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Lead JavaScript React Developer

Big Ladder Software in Denver, CO 0 mi javascript reactjs react-redux css3 rest

Perhaps in a past life you were a mechanical engineer or energy modeler that was drawn into the intriguing world of web programming and software development long ago. Maybe you have a degree in physics or mathematics but somewhere along the way you became more excited about creating the software tools rather than using them. Or possibly you’re just a really talented web developer that drives a Prius and loves to recycle. You are now an encyclopedia of programming knowledge and web wisdom accrued over the years. So what’s missing? Maybe you’ve been working at Internetz Inc. where you and a horde of other developers try to maximize the clicks while hanging on for that mercurial, next round of VC funding. Somewhere in the back of your mind, you wonder if it might be possible to put your skills to good use for a higher purpose… What if you could enjoy the challenge of interesting, creative work, while also having a meaningful impact on the planet? What if you could play a major role in a small, but growing, dynamic team of mechanical engineers, scientists, and programmers? Sound like you?


This job is a full-time position at our headquarters in downtown Denver. If hired, responsibilities would include:

  • Reenvisioning a legacy application into a stunning, modern JavaScript web application

  • Developing web-based user interfaces for energy modeling tools

  • Redesigning and updating company websites (bigladdersoftware.com, unmethours.com).

Minimum Qualifications

To be considered for the job, you should be able to demonstrate the following minimum qualifications:

  • Minimum three years professional experience as a front-end JavaScript developer

  • Experience leading the development of a significant web application project

  • Experience with systems integration using REST, SOAP, and other APIs

  • Strong understanding of the fundamentals of programming

  • Excellent skills and proven experience with JavaScript, HTML5, and CSS3

  • Ability to rapidly implement single-page applications from design specs

  • Experience using React and Redux libraries for complex applications

  • Experience integrating with databases and web services in the middle of the stack

  • Familiarity with full-stack web development and application deployment

  • Experience with version control systems (preferably Git)

  • Excellent communication and people skills.

Preferred Qualifications

The following qualifications are not required but will help your application stand out from the crowd:

  • Background in energy/building science, energy modeling, physics, or mathematics

  • Experience with UI/UX design

  • Experience with web application testing frameworks

  • Experience with data visualization and/or charting libraries (D3, etc.)

  • Experience with scripting languages (Ruby, Python, etc.)

  • Experience with open-source software development.


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Jobs farther away

Senior React Developer

Justuno is a profitable marketing software company focused on delivering the highest quality product and customer experience to ensure long term sustainable growth. Our services serve 100s of millions of users and billions of requests each month.

Currently our team is mostly Full Stack Developers that lean more toward backend work. We want to split our team and have someone lead our frontend development as we modernize our platform and add new exciting features for our customers.

We have a sane interview process without whiteboarding or questions about algorithms unrelated to frontend development work.


  • 2+ Years React JS Experience

  • 2+ Years HTML/Responsive CSS Experience

  • Passionate about React and Frontend Development

  • Deep understanding of promises and REST

  • Previous experience conducting code reviews and mentoring less senior developers

  • Ability to take wireframes or designs and translate them into high quality user interfaces.

  • Knowledge of React best practices and configuration

  • Ability to read and modify server side code when necessary

  • Experience building large and complex SPA with multiple stakeholders and teams.

Bonus Points:

  • A deep understanding of webpack and more advanced features such as code splitting and tree shaking.

  • Experience with charting libraries that Justuno uses on our analytics platforms such as D3 or Highcharts.

  • Understanding of state management systems such as Redux

  • Understanding of Flow or Typescript and appropriate build processes.

  • Experience setting organization wide frontend standards for component and style reuse.


  • Developing new features in React while working closely with API & Design teams.

  • Ensuring high quality code is delivered on time and on spec

  • Ownership of frontend code and standards


Senior Software Engineer- Full Stack (SF or Austin)

*** Locations: San Francisco, CA or Austin, TX

**About GoodTime **

GoodTime raised $7.5M to date and set out to make interviews effective. It uses automation and AI to provide efficient scheduling, branded experience for candidates and hiring managers, diversified interview panels and actionable interview metrics for talent leaders. Its is revolutionizing the way companies like Airbnb, Box, Dropbox, Shopify, Twitch and Stripe recruit!

