---
title: 'Software Stack / Framework Engineer at Equal1'
canonical: 'https://feeny.ai/job/software-stack-framework-engineer-equal1-timisoara-qk5b0hh4385x'
type: 'job'
last_seen: '2026-09-05'
---

# Software Stack / Framework Engineer at Equal1

- **Company:** Equal1
- **Location:** Timișoara, Romania
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-03-04
- **Last confirmed live:** 2026-09-05
- **Apply:** https://jobs.ashbyhq.com/equal1/05339781-aa69-4746-9ace-b48d3e2b9864

## Job description

Equal1 is building the world’s first practical, fully integrated quantum computer. In Timișoara, we are expanding our engineering team with talented young engineers who want to shape the software foundations of quantum computing.

We are looking for a Software Stack / Framework Engineer who is passionate about bridging classical computing with next-generation quantum architectures in hybrid architectures. You will help design, implement, and optimize the software layers that make the Equal1 QPU accessible, fast, and scalable, from low-level gate libraries to high-level developer frameworks.

## MAIN DUTIES AND RESPONSIBILITIES

- Develop and maintain the software stack that interfaces with Equal1’s silicon-based QPU.
- Build tools, APIs, and frameworks that enable researchers and customers to run quantum programs efficiently.
- Collaborate with hardware, algorithms, and control teams to design hybrid classical–quantum workflows.
- Optimize middleware, compilers, and library components for performance and reliability.
- Contribute to continuous integration, testing, and system-level validation.

## EXPERIENCE AND QUALIFICATIONS

- Strong programming skills (Python, C/C++, or similar).
- Solid understanding of computer architecture, embedded systems, compilers, or distributed systems.
- Knowledge of LLVM / MLIR compiler infrastructure or compilation strategies is a plus
- Familiarity with quantum computing concepts (gate models, qubits, noise) is a plus—deep expertise is not required.
- Curiosity, creativity, and the ability to work across classical and quantum paradigms.
- Desire to grow long-term in an emerging, cutting-edge field.
- Join us if you want to help build the software foundation of a new computing era.

## About Equal1

## Company Overview
- **One-liner**: Equal1 builds the world's first rack-mounted silicon quantum computers designed to deploy alongside classical CPUs and GPUs in standard data center infrastructure.
- **Entity Type**: Private (Series A, last raised $60M in January 2026)
- **Headquarters**: Dublin 4, Ireland (with offices in Fremont, CA; Delft, Netherlands; Sherbrooke, Canada; Timișoara, Romania)
- **Founded**: 2017
- **Founders**: Dirk Leipold (President & Co-Founder), R. Bogdan Staszewski (Co-Founder)

## Core Business
- **Primary Industry**: Quantum Computing / Nanotechnology / High-Performance Computing
- **Target Customers**: Enterprise and government data centers, HPC clusters, AI labs, defense and aerospace organizations (current customer includes the European Space Agency)
- **Mission Statement**: "Quantum will not deliver from the lab. It delivers when it becomes deployable: infrastructure that can be bought, run, scaled and trusted inside high-performance compute environments."

## Products & Services
- **Equal1 RacQ**: A rack-mounted silicon quantum computer that fits into a standard server rack with standard power and cooling. It runs alongside existing CPU/GPU infrastructure and supports hybrid quantum-classical workloads. Currently shipping to customers.
- **UnityQ**: The silicon quantum processor (QSoC - Quantum System-on-Chip) built in standard CMOS foundries. Each generation adds more qubits, higher fidelity, and exponential compute within the same rack footprint.
- **Quantum Solutions**: Capabilities for optimization (logistics, portfolio, scheduling), simulation (molecular systems, materials science), Monte Carlo (risk, pricing, modeling), and Quantum AI (training paths beyond classical scaling).

