Find your next job at a growing startup

Senior Software Engineer

120Water

120Water

Software Engineering
Zionsville, IN, USA
Posted on Dec 17, 2025

Job Title: Senior Software Engineer

Reports To: Lead Software Engineer

Department: Product & Engineering

FLSA: Exempt

About us:

120Water is the fastest growing digital water company in the country. If you want to be on a winning team that provides transformative solutions to protect public health...you’ve come to the right place.

Our mission is to rapidly build and sell our Digital Water Cloud’s software, kits, and services to government agencies, public water systems and facilities who need to transform how they manage their water programs.

A winning candidate will demonstrate 120Water core values:

  • Be complex problem solvers
  • Respectfully push the boundaries
  • Deliver value with quality, precision and speed
  • Be accountable all the time
  • Celebrate the journey together

Your impact:

We are looking for senior software engineers to help scale our platform. This role is full stack development focused and ranges from building features which you would help to scope, to scalable microservices, to building and enhancing our APIs for integrations as well as front-end UI development.

You will evangelize 120Water by fostering strong software delivery for not only our customers but also our internal stakeholders and partners through your ownership of our software development lifecycle.

What you’ll do:

  • Full stack development (Node, React)
  • Build new features, components, microservices which you will help to scope
  • Build APIs to enable integrations with our platform
  • Conduct code reviews

What you bring:

  • 5+ years of general web or platform development experience with web technologies (React preferred)
  • 5+ years of Node.js or Java to build dependable and scalable services
  • Strong knowledge of object-oriented design principles and methodologies
  • Interest and ability to mentor other engineers
  • You enjoy start-up / scale-up fast pace growth

Nice to have:

  • Experience building multi-tenant SaaS software
  • Relational databases with experience in MS SQL Server and/or Postgresql
  • Familiarity with AWS
  • Familiarity with Kubernetes

Our tech stack:

  • TypeScript
  • Node.js
  • React
  • Java
  • AWS
  • Kubernetes
  • SQL Server
  • Postgresql