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Open Source Programmer Jobs in California (NOW HIRING)

Visa Hunt

Open Source Engineer

San Francisco, CA · On-site

$200 - $250/hr

Open Source Engineer Firecrawl is looking for a high-agency engineer to own our open source work. That starts with the main Firecrawl repo -- 170k+ stars and counting -- which should stay the easiest ...

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Firecrawl

Open Source Engineer

San Francisco, CA · On-site

$200 - $250/hr

Open Source Engineer Firecrawl is looking for a high-agency engineer to own our open source work. That starts with the main Firecrawl repo -- 170k+ stars and counting -- which should stay the easiest ...

Firecrawl

Open Source Engineer

San Francisco, CA · On-site

$235K - $260K/yr

Open Source Engineer Firecrawl is looking for a high-agency engineer to own our open source work. That starts with the main Firecrawl repo - 170k+ stars and counting - which should stay the easiest ...

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Infographic showing various Open Source Programmer job openings in California as of August 2026, with employment types broken down into 1% As Needed, 75% Full Time, 19% Part Time, and 5% Contract. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution.

Open Source Engineer

Pleasanton, CA • On-site

Rootshell Enterprise Technologies, Inc.
11 - 50 employees
Learn more about Rootshell Enterprise Technologies, Inc.external

Full-time

Re-posted yesterday

Job description

Hello All,
Greetings from Rootshell Inc.
Rootshell Enterprise Technologies Inc. is a recognized provider of professional IT Consulting services in the US. We are actively seeking Open Source Engineer for one of our client, Please share your resume with current location & full contact info
Role:Open Source Engineer
Location: Pleasanton, CA - Hybrid
JD:
We're hiring a self-motivated Open Source Engineer to build, automate, and operate secure, scalable infrastructure for a modern medical research and laboratory environment. You'll focus on medical imaging, laboratory systems, data processing, and research workflows in a regulated, HIPAA-compliant setting. The right candidate brings deep Python and Linux automation skills and is comfortable working across Kubernetes, virtualized, and mixed-OS environments.
Key Responsibilities
  • Build and maintain production-grade automation in Python and shell, including workflow orchestration with Apache Airflow, secure data transfers (SFTP), and reliability improvements.
  • Design, deploy, and operate on-prem Kubernetes clusters (Rancher RKE2 preferred), manage Helm deployments, and handle secrets with HashiCorp Vault.
  • Administer Linux/UNIX systems (RHEL 9.x focus): OS patching, lifecycle management, security hardening, and Ansible automation.
  • Create repeatable VM provisioning pipelines and standardized system builds; support mixed Linux and Windows environments as required.
  • Develop and maintain medical imaging workflows (DICOM query/retrieve, image pulls, storage, automated de-identification) using tools such as Orthanc, DCMTK, or CTP.
  • Support laboratory and research platforms, including LIMS infrastructure, data ingestion workflows, and Windows batch/integration scripts when needed.
  • Install, test, upgrade, and maintain research and enterprise applications across test and production environments (examples: LIMS, JBOSS-based systems, Appian, data analysis tools).
  • Provision and optimize storage access (NFS, S3) and integrate with high-performance storage solutions (Weka, VAST, EMC).
  • Manage Jupyter, R, and RStudio environments, including package management and researcher support.
  • Implement and maintain GitLab-based CI/CD pipelines, infrastructure-as-code, and version-controlled operational runbooks.
  • Ensure systems meet HIPAA, CAP, and ISO compliance requirements - maintain documentation, change control, audit evidence, and traceability.
  • Provide senior-tier Linux/UNIX support to technical teams and researchers, mentor staff, and document operational best practices.
  • Operate independently across multiple concurrent efforts; adapt to evolving laboratory and research needs.

Required Qualifications
  • Advanced Python automation skills; strong Bash/shell scripting experience.
  • Hands-on Linux administration experience (RHEL preferred), including patching, security, and lifecycle management.
  • Proven experience managing on-prem Kubernetes platforms and Helm-based deployments.
  • Solid understanding of Apache Airflow, HashiCorp Vault, and workflow-driven automation.
  • Experience supporting DICOM-based medical or research imaging systems.
  • Working knowledge of NFS and S3 storage models and high-performance storage environments.
  • Demonstrated experience supporting regulated research or healthcare systems, with audit and compliance readiness.
  • Proficiency with GitLab repositories, CI/CD pipelines, and automation workflows.
  • Strong communication, documentation, and cross-disciplinary collaboration skills.

Preferred Qualifications
  • Hands-on experience with LIMS platforms, laboratory instrument integrations, or imaging research workflows.
  • Experience supporting data science platforms or research computing environments.
  • Familiarity with Windows batch scripting for laboratory/data ingestion workflows.
  • Prior experience in healthcare, research, or regulated laboratory environments.

With regards
Naveen | Talent Acquisition
Rootshell Enterprise Technologies Inc.
Naveen@rootshellinc.com | www.rootshellinc.com

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