## Market Standing
- **Total Funding**: $106.5M across 12 rounds (last round: $60M in January 2026 led by Ireland Strategic Investment Fund)
- **Valuation**: Not publicly disclosed
- **Notable Investors**: Ireland Strategic Investment Fund, Matterwave Ventures, Atlantic Bridge, Enterprise Ireland, Elkstone Partners, EIC Fund
- **Key Partnership**: Signed a deal with **Nvidia** (September 2024) for hybrid supercomputer and quantum systems
- **Growth Signals**: 
  - RacQ already shipping to customers including the **European Space Agency**
  - Headcount growing 15.6% YoY (38 employees as of mid-2026)
  - Opened Dutch lab in 2024, partnered with TNO (Netherlands Organisation for Applied Scientific Research)
  - 34 patents filed in quantum information science
  - Multiple generations of silicon already proven

## Competitive Advantages
- **Silicon CMOS Advantage**: Unlike other qubit modalities (superconducting, ion trap, photonic) that require exotic manufacturing, Equal1 builds in standard silicon foundries — making their chips manufacturable, deployable, and upgradeable at scale.
- **Rack-Mounted Form Factor**: The only quantum computer that fits in a standard data center rack with standard power and cooling — no cryogenic infrastructure or dedicated quantum facility required.
- **Deployed Today, Not "Soon"**: RacQ is already shipping to paying customers, including a major space agency.
- **Nvidia Partnership**: Direct integration with the dominant AI/HPC ecosystem.

## Strategic Focus
- Scaling qubit count and fidelity with each UnityQ processor generation
- Deepening hybrid quantum-classical compute integration with Nvidia
- Expanding commercial deployments into optimization, simulation, and AI workloads
- Building out the software stack and framework engineering team
- Growing headcount in engineering, quantum error correction, device physics, and software roles

## Why Work Here
- **Work Environment**: "Hybrid by default" — employees work across offices in Ireland, Netherlands, US, Canada, and Romania
- **Culture**: Rated 5.0/5.0 on employer review sites (Work-Life: 5.0, Compensation: 5.0, Culture: 5.0, Career: 5.0)
- **Team**: Small (~38 people), highly technical (26% technical, 15% research), with talent from Intel (5 alumni), University College Dublin (7), TNO, Qualcomm, and Movidius
- **Impact**: You'd be building deployable quantum infrastructure that's already shipping — not just doing research
- **Career Growth**: Open roles include VP of Quantum Software Engineering, Quantum Error Correction Lead, Senior Verification Engineer, Spin Qubit Calibration Engineer — indicating serious scaling of the engineering team
- **Notable**: Employees have gone on to Stanford, PsiQuantum, Qualcomm — showing the team is deeply embedded in the quantum ecosystem

## Sources
1. [equal1.com](https://www.equal1.com/)
2. [equal1.com/company](https://www.equal1.com/company)
3. [LinkedIn - Equal1](https://www.linkedin.com/company/equal1)
4. [CB Insights - Equal1](https://www.cbinsights.com/company/equal1labs)
5. [Jobs.ashbyhq.com/equal1](https://jobs.ashbyhq.com/equal1)

## Other roles at Equal1

- [Cryogenic Systems Engineer](https://feeny.ai/job/cryogenic-systems-engineer-equal1-california-h19kerxqkygn) — California
- [Junior Mechanical CAD Engineer / Designer](https://feeny.ai/job/junior-mechanical-cad-engineer-designer-equal1-california-a9xm7xbwt0ze) — California
- [Technical Program Manager – Cryomechanical & Quantum System Integration](https://feeny.ai/job/technical-program-manager-cryomechanical-quantum-system-integration-equal1-dsr0gnz4nv19) — California
- [Quantum Device Engineer (Silicon Spin-Qubits)](https://feeny.ai/job/quantum-device-engineer-silicon-spin-qubits-equal1-delft-hcak91tq1nca) — Delft, Netherlands
- [Head of People](https://feeny.ai/job/head-of-people-equal1-dublin-8gn89h2vb4gq) — Dublin, Ireland
- [Quantum Error Correction Lead / Senior Quantum Error Correction Scientist](https://feeny.ai/job/quantum-error-correction-lead-senior-quantum-error-correction-scientist-equal1-qvbyxmxdsptz) — Dublin, Ireland
- [Speculative Applications (Quantum Computing)](https://feeny.ai/job/speculative-applications-quantum-computing-equal1-dublin-an13pxaaaghm) — Dublin, Ireland
- [Quantum Information Researcher](https://feeny.ai/job/quantum-information-researcher-equal1-dublin-rd0aa0nnnwmw) — Dublin, Ireland
- [Spin Qubit Calibration Engineer](https://feeny.ai/job/spin-qubit-calibration-engineer-equal1-delft-d0attrhvmsm6) — Delft, Netherlands