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Senior Javascript Engineer Jobs in Boston, MA (NOW HIRING)

AlleyCorp

Senior Software Engineer

Boston, MA · On-site

$160 - $185/hr

  • Medical

  • PTO

About the Role We are looking for an experienced Senior Engineer to join our Platform team -- a ... Mainly TypeScript / JavaScript; subsystems may use other languages * Cloud & Infrastructure: AWS ...

Xometry

Senior Software Engineer

Waltham, MA · Hybrid

$132K - $174K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Xometry is seeking a Senior Software Engineer to join our software engineering organization. In ... Reading, writing, and reviewing code written in HTML, Typescript/Javascript/React, Python, and Rust

Nvidia

Senior Fullstack Software Engineer

Westford, MA · Hybrid

$127K - $167K/yr

As a senior software engineer, you will craft highly efficient software to automate and facilitate ... Develop web tools in Golang, typescript, and javascript to manage our product definitions at the ...

Tive

Senior Software Engineer

Boston, MA · On-site

$133K - $175K/yr

As a Senior Software Engineer, you will mentor a team while contributing to the development of a ... NET Core and Angular • Proficiency with front end languages such as HTML, CSS, JavaScript, and ...

Deloitte

Senior Software Engineer with Secret

Boston, MA · On-site

$133K - $175K/yr

The Senior Engineering Management Specialist helps coordinate cross-functional teams, track ... Build and maintain software solutions using Java, Python, JavaScript Object Notation, YAML, and ...

Veracode

Sr. Software Engineer - Integrations

Burlington, MA · On-site

$133K - $175K/yr

Senior Software Engineer sought by Veracode, Inc. to develop 3rd party integrations with our ... HTML, CSS, JavaScript * Developing integrations * Apply * View All Jobs Careers Veracode was ...

Moderna Therapeutics

Senior AI Engineer

Cambridge, MA · On-site

$145.90 - $234.20/hr

  • Medical

  • PTO

This senior individual‑contributor role sets architecture, codes critical components, establishes ... Hands‑on front‑end engineering experience with TypeScript/JavaScript and a modern framework ...

Alumni Ventures

Senior Software Engineer

Andover, MA · On-site

$123K - $163K/yr

They are seeking a Senior Software Engineer to solve complex business problems through software ... Javascript/Node.js, Python, or both • Experience working with relational databases such as ...

Moderna Therapeutics

Senior AI Engineer

Cambridge, MA · On-site

$114K - $156K/yr

  • PTO

This is a senior individual contributor role that sets architecture, codes critical components ... Hands-on frontend engineering experience with TypeScript/JavaScript and a modern framework such as ...

Moderna, Inc.

Senior AI Engineer

Cambridge, MA · On-site

$114K - $156K/yr

  • PTO

This is a senior individual contributor role that sets architecture, codes critical components ... Hands-on frontend engineering experience with TypeScript/JavaScript and a modern framework such as ...

Initial Therapeutics, Inc.

Senior AI Engineer

Cambridge, MA · On-site

$145.90 - $234.20/hr

  • PTO

This is a senior individual contributor role that sets architecture, codes critical components ... Hands‑on frontend engineering experience with TypeScript/JavaScript and a modern framework such ...

NAVA Software Solutions

Sr.Net Developer

Beverly, MA · On-site

$60.25 - $79.50/hr

Net Developer Details: Sr.Net Developer Duration: Full time/Direct Hire Location: Beverly, MA ... Familiarity with AngularJS/JavaScript Development. * Familiarity with ERP/CRM Software.

Blitzy

Senior Front End Engineer

Cambridge, MA · On-site

$150K - $185K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

Areas of Ownership As our Senior Frontend Engineer and technical lead, you'll own: * Frontend ... Expert-level knowledge of modern JavaScript/TypeScript with deep understanding of language features ...

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Senior Javascript Engineer information

See Boston, MA salary details

$135.8K

$182.1K

$207.5K

How much do senior javascript engineer jobs pay per year?

As of Aug 16, 2026, the average yearly pay for senior javascript engineer in Boston, MA is $182,059.00, according to ZipRecruiter salary data. Most workers in this role earn between $169,500.00 and $196,100.00 per year, depending on experience, location, and employer.

What does a senior JavaScript engineer do?

A Senior JavaScript Engineer is responsible for designing, developing, and maintaining complex web applications using JavaScript and related technologies. They often lead development teams, make architectural decisions, and ensure best coding practices are followed. In addition to writing code, they may mentor junior developers, review code for quality, and collaborate with cross-functional teams to deliver high-quality software solutions.

What are some common challenges faced by senior JavaScript engineers when leading projects with cross-functional teams?

Senior JavaScript Engineers often encounter challenges such as aligning frontend and backend development timelines, ensuring code quality across distributed teams, and effectively communicating complex technical concepts to non-technical stakeholders. Managing dependencies between various team members and integrating new technologies or frameworks can also present difficulties. Successful engineers overcome these challenges by fostering clear communication, implementing robust documentation, and promoting collaborative problem-solving within agile workflows.

What are the key skills and qualifications needed to thrive as a senior JavaScript engineer?

