Full-Time
Senior Software Engineer
First Resonance
11-50 employees
Manufacturing software platform enabling hardware production
Compensation Overview
$160k - $190k/yr
Los Angeles, CA, USA
In Person
Hybrid work schedule; some in-office days at El Segundo HQ.
 Software Engineering (1) |
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- 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.
- 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.
- 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.
First Resonance provides a manufacturing software platform called ION that helps hardware companies manage production more efficiently. ION combines purchasing, inventory, supply-chain management, and analytics into a single system with a user-friendly interface for engineers and technicians to track production steps, share feedback, and attach files in real time. The platform gives real-time visibility and cross-team collaboration to support high-quality, compliant manufacturing for startups and large enterprises. Revenue comes from subscription access to ION, with optional premium services like advanced analytics, custom integrations, and dedicated support.
Company Size
11-50
Company Stage
Series A
Total Funding
$17.5M
Headquarters
Los Angeles, California
Founded
2018
Simplify's Take
What believers are saying
- Deployed across 60+ companies like Radiant, Saronic, K2 Space.
- Raised $32M led by Third Prime to enhance ION and support.
- Razorleaf partnership certifies consultants for spacecraft, nuclear sectors.
What critics are saying
- Epicor Kinetic captures aviation enterprises via superior ERP integration.
- Tulip diverts startups with no-code deployment under 2 weeks.
- Siemens Opcenter blocks nuclear contracts lacking ION's AS9100, ITAR.
What makes First Resonance unique
- ION Factory OS unifies R&D to production with as-built BOMs for traceability.
- ION Intelligence delivers agentic AI workflows accelerating manufacturing 10x.
- ION Marketplace connects partners for modular factory solutions.
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Benefits
Health Insurance
Paid Parental Leave
Employee Stock Option Plan
Paid Holidays
Paid Sick Leave
Unlimited Paid Time Off
401(k) Retirement Plan
Growth & Insights and Company News
6 month growth
↑ 0%1 year growth
↑ 6%2 year growth
↑ 2%As a strategic partner with First Resonance, Razorleaf consultants will be certified on their ION Factory Operating System, which supports a seamless flow of sensitive production data throughout factories producing complex hardware in key industries such as spacecraft, nuclear reactors and robots.
First Resonance, a provider of digital manufacturing solutions, has launched its new "agentic manufacturing solution" - ION Intelligence, an updated ION Factory Operating System, and the ION Marketplace.
A modern MES also integrates with Enterprise Resource Planning (ERP) systems and production process control systems for offering real-time visibility into the shop floor.
As a Silver Sponsor of the 17th International MES Conference, Critical Manufacturing is doubling down on its commitment to pushing the boundaries of smart manufacturing.
First Resonance secured a new funding round led by Third Prime, raising total funding to $32M. The investment will enhance the ION Factory OS platform, expand customer support, and launch the ION Marketplace for developers and partners. The platform is widely adopted in industries like aviation and energy. First Resonance aims to integrate AI-driven workflows and expand its network of integration partners to advance digital manufacturing.