Senior Full-Stack Developer

Quasar Solutions; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Quasar Solutions seeks a Senior Full-Stack Developer to architect and ship production-grade web applications end to end. You will collaborate with clients and cross-functional teams to turn ambitious ideas into reliable, scalable products used by companies around the world.

Responsibilities include designing full-stack features with React and Node.js, owning projects from planning through deployment, writing clean and secure code, mentoring juniors, and helping shape engineering best practices

Qualifications

• 5+ years of professional web development experience.
• Strong expertise in JavaScript/TypeScript, React, and Node.js.
• Experience with cloud platforms (AWS, GCP, or Azure) and CI/CD workflows.
• Solid knowledge of relational and non-relational databases.
• Excellent written and spoken English.

Responsibilities

• Design, build, and maintain full-stack features using React and Node.js.
• Own projects from planning to deployment and monitoring.
• Write clean, well-tested, and secure code focused on performance.
• Collaborate with designers, product managers, and clients to define requirements.
• Mentor junior developers and contribute to engineering best practices.

Skills

JavaScript/TypeScript

React

Node.js

Cloud platforms (AWS/GCP/Azure)

CI/CD workflows

Databases (SQL/NoSQL)

English proficiency

Mentoring

Tools

Git

CI/CD tooling

Job description

As a Senior Full-Stack Developer at Quasar, you will architect and ship production-grade web applications end to end. You will collaborate directly with clients and cross-functional teams to turn ambitious ideas into reliable, scalable products used by companies around the world.

• Design, build, and maintain full-stack features using React, Node.js, and modern cloud services.
• Own projects from technical planning through deployment and monitoring.
• Write clean, well-tested, and maintainable code with a focus on performance and security.
• Collaborate with designers, product managers, and clients to define requirements and scope.
• Mentor junior developers and contribute to engineering best practices.

• 5+ years of professional experience building web applications.
• Deep expertise in JavaScript/TypeScript, React, and Node.js.
• Experience with cloud platforms (AWS, GCP, or Azure) and CI/CD workflows.
• Strong understanding of relational and non-relational databases.
• Excellent written and spoken English.