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Freelance Full Stack Developer Node Js Jobs in Massachusetts

twenty80.io

Founding Full Stack Engineer

Boston, MA · On-site +1

$150K - $190K/yr

Set up deployment pipelines, monitoring, and basic DevOps workflows * Help hire and mentor future ... React, TypeScript, Next.js * Backend: Node.js (Express/NestJS) or Python (Django/FastAPI)

Click Therapeutics

Senior Software Engineer

Boston, MA · Hybrid

$133K - $175K/yr

... stack centered on React Native and Node.js. You possess extensive experience architecting and ... full-stack software development experience, with a track record of shipping production-grade ...

Hexplora

Senior Java Full Stack Developer

Holyoke, MA · On-site

$51.50 - $66.50/hr

Title: Senior Java Full Stack Developer (Enterprise Integration & AWS) Location: Holyoke, MA(Hybrid) Seeking an experienced Senior Java Full Stack Developer with strong expertise in enterprise ...

Jobsbridge

Full Stack Web Developer

Burlington, MA · On-site

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers ... Angular.js or ReactJS with an emphasis on structuring a large web UI application using patterns ...

Jobsbridge

Full Stack Web Developer

Burlington, MA · On-site

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers ... Angular.js or ReactJS with an emphasis on structuring a large web UI application using patterns ...

Kelmar

Senior Full-Stack Developer

Wakefield, MA · On-site

Kelmar's Full-Stack Developers build and enhance web applications in Angular and Spring Boot, drive technical quality through code reviews and testing practices, and mentor junior developers as they ...

Kelmar

Senior Full-Stack Developer

Wakefield, MA · On-site

Kelmar's Full-Stack Developers build and enhance web applications in Angular and Spring Boot, drive technical quality through code reviews and testing practices, and mentor junior developers as they ...

Jobtailor

Full Stack Engineer

Boston, MA · On-site

$120 - $160/hr

* Design, develop, and maintain full-stack integrations and applications using React, TypeScript, Node.js, Next.js, and SQL * Build and manage internal tooling with the support team * Identify ...

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Freelance Full Stack Developer Node Js information

What is the difference between Freelance Full Stack Developer Node Js vs Freelance Front End Developer?

AspectFreelance Full Stack Developer Node JsFreelance Front End Developer
SkillsJavaScript, Node.js, databases, server-side & client-side developmentHTML, CSS, JavaScript, UI/UX design
Work EnvironmentBackend and frontend projects, server managementPrimarily UI/UX, website interfaces
CertificationsJavaScript, Node.js certifications often preferredHTML, CSS, JavaScript certifications
Industry UsageWeb applications, SaaS, startupsWebsite design, branding, small to large businesses

Freelance Full Stack Developers with Node.js skills handle both backend and frontend tasks, while Freelance Front End Developers focus mainly on website interfaces and user experience. The full stack role requires broader technical knowledge, especially in server-side development, whereas front end specialists concentrate on visual and interactive elements.

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Freelance Full Stack Developer Node Js jobs near you

Senior Full Stack Engineer

Sincere Corporation

Framingham, MA • On-site

$120K - $140K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 15 days ago

Job description

Sincere is looking for a Senior Full Stack Engineer to help us make our products meaningfully better. This is a high-ownership individual contributor role for a seasoned engineer who can take a broad product area, understand the customer and business needs, and ship high-quality improvements.
You will:
  • Build full-stack features across Ruby on Rails and Next.js
  • Own product initiatives end-to-end, from identifying opportunities and shaping solutions through implementation, launch, and iteration
  • Partner with product/project managers and designers to identify customer pain points, uncover product opportunities, and deliver meaningful improvements
  • Use tools like Claude Code and Codex as a core part of your workflow to explore, develop, test, and ship
  • Make practical technical decisions that balance speed, quality, maintainability, performance, and customer impact
  • Build polished, reliable, easy-to-use experiences with strong attention to UX
  • Use tools like Datadog and Mixpanel to monitor production behavior, investigate issues, and inform product decisions
  • Champion new ideas and continuously look for ways to improve our products, engineering practices, and customer experience

You are:
  • A seasoned full-stack engineer with 7+ years of professional software development experience
  • Comfortable working across our stack, including Ruby on Rails, TypeScript, React, Next.js, MySQL/Postgres, Redis, MongoDB, Sidekiq, OpenSearch, AWS, and Docker
  • Fluent with AI-assisted development tools such as Claude Code or Codex
  • Proven at building and maintaining large-scale customer-facing web applications
  • Product-minded, with strong instincts for customer needs, UX quality, business value, and technical tradeoffs
  • A self-starter who brings structure to loosely defined problems and drives them through execution
  • A strong partner to DevOps, with enough understanding of system architecture, cloud infrastructure (AWS), deployment, containerization, and infrastructure-as-code (Terraform) to collaborate effectively
  • Skilled at working in mature codebases, understanding existing architecture, and improving systems pragmatically
  • Detail-oriented, with high standards for both the code and the customer experience
  • Entrepreneurial, curious, and biased toward building, experimenting, and shipping
  • Collaborative and low-ego, with strong communication skills and pride in your craft

Benefits
Do you want to work at a growing company that invests in its team more than the average employer? Sincere is a family of brands with heart. The Company is home to Punchbowl®, Lovebird®, Timehop®, and Memento®, and builds technology that brings you closer and helps show you care to the people who matter the most. With Sincere Foundation, we support organizations that address basic needs, and envision a future where everyone has the opportunity to celebrate, recognize milestones, and honor memories. We provide a fun, casual, and innovative environment where hard work is recognized and rewarded.
What We Offer:
  • 100% Health, Dental & Vision coverage
  • 401K Plan with Profit Share
  • Annual bonus potential
  • Health & Wellness stipends
  • Paid time off plus 12 paid holidays & Summer Fridays
  • Paid parental leave
  • Childcare benefits (dependent care FSA)
  • Flexible, hybrid work environment
  • In-person, all-expenses-paid Team Summits (2X a year)
    PLEASE NOTE: Our team is primarily based in Greater Boston. We will consider applicants who reside anywhere within a 2 hour drive of the city. While this role is remote, we have occasional in-person meetings at the office (every 4-6 weeks typically).
    The base salary range for this role is $120,000 - $140,000. Actual salary may vary based on skills and experience.

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