Full-Time

Senior Site Reliability Engineer

Posted on 12/2/2025

 First Resonance

First Resonance

11-50 employees

Manufacturing software platform enabling hardware production

Compensation Overview

$160k - $180k/yr

Los Angeles, CA, USA

In Person

Category
DevOps & Infrastructure (2)
,
Requirements
  • Solid background in Computer Science, Engineering, or a related field.
Responsibilities
  • Lead efforts to integrate SRE practices across the development lifecycle, enhancing automation, deployment, and monitoring capabilities.
  • Work alongside development and IT teams to improve and maintain the operational aspects of the ION platform, including its performance, scalability, and reliability.
  • Take charge of developing, deploying, and managing critical infrastructure components using containerization and orchestration tools like Docker and Kubernetes.
  • Implement and maintain CI/CD pipelines, ensuring smooth and efficient deployment processes, comprehensive system monitoring and performance tracking.
  • Promote best practices in continuous integration, continuous deployment, and infrastructure as code among the development team and stakeholders.
  • Collaborate with the Engineering team to ensure that our products are designed with operability, reliability, and scalability in mind from the outset.
Desired Qualifications
  • Demonstrated experience with Docker, Kubernetes, and managing microservices architectures.
  • Extensive experience with cloud services. Ideally AWS
  • Proficiency in managing secrets with Hashicorp Vault or similar tools
  • Experience deploying solutions via Terraform, Helm, and/or ArgoCD
  • Experience managing CI/CD pipelines (e.g GitHub Actions, CircleCI, CodeFresh)
  • Experience with system observability tools (e.g. ELK Stack, Prometheus, Grafana, Datadog)
  • Excellent communication skills, with the ability to convey complex security topics in layman's terms.
  • Proficiency in scripting and programming languages relevant to security tasks.
  • Understanding of the AWS well-architected framework
  • Experience building AWS multi-account topologies
  • A proactive mindset with a knack for identifying potential security risks before they become problems
  • Comfortable in a fast-paced, dynamic environment with a commitment to excellence
  • Familiarity with security certifications (SOC2, CMMC, etc) and certification process

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

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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

Headcount

6 month growth

0%

1 year growth

6%

2 year growth

0%
Engineering.com
Sep 10th, 2025
Razorleaf and First Resonance partner on connected manufacturing

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.

Robotics & Automation News
Jun 25th, 2025
First Resonance launches 'agentic manufacturing solution'

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.

Techseriesinsight
Apr 22nd, 2025
Emerson is Recognized as the Leader in the 2024 SPARK Matrix(TM): Manufacturing Execution Systems (MES) - Process and Batch Manufacturing by QKS Group

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.

IIoT World
Mar 23rd, 2025
Critical Manufacturing to Showcase the Future of MES at Hannover Messe 2025

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.

intelligence360
Jan 9th, 2025
First Resonance Raises $32M for ION OS

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.

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