We're looking for a full-time Senior Software Engineer to join us in our mission of bringing the ION Factory OS to next-generation hardware builders around the globe. We are looking for engineers who leverage AI coding tools to build end-to-end features with unprecedented speed and quality.
Our newest recruit will join the First Resonance team full-time in Los Angeles, CA (HQ in El Segundo) as a foundational member of our product team.
Why This Role?Are you excited by the opportunity to assist manufacturers working on eVTOLS, rockets, robots, and autonomous vehicles? We support companies tackling society’s greatest challenges: climate change, space exploration, and autonomous transportation.
We pride ourselves on being fast learners and agile executors. If you want to play a key role in the future of hardware and Industry 4.0 by wielding the latest in AI-assisted development, come join us!
Responsibilities & DutiesEnd-to-End Feature Ownership: Use AI-augmented workflows (Claude) to build and deploy full-stack features using Python (Backend) and Next.js/TypeScript (Frontend).
API & Data Architecture: Develop high-performance GraphQL mutations and queries; design relational database models in Postgres that reflect complex industrial processes.
Cloud Infrastructure: Build and maintain scalable services on AWS, leveraging modern infrastructure patterns.
AI-Driven Productivity: Lead the team in adopting AI tools to automate boilerplate, refactor legacy logic, and accelerate the "idea-to-production" cycle.
Technical Leadership: Write design specifications and diagrams (UML/System Flow) that guide both human teammates and AI agents.
Reliability: Drive code-level architecture, modularity, and comprehensive testing (Pytest, Jest) to ensure ion remains mission-critical for our customers.
6+ years of technical experience: You’ve built and scaled production-grade software.
AI-Native Workflow: You are "pro-AI" and actively use coding assistants to increase your output and code quality.
Backend Mastery: Expert-level Python skills with a deep understanding of ORMs (e.g., SQLAlchemy) and asynchronous processing.
Modern Frontend: Proficiency in TypeScript, React, and Next.js.
Cloud & Infra: Hands-on experience with AWS ecosystem and deploying multi-tenant SaaS environments.
API Design: Strong experience with GraphQL and architectural patterns like Domain Driven Design (DDD) or Event-Driven systems.
Problem Solver: You enjoy collaborating across departments and "flexing your creative muscle" to solve hardware-world problems with software.
Experience with Infrastructure as Code (Terraform, CDK).
Experience building manufacturing tools or working in high-stakes industrial environments.
Experience writing complex ETL processes for industrial data.
Health & Wellness: Comprehensive medical, vision, dental, and life insurance.
Ownership: Employee Stock Option Plan and 401K.
Flexibility: Unlimited PTO and hybrid work schedule.
Culture: Paid parental leave, team outings, group lunches, and an open office in El Segundo.
Skills Required
- 6+ years of technical experience
- AI-native workflow; active use of coding assistants (e.g., Claude)
- Expert-level Python with ORMs (e.g., SQLAlchemy) and asynchronous processing
- Frontend proficiency with TypeScript, React, and Next.js
- Strong experience with GraphQL (queries and mutations)
- Design relational database schemas in Postgres
- Hands-on experience with AWS and deploying multi-tenant SaaS environments
- Testing and reliability: Pytest and Jest
- API and architectural design familiarity (DDD or Event-Driven systems)
- Write design specifications and system diagrams (UML/System Flow)
- Experience with Infrastructure as Code (Terraform, CDK)
- Experience building manufacturing or high-stakes industrial tools
- Experience writing complex ETL processes for industrial data
First Resonance Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about First Resonance and has not been reviewed or approved by First Resonance.
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Fair & Transparent Compensation — Pay is considered competitive in technical and leadership roles, and sentiment indicates many are satisfied with total compensation. Available salary information portrays these ranges as strong relative to similar positions.
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Parental & Family Support — Paid parental leave is described as generous, with extended paid time available to new parents. This support is presented as a standout component of the overall package.
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Wellbeing & Lifestyle Benefits — Wellness initiatives such as mental health support, bi‑weekly massages, onsite amenities, and regular meals are emphasized. These perks complement core benefits and contribute to work-life balance.
First Resonance Insights
What We Do
We are developing the next-generation manufacturing software platform for modern manufacturers. ION is a factory operating system that accelerates manufacturing and tracks parts and processes from prototype to full-scale production.
Why Work With Us
Unlike many tech companies, we are going after challenges in both the digital and physical worlds. Making software, processing data, and having sleek UIs is cool; but seeing your software start a motor for an electric aircraft is something else.
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