Senior Software Engineer

First ResonanceLos Angeles, California

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Overview

Schedule

Full-time

Career level

Senior-level

Remote

Hybrid remote

Benefits

Health Insurance

Dental Insurance

Vision Insurance

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.

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FAQs About Senior Software Engineer Jobs at First Resonance

What is the work location for this position at First Resonance?

This job at First Resonance is located in Los Angeles, California, according to the details provided by the employer. Some roles may also include multiple work locations depending on the requirement.

What pay range can candidates expect for this role at First Resonance?

Employer has not shared pay details for this role.

What employment applies to this position at First Resonance?

First Resonance lists this role as a Full-time position.

What experience level is required for this role at First Resonance?

First Resonance is looking for a candidate with "Senior-level" experience level.

What benefits are offered by First Resonance for this role?

First Resonance offers following benefits: Health Insurance, Dental Insurance, Vision Insurance, Life Insurance, Parental and Family Leave, Flexible/Unlimited PTO, and 401k Matching/Retirement Savings for this position. Actual benefits may vary depending on the employer's policies and employment terms.

What is the process to apply for this position at First Resonance?

You can apply for this role at First Resonance either through Sonara's automated application system, which helps you submit applications 10X faster with minimal effort, or by applying manually using the direct link on the job page.