Senior Backend Engineer

Zero21
Philadelphia, PA

Hi, thanks for checking out our job board!

If you're an entrepreneurial-minded builder who loves to work with great people to solve wicked problems that have a meaningful impact, read on to see if this position might be a good fit for you!

The Company

Ritten.io is building modern software for addiction treatment - a largely underserved area in healthcare technology and a huge problem in America. Our mission is to enable better outcomes by providing modern, innovative tools to addiction treatment professionals.

We're an early stage, venture-backed company with a remote-first culture. Founded December 2020, we're headquartered in Philly and have engineers in NYC, Philly, LA, and TX.

The Role

We are building a unified software platform for treatment centers to streamline their workflows and improve the patient and clinician experience. We partner with providers across all levels of care to deliver a first-of-its-kind practice management platform built for the complex and specific needs of addiction treatment.

Using modern tools and technologies which include React, Typescript, Golang, PostgreSQL, Google Cloud, Terraform, Github, etc., we build software in a fast-paced environment with a focus on shipping code. Our team is cross-functional where Engineering is as much a part of figuring out what to build as Product and Design.

As an early member of the team you’ll receive meaningful equity, have the opportunity to build lots of software, and help shape our company culture.

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What We're Looking For:
  • Prior professional experience building software (at least 4 years)
  • Prior professional experience with Golang (at least 2 years)
  • Prior professional experience building enterprise software
  • Prior professional experience leading projects as an engineer
  • Excellent communication and collaboration skills

Benefits:
  • Health insurance
  • Dental benefits
  • Vision benefits
  • Unlimited paid time off

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About Zero21

As recruiters helping to build the next generation of industry disruptors, we are committed to expanding the startup ecosystem so that exceptional talent from diverse communities can gain greater access to more early stage companies.

We work only with equal opportunity employers who welcome candidates from underrepresented, underestimated, and traditionally overlooked communities to further diversity, equity, and inclusion in the next cohort of industry-disrupting unicorns.

To all recruitment agencies: Zero21 does not accept agency resumes. Please do not forward resumes to our jobs alias or our team members. Zero21 is not responsible for any fees related to unsolicited resumes.

Posted 2025-09-14

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