---
title: 'Software Engineer at Epsilon3'
canonical: 'https://feeny.ai/job/software-engineer-epsilon3-los-angeles-3v2qdey3bbf6'
type: 'job'
last_seen: '2026-09-09'
---

# Software Engineer at Epsilon3

- **Company:** Epsilon3
- **Location:** Los Angeles, CA
- **Compensation:** $120k–$180k
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2021-11-20
- **Last confirmed live:** 2026-09-09
- **Apply:** https://jobs.lever.co/epsilon3/a03bb64e-920f-4235-b33e-c6f7faa912ea

## Job description

Epsilon3 is a multi-product operations management platform revolutionizing the way teams build, launch, and operate spacecraft and other advanced hardware systems.

Launched in 2021, our company is led by engineers from SpaceX, Google, and NASA, who have experience supporting over 100 space missions. Innovative teams at Blue Origin, Rocket Lab, Axiom Space, Firefly Aerospace, and many others depend on our web-based (SaaS) solutions to plan and track high-stakes procedures. We raised a $15M Series A funding round led by Lux Capital, Y Combinator (YC S21), and other world-class investors.

We're looking for Software Engineers who are interested in space exploration and passionate about building scalable, reliable software. You will be responsible for creating delightful user experiences that solve very complex problems. We are currently using technologies such as Node.js, React, Llama, Postgres, AWS GovCloud, Docker, and Kubernetes, and we expect our stack to evolve over time as we scale our solutions and approach.

This is an impactful role within a fast-paced startup. The ideal candidate is someone who has experience designing and implementing software systems from requirements to production and deployment.

The Technical Challenges We’re Undertaking

- Real-time synchronization of data and user interfaces across Earth and space
- Visualization of many complex data fields
- Integration of multiple high-bandwidth data streams for real-time processing and display
- Multiple deployment environments, including cloud and on-premises
- Mission-critical security and reliability requirements
- Supporting complex workflows and detailed tracking while also maintaining intuitive and delightful user experiences
- Impactful AI/ML features that boost team efficiency and enable fast, data-driven decisions

## Responsibilities

- Design, build, test, and release our web-based operational dashboards, electronic procedure tools, and a suite of specialized software solutions to support various space missions
- Create software to support simple and complex computation on datasets for decision-making and autonomous execution
- Build and deploy high-quality code on a daily basis for rapid iteration and testing with users
- Design APIs and integration solutions for various proprietary and open-source telemetry and command and control systems
- Rapidly prototype demos and proof-of-concepts for customer meetings
- Join and actively participate in customer discovery calls and technical demonstrations
- Analyze and enhance the efficiency, stability, and scalability of software systems
- Support software QA and user testing
- Assess third-party and open-source software and develop integrations
- Contribute to the growth and refinement of our engineering culture, processes, and tools

## Qualifications

- 3+ years of experience as a Software Engineer
- Proficiency with TypeScript and with JavaScript frameworks like React, Vue, Angular, or Svelte
- Strong foundation in computer science concepts (algorithms, data structures, object-oriented programming, design, testing, etc.)
- Self-starter and able to navigate ambiguity and assess rapidly evolving priorities
- Strong team player with great communication skills and collaborative work ethic
- Love of learning (technical and otherwise)
- Experience at fast-growing tech startups is a plus
- Experience with Lean Startup & Agile software development methodologies is a plus
- Bachelor’s Degree in Computer Science or related field
- US Citizenship required (future security clearance may be required)
- Must be located in the United States

Perks:

This full-time role includes stock options, generous PTO, health insurance, and a 4% 401k match.

Epsilon3 is an equal opportunity employer committed to diversity and inclusion in the workplace. We prohibit discrimination and harassment of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic as outlined by federal, state, or local laws. This policy applies to all employment practices within our organization, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, compensation, benefits, training, and apprenticeship. Epsilon3 makes hiring decisions based solely on qualifications, merit, and business needs at the time.

