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Freelance Java Developer Startup Jobs in Fairfield, CA

We're seeking a Founding Software Engineer for an early staged AI & LLM startup based in San ... Experience in Python or other programming languages such as Go, Java, or C++ * Experience in web ...

About the Role We're a Y Combinator-backed EdTech startup on a mission to help people acquire ... Improve developer tooling, CI/CD pipelines, and observability. * Influence foundational ...

We're seeking a Founding Software Engineer for an early staged AI & LLM startup based in San ... Experience in Python or other programming languages such as Go, Java, or C++ * Experience in web ...

We're seeking a Founding Software Engineer for an early staged AI & LLM startup based in San ... Experience in Python or other programming languages such as Go, Java, or C++ * Experience in web ...

... startup environment * Experience with programming languages such as Python, Java, or similar, and familiarity with APIs, data integration, and cloud platforms. * Strong technical background with ...

... startup environment * Experience with programming languages such as Python, Java, or similar, and familiarity with APIs, data integration, and cloud platforms. * Strong technical background with ...

Principal Software Engineer

Oakland, CA · Hybrid

$155K - $207K/yr

Java (JVM, JIT, GC tuning, thread management), JUnit * Claude Code * Docker and Kubernetes * AWS ... Experience working in startup environments. #LI-HYBRID #LI-EM1

You should be a passionate developer who wants to make a major impact at an early-stage startup ... Python, Java, AngularJS, JavaScript, Apache, Nginx, Redis, MySQL and PostgreSQL - Strong to ...

You should be a passionate developer who wants to make a major impact at an early-stage startup ... Python, Java, AngularJS, JavaScript, Apache, Nginx, Redis, MySQL and PostgreSQL - Strong to ...

Requirements * Startup mindset with a strong sense of ownership, urgency, and pragmatism in ... in Java, C#, Go, or Python * Willingness to work in person at our office 4-5 days a week Nice to ...

10X Senior Software Engineer San Francisco, CA | Hybrid | Full‑Time | Senior Level | Posted May ... Experience with Test‑first development, profiling Java apps, data access APIs. * Startup ...

... startup speed. In your first six months, you'll establish and improve automated testing coverage ... You write automated tests in TypeScript, JavaScript, Python, Java, or C# * You have a strong ...

... startup speed. In your first six months, you'll establish and improve automated testing coverage ... You write automated tests in TypeScript, JavaScript, Python, Java, or C# * You have a strong ...

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Freelance Java Developer Startup information

See Fairfield, CA salary details

$15

$57

$78

How much do freelance java developer startup jobs pay per hour?

As of Aug 21, 2026, the average hourly pay for freelance java developer startup in Fairfield, CA is $57.70, according to ZipRecruiter salary data. Most workers in this role earn between $49.90 and $64.57 per hour, depending on experience, location, and employer.

What is the difference between Freelance Java Developer Startup vs Freelance Java Developer Corporate?

AspectFreelance Java Developer StartupFreelance Java Developer Corporate
Work EnvironmentIndependent, flexible, project-basedRemote or office-based, structured projects
Client InteractionDirect with startups or small teamsOften with corporate clients or departments
Project ScopeVaried, often innovative or MVP developmentLong-term, maintenance, or enterprise solutions
Required CredentialsJava certification, portfolio, experienceJava certification, experience, possibly more formal credentials

Freelance Java Developer Startup roles typically involve working independently on diverse projects for startups, emphasizing innovation and flexibility. In contrast, Freelance Java Developer Corporate roles often focus on structured, long-term projects for established companies, with more formal client interactions and expectations.

Founding Engineer

HMBL

San Francisco, CA

Full-time

Re-posted 13 days ago


Job description

HMBL is your premiere Talent Partner and Executive Search Solution. We were founded on the fact that technical recruiting is most fruitful via partnership --than it is transactional.

We partner the most innovative, cutting-edge tech companies. HMBL stances its foundational values around transparency, overcommunication, and the desire to improve. We leverage best industry practices, historical and predictive data and AI to acquire the industry's top 5% of technical talent.

Are you passionate about making the impossible possible? Are you interested in working with the best and brightest in the tech industry? Do you want to work on the front-lines of innovation?

We have what you're looking for!

Stay hungry. Stay HMBL.

We're seeking a Founding Software Engineer for an early staged AI & LLM startup based in San Francisco.
About the Role
  • Hands on experience developing technology using Python
  • A builder of business logic with Web Framework such as Django and MySQL
  • Experienced in Nginx, Kafka, MySQL, Cassandra, Redis, and big data platforms
  • A developer that writes reusable, testable and efficient code
  • An effective communicator at all levels
Requirements
  • 3+ years of experience in developing/architecting large scale Web services
  • Bachelors, Master or PhD in Computer Science or related fields from a top University
  • Experience in databases, distributed systems, and backend performance measurement and optimization
  • Experience in Python or other programming languages such as Go, Java, or C++
  • Experience in web frameworks such as Django
  • Experienced in MySQL, Redis, Elastic Search, Kafka, and Cassandra
  • Good understanding of database internals like transactions and indexes. Experience in database schema design
  • Experience in working on the AWS
  • Wants ownership and impact and looking to own projects from end to end
  • Substantial production server experience or equivalent
Equal Opportunity Employer:
We are an equal opportunity employer and value diversity at our company. We prohibit any form of workplace discrimination based on race, color, ethnicity, national origin or ancestry, citizenship, religion, sex, sexual orientation, gender identity or expression, veteran status, marital status, pregnancy or parental status, or disability. Applicants will not be discriminated against based on these or other protected categories or social identities
apply for this job

HMBL logo

About HMBL

Sourced by ZipRecruiter

Industry

Recruiting and staffing services

Company size

1 - 10 Employees

Headquarters location

San Francisco, CA, US

Year founded

2018