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Javascript Front End Developer Jobs in Massachusetts

Blitzy

Senior Front End Engineer

Cambridge, MA · On-site

$150K - $185K/yr

Building advanced features like real-time collaboration, AI-powered UIs, and developer tools ... Expert-level knowledge of modern JavaScript/TypeScript with deep understanding of language features ...

SevenAI

Senior Frontend Engineer

Boston, MA · On-site

$133K - $183K/yr

We are seeking a Senior Frontend Engineer to join our core team. In this role, you'll take ... JavaScript and TypeScript. * Strong experience with frontend architecture, APIs and performance ...

7AI

Senior Frontend Engineer

Boston, MA · On-site

$133K - $183K/yr

Sevenai is seeking a Senior Frontend Engineer to join their core team, focusing on designing and ... in JavaScript and TypeScript. • Strong experience with state management, frontend architecture ...

Venus Consultancy

Senior Frontend Engineer

Cambridge, MA · On-site

$133K - $184K/yr

Senior Frontend Engineer (React.js) Team: Strategic Development Team Location: Cambridge (In-person ... Strong hands-on experience with React.js and modern JavaScript/TypeScript * Proficiency in ...

Saviance

Fullstack Developer (40% Frontend Focused)

Boston, MA · On-site

$113K - $131K/yr

Responsibilities : • Develop and maintain interactive, responsive, and user-friendly front-end applications using Java, JavaScript, and modern frameworks. • Collaborate with back-end developers ...

Horizontal Talent

Sr. Optimizely Developer

Boston, MA · Remote

$124K - $164K/yr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... Advanced frontend experience with HTML5, CSS3/SASS, and JavaScript, including Vanilla JS, ES6 ...

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All JobsJavascript Front End Developer JobsJavascript Front End Developer Jobs in Massachusetts

Javascript Front End Developer information

See Massachusetts salary details

$37

$55

$84

How much do javascript front end developer jobs pay per hour?

As of Aug 21, 2026, the average hourly pay for javascript front end developer in Massachusetts is $55.72, according to ZipRecruiter salary data. Most workers in this role earn between $42.55 and $62.21 per hour, depending on experience, location, and employer.

What does a JavaScript front end developer do?

A JavaScript Front End Developer is responsible for creating and implementing the visual and interactive elements of a website or web application that users see and interact with. They use JavaScript, along with HTML and CSS, to build responsive, user-friendly interfaces. Their work often involves collaborating with designers and back-end developers to ensure seamless functionality and a positive user experience. JavaScript Front End Developers also optimize web pages for speed and efficiency, and may use frameworks like React, Angular, or Vue.js.

What are the key skills and qualifications needed to thrive as a JavaScript front end developer, and why are they important?

To thrive as a JavaScript Front End Developer, you need proficiency in JavaScript, HTML, CSS, and a solid understanding of responsive web design, often supported by a degree in computer science or relevant experience. Familiarity with frameworks like React or Angular, version control systems like Git, and testing tools are typically required, along with knowledge of RESTful APIs. Strong problem-solving skills, attention to detail, and effective communication help developers collaborate and deliver user-friendly interfaces. These skills are essential for building high-quality, interactive web applications that meet user needs and business objectives.

What are some common challenges faced by JavaScript front end developers when working on cross-functional teams?

JavaScript Front End Developers often collaborate closely with designers, back-end developers, and product managers, which can present challenges such as aligning on design specifications, synchronizing with back-end API changes, and managing differing project priorities. Effective communication and proactive problem-solving are essential to ensure seamless integration of UI features and to address issues like inconsistent data formats or evolving design requirements. Being adaptable and maintaining clear documentation can help mitigate misunderstandings and keep the development process efficient.

What is the difference between Javascript Front End Developer vs Web Designer?

AspectJavascript Front End DeveloperWeb Designer
Primary FocusBuilding interactive, functional user interfaces using JavaScript, HTML, CSSDesigning visual layout, graphics, and user experience without extensive coding
Skills & CertificationsJavaScript, frameworks (React, Angular), HTML, CSS, version controlDesign tools (Adobe Photoshop, Sketch), UX/UI principles, basic HTML/CSS
Work EnvironmentDevelopment teams, tech companies, startups
Common UsageCreating dynamic websites and applications

While both roles contribute to website creation, Javascript Front End Developers focus on coding and functionality, whereas Web Designers emphasize visual design and user experience. Understanding these differences helps employers and job seekers target the right skills and roles in the industry.

