Early-Stage Deep Tech • Equity-Based

Build the future of quantum computing

Join an early-stage team building QCOS—the infrastructure that will power the quantum era. European-based, remote-first, equity-focused.

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Open Positions

100%

Remote in Europe

210k

GPU Hours on LUMI

Equity

All Positions

Open Positions

We're looking for exceptional people to join our founding team. All positions are equity-based with clear vesting schedules.

FeaturedResearch

Scientific Advisor – Quantum Benchmarking & Reproducibility

SoftQuantus is developing QCOS, a Quantum Control Operating System focused on benchmarking, reproducibility, drift analysis, and hardware reliability. We are seeking a PhD-level Scientific Advisor to help shape the scientific foundation of our platform.

Remote • EuropeAdvisorEquity-Based

FeaturedEngineering

Quantum Software Engineer – Control & Orchestration

We are looking for a Quantum Software Engineer to build the core orchestration layer of QCOS. You will work on the fundamental infrastructure that connects quantum algorithms to hardware execution.

Remote • EuropeEquity-BasedEquity-Based

Engineering

Quantum Systems Engineer – Drift & Diagnostics

QCOS requires advanced system-level diagnostics to ensure quantum hardware reliability. You will develop the drift detection and noise analytics capabilities that make QCOS unique.

Remote • EuropeEquity-BasedEquity-Based

FeaturedAI

AI Research Engineer – Hybrid AI–Quantum Systems

SoftQuantus integrates AI-driven diagnostics with quantum systems. Join us to build the intelligent layer that optimizes quantum workloads and predicts hardware behavior.

Remote • EuropeEquity-BasedEquity-Based

Infrastructure

HPC & Infrastructure Engineer – Quantum-Scale Compute

We are building hybrid HPC–Quantum workflows. Join us to architect the infrastructure that will scale quantum computing to enterprise production workloads.

Remote • EuropeEquity-BasedEquity-Based

FeaturedResearch

Trapped Ion Quantum Hardware Lead

SoftQuantus is building a sovereign European stack for quantum computing. This role leads the physical and experimental layer of our trapped-ion roadmap—turning architecture into prototypes, measurements, and validation in real laboratory environments. You will design and execute the path to a functional trapped-ion system, starting from critical modules and measurable demonstrators, with a focus on high-reliability engineering, experimental repeatability, and scalability.

Remote • EuropeEquity-BasedEquity-Based

FeaturedInfrastructure

Hardware / Systems Architect

SoftQuantus is building the next generation of AI infrastructure. The constraint is no longer models — the constraint is compute efficiency. Most companies are overspending millions on GPU clusters without mastering memory bandwidth optimization, interconnect topology, or performance per watt. This is not a software problem. It is a systems problem. We are looking for a Hardware / Systems Architect to design infrastructure that delivers lower cost per token than hyperscalers.

Remote • EuropeEquity-BasedEquity-Based

FeaturedAI

AI / LLM Systems Engineer

Most AI systems today are inefficient. They rely on oversized models, high latency pipelines, and expensive inference without control over cost. At scale, this becomes unsustainable. SoftQuantus is building a different approach: optimized inference pipelines, controlled cost per token, and high-performance LLM runtime systems. The objective is not experimentation — it is to maximize tokens/sec, minimize latency, and reduce infrastructure cost.

Remote • EuropeEquity-BasedEquity-Based

FeaturedProduct

Product / Business Operator

AI does not create value by itself. Value is created when cost is reduced, revenue is increased, and systems are deployed at scale. Most AI companies fail because they focus on technology instead of distribution and monetization. SoftQuantus is building AI infrastructure with a clear objective: deliver lower cost per token and deploy it into real business environments. Without a strong product and business operator, there is no company.

Remote • EuropeEquity-BasedEquity-Based

FeaturedResearch

PhD Student – Computer Architecture

SoftQuantus is building AI and quantum compute infrastructure where the bottleneck is no longer algorithms — it is architecture. We are looking for a PhD Student in Computer Architecture who wants to apply their research to real systems: inference pipelines, memory hierarchies, custom accelerators, and compute efficiency at scale. This is not a traditional internship. It is a research partnership with direct impact on the product roadmap.

Remote • EuropeEquity-BasedEquity-Based

FeaturedEngineering

SoC Design Engineer

SoftQuantus is designing compute systems from the ground up. The next bottleneck in AI infrastructure is not software — it is silicon. We are exploring custom SoC architectures tailored for AI inference and quantum control workloads, where general-purpose GPUs fall short on efficiency and cost-per-operation. We are looking for a SoC Design Engineer who understands the full stack from RTL to physical implementation and can translate system-level requirements into silicon-level decisions.

Remote • EuropeEquity-BasedEquity-Based

Don't see a role that fits?

We're always looking for exceptional talent. Send us your application.

Spontaneous Application

Why join SoftQuantus?

We're building the infrastructure layer for the quantum computing industry. This is your chance to be part of something foundational.

Remote First

Work from anywhere in Europe. We believe in flexibility and trust.

Equity Participation

Own a piece of the company. All positions include meaningful equity stakes.

Deep Tech Mission

Work on cutting-edge quantum computing infrastructure that matters.

Learning & Growth

Conference budget, research time, and access to quantum hardware.

Flexible Schedule

We focus on results, not hours. Structure your day as it works for you.

European HPC Access

Access to LUMI and other European supercomputing resources.

Equity-Based Compensation

As an early-stage deep-tech company, we offer equity-based compensation to align incentives and share success with our team. All positions include:

1Meaningful Equity Stakes

Equity ranges from 0.25% to 2% fully diluted depending on role and seniority.

2Standard Vesting

24-month vesting with 3-month cliff. Aligned with milestones.

3Cash After Funding

Cash retainer or salary component added after funding milestones.

4European Structure

Company incorporated in Europe with EU-compliant equity plans.

Specific equity packages are discussed during the interview process based on experience and contribution scope.

Ready to build the quantum future?

Join us in creating the infrastructure that will power the quantum revolution. Apply now or reach out to learn more.

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