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Lead Full-Stack Engineer (Ruby on Rails, React, TypeScript)

Engineering | Remote | Full Time

Job Description

JOB TYPE: Freelance, Contract Position - No agencies (See notes below)

LOCATION: Remote (TimeZone: Must be able to commit to a full work-day on PST (Americas preferred). 

HOURLY RANGE: Our client is looking to pay $90-130 USD / HR

ESTIMATED DURATION: 40Hrs/Week - 2-month project with high likelihood of long term extension. 


Braintrust ( is a user-controlled talent network, where you keep 100% of what you earn and actually get to own the platform. We've been onboarding some big clients and specifically need a Lead Full-Stack engineer for our client.  

 We are looking for a Lead Full-Stack Engineer to work directly with our high-profile Bay Area clients. From new skills to new products, clients come to turn their vision for change into reality. You’ll join a team of experts who are granted the autonomy to make high-impact decisions with a variety of clients, including industry leaders.

This is both a strategic and execution role in which clients will benefit from your hands-on expertise managing the full product development lifecycle. Personal flexibility in work and life is something we protect and we invest in our team members to continue growing and learning

Why We Need You Now

Our Engineering practice is growing! Our primary engagement with a client is a full cross-functional team, including product, design, and engineering. We have new development opportunities in Cupertino and San Francisco which will benefit from an experienced Lead Full-Stack Engineer.

Responsibilities Include

  • Full stack web application development, writing features in Ruby/Node.js, React, TypeScript, CSS, and HTML (from the DB to the browser)
  • Support the exploration and implementation of performance improvements for the systems we run
  • Provide Ruby on Rails/Node.js leadership to the team as well as other engineers on our clients’ teams
  • Mentor junior developers
  • Work closely with Product and Design to define, refine, and decompose stories in the backlog
  • Collaborate on subsequent projects and teams as we finish projects
  • Baseline new engagements by building upon lessons learned from prior projects
  • Use version control (Git) for versioning application feature or configuration changes
  • Tackle complex, Hands-on technical challenges and perform research when dealing with unknowns
  • Work with the DevOps team to automate the setup of the jobs in Jenkins (or other CI/CD products) as a self-service to developers and also uplift skills around creating a CI/CD ecosystem
  • Perform deep investigations to isolate and solve complex issues for online services
  • Provide recommendations for de-risking the design and implementation approach with your team
  • Deliver work in 1 week sprints
  • Demo work to team members and stakeholders
  • Write unit and functional tests to support a healthy CI/CD pipeline

Required Experience

  • 5+ years working with HTML, CSS, JavaScript/TypeScript
  • 3+ years writing tests with Cucumber, RSpec, jest, BDD & TDD best practices
  • 5+ years working with Ruby on Rails and/or Node.js applications running in a production environment
  • 3+ years working with SQL (MySQL or Postgres)

Ideal Candidate

  • BS/BA Degree in Computer Science or Engineering
  • 7+ years of developing and coding end-to-end Web applications
  • 5+ years working in Lean / Agile development processes (TDD/ATDD, Pairing, Sprints, CI/CD)
  • Demonstrated experience in the full software development lifecycle including functional and technical specifications, implementation, QA, deployment, and maintenance
  • Experience with both Ruby and Node.js
  • Experience with TypeScript
  • Experience with Python
  • Experience building and using component libraries

About the Technical Environment

  • Openstack, AWS and GCP clouds
  • Jenkins and CircleCI
  • Jira, PivotalTracker, Trello
  • Github on/off premise
  • +10k to Millions of active users
  • Serving a customer base of Fortune 100 companies

Qualified candidates will be invited to do a screening interview with the Braintrust staff. We will answer your questions about the project, and our platform.  If we determine it is the right fit for both parties, we'll invite you to join the platform and create a profile to apply directly for this project.  

C2C Candidates: This role is not available to C2C candidates working with an agency. If you are a professional contractor who has created an LLC/corp around their consulting practice, this is well aligned with Braintrust and we’d welcome your application.  

Braintrust values the multitude of talents and perspectives that a diverse workforce brings. All qualified applicants will receive consideration for employment without regard to race, national origin, religion, age, color, sex, sexual orientation, gender identity, disability, or protected veteran status.