Principle React Developer (Only W2 - Onsite)

Jobs in JS; Andover (MA); On-site; USD 140,000 - 190,000; Full time

Job summary

Jobs in JS is seeking an experienced Frontend Technical Lead in Andover, MA to guide architecture, development, and delivery of modern web applications. The role blends hands-on engineering with technical leadership, mentoring engineers, and collaborating with Product Owners, UX teams, architects, backend engineers, and DevOps across our global organization.

The Senior React Developer will stand alone with minimal supervision, deliver secure, scalable, accessible experiences, and drive the

Qualifications

• Bachelor's degree in CS or related field or equivalent practical experience.
• 8+ years of software development, with lead or senior contributor experience.
• ReactJS, TypeScript, JavaScript, HTML5, CSS3 expertise and state management.
• Enterprise-scale web app delivery focus on performance, security, accessibility.
• REST/GraphQL API integration; Node.js knowledge preferred.
• CI/CD, Git, automated testing, modern DevOps practices.
• Ability to influence decisions and lead across Agile teams.

Responsibilities

• Lead frontend architecture and development using ReactJS and TypeScript.
• Define engineering standards, reusable patterns, code quality, guardrails.
• Partner with UX designers to deliver accessible, responsive experiences.
• Integrate with REST/GraphQL APIs; Node.js backend-for-frontend when needed.
• Drive CI/CD, automated testing, observability, performance, security.
• Mentor engineers through technical coaching and code reviews.
• Collaborate with global product, architecture, platform, and business teams.

Skills

ReactJS

TypeScript

JavaScript

HTML5

CSS3

Architecture

CI/CD

Git

Agile

Leadership

Education

Bachelor's degree in Computer Science or related field

Tools

Next.js

Azure DevOps

Terraform

Docker

Kubernetes

GraphQL

Job description

Job Description:

• Reports to theEngineering Manager.
• Works with Eng Mgr.& Architect at high level.
• Must be abletounderstand and collaborate at high level to execute
• Location: Andover,MA(north of Boston)
• Must be onsite 2-3days per week to collaborate with manager and architect
• Duration: Oneyear.Right to hire if the employee performs well.

Duties in Short:

• Frontend TechnicalLead to guide the architecture, development, and delivery of modern webapplications and digital platforms.
• The role combineshands-on engineering with technical leadership to deliver secure, scalable,accessible, and high-performing user experiences.
• The successfulcandidate will provide technical direction, mentor engineers, and collaboratewith Product Owners, UX teams, architects, backend engineers, and DevOps teamsacross our global organization.
• Sr React Developerthat can stand alone with no support and take direction from senior engineerand senior architect and intimately know how to accomplish the needed work.
• The role is tiedto a new platform and installing a portal for internal engagement and use bythe company business units.

Key Responsibilities

• Lead frontendarchitecture and development using ReactJS and TypeScript.
• Define engineeringstandards, reusable patterns, code quality practices, and technical guardrails.
• Partner with UXdesigners to deliver intuitive, responsive, and accessible experiences usingFigma and shared design systems.
• Integrateapplications with REST and GraphQL APIs, including Node.js backend-for-frontendservices where appropriate.
• Drive CI/CD,automated testing, observability, performance, security, and productionreliability.
• Resolve complextechnical issues and proactively manage technical debt.
• Mentor engineersthrough technical coaching, architecture reviews, and code reviews.
• Collaborate withglobal product, architecture, platform, and business teams to deliverenterprise digital solutions.

Required Qualifications

• Bachelor's degreein Computer Science, Engineering, or a related field, or equivalent practicalexperience.
• 8+ years ofsoftware development experience, including experience as a Technical Lead orsenior technical contributor.
• Advanced expertisein ReactJS, TypeScript, JavaScript, HTML5, CSS3, component architecture, andstate management.
• Experiencedelivering enterprise-scale web applications with strong knowledge ofperformance, scalability, accessibility, and secure development.
• Experienceintegrating REST and/or GraphQL APIs; working knowledge of Node.js ispreferred.
• Hands-onexperience with CI/CD, Git, automated testing, and modern DevOps practices.
• Ability toinfluence technical decisions, communicate clearly, and lead across teams in anAgile environment.

Preferred Qualifications

• Experience withNext.js, micro-frontends, monorepos, design systems, or reusable componentlibraries.
• Experience withAzure, Azure DevOps, Terraform, GitHub Actions, Docker, or Kubernetes.
• Strong productmindset and ability to balance user experience, technical quality, businessvalue, and delivery speed.

Leadership Expectations

• Own outcomesacross delivery, technical quality, system health, and maintainability.

• Set frontend direction and raise the bar for engineering excellenceacross teams.

Requirements

Required Qualifications

• Bachelor's degreein Computer Science, Engineering, or a related field, or equivalent practicalexperience.
• 8+ years ofsoftware development experience, including experience as a Technical Lead orsenior technical contributor.
• Advanced expertisein ReactJS, TypeScript, JavaScript, HTML5, CSS3, component architecture, andstate management.
• Experiencedelivering enterprise-scale web applications with strong knowledge ofperformance, scalability, accessibility, and secure development.
• Experienceintegrating REST and/or GraphQL APIs; working knowledge of Node.js ispreferred.
• Hands-onexperience with CI/CD, Git, automated testing, and modern DevOps practices.
• Ability toinfluence technical decisions, communicate clearly, and lead across teams in anAgile environment.

Preferred Qualifications

• Experience withNext.js, micro-frontends, monorepos, design systems, or reusable componentlibraries.
• Experience withAzure, Azure DevOps, Terraform, GitHub Actions, Docker, or Kubernetes.
• Strong productmindset and ability to balance user experience, technical quality, businessvalue, and delivery speed.