Epsilon3 Newsletter | LinkedIn | YouTube | Instagram | X

## About Epsilon3

## Company Overview
- **One-liner**: Epsilon3 provides an AI-powered procedure and resource management platform that helps teams in highly regulated industries plan, execute, and analyze complex operations.
- **Entity Type**: Private (Series A)
- **Headquarters**: Los Angeles, California, United States
- **Founded**: 2021
- **Founders**: Laura Crabtree, Max Mednik, Aaron Sullivan

## Core Business
- Primary industry: Software Development for industrial operations – aerospace, defense, energy, aviation, maritime, robotics, and biotech.
- Target customers: B2B, Enterprise, Government (NASA, Blue Origin, Sierra Space, Redwire, AeroVironment, Commonwealth Fusion Systems).
- Mission or purpose: To make building and operating advanced systems as efficient, error-free, and enjoyable as possible by replacing outdated tools (Excel, Word, SharePoint) with a purpose-built, real-time procedure execution system.

## Products & Services
- **[Epsilon3 Platform](https://www.epsilon3.io/)**: An AI-powered SaaS platform that covers the entire program lifecycle – planning, manufacturing execution, procedure workflows, testing, data analysis, reporting, risk, document management, and integrations. Includes modules for resource management, BOM/inventory tracking, real-time collaboration, and conditional logic workflows. Supports REST API, pre-built integrations, and on-premise/cloud deployment.

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Total Funding $18.8M (Series A led by Lux Capital, seed rounds from Y Combinator, Stage Venture Partners); Annual Revenue ~$1M (as of latest available data)
- **Notable Investors/Partners**: Lux Capital, Y Combinator, Stage Venture Partners. Customers: NASA, Blue Origin, Redwire, Axiom, AeroVironment, Sierra Space, Shift4, Commonwealth Fusion Systems.
- **Growth Signals**: Headcount grew 17.2% YoY (33 employees, +5), with 3 active job postings. Expanding into new verticals (defense, energy, maritime). Used by teams that have supported over 100 space launches.

## Competitive Advantages
- Purpose-built for high-stakes, regulated industries – not a repurposed ERP or MES. Replaces checklists, Word, Excel, and legacy systems with a unified, real-time procedure execution platform.
- Deep domain expertise: Founders and team from SpaceX, NASA, Google, and Stanford; directly understand the pain points of complex operations.
- Adoption by tier-1 customers (NASA, Blue Origin) provides strong social proof and a high barrier to entry.
- Integrates with existing PLM, telemetry, and ticketing systems, and offers on-premise deployment for security-sensitive organizations.

## Strategic Focus
- Continue to scale the platform to serve defense, energy, biotech, and maritime sectors beyond aerospace.
- Deepen AI capabilities for predictive analytics, automated data collection, and intelligent recommendations.
- Expand federal sales (VP of Federal Sales hired) and grow government contracts.
- Maintain a fully remote, US-based team while scaling headcount in engineering, customer success, and product.

## Why Work Here
- Fully remote, US-based SaaS startup (with optional hubs in Los Angeles/El Segundo).
- History of supporting over 100 space missions and working with top-tier aerospace and defense organizations.
- Team culture: “engineers from SpaceX, NASA, Google, and Stanford” – emphasis on solving hard problems in a collaborative, high-trust environment.
- Open roles currently include Senior Customer Success Account Manager, Software Engineer, and Senior Product Designer (salary range $120K–$180K for engineering roles).
- Strong funding and revenue growth provide stability, while the small team size (33 people) offers impact and ownership.

## Sources
1. [epsilon3.io](https://www.epsilon3.io/)
2. [epsilon3.io/mission](https://www.epsilon3.io/mission)
3. [LinkedIn](https://www.linkedin.com/company/epsilon3inc)
4. [Y Combinator](https://www.ycombinator.com/companies/epsilon3-inc)
5. [Tracxn](https://tracxn.com/d/companies/epsilon3/__PP7VEA50fY4O3zjoGmVd02K2HGI-w1JlVJoCSvs_nto)

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