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Senior Backend Engineer

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Founded in 2014, ButterflyMX is on a mission to empower people to open and manage doors & gates from a smartphone. Our products are installed in more than 10,000+ multifamily, commercial, gated communities, and student-housing properties worldwide, including properties developed, owned, and managed by the most trusted names in real estate.

Our features are designed for developers, owners, property managers, and tenants. And our products lower operating costs and improve tenant satisfaction. Developers and owners no longer need to run building wiring or install in-unit hardware. Property managers can grant building access, revoke permissions, and review entry logs from an online dashboard. Residents can open doors from their smartphones, issue visitor access, and see who is trying to enter the building.

Fantastic people are the key to our success. As a distributed, primarily remote workforce, we’re looking for more intelligent, passionate, collaborative, and down-to-earth individuals to join our growing team. Our culture is transparent and flexible; our benefits range from a 401(k) match to quarterly stipends for self-care. While we work incredibly hard to improve the experience of everyone who lives, works, and visits our communities, we always have time for a good laugh.

ButterflyMX is looking for a Senior Backend Engineer to join our stellar team that focuses on building world class products for the built world. Our mission is to revolutionize how people access the buildings that they live and work in. This is a key and highly visible role within our software engineering group, with an opportunity to make highly impactful decisions that will have lasting implications for our products and our company. The Senior Backend Engineer will have a guiding hand in the architecture, creation, and evolution of backend services that power all of our products.


  • Partner with Product, Design, and other Engineering teams to help design, build, and evolve the APIs and services that power our products
  • Lead large-scale projects from ideation to launch with a customer-first mindset
  • Design, build, and maintain efficient, reusable, reliable and testable code
  • Identify bottlenecks and bugs, devise solutions and propose optimizations
  • Implement patterns and systems allowing for independently deployable full-stack services at a level of granularity appropriate for team composition and business value
  • Help maintain code quality, organization and automatization
  • Writing new and improving current documentation
  • Lead by example for other members of the team as a dedicated, passionate, and flexible technologist who is constantly looking for the ideal solution to a problem
  • Help define, document, evolve, and evangelize high engineering standards and best practices across multiple areas

Who You Are

  • Motivated by the desire to learn and collaborate, to own and improve, and to focus on what helps the business succeed
  • Well versed in the disciplines of security, reliability, and scalability
  • Well versed with Agile methodology and who believes in the value of a well written and appropriately defined user story
  • Language-agnostic with an open-minded approach to choosing the right tool for the job
  • User-focused with a keen sense of how your code will impact the user’s experience in terms of performance, security and usability
  • Passionate about frequent value delivery through collaboration with product owners, preferring MVPs and tight build-measure-learn loops to maximize value
  • Someone who truly cares about leading and mentoring engineers


  • 5+ years of professional development experience
  • 3+ years of professional development experience in Ruby on Rails
  • 2+ years of professional development experience in TypeScript, JavaScript
  • Strong experience with automated CI/CD pipelines
  • Strong experience working in and advocating for Agile environments
  • Deep understanding of testing and what, when and how to test
  • Extensive experience with developing and maintaining APIs, as well as integrating with 3rd party APIs
  • Hands on experience working in a Distributed/Cloud-based environment (e.g. Amazon EC2/ECS, Lambdas, No-SQL DB, Azure, etc.) within a service-oriented architecture
  • Experience with using MySQL and PostgreSQL databases
  • Experience with using Docker and development in a dockerized environment 
  • Experience with managing security for Linux/AWS/Docker environments 
  • Excellent verbal and written communication and collaboration skills to effectively communicate with both business and technical teams
  • Comfortable working in a fast-paced, results-oriented environment

As a Plus:

  • Experience with the following technologies:
  • GraphQL
  • Familiarity with development for IoT devices


  • Comprehensive Medical (ButterflyMX covers 90% of the cost) starting day 1
  • Dental and Vision plans (ButterflyMX covers 100% of the cost) starting day 1
  • 401(k) plan with a match
  • 13 paid holidays and 25 days of PTO
  • Paid Family Leave
  • Employee Assistance Program
  • Quarterly self-care stipends
  • HealthAdvocacy Program
  • Access to optional benefits, including pre-tax flexible healthcare spending accounts (FSA and HSA), Dependent Care FSA, and Commuter Benefits, as well as optional Supplemental Life, AD&D, Hospital Indemnity, Disability, Legal, Accident, Critical Illness, Pet, and Personal Liability Insurance
  • Collaborative, dynamic work environment filled with kind, intelligent people who are working hard on an industry-defining product

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