time role

Experienced Virtual Assistant / Airbnb Customer Support Specialist – Short-Term Rental Contract to Hire Opportunity at careerzynith

Work from home Full-time role

Bilingual Technical Support Services Analyst

Work from home Full-time role

Dispensary Manager/Driver

Work from home Full-time role

Household & Executive Assistant

Work from home Full-time role

Access Navigator

Work from home Full-time role

[Remote] Clinical & Global Health Research Internship (Remote)

Work from home Full-time role

Remote careerzynith Data Entry Specialist – No Experience Required – Part‑Time, Customer Support & Order Management Role

Work from home Full-time role

[Remote] Patient Financial Services Representative

Work from home Full-time role

Hardware Quality Engineer

Work from home Full-time role

Content Manager

Work from home Full-time role

[Remote] Engineering Manager, Inference

Work from home Full-time role

TTEC is hiring: Licensed Property %26 Casualty Insurance Agent - Remote USA in Atlanta

Work from home Full-time role

Flemish/Dutch or French Senior Functional SAP Payroll Support Consultant

Work from home Full-time role

Marketing Operations Coordinator

Work from home Full-time role