**The Role **

We are looking for an experienced Full Stack Engineer who is passionate about building a world-class product . You will join a dynamic and fast-paced environment and work with other talented engineers to develop and enhance the GoodTime platform.


  • BS degree in Computer Science, similar technical field of study or equivalent practical experience

  • 7+ years experience in a software engineering role

  • Great engineering skills, strong CS fundamentals and elegance in your work

  • Very comfortable in at least one language (i.e. Javascript, Python, Ruby, Go) and proficient in Javascript

  • Love working with data and not afraid to use it to prove ideas right or wrong

**Bonus: **

  • Are comfortable writing apps in React and Node.js

  • Have the ambition and drive to build business solutions to solve NP-C problems

You will love it here if

  • You are a self-starter who loves to solve challenging problems

  • You are ambitious, driven and competitive by nature

  • You enjoy building scalable hiring processes

**Benefits **

  • Competitive compensation

  • Full Benefits - health, vision, and dental

  • Generous Paid Time off

  • Fully stocked pantry and bar

  • Competitive pre IPO equity

Our Core values

  • Always be learning: Enjoy learning something new whether it be a new skill set or a delightful new hobby

  • Perseverance: Have a "Do whatever it takes" mindset when faced with hard problems

  • Ownership: Have a strong sense of ownership for the work you do

  • Introspection: Constantly strive to improve yourself through self-evaluation and open-minded consideration for others' candid feedback


Senior JavaScript Engineer

Squarespace is seeking talented JavaScript engineers with strong design sensibilities and a desire to create interfaces that are a pleasure to use.

The Frontend team at Squarespace is responsible for building one of the most advanced interfaces on the web. With it, our customers are able to easily create beautiful interactive websites and stores. If you are a Frontend Engineer who strives to push the envelope with what is possible in a web browser, we want to hear from you! This role will report to the Product Engineering Team Lead in our New York City headquarters.


  • Design and build new features into the Squarespace interface

  • Take a lead role with other engineers and designers to deliver strong customer-focused experiences

  • Keep our product up to date with the latest frontend technologies such as React and ES2015+

  • Practice disciplined software engineering (e.g. automated testing, code reviews, and writing beautiful, pragmatic code)

  • Actively contribute to team and company standards

  • Mentor junior team members


  • Strong JavaScript development skills, understanding of new ES6 concepts, and proficiency in React, Angular, or other modern JS frameworks

  • Extensive experience developing large-scale application software

  • Have full knowledge of the DOM, new HTML5 constructs, and CSS3

  • Have experience with Single Page Application development

  • Keep up to date with the newest technologies

  • Develop features and create fulfilling user experiences

  • A strong understanding of, and practical experience with, web application development

  • A sincere commitment to crafting readable and reliable code

  • 5+ years of industry experience


Front End Developer


We are looking for a Front End Engineer (React) to join us and be a key player in the design, coding, testing and deployment of technical output for one of our key clients!

You will need to be agile, fluid and adaptable. To be successful in this role, you should have extensive exposure to and experience with React in production environments, have a strong understanding of data structures and algorithms, and be an effective communicator when articulating the design and architecture of the entire system. You should be comfortable with architecting React applications from scratch, multiple methods of managing app state, the pros and cons of functional vs. class components, writing your own higher-order components, assessing and selecting from third-party libraries vs. choosing to build internally, and using libraries of existing components to build pixel-perfect responsive pages.


  • Extensive exposure to React in production environments

  • Effectively delegate and mentor junior engineers doing code reviews resulting in up leveling the skill sets for the entire team

  • Build usable components and front-end libraries for future use

  • Translating designs and wire-frames into high quality code

HFC is a good fit for entrepreneurially-minded doers that learn and adapt quickly and have a passion for what they do. What we look for is someone with a great attitude, experience with turning ideas into fully-fledged products. If this sounds like you, send us through your application including a link to your portfolio!