Principal AI-Native Software Engineer
ButterflyMX2 months ago
Base Salary
$215k - $250k/yr
Responsibilities
- Partner with Product to clarify requirements, outcomes, priorities, constraints, acceptance criteria, risks, dependencies, and tradeoffs.
- Partner with Design to translate intended workflows into complete, functional product experiences.
- Own approved product initiatives from technical design and implementation through deployment, infrastructure management, operation, and post-launch improvement.
- Design, build, and maintain efficient, reliable, reusable, testable, secure, and production-ready software.
- Operate Claude Code as a primary development environment and orchestrate multiple agents, sub-agents, worktrees, branches, and development sessions.
- Create reusable Claude Code skills, commands, hooks, context files, agent instructions, feedback loops, and development workflows.
- Use agents for system investigation, planning, coding, testing, code review, pull-request preparation, releases, infrastructure provisioning, deployment, monitoring, and documentation.
- Establish quality gates and methods to measure the effectiveness, quality, cost, and speed of AI-native engineering workflows.
- Review agent-generated code at Principal or Staff engineering standards and reject unnecessary complexity, abstraction, duplication, security weaknesses, and oversized changes.
- Debug issues across application code, infrastructure, data systems, third-party services, and development tooling.
- Work across Ruby on Rails, TypeScript/Node.js, MongoDB, relational data, AWS, GCP, Android, iOS, Go, frontend, backend, mobile, infrastructure, integrations, and internal tooling.
- Manage infrastructure and deployment workflows across AWS and GCP while improving legacy systems.
Requirements
- Significant experience at the Staff, Principal, or equivalent engineering level and 8+ years of professional software development experience.
- Demonstrated ability to independently deliver complex production software with Product and Design teams.
- Expert-level, substantial product-development experience with Claude Code, beyond autocomplete or simple prompting.
- Experience coordinating multiple AI agents or development sessions using agent context, skills, sub-agents, tools, planning, verification, and orchestration.
- Production experience with both a dynamic language ecosystem and a strongly typed ecosystem; production TypeScript/Node.js experience is required.
- Experience with relational databases such as PostgreSQL or MySQL and document/NoSQL databases; MongoDB experience is required.
- Hands-on experience deploying and operating production software in distributed cloud environments across AWS, GCP, or both, including service-oriented or microservice architectures.
- Hands-on production experience applying AI/ML, such as integrating LLMs or models into products or workflows, building retrieval or agentic systems, prompt/evaluation design, or on-device/edge inference.
- Extensive experience developing and maintaining APIs and integrating third-party APIs.
- Strong experience with automated CI/CD pipelines and software testing practices.
- Ability to translate business and product requirements into technical requirements and implementation plans.
- Strong product judgment, including understanding user intent, identifying edge cases, and evaluating whether implementations satisfy requirements.
- Strong understanding of software design, architecture, security, reliability, scalability, and maintainability.
- Ability to critically review AI-generated code and distinguish high-quality engineering from superficially functional output.
- Comfort working across unfamiliar languages, frameworks, and legacy systems with AI assistance.
- Strong ownership, initiative, building orientation, and written and verbal communication skills.
Benefits
- Comprehensive medical, dental, and vision plans starting day one, with ButterflyMX covering 80% of the cost.
- 401(k) plan with a match.
- 10 paid holidays, 20 vacation days, 5 sick days, and 3 floating holidays.
- Basic Life and Accidental Death and Dismemberment Insurance, fully covered by ButterflyMX.
- Short- and long-term disability coverage, fully covered by ButterflyMX.
- Paid family leave and an Employee Assistance Program.
- Quarterly self-care stipends.
- Optional FSA, HSA, Dependent Care FSA, Commuter Benefits, supplemental insurance, legal insurance, pet insurance, and personal liability insurance.
- Primarily remote position with U.S. work authorization required.
Tech Stack
About ButterflyMX
ButterflyMX builds a smartphone-based access control and property management platform for multifamily, commercial, and gated properties, combining cloud software with video intercoms, keypads, package rooms, and smart lock integrations. The company sells hardware plus subscriptions that let owners and managers control doors, gates, elevators, and garages from web or mobile. Founded in 2014 and headquartered in New York, ButterflyMX is privately held and serves real estate operators across North America.