Post a job — FREE
Get weekly
React jobs

Senior Software Engineer


At Replica, we provide urban planners with the tools and data necessary to deeply understand the movement of goods and people.

Replica, originally known as Model Lab, was incubated in 2017 at Sidewalk Labs, an Alphabet company on a mission to radically improve urban life. In 2019, we secured series A funding with backing from venture firms such as Innovation Endeavors, Firebrand Ventures, and Revolution’s Rise of the Rest Seed Fund. 

Today, we are a lean team with offices co-located in San Francisco, CA and Kansas City, MO and our customers come from public and private sectors across the United States.

We value our customers, believe in being resourceful, and work in service of each other to scale our product. As we build our team, we are committed to pursuing and bringing together a diverse workforce and creating an environment of inclusion. We value our differences and we encourage all to apply. We are committed to equal opportunity regardless of race, color, ancestry, religion, gender, gender identity, parental or pregnancy status, national origin, sexual orientation, age, citizenship, marital status, disability, Veteran status, or any other status protected by the laws or regulations in the locations where we operate. 

The Team

The engineering team is currently organized into two teams: data engineering and product engineering. The product engineering team owns the application code from database to web client and the infrastructure required to deploy it to our customers. Most of the engineering team is based in San Francisco, but we work with cross-functional teams in Kansas City and New York and customers across North America. 

The Role

As our engineering team grows, we are looking for a senior front-end software engineer with 3+ years of experience to help build our single page web application. As an early member on the team, you will balance speed and quality as you build out new features for our customers. 

You will collaborate with engineers, design, research and development, and customers to enable additional methods of querying and create valuable data visualizations for every customer. More specifically, here’s what you can expect to do in the role:

  • Build front-end product features inside our product so customers get value from the underlying data set. 
  • Work closely with customers to best understand their needs and respond quickly to their feedback. 
  • Collaborate with cross-functional teams at a fast growing startup. 
  • Establish testing strategy and best practices.
  • Own logging and observability frameworks.
  • Actively contribute to company culture by mentoring engineers, contributing to documentation, and actively collaborating with cross-functional groups. 
  • Technologies: React, Redux, Node JS, Express JS, Typescript, Mapbox, D3,, Python, SQL, Material UI, Mixpanel. 

What We Value

  • Empathy. You are curious and eager to learn more about our users and understand their needs. 
  • Balance. You weigh speed and quality carefully and understand the tradeoffs. 
  • A collaborative approach to problem solving. You’ve worked with cross functional teams before and you enjoy the process. 
  • Active participation. You jump in and actively engage with the team and customers to build products people use. 
  • Ability to navigate ambiguity. Things get blurry, but you persevere to find clarity and communicate effectively with your teammates to ensure clarity for all.
  • Passion. You are driven to improve the quality of life in urban environments.


  • Our people! We work as a team and are excited to contribute to city planning. 
  • Competitive salary based on experience and potential for impact.
  • Equity at an early stage startup.
  • Health benefits including medical, dental, vision, and HSA option. 
  • 401k account + employer contribution.
  • Offices in Downtown, San Francisco and Overland Park, Kansas City.
  • Flexible PTO.


If you don't think you meet all of the criteria above, but still are interested in the job, please apply. Nobody checks every box, and we're looking for someone excited to join the team.

Get weekly new jobs in your inbox