Senior Software Engineer

Job description

## Senior Software Engineer 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 & Duties - **End-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. ### Qualifications & Skills - **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. ### Desired Qualifications - 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. ### Benefits & Perks - **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.