To thrive as a Senior Javascript Engineer, you need deep expertise in JavaScript, modern front-end frameworks (like React or Angular), and a solid grasp of software engineering principles, typically supported by a degree in computer science or equivalent experience. Familiarity with build tools (Webpack, Babel), version control systems (Git), and automated testing frameworks is crucial for efficient development. Strong problem-solving skills, effective communication, and leadership abilities help you mentor team members and collaborate on complex projects. These skills are vital for delivering high-quality, scalable applications and driving innovation within development teams.

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Senior Javascript Engineer jobs near you

Senior Full-Stack Software Engineer (JavaScript)

S&P Global, Inc.

Cambridge, MA • On-site

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 18 days ago

S&P Global rating

7.3

Company rating: 7.3 out of 10

Based on 10 frontline employees who took The Breakroom Quiz

Job description

Kensho is S&P Global's hub for AI innovation and transformation. With expertise in machine learning, natural language processing, and data discovery, we develop and deploy novel solutions to innovate and drive progress at S&P Global and its customers worldwide. Kensho's solutions and research focus on business and financial generative AI applications, agents, data retrieval APIs, data extraction, and much more.
At Kensho, we hire talented people and give them the autonomy and support needed to build amazing technology and products. We collaborate using our teammates' diverse perspectives to solve hard problems. Our communication with one another is open, honest, and efficient. We dedicate time and resources to explore new ideas, but always rooted in engineering best practices. As a result, we can innovate rapidly to produce technology that is scalable, robust, and useful.
Kensho's Applications group develops the web apps and APIs that deliver Kensho's AI capabilities to our customers. Our teams are small, product-focused, and intent on shipping high-quality code that best leverages our efforts. We're collegial, humble, and inquisitive, and we delight in learning from teammates with backgrounds, skills, and interests different from our own.
Our App Experiences team focuses on breathing life into novel ML capabilities, translating them into valuable and intuitive end-user experiences. We collaborate closely with our Product and Design teams to understand user needs, looking for creative applications and delivery mechanisms of our technology. We demo early and often, and we keep a tight iteration loop. We sweat the details when it comes to UX.
As a Senior Full-Stack Software Engineer, you will build AI-centric web applications in TypeScript ranging from experimental POCs to full-fledged product offerings. You'll have significant autonomy over technical and architectural choices, and be responsible for managing short- and long-term trade-offs. The ideal candidate loves product and views technology as a means, not an end, and is excited to collaborate across all aspects of the software development lifecycle.
Kensho states that the anticipated base salary range for the position is 150k-225k. In addition, this role is eligible for an annual incentive bonus and equity plans. At Kensho, it is not typical for an individual to be hired at or near the top of the range for their role and compensation decisions are dependent on the facts and circumstances of each case.
What You'll Do:
  • Build full-stack and SPA TypeScript applications ranging from experiments to flagship products
  • Collaborate on product decisions and communicate technical constraints and considerations
  • Own and collaborate on technology/architecture decisions and conventions
  • Teach and learn from the team and the broader organization via mentorship, code review, knowledge sharing, etc.
  • Self-sufficiently manage project priorities, estimates, and deliverables

What You'll Need:
  • At least five years of direct experience building commercial web applications in JavaScript/TypeScript
  • At least three years of that experience working directly on web UIs in a modern framework
  • At least one domain of deep technical expertise (e.g., web performance, design systems, framework knowledge, etc.)
  • Product sense, or a strong interest in developing it
  • Kind, thoughtful, and high-signal communication skills for both technical and non-technical audiences
  • Ability to translate ambiguous needs and constraints into clear technical requirements

Technologies & Tools We Use:
  • Development: TypeScript, React, Next.js, Tailwind, LangGraph, AI SDK, Drizzle
  • Ops: Git, GitHub, Amazon EKS, AWS, Sentry, Langfuse, Prometheus

At Kensho, we pride ourselves on providing top-of-market benefits, including:
  • Medical, Dental, and Vision insurance
  • 100% company paid premiums
  • Unlimited Paid Time Off
  • 26 weeks of 100% paid Parental Leave (paternity and maternity)
  • 401(k) plan with 6% employer matching
  • Generous company matching on donations to non-profit charities
  • Up to $20,000 tuition assistance toward degree programs, plus up to $4,000/year for ongoing professional education such as industry conferences
  • Plentiful snacks, drinks, and regularly catered lunches
  • Dog-friendly office (CAM office)
  • Bike sharing program memberships
  • Compassion leave and elder care leave
  • Mentoring and additional learning opportunities
  • Opportunity to expand professional network and participate in conferences and events

Recruitment Fraud Alert:
If you receive an email from a spglobalind.com domain or any other regionally based domains, it is a scam and should be reported to reportfraud@spglobal.com. S&P Global never requires any candidate to pay money for job applications, interviews, offer letters, "pre-employment training" or for equipment/delivery of equipment. Stay informed and protect yourself from recruitment fraud by reviewing our guidelines, fraudulent domains, and how to report suspicious activity here.
We are an equal opportunity employer that welcomes future Kenshins with all experiences and perspectives. Kensho is headquartered in Cambridge, MA, with an additional office location in New York City. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, or national origin.

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