Is JavaScript good for front-end?

JavaScript is a core technology for front-end development and is essential for creating interactive and dynamic user interfaces. Front-end developers frequently use JavaScript along with frameworks like React, Angular, or Vue.js to build responsive web applications. Proficiency in JavaScript is highly valued in front-end roles and often combined with HTML and CSS skills.

What are popular job titles related to Javascript Front End Developer jobs in MA?

For Javascript Front End Developer jobs in MA, the most frequently searched job titles are:

Javascript Front End Developer jobs near you
Infographic showing various Javascript Front End Developer job openings in Massachusetts as of August 2026, with employment types broken down into 1% As Needed, 81% Full Time, 14% Part Time, 1% Temporary, and 3% Contract. Highlights an 89% Physical, 4% Hybrid, and 7% Remote job distribution, with an average salary of $115,904 per year, or $55.7 per hour.

Senior Front End Engineer

Blitzy

Cambridge, MA • On-site

$150K - $185K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 25 days ago

Job description

About Blitzy
Blitzy is a Cambridge, MA based AI software development platform on a mission to revolutionize the software development life cycle by autonomously building custom software to unlock the next industrial revolution. We're transforming how enterprises build software, turning enterprise requirements into production-ready code with an agentic software development platform that can autonomously execute 80% of the quantum of software development work. We're backed by multiple tier 1 investors, and have proven success as founders of previous start-ups.
Location: 1 Kendall Square, Cambridge, MA (On-Site)
Compensation: $150,000 - $185,000
The Role
We're looking for an exceptional Senior Frontend Engineer to join our founding team and lead our frontend engineering efforts. You'll work directly with our CTO to build sophisticated, responsive interfaces that make complex AI capabilities accessible to enterprise developers. This is a hands-on technical leadership role where you'll architect our frontend systems, establish engineering best practices, and mentor junior engineers as we scale.
You'll be the frontend technical authority-making critical architectural decisions, building new platform features, refactoring existing systems, and defining how we approach frontend engineering at Blitzy. You're equally comfortable debugging a complex state management issue, architecting a component library from scratch, or mentoring a junior engineer through their first major feature.
What Success Looks Like
  • You architect and implement sophisticated frontend solutions that handle complex state management, real-time AI agent updates, and intuitive developer workflows.
  • You establish frontend engineering standards, patterns, and best practices that scale with our growing team.
  • You build responsive, performant interfaces that work seamlessly across browsers and devices while maintaining sub-second interaction speeds.
  • You refactor and modernize existing frontend code, eliminating technical debt while shipping new features.
  • You make architectural decisions that balance immediate product needs with long-term scalability and maintainability.
  • You mentor junior frontend engineers, conducting code reviews and elevating the team's technical capabilities.
  • You collaborate closely with product, design, and backend teams to deliver cohesive user experiences.
  • You evaluate and introduce new technologies and frameworks that improve our development velocity and product quality.
  • You maintain high standards for code quality, performance, testing, and accessibility.
  • You become a trusted technical advisor to leadership on all frontend architecture decisions.

Areas of Ownership
As our Senior Frontend Engineer and technical lead, you'll own:
  • Frontend architecture and technical decision-making for our core platform.
  • Refactoring existing frontend systems to improve performance and maintainability.
  • Building new platform features that showcase our AI capabilities to enterprise users.
  • Establishing component library and design system foundations.
  • Setting up testing frameworks and CI/CD pipelines for frontend.
  • Code review processes and engineering standards.

Growing Responsibilities
  • Mentoring and providing technical guidance to junior frontend engineers.
  • Performance optimization and monitoring systems.
  • Frontend infrastructure and build tooling improvements.
  • Cross-team collaboration on API design and integration patterns.
  • Technical documentation and onboarding processes.

