---
title: 'Software Engineer at Harmonic'
canonical: 'https://feeny.ai/job/software-engineer-harmonic-palo-alto-qvysrbna92cr'
type: 'job'
last_seen: '2026-09-10'
---

# Software Engineer at Harmonic

- **Company:** Harmonic
- **Location:** Palo Alto, CA
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2024-08-28
- **Last confirmed live:** 2026-09-10
- **Apply:** https://jobs.ashbyhq.com/harmonic/288d8cce-929a-4ed6-920e-4e80ecaf457a

## Job description

## About Harmonic

At Harmonic, we are building a mathematical reasoning engine that operates with absolute precision. While most AI makes maximum-likelihood guesses, Harmonic's Aristotle uses Lean4 and reinforcement learning to verify its reasoning and results.

Following our Gold Medal-level performance on the 2025 International Math Olympiad (IMO) and the successful resolution of long-standing open problems, we are proving that AI can master the most rigorous domains of human thought. Backed by some of the world’s most prominent investors, we are intentionally scaling an elite technical team.

Visit our [company blog](https://harmonic.fun/news) to learn more about what we are working on!

## About the Role

We are seeking a talented Software Engineer to build systems from scratch, bridging the gap between our research and product development. In this role, you will develop robust, scalable software systems behind our product based on the discoveries and advancements in AI from our researchers. We are looking for a problem-solver that has experience working on complex, distributed systems and are passionate about advancements in AI and software development.

## Key Responsibilities

- Collaborate with AI research scientists to translate state-of-the-art research into practical, scalable software
- Participate in the entire software development lifecycle including: requirement analysis, design, coding, testing, reviewing, deployment, and support
- Ensure the scalability, efficiency, and reliability of software systems through the entire development lifecycle
- Write clean, efficient, and well-documented code
- Work cross-functionally with product managers, designers, and other engineering teams to deliver high-quality product

## Minimum Qualifications

- BS in Computer Science, Engineering, or a related field
- 2+ years of relevant industry experience
- Proficiency in one or more programming languages (e.g., Python, C++, etc)
- Experience building, scaling, and maintaining large-scale distributed systems
- Experience with modern software development practices including coding standards, code reviews, source control management, build and deployment processes, and testing.
- Proven track record operating successfully in a fast-paced, collaborative environment

## Preferred Qualifications

- MS or PhD degree in Computer Science, Engineering, or a related field.
- Prior experience in developing products from concept to launch
- Experience with building core cloud technologies including: infrastructure, security, platforms and services (e.g., AWS, Azure, GCP, Kubernetes, etc)

## What We Offer

- Unlimited PTO
- 401(k) matching
- 100% employer-paid health, vision, and dental benefits for employees and 50% coverage for dependents. Harmonic offers varied health coverage options to select what is best for you and your family.
- Health Savings Account (HSA) available for qualifying health plans

## Equal Opportunity Statement

Harmonic is committed to diversity and inclusivity in the workplace. We are an equal opportunity employer and do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, veteran status, disability or any other legally protected status.

## About Harmonic

## Company Overview
- **One-liner**: Harmonic is an AI research lab building the world’s most advanced mathematical reasoning engine to achieve verifiable, safe, and superhuman mathematical intelligence.
- **Entity Type**: Private (Series C, $1.45B valuation)
- **Headquarters**: Palo Alto, California, United States
- **Founded**: 2023
- **Founders**: Tudor Achim (CEO) and Vlad Tenev (Executive Chairman)

## Core Business
- **Primary industry**: Artificial intelligence / AI research, with a focus on formal mathematical reasoning and automated theorem proving.
- **Target customers**: B2B, enterprise – safety-critical industries such as aerospace, chip design, industrial systems, and healthcare where software reliability is paramount.
- **Mission**: “To explore the frontiers of human understanding” and build mathematical superintelligence (MSI) – AI with mathematical capabilities superior to humans.

## Products & Services
- **Aristotle**: An automated theorem prover that achieved gold‑medal level performance on the 2025 International Mathematical Olympiad. It advances the state‑of‑the‑art on the MiniF2F benchmark (83% success rate with external computer algebra systems, 63% when restricted to Lean). [harmonic.fun/news/intro-harmonic](https://harmonic.fun/news/intro-harmonic/)
- **Yuclid**: An open‑sourced theorem prover that provides visibility into proof traces (announced alongside Aristotle’s IMO results). [harmonic.fun/news/intro-harmonic](https://harmonic.fun/news/intro-harmonic/)

