Trusted by more than 18,000 Shopify and Shopify Plus stores—like Brooklinen, Ruggable, True Classic and Dr. Squatch—Postscript gives ecommerce brands the tools they need to run a world-class SMS marketing program. 

We’re on a mission to make SMS the number-one revenue channel for ecommerce merchants by delivering an easy-to-use platform where they can grow their subscriber list, develop and test their messaging strategy, deliver excellent customer service, and drive sales and loyalty—all in one place. We believe SMS is the most important marketing and sales channel of the decade, and that vision drives everything we do.

Postscript was founded in 2018 as a 100% remote organization. With more than 250 employees (and counting!), we’re backed by Greylock, Y Combinator, and other top investors.

The Flow Builder team is responsible for designing, developing, and supporting Postscript’s message orchestration platform. We are constantly improving on the current platform and adding new features that empower merchants to run their entire SMS business through Postscript. The Flow Builder product is experiencing fast growth and adoption leading to a number of new and exciting challenges to solve. We are looking for a motivated software engineer with an interest in building scalable and extensible products to join our growing team.  

As a Senior Backend Engineer on the Flow Builder team you will use your expertise and passion for building scalable and extensible distributed systems to help enhance our message orchestration platform, enabling our customers to engage their subscribers through conversational messaging. As a technical leader you will set the bar for the maintainability and performance of our systems. You will be given the autonomy to grow to your full potential and your work will directly impact our customers and Postscript’s bottom line.

Senior Backend Engineers at Postscript have a high impact on their team and on the wider engineering org through project leadership, technical expertise, and decision-making. As a Senior engineer you will guide your team in weighing technical constraints and business priorities to make the necessary trade-offs to deliver customer value. Our stack is currently React, Go, Python (Flask), within a mostly monolithic, AWS-managed architecture.

Your passion for building great products, especially in early-stage companies, will lead you to have a  significant impact on both our customers and business. In addition, you will have the opportunity to solve challenging problems and build out architecture and processes as we scale. 

This position is fully remote.

Primary duties

  • Architect and build highly available, extensible, and scalable platform primitives and REST APIs for external and internal customers
  • Take ownership and be creative with your solutions as you help deliver excellent products to our customers
  • Contribute to the health of the team through honest and direct feedback as we iterate and improve on our processes
  • Guide your team to make optimal technical and product design decisions
  • Identify and execute on points of scale in order to maximize throughput and efficiency
  • Mentor other engineers on best practices and growth opportunities
  • Be accountable for communicating transparently and proactively, defining scope, breaking down and estimating tasks, risk and change management

Requirements

  • A proven career as a software engineer developing backend applications and APIs, hands-on experience using Golang and Python. SaaS experience preferred
  • Experience with or exposure to migration off a monolithic architecture a plus
  • Familiarity with building, deploying, and maintaining applications on AWS services using Terraform
  • Expertise in NoSQL and SQL, and experience with database modeling (Postgres)
  • Experience building modular, flexible architectures (maximizing readability and extensibility)
  • Excellent verbal and written communication skills
  • Experience building great products (high growth, early stage tech preferred)
  • Experience coaching and mentoring engineers

What We’ll Love About You

  • Minimum 6-8 years professional software development experience
  • Experience establishing best practices in development processes 
  • Passion for early stage companies and the opportunity to be responsible for owning and improving a new, fast-growing code base
  • Great communicator and love helping others 
  • Experience establishing best practices in development processes 
  • Empathy for users 
  • Strong attention to detail
  • Fearless in your pursuit of excellent results
  • Remote work experience is a plus 

What You’ll Love About Us

  • Salary range of USD $170,000-$200,000 base plus significant equity (we do not have geo based salaries)
  • High growth startup - plenty of room for you to directly impact the company and grow your career!
  • Work from home (or wherever)
  • Fun - We’re passionate and enjoy what we do
  • Competitive compensation and opportunity for equity
  • Flexible paid time off
  • Health, dental, vision insurance

For information about how we use your personal data, please see our U.S. Job Applicant Privacy Notice

You are welcome here. Postscript is an ever-evolving place of equal employment for talented individuals.

Apply for this Job

* Required

resume chosen  
(File types: pdf, doc, docx, txt, rtf)
cover_letter chosen  
(File types: pdf, doc, docx, txt, rtf)


Postscript Demographic Questions and Categorizations

At Postscript, we are committed to creating an inclusive workplace that values diversity. We firmly believe that companies diverse in, for example, age, gender identity, race, sexual orientation, ethnicity, and perspective are better because of it. However, even beyond that belief, we simply want to strive for what's right.

For this reason, we are asking candidates to voluntarily self-identify through a few demographic questions. Our purpose in collecting this information is to help us assess our outreach efforts and diversity representation goals. Your responses will not be linked to your identity or your application, and neither recruiters nor hiring managers can see this information at an individual level. Your responses are stored in the aggregate and will not play any role in our hiring decision.  Your decision to participate or not participate in this survey will have no impact on your candidacy at Postscript.

What Race/Ethnicity do you identify as? (select all that apply) *









What gender do you identify as? (Select one) *






Do you consider yourself a part of the LGBTQ+ community? (Select one) *




Which age group are you in? (Select one) *




Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in Postscript’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.


Voluntary Self-Identification of Disability

Form CC-305
Page 1 of 1
OMB Control Number 1250-0005
Expires 04/30/2026

Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.


Enter the verification code sent to to confirm you are not a robot, then submit your application.

This application was flagged as potential bot traffic. To resubmit your application, turn off any VPNs, clear the browser's cache and cookies, or try another browser. If you still can't submit it, contact our support team through the help center.