Long-term Vision
  • Scaling the frontend engineering team and practices.
  • Defining frontend engineering hiring standards and interview processes.
  • Contributing to product and technical strategy discussions.
  • Building advanced features like real-time collaboration, AI-powered UIs, and developer tools.

Required Experience
  • 10+ years of frontend development experience with a proven track record of building complex, production-grade applications.
  • Expert-level knowledge of modern JavaScript/TypeScript with deep understanding of language features, patterns, and best practices.
  • Deep expertise in React.js and its ecosystem including hooks, context, performance optimization, and modern patterns.
  • Strong understanding of state management (Redux, MobX, Zustand, or similar) and when to apply different patterns.
  • Experience with modern build tools (Webpack, Vite, esbuild, etc.) and their configuration.
  • Proven ability to architect scalable frontend systems that handle complexity while remaining maintainable.
  • Experience with responsive design and cross-browser compatibility, ensuring consistent experiences across devices.
  • Strong understanding of web performance optimization including bundle size, rendering performance, and Core Web Vitals.
  • Experience with frontend testing frameworks and methodologies (Jest, React Testing Library, Playwright, Cypress).
  • Track record of technical leadership including mentoring, code reviews, and establishing engineering standards.

What Makes You Stand Out
  • Experience with GraphQL and real-time data handling (WebSockets, Server-Sent Events).
  • Knowledge of WebAssembly and its applications in frontend development.
  • Experience with micro-frontend architectures or monorepo management.
  • Contributions to open-source projects, especially in the React or JavaScript ecosystem.
  • Experience with advanced animations and complex UI interactions (Framer Motion, React Spring).
  • Deep knowledge of accessibility standards (WCAG) and practical implementation.
  • Experience with design systems at scale and component library architecture.
  • Speaking engagements or technical writing demonstrating thought leadership.
  • Experience at high-growth startups or in technical leadership roles.
  • Experience working effectively with AI coding tools (Blitzy, Copilot, Cursor, Claude, etc.) to accelerate frontend development without compromising code quality or engineering standards.
  • Proven ability to review and validate AI-generated code-identifying subtle logic errors, security gaps, and style inconsistencies that automated tools routinely miss.
  • Track record of writing precise, reusable prompts for frontend tasks including component generation, test writing, refactoring, and PR documentation to get consistent, production-ready output.
  • Experience establishing team-wide processes for AI-assisted development-defining when to use AI, how to review its output, and how to integrate it cleanly into existing PR and code review workflows.

What Makes This Role Different
  • You'll be the first dedicated frontend engineering lead, shaping the entire discipline from the ground up.
  • Direct collaboration with the CTO and founders-your architectural decisions will define how the product scales.
  • You'll build interfaces for one of the most technically ambitious AI platforms in enterprise software development.
  • Competitive compensation ($140K-$165K) with significant equity upside at an early-stage, high-growth startup.
  • Comprehensive benefits including health, dental, vision, 401(k) with match, generous PTO, and parental leave.
  • A clear path to Staff Engineer, Principal Engineer, or Engineering Manager based on your strengths.
  • Modern in-person office in Cambridge's innovation hub at 1 Kendall Square with a strong team culture.

Our Culture
Who we are:
Led by two pioneering co-founders we are one of the fastest growing companies in the U.S., creating our own category of enterprise autonomous software development. We automate thousands of hours of software development for our customers, which includes strong representation within the Fortune 500.
How we work:
We move Blitzy Fast: Time is both our company's and our clients' most precious asset. We move quickly and decisively to innovate internally and deliver exceptional software externally.
Championship Mindset: We operate like a professional sports team. We win as a team by holding ourselves and each other to high standards, collaborating in-person, and remaining focused on the mission.
Passion for Invention: We're pushing the frontier of what's possible, requiring constant innovation and iteration.
We Work for the Customer: We focus on delivering outsized value to the customers we work with and expanding those relationships into deep, meaningful partnerships.
We believe in being 'everyday athletes'-taking care of ourselves so we can bring our best minds to work. We promote great sleep, movement, and restorative activities for optimal mental performance. It makes for a happier and more productive team.
Blitzy is an equal opportunity employer committed to building a diverse and inclusive team. We believe different perspectives make us stronger.

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