ButterflyMX Inc. logo

Senior Fullstack Engineer

Job Overview

Location

Indiana, USA

Job Type

Full-time

Category

Full-Stack Engineer

Date Posted

March 4, 2026

Full Job Description

📋 Description

  • • Join ButterflyMX Inc. as a Senior Full Stack Engineer and play a pivotal role in revolutionizing how people access the buildings they live and work in. Our mission is to empower individuals to effortlessly open and manage doors and gates using their smartphones, a solution already trusted in over 20,000+ multifamily, commercial, gated communities, and student-housing properties globally. We are seeking a passionate, collaborative, and ai-forward technologist to contribute to building world-class products for the built world.
  • • In this role, you will be instrumental in designing, building, and evolving the robust APIs and services that form the backbone of our innovative products. You will partner closely with Product, Design, and other Engineering teams, bringing a customer-first mindset to every stage of the development lifecycle. This is an opportunity to lead large-scale projects from their initial ideation through to successful launch, ensuring efficiency, reusability, reliability, and testability in every line of code.
  • • Your responsibilities will extend to identifying performance bottlenecks and bugs, devising effective solutions, and implementing optimizations to ensure our systems run smoothly and efficiently. You will be comfortable navigating and contributing to both the front-end and back-end layers of our architecture, implementing sophisticated patterns and systems that enable independently deployable full-stack services. This granular approach ensures that our services are developed and deployed with a level of granularity that aligns with team composition and maximizes business value.
  • • A key aspect of this role involves maintaining high standards of code quality, organization, and automation. You will contribute to the creation and improvement of comprehensive documentation, ensuring knowledge is shared effectively across the team. As a Senior Engineer, you will lead by example, demonstrating dedication, passion, and flexibility as a technologist committed to continuously improving code quality, design principles, and overall system architecture.
  • • You will also play a crucial part in defining, documenting, evolving, and evangelizing high engineering standards and best practices across multiple domains within the engineering department. This includes championing Agile methodologies, advocating for the value of well-written and clearly defined user stories, and fostering an environment of continuous learning and improvement.
  • • We are looking for an individual who is motivated by the desire to learn, collaborate, and take ownership. You should be focused on delivering tangible improvements and understanding what truly drives business success. A user-focused approach is essential, with a keen understanding of how your code impacts the user experience in terms of performance, security, and usability. You will be passionate about frequent value delivery, working closely with product owners, and embracing Minimum Viable Products (MVPs) and tight build-measure-learn loops to maximize value.
  • • Furthermore, this role requires a leader who genuinely cares about mentoring and guiding other engineers, fostering their growth and development. We are an AI-forward organization, and a proven ability to leverage AI tools in both professional and personal settings to optimize efficiency is crucial. You will be well-versed in the disciplines of security, reliability, and scalability, ensuring our products are not only functional but also robust and future-proof. An open-minded approach to selecting the right tool for each specific job is highly valued, alongside a deep understanding of testing methodologies and their application.
  • • This is a unique opportunity to make a significant impact on a growing company that is transforming the real estate industry. If you are a seasoned engineer with a passion for building scalable, secure, and user-centric solutions, and you thrive in a collaborative, fast-paced, and results-oriented environment, we encourage you to apply.

Skills & Technologies

JavaScript
TypeScript
AWS
Azure
Docker
Full Stack
Senior
Remote

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About ButterflyMX Inc.

ButterflyMX Inc. provides cloud-based access control and intercom systems for multifamily, commercial, and student housing properties. Its platform replaces legacy intercoms with smartphone-based entry, supports video calling, delivery PINs, and integrations with property management software. Founded in 2014, the company serves over 10,000 properties across North America.

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