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.

\n

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

\n

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 2026-05-24

Recommended Jobs

Tipstaff Pool (Part-Time)

County of Blair
Hollidaysburg, PA

Very flexible positions exist within Court Administration. We are seeking part-time hires as tipstaff who will have work assignments in the courtroom, in an office, or both. Essential duties may incl…

View Details
Posted 2026-01-14

Electrical Estimator / Project Manager

Liberty Personnel Services, Inc.
Bethlehem, PA

Job Details: ELECTRICAL ESTIMATOR / PROJECT MANAGER Lehigh Valley-based electrical construction contractor hiring for a highly organized Estimator/Project Manager with extensive experience in c…

View Details
Posted 2026-05-18

School-based Mental Health Therapist

CCRES, Educational & Behavioral Health Services
Downingtown, PA

Make a difference every day by joining CCRES as a school-based Mental Health Therapist / MHT! *** Compensation for a PA licensed Mental Health Therapist (LSW, LCSW, LPC, LMFT) is $70 per hour *** …

View Details
Posted 2025-11-12

OTR Flatbed Lease-purchase Job in Abington, PA by HMD Trucking

HMD Trucking
Abington, PA

Flatbed Lease-purchase Truck Driving Jobs In Abington, PA HMD Trucking invites experienced FLATBED OTR CDL A drivers to participate in our Lease Purchase program. This opportunity offers a fast …

View Details
Posted 2026-05-08

Health Information Technology Coordinator

Saint Joseph's University
Philadelphia, PA

Position Title: Health Information Technology Coordinator Time Type: Full time Position Summary and Qualifications: The Health Information Technology (HIT) Coordinator provides dedicat…

View Details
Posted 2026-05-21

Summer Camp Assistant Director - Paoli

Steve & Kate's Camp
Paoli, PA

Job Details Location : 19 E Central Ave, Paoli, PA 19301   Camp Dates : 6/15/2026 (Mon) - 8/21/2026 (Fri) -- (additionally, one weekend to set up, one weekend to breakdown, and an orientat…

View Details
Posted 2026-02-18

Entry-Level Field Service Technician

Express Employment
Washington, PA

Top Job Located in Washington, PA Salary: $18-$21/HR NOW HIRING: ENTRY-LEVEL FIELD SERVICE TECHNICIAN $18-$21/HR | Full-Time | 40 Hours/Week Washington, PA | T…

View Details
Posted 2026-05-23

School Psychologist

Elwyn
Philadelphia, PA

Overview: Pay Range: $70,000 to $88,000 Schedule:  Mon-Fri 8am to 4pm Join a Team That Changes Lives   For more than 170 years, Elwyn has been leading the way in supporting children, teens, …

View Details
Posted 2026-02-25

Assistant Controller

Falzone Towing Service Inc.
Wilkes Barre, PA

Falzones Towing Service, Inc., a family-owned business serving the Wilkes Barre, PA community since 1945, is recognized for its commitment to exceptional customer service, quality work, and a collabo…

View Details
Posted 2026-05-13

Commercial Lines Account Manager

Bing Recruitment
Bensalem, PA

Job Description Job Description We are seeking a dynamic and experienced Commercial Insurance Account Manager. The successful candidate will be responsible for managing a portfolio of commercial …

View Details
Posted 2026-03-21