Full-Stack JS Developer Freelance

Synerit for Client


Our client is not your typical “work hard / play hard” start-up. They are responsible adults who value personal and professional growth equally. They take care of themselves, their families, their customers and one another. They believe in sustainable and diverse approaches to work and life, because optimizing for the long-term is the best path to success. As a team, they built multi-million dollar products with this balance in mind.

As a founding team member, you’ll wear multiple hats, embrace ambiguity, and take charge leading complex projects. You’ll have the support of an experienced team who’ve built multi-million dollar products and services. This is exceptionally challenging work, but will be the most meaningful and rewarding of your career.

Their office is in San Francisco near Caltrain. They offer competitive salaries, meaningful equity, and generous health, dental, vision, and fitness reimbursement benefits.


As a full-stack engineer, you’ll be working with us in all aspects of the product, from its core infrastructure to its custom front-end. This includes architecting systems to integrate with external services, building a full-featured web editor, and choreographing email systems and protocols. Our client will leave it largely up to you to evolve the stack as you see fit. They eagerly participate in open source development and will encourage you to do the same.


  • Architect the next generation of the Client’s SDK: supporting rich communications apps that work on a broad spectrum of clients.
  • Build features for the client’s desktop Electron app built in Meteor.js
  • Scale client’s backend service to send many millions of messages a day
  • Maintain an elastic distributed infrastructure built on top of AWS
  • Build large scale data processing pipelines for indexing content
  • Continuously find opportunities to improve performance, and increase reliability& quality


  • 3+ Full-stack JS developer experience
  • Fluency in English


  • ES6,Backbone, NodeJS, Jasmine, Express, Mongo DB, Redis, Meteor JS, Electron

Your specialization is less important than your ability to learn fast and adapt to shifting technologies. Our client is especially fond of people who:

  • Focus on project goals, not just writing code.
  • Iterate until customers love what you’ve built, and pay for it.
  • Have a hacker mindset and master the fine art of balancing time, features, and quality of code. You know when to unit test and when to “just ship it”.
  • Strive to grow personally and professionally, beyond just expanding technical abilities.
  • Love to experiment with new technology and share knowledge with the team.
  • Represent the team and product at conferences.

If you are a member of an under-represented group in technology, we strongly encourage you to APPLY.


Job Overview

  • Date Posted: Posted 3 years ago
  • Location: USA
  • Job Title: Full-Stack JS Developer
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