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Senior Software Engineer - Application Engineer

passivelogic.com Logo

PassiveLogic

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Location:
United States, Salt Lake City

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

Not provided

Job Description:

This is a career-defining opportunity to play a crucial role in a hyper-scale AI company that is transforming the future of autonomous systems, energy, and the built environment. As our Senior Application Engineer, you’ll play a pivotal role in building an ecosystem of local-first web applications that enable PassiveLogic’s autonomous systems platform. Our software applications enable users to collaboratively create physics-based models of the components from which autonomous systems are comprised, simulate the buildings in which autonomous systems will run, and generatively design autonomous systems with a human-centered interface to interact with their systems — no more black box AI. At its core, our ecosystem is powered by Quantum, a schema for describing autonomous system Digital Twins, and DataSync, a real-time protocol for graph-based client/server data synchronization. We use empathetic Human-Computer-Interface (HCI) principles in our design, and TypeScript, WebGL, SVG, and reactive dataflow in our code. As part of our long-term vision, we are developing constraint-based layout engines, AI-enabled generative design capabilities, and exploring the use of Swift compiled to WebAssembly to improve the usability of our code across many platforms.

Job Responsibility:

  • Design and Implement Front End Architecture: Lead the design and implementation of front end architecture to support native-quality web applications for multi-platform deployment.
  • Contribute Across Teams: Collaborate cross-functionally to build our technology and celebrate our shared successes. Be impact-driven, seek to be a good employee, neighbor, and global citizen.
  • Optimize Systems-level Performance: Be a systems-level thinker who researches before they act and values sound processes and broad thinking.
  • Prioritize Execution, Stability, and Velocity: Focus on delivering short-term wins while maintaining a long-term vision within our shared architecture. Take pride in the impact of our products and in delivering a 'wow' customer experience.
  • Nerd Out About Your Craft: Dive deep into the details and continuously refine your expertise.

Requirements:

  • 5+ years in software engineering, computer science, front-end web-application development, or a related field
  • Strong JavaScript, TypeScript, or Swift experience
  • Strong algorithms, data structures, and coding background
  • Experience with user interface frameworks (e.g. Angular, React, Vue, Swift UI etc.)
  • Extraordinary teammate with excellent interpersonal skills
  • Exceptional communication skills: Ability to collaborate across teams, clearly communicate technical concepts to non-technical stakeholders, and document solutions effectively.
  • Organized and strategic: Experience in managing complex engineering projects, including timelines, scope, and deliverables, with attention to detail.
  • Collaborative mindset: Use your skillset to work flexibly across multiple teams and application.
  • Adaptability: Comfortable in a fast-paced startup environment, eager to learn, iterate, and innovate.
  • Problem solving: You own this role. When issues arise, be the empowered force that solves them, driving solutions to completion.

Nice to have:

  • Experience with: Developing and using design systems
  • Experience with the architectural patterns found in large-scale web applications, including well-designed APIs, high-volume data pipelines, and efficient algorithms.
  • SVG programming familiarity: Experience with technologies like SVG.js and Snap.js.
  • 3D programming or computer graphics familiarity: Background in using frameworks such as WebGL, WebGPU, and Three.js.
  • Real-time data analysis tools implementation: Experience implementing tools for analyzing and exploring large real-time data sets.
  • Experience utilizing multiple programming paradigms: Proficiency in various programming paradigms such as object-oriented, functional, data-driven, protocol-oriented, and/or reactive programming.
  • Exposure to: Distributed data tools, frameworks, and methodologies such as OT, CRDT, RealmDB, and AWS AppSync.
  • WebAssembly
What we offer:
  • Competitive compensation
  • Generous equity share package
  • Medical, dental and vision coverage
  • Disability and life Insurance options
  • Flex PTO
  • Team-building events
  • Free catered lunch in the office Monday — Friday
  • Free ski pass (We are at the base of Big Cottonwood Canyon)
  • Free National Park pass

Additional Information:

Job Posted:
December 11, 2025

Employment Type:
Fulltime
Work Type:
On-site work
Job Link Share:
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