Software Engineering Intern, PsiQuantum
Quantum computer builder
Open for applications
Quantum computer builder
501-1000 employees
Open for applications
501-1000 employees
Company mission
To build and deploy useful, fault tolerant quantum computers.
Role
Who you are
- Currently pursuing BS/MS/PhD in Computer Science, Engineering, Physics, Math, or related field
- Strong Python skills, including clean API design, OOP, packaging, and testing
- Working knowledge of distributed/remote compute concepts (jobs, clusters, queues) and cloud storage fundamentals
- Familiarity with quantum computing applications/algorithms (resource estimation, quantum simulation, or adjacent numerical methods); comfort with linear algebra and scientific computing
Desirable
- Databricks experience (Jobs API/SDK, workspace organization, catalog/permissions patterns)
- AWS experience (S3, IAM/credentials handling, boto3-style tooling, cost monitoring patterns)
- Experience with scientific Python stacks and GPU compute (JAX/NumPy/SciPy; performance profiling)
- Exposure to quantum chemistry workflows, tensor factorization, or benchmark-driven research engineering
What the job involves
- This is an internship opportunity under the Quantum Applications Software Architecture team
- The intern will work with other software engineers across the company and department to build productionalized software solutions
- They will help build and harden an internal automation platform that lets researchers run quantum-application workloads end-to-end, with reproducible lineage and centralized storage
- A major part of the internship is improving the reliability, governance, and usability of the data/compute platform (Databricks + AWS-backed storage), while also contributing to benchmarking and algorithm-adjacent components of the quantum workflow
- Implement governance patterns for datasets and run outputs (naming, lineage, access boundaries, catalog/volume organization)
- Improve dataset upload validation and guardrails to prevent accidental modification of unrelated storage paths and to enforce consistent metadata and file structure
- Build monitoring and reporting for compute usage and cost drivers (job frequency, runtime, GPU utilization proxies, storage growth, auto-termination effectiveness)
- Deliver dashboards that make platform health and spend understandable to both engineers and researchers
- Refactor existing job setup / submission scripts into a maintainable, testable OOP design (clear interfaces, configuration objects, reusable clients)
- Improve workflow parameter handling for the two-stage pipeline (tensor factorization stage and QRE stage) and standardize outputs for downstream analysis
- Reduce onboarding friction by abstracting authentication and setup into a single, ergonomic path (e.g., a CLI/Python entry point that validates auth, environment, and required dependencies)
- Replace “follow the guide manually” with automation: preflight checks, actionable errors, and self-serve setup validation
Our take
Quantum computing will change the world more than any other imminent technological development, and PsiQuantum sits at the forefront of the charge to build the first quantum computer that will actually work.
The company is unique for the scale of their ambitions. Rather than focusing on what they term “intermediate milestones” like building smaller proof of concept systems, PsiQuantum builds the first large-scale, error-corrected computer, using photonics to deliver over 1,000,000 qubits (current quantum machines have yet to cross the 1,000 qubit mark).
There are plenty of companies building quantum computers, including the likes of IBM and Google, but these prototypical machines lack the size to correct errors, making them exponentially less useful than what PsiQuantum aims for. While other companies operate in the same sphere, PsiQuantum is unequivocally a leader in its field, founded by world-class academics and recently securing $1B in funding, making it the largest funding round for a quantum computing startup.
Steph
Company Specialist at Welcome to the Jungle
Insights
16% employee growth in 12 months
Company
Funding (last 2 of 8 rounds)
Jun 2025
$1bn
GROWTH EQUITY VC
Apr 2025
$0.6m
GRANT
Total funding: $2.7bn
Company benefits
- Financial & Retirement: 401(k) with company match, equity grants, and access to financial wellness tools and planning resources.
- Health: Competitive health coverage for you and your dependents that go beyond your standard medical, dental & vision.
- Wellness: $200 quarterly health reimbursement, 12 therapy + 6 coaching sessions with Modern Health for you and depndents, and annual membership to Care.com.
- Time Off: Discretionary Time Off (DTO) for full-time employees in addition to federal holidays and an end-of-year company shut-down.
- Family Leave: 12 weeks of paid parental leave with the support of a dedicated leave consultant.
- Flexible WOrk: Work in office, hybrid, or remote depending on your team and location.
Company HQ
Palo Alto, CA
Leadership
Jeremy O'Brien
(Co-Founder & CEO)Prior to founding PsiQuantum, researched and taught at universities across the world, including Bristol, Stanford, Osaka, Sydney and Queensland.
Mark Thompson
(Co-Founder & Chief Technologist)Previously worked as an R&D Engineer at Toshiba and was a research fellow at the University of Cambridge. Is currently a Professor of Quantum Photonics at Bristol University as well as Chief Technologist at PsiQuantum.
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