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Software Developer Contract Jobs in California (NOW HIRING)

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Software Engineer (Contract)

San Francisco, CA · On-site

$70 - $80/hr

About The Role We are seeking a mid-level Software Engineer with strong Python experience to join our growing engineering team. You will design, build, and maintain scalable applications and services ...

GRVTY

Jr Embedded Software Developer

Ventura, CA · On-site

$90K - $100K/yr

What Impact You'll Have GRVTY is seeking a passionate Junior Embedded Software Engineer to join our ... federal contract labor categories, wage rates, prior experience, skillsets, education, and ...

GRVTY

Jr Embedded Software Developer

Ventura, CA · On-site

$90K - $100K/yr

What Impact You'll Have GRVTY is seeking a passionate Junior Embedded Software Engineer to join our ... federal contract labor categories, wage rates, prior experience, skillsets, education, and ...

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All JobsSoftware Developer Contract JobsSoftware Developer Contract Jobs in California

Software Developer Contract information

See California salary details

$47.4K

$110.4K

$163.8K

How much do software developer contract jobs pay per year?

As of Jul 13, 2026, the average yearly pay for software developer contract in California is $110,380.00, according to ZipRecruiter salary data. Most workers in this role earn between $88,800.00 and $128,300.00 per year, depending on experience, location, and employer.

What are the typical work arrangements and expectations for contract Software Developers?

Contract Software Developers are usually hired for specific projects or defined timeframes, which can range from several weeks to multiple months, often working remotely or on-site depending on client needs. They are expected to quickly understand project requirements, deliver code efficiently, and collaborate with both in-house teams and other contractors, maintaining flexibility to adapt to different workflows and tools. Because contract roles may not include the same onboarding experience as permanent positions, self-motivation and strong independent work habits are important. This work arrangement provides valuable exposure to various industries and technologies, often expanding a developer’s professional network and enhancing career versatility.

What are the key skills and qualifications needed to thrive in the Software Developer Contract position, and why are they important?

A successful Software Developer Contract requires strong programming abilities, solid knowledge of software development methodologies, and relevant project or domain expertise, often supported by a degree in computer science or a related field. Familiarity with languages like Java, Python, or JavaScript, as well as tools such as Git, Agile frameworks, and certification in areas like AWS or Scrum, is highly valued. Excellent problem-solving skills, adaptability, effective communication, and an ability to quickly integrate into new teams are crucial soft skills. These competencies enable contract developers to deliver high-quality solutions while efficiently navigating diverse projects and rapidly changing work environments.

What is a Software Developer Contract job?

A Software Developer Contract job is a temporary or project-based position where a developer is hired for a specific duration, typically through a contract agreement. Contractors may work independently, for an agency, or directly with a company to develop, test, and maintain software applications. These roles often offer flexibility but may not include benefits like health insurance or paid time off. Contract developers are usually paid hourly or per project and may work remotely or on-site depending on the employer's needs.

What are the most commonly searched types of Software Developer jobs in California? The most popular types of Software Developer jobs in California are:
What are popular job titles related to Software Developer Contract jobs in California? For Software Developer Contract jobs in California, the most frequently searched job titles are:
What job categories do people searching Software Developer Contract jobs in California look for? The top searched job categories for Software Developer Contract jobs in California are:
What cities in California are hiring for Software Developer Contract jobs? Cities in California with the most Software Developer Contract job openings:
Software Developer Contract jobs near you
Infographic showing various Software Developer Contract job openings in California as of July 2026, with employment types broken down into 50% Full Time, and 50% Contract. Highlights an 100% In-person job distribution, with an average salary of $110,380 per year, or $53.1 per hour.
Frontend Systems Developer (contract)

Frontend Systems Developer (contract)

Atomic Machines

Emeryville, CA • Hybrid

$120K - $139K/yr

Other

This job post has expired today. Applications are no longer accepted.

Job description

Atomic Machines is ushering in a new era of micromanufacturing with its Matter Compiler technology platform. This platform enables new classes of micromachines to be designed and built by providing manufacturing processes and a materials library that are inaccessible to semiconductor manufacturing methods. It unlocks MEMS manufacturing not only for device classes that could never be produced by semiconductor methods, but also for entirely new categories. Furthermore, this digital platform is fully programmable in the way 3D printing is digital-but whereas 3D printing produces parts of a single material using a single process, the Matter Compiler technology platform is a multi-process, multi-material system: bits and raw materials go in, and complete, functional micromachines come out. The Atomic Machines team has also created an exciting first device-made possible only through the Matter Compiler technology platform-that we will be unveiling to the world soon.
 
Our offices are in Emeryville and Santa Clara, California.
About The Role

In this role you will help maintain and extend a web-based visual graph editor for manufacturing workflows. Users create and connect nodes representing materials/workpieces/tools and manufacturing steps (processes/inspections), validate the resulting workflow against catalogs and strict data contracts, and export a schema-compliant JSON representation for downstream tooling.

This role blends UI engineering with data integrity work. The editor must stay responsive on large graphs, preserve correctness (IDs, validation, export format), as well as support collaboration workflows through version control integrations.

This is a part-time, hybrid, freelance/contract role. Hours:

  • 1st 60 days: 20-40 hours per week
  • Ongoing: 10-20 hours (minimum) per week
What You'll Do
  • Build and maintain a React + TypeScript UI for a graph editor (node/edge creation, selection, multi-select, drag/drop, property panels)
  • Implement schema-driven validation and export (JSON Schema / AJV), ensuring stable, backwards-compatible outputs as schemas evolve
  • Improve performance and reliability for large graphs (rendering, minimizing re-renders, preventing UI jitter, safe persistence)
  • Support workflows around identity/ID rules, including ID generation, transformations on copy/paste/import, and "minting/locking" behaviors that freeze certain fields once finalized
  • Maintain integrations used in real production workflows: 
    • GitLab API (branching, committing files, MR workflows)
    • Methods API (catalog sync, offline fallback, validation that blocks pushes when API is down)
    • Authentication (Okta)
  • Ship small-to-medium features end-to-end: UI, state changes, validation, tests, and docs
  • Triage bugs from real users (manufacturing/process engineers), reproduce quickly, and implement safe fixes
  • Add/maintain unit tests (Jest + TS) around tricky logic (ID transformation, export validation, API sync behavior)
  • Keep the build/lint/test pipeline healthy (Vite, TypeScript, ESLint, Jest) and handle dependency upgrades carefully
  • Collaborate asynchronously with a cross-functional team (process, production, AI) through clear PRs, strong commit hygiene, and pragmatic technical decisions
  • Tools/Stack You'll Work With: React 18, TypeScript, Vite, Tailwind CSS, ReactFlow, AJV (JSON Schema), Jest, ESLint, GitLab API, OpenAPI, Okta
What You'll Need
  • Experience building complex, stateful UI systems (not CRUD/dashboard apps)
  • Strong React + TypeScript with state management + performance optimization
  • Experience with graph/diagram editors or similar interaction-heavy UIs
  • Experience with large in-memory data + UI/data synchronization
  • Experience with validation systems + deterministic outputs (schema, exports)
  • Strong debugging in complex systems + ability to explain tradeoffs
  • Experience leading complex, ambiguous problems across cross-functional teams with multiple stakeholders
Bonus Points For:
  • Manufacturing background (MES, process planning, CAD/CAM adjacent tooling, "recipes/methods/catalog" concepts)
  • JSON Schema / AJV experience and comfort with strict data contracts
  • GitLab API experience, auth systems (Okta/OIDC), or "internal tool" deployment constraints
 

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