## Market Standing
- **Valuation/Market Cap**: $1.45 billion (Series C, November 2025) [linkedin.com/company/harmonicmath](https://www.linkedin.com/company/harmonicmath)
- **Key Metric**: Total funding of $295M (Series A $75M, Series B $100M, Series C $120M). Revenue is not publicly available.
- **Notable Investors/Partners**: Sequoia Capital (lead Series A), Kleiner Perkins (lead Series B), Ribbit Capital (lead Series C), Index Ventures. [harmonic.fun/news/intro-harmonic](https://harmonic.fun/news/intro-harmonic/)
- **Growth Signals**: 41.9% year‑over‑year headcount growth (37 employees); three funding rounds in 14 months; first research model (Aristotle) achieving state‑of‑the‑art results. [linkedin.com/company/harmonicmath](https://www.linkedin.com/company/harmonicmath)

## Competitive Advantages
- **Formal mathematical reasoning**: Models produce outputs that are guaranteed correct through verifiable, interpretable proof traces – fundamentally safer than current LLM‑based systems.
- **Full‑stack RL ownership**: The team owns the entire reinforcement learning stack – from low‑level environment simulators and custom communication primitives to distributed training loops and inference engines. [harmonic.fun/careers](https://harmonic.fun/careers/)
- **Founding team depth**: Co‑founders with deep AI and scale‑up experience (Tudor Achim co‑founded Helm.ai; Vlad Tenev co‑founded Robinhood), attracting top talent from Anthropic, Meta, and top research universities. [linkedin.com/company/harmonicmath](https://www.linkedin.com/company/harmonicmath)
- **Open ecosystem**: Open‑sourcing tools like Yuclid to build community and accelerate adoption of formal methods.

## Strategic Focus
- **Scale Mathematical Superintelligence (MSI)**: Continue advancing Aristotle’s capabilities and integrate MSI into real‑world safety‑critical applications.
- **Expand research and engineering team**: 8 active job postings across research, infrastructure, product, and machine learning systems. [harmonic.fun/careers](https://harmonic.fun/careers/)
- **Bridge research and production**: Build robust, scalable infrastructure to turn research ideas into deployable systems. [harmonic.fun/careers](https://harmonic.fun/careers/)

## Why Work Here
- **Mission‑driven work**: Contribute to AI safety and fundamental science – building AI that can be trusted because its reasoning is provably correct.
- **Cutting‑edge technical challenges**: Work on low‑level RL systems, formal theorem proving, and distributed training at scale. The team operates like a commercial research lab with high ownership. [harmonic.fun/careers](https://harmonic.fun/careers/)
- **Strong talent density**: Team includes researchers and engineers from Meta, Anthropic, Perimeter Institute, UC Berkeley, Stanford – a fast‑growing, high‑caliber group. [linkedin.com/company/harmonicmath](https://www.linkedin.com/company/harmonicmath)
- **Location & flexibility**: Based in Palo Alto, CA (headquarters) with a second office in the UK. Job postings list “Palo Alto” as location – likely primarily in‑office. [harmonic.fun/careers](https://harmonic.fun/careers/)
- **Growth trajectory**: Rapidly scaling startup ($295M raised, 41.9% headcount growth) offering early‑employee impact and career growth.

## Sources
1. [harmonic.fun/about](https://www.harmonic.fun/about/)
2. [harmonic.fun/careers](https://harmonic.fun/careers/)
3. [linkedin.com/company/harmonicmath](https://www.linkedin.com/company/harmonicmath)
4. [harmonic.fun/news/intro-harmonic](https://harmonic.fun/news/intro-harmonic/)

## Other roles at Harmonic

- [Research Engineer, Formal Methods](https://feeny.ai/job/research-engineer-formal-methods-harmonic-palo-alto-kwng36gryxtz) — Palo Alto, CA
- [Formal Verification Engineer](https://feeny.ai/job/formal-verification-engineer-harmonic-palo-alto-nwvhgknaq1k5) — Palo Alto, CA
- [Software Engineer, Product](https://feeny.ai/job/software-engineer-product-harmonic-palo-alto-1yff5aezv40e) — Palo Alto, CA
- [Software Engineer, ML Systems](https://feeny.ai/job/software-engineer-ml-systems-harmonic-palo-alto-0y91cwhwtxhx) — Palo Alto, CA
- [Research Engineer, Training & Inference](https://feeny.ai/job/research-engineer-training-inference-harmonic-palo-alto-zwfvjpjbhw0b) — Palo Alto, CA
- [Software Engineer, Infrastructure](https://feeny.ai/job/software-engineer-infrastructure-harmonic-london-cbrqy6dv7t0p) — London, United Kingdom
- [General Opportunity](https://feeny.ai/job/general-opportunity-harmonic-palo-alto-m52jhh18j8ps) — Palo Alto, CA
- [Research Engineer, Technical Lead](https://feeny.ai/job/research-engineer-technical-lead-harmonic-palo-alto-31amhf03p5wm) — Palo Alto, CA
- [Research Engineer](https://feeny.ai/job/research-engineer-harmonic-palo-alto-ze9en6jgv6fs) — Palo Alto, CA
- [Software Engineer](https://feeny.ai/job/software-engineer-mintmcp-san-francisco-gnsz7a877qxh) — San Francisco, CA