PsiQuantum · 2 hours ago
Staff Software Engineer
Palo Alto, CA
Full-time
Onsite
Lead/Staff
$190K/yr - $215K/yr
8+ years expPsiQuantum is focused on building the first useful quantum computers capable of delivering significant breakthroughs. They are seeking a Full-Stack Platform Lead to design and implement backend and web systems for their Quantum Architecture platform, working closely with physicists and researchers to develop robust software systems.
ComputerHardwareQuantum ComputingSemiconductorSoftware
Responsibilities
Architect and implement the QA platform’s backend services and APIs using modern Python web frameworks (e.g., FastAPI, Flask, Django, or equivalent), ensuring clean interface boundaries and maintainable abstractions
Design and evolve Python-based pipelines that manage data, computation, and integration with research and simulation systems - focusing on reliability, composability, and debuggability
Develop modular service interfaces for data access, configuration, and workflow orchestration, ensuring alignment between backend systems and frontend or computational clients
Establish infrastructure-as-code foundations using Terraform, managing multi-environment deployments and scaling across AWS services (EC2, S3, EKS, IAM, CloudWatch, etc.)
Own schema design, indexing strategies, and performance optimization for database backends (e.g., Postgres, MySQL, and MongoDB)
Implement distributed caching, task orchestration, and stateful compute components using Redis or Valkey to support low-latency data and job pipelines
Integrate and manage authentication and authorization layers (OAuth2, OIDC, SSO, IAM roles), ensuring secure, policy-driven service interactions
Define and enforce rigorous SDLC and engineering hygiene - type-checked Python (e.g., mypy, pydantic), comprehensive testing, CI/CD pipelines, and reproducible environments
Develop internal developer tooling and interfaces (CLI utilities, REST/gRPC endpoints, Python client libraries) to enable high-velocity platform development
Lead API versioning, schema evolution, and documentation standards across backend systems
Design, implement, and maintain both backend and frontend components of the QA platform - owning the full stack from UI to Python APIs and data layers, ensuring clean, well-specified, and performant interfaces across the system
Implement observability frameworks - structured logging, metrics, and distributed tracing - to ensure operational insight and performance analysis across services
Mentor engineers in platform design, Python performance optimization, and large-scale system composition
Qualification
Required
8+ years of professional software engineering experience, with extensive backend and platform design expertise
Expert proficiency in Python, including asynchronous programming, typing, dependency management, packaging, and performance profiling
Hands-on experience with modern web frameworks (FastAPI, Flask, Django) and Python-based interface patterns (pydantic models, dependency injection, API schemas)
Deep familiarity with pipeline design patterns - task orchestration, async workflows, and dataflow systems - built in Python or hybrid stacks
Strong command of AWS services (EC2, EKS, S3, IAM, CloudWatch, Lambda) and infrastructure automation via Terraform
Proficiency with databases (Postgres, MySQL, MongoDB), schema design, migrations, and query optimization
Experience designing and maintaining caching and state systems (Redis, Valkey) for scalable backend workloads
Deep understanding of auth(c/z), secrets management, and service-to-service identity mechanisms
Strong SDLC discipline - CI/CD (GitLab, GitHub Actions), static analysis, code review automation, and test-driven development
Experience designing internal APIs, Python client SDKs, and developer-facing tools with strong focus on usability and maintainability
Working knowledge of frontend integration (React, TypeScript) and REST/gRPC contract management
Operational familiarity with observability and profiling tools (Prometheus, Grafana, OpenTelemetry, cProfile, py-spy, Perf)
Ability to design for long-term maintainability - balancing low-level optimization with clean architectural separation and stable interfaces
Preferred
Familiarity with HPC environments and Slurm-based job orchestration
Experience in scientific computing, simulation, or high-performance data environments
Benefits
Full time roles are eligible for equity and benefits.
Company
PsiQuantum
PsiQuantum focuses on developing a scalable quantum computer using photonic qubits.
501-1000 employees
H1B Sponsorship
PsiQuantum has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (12)
2024 (10)
2023 (4)
2022 (7)
2021 (15)
2020 (5)
Funding
Current Stage
Late StageTotal Funding
$2.3BKey Investors
BlackRockAtomicoFounders Fund
2025-09-10Series E· $1B
2025-05-30Series Unknown· $22M
2024-11-05Secondary Market
Leadership Team
Peter Shadbolt
Co-founder and Chief Strategy Officer
Recent News
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2025-12-09
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