San Francisco, CA · On-site +1
... ship real banking software at extraordinary speed. The Role You have built fintech or banking ... fractional work options) Culture of low ego, high trust, fast shipping Interview Process (Async ...
San Francisco, CA · On-site +1
... ship real banking software at extraordinary speed. The Role You have built fintech or banking ... fractional work options) Culture of low ego, high trust, fast shipping Interview Process (Async ...
Active client engagements as an independent enablement consultant or fractional enablement leader ... Comfort recommending and implementing software as part of your engagements * Bonus points for an ...
Active client engagements as an independent enablement consultant or fractional enablement leader ... Comfort recommending and implementing software as part of your engagements * Bonus points for an ...
Carlsbad, CA · On-site
$24.50 - $33.25/hr
Upload and route vendor invoices through AP software for approval and processing. * Assign accurate ... Company Description Optima Office provides Outsourced Accounting, Fractional CFO and COO services ...
Quick apply
Carlsbad, CA · On-site
$24.50 - $33.25/hr
Upload and route vendor invoices through AP software for approval and processing. * Assign accurate ... Company Description Optima Office provides Outsourced Accounting, Fractional CFO and COO services ...
$70K - $85K/yr
Support Fractional Controller with tax preparation and annual financial reporting. * Maintain ... Strong Excel skills and proficiency with accounting software. * Ability to manage multiple ...
$70K - $85K/yr
Support Fractional Controller with tax preparation and annual financial reporting. * Maintain ... Strong Excel skills and proficiency with accounting software. * Ability to manage multiple ...
Irvine, CA · On-site
$25 - $35/hr
As a fractional and outsourced HR partner, we help companies build scalable, compliant, and people ... Proficiency in HRIS and benefits administration software. * Ability to handle sensitive and ...
Quick apply
Irvine, CA · On-site
$25 - $35/hr
As a fractional and outsourced HR partner, we help companies build scalable, compliant, and people ... Proficiency in HRIS and benefits administration software. * Ability to handle sensitive and ...
Irvine, CA · On-site
$22 - $30/hr
... ovens and software to run cure cycles and review post-process data • Perform resistance ... in fractional and decimal formats • Ability to read, write, and communicate effectively in ...
Irvine, CA · On-site
$22 - $30/hr
... ovens and software to run cure cycles and review post-process data • Perform resistance ... in fractional and decimal formats • Ability to read, write, and communicate effectively in ...
... ship real banking software at extraordinary speed. The Role You have built fintech or banking ... including fractional work options) • Culture of low ego, high trust, fast shipping Interview ...
... ship real banking software at extraordinary speed. The Role You have built fintech or banking ... including fractional work options) • Culture of low ego, high trust, fast shipping Interview ...
Irvine, CA · On-site
$22 - $30/hr
... ovens and software to run cure cycles and review post-process data • Perform resistance ... in fractional and decimal formats • Ability to read, write, and communicate effectively in ...
Irvine, CA · On-site
$22 - $30/hr
... ovens and software to run cure cycles and review post-process data • Perform resistance ... in fractional and decimal formats • Ability to read, write, and communicate effectively in ...
San Diego, CA · Hybrid
$140K - $170K/yr
... fractional resource for clients across diverse industries. This role is ideal for a seasoned ... Proven experience leading software integrations, ERP implementations, and financial systems ...
San Diego, CA · Hybrid
$140K - $170K/yr
... fractional resource for clients across diverse industries. This role is ideal for a seasoned ... Proven experience leading software integrations, ERP implementations, and financial systems ...
Temecula, CA · On-site
$105K - $110K/yr
Proficient in MS Office (Outlook, Excel, Word, PowerPoint), HRIS, and ATS Software. * Able to push ... Fractional CFO and COO services along with Human Resources Support. We serve close to 300 companies ...
Quick apply
Temecula, CA · On-site
$105K - $110K/yr
Proficient in MS Office (Outlook, Excel, Word, PowerPoint), HRIS, and ATS Software. * Able to push ... Fractional CFO and COO services along with Human Resources Support. We serve close to 300 companies ...
Sunnyvale, CA · On-site
$110K - $155K/yr
You'd be joining a small, commercial team, including a fractional strategic-accounts lead and a ... Collaborate across laboratory, software, and operations teams * Tackle problems where domain ...
Sunnyvale, CA · On-site
$110K - $155K/yr
You'd be joining a small, commercial team, including a fractional strategic-accounts lead and a ... Collaborate across laboratory, software, and operations teams * Tackle problems where domain ...
Los Angeles, CA · On-site
$150 - $200/hr
Partner with fractional Finance, Legal, HR and IT to ensure operational compliance, financial ... Evaluate, implement, and optimize the agency's technology stack (project management software, CRM, ...
Los Angeles, CA · On-site
$150 - $200/hr
Partner with fractional Finance, Legal, HR and IT to ensure operational compliance, financial ... Evaluate, implement, and optimize the agency's technology stack (project management software, CRM, ...
San Francisco, CA · On-site
$126K - $166K/yr
An existing network across airlines, charter and fractional operators, or collegiate and military flight training programs * Experience selling technical or hardware-plus-software products into ...
San Francisco, CA · On-site
$126K - $166K/yr
An existing network across airlines, charter and fractional operators, or collegiate and military flight training programs * Experience selling technical or hardware-plus-software products into ...
Bodega Bay, CA · On-site +1
$230K - $322K/yr
Bachelor's degree in Electrical Engineering, or related technical discipline * 7+ years of experience in the design and development of fractional-N PLLs, DLLs, and their sub-circuits in FinFET CMOS ...
Bodega Bay, CA · On-site +1
$230K - $322K/yr
Bachelor's degree in Electrical Engineering, or related technical discipline * 7+ years of experience in the design and development of fractional-N PLLs, DLLs, and their sub-circuits in FinFET CMOS ...
San Diego, CA · On-site
$230K - $322K/yr
Bachelor's degree in Electrical Engineering, or related technical discipline * 7+ years of experience in the design and development of fractional-N PLLs, DLLs, and their sub-circuits in FinFET CMOS ...
San Diego, CA · On-site
$230K - $322K/yr
Bachelor's degree in Electrical Engineering, or related technical discipline * 7+ years of experience in the design and development of fractional-N PLLs, DLLs, and their sub-circuits in FinFET CMOS ...
San Diego, CA · On-site +1
$230K - $322K/yr
Bachelor's degree in Electrical Engineering, or related technical discipline * 7+ years of experience in the design and development of fractional-N PLLs, DLLs, and their sub-circuits in FinFET CMOS ...
San Diego, CA · On-site +1
$230K - $322K/yr
Bachelor's degree in Electrical Engineering, or related technical discipline * 7+ years of experience in the design and development of fractional-N PLLs, DLLs, and their sub-circuits in FinFET CMOS ...
San Francisco, CA · Hybrid
$155K - $190K/yr
... infosec assessments, fractional Chief Information Security Officer (or vCISO) consulting ... Proficient with Microsoft Office Suite or similar software. * Strong problem solving and analytical ...
Quick apply
San Francisco, CA · Hybrid
$155K - $190K/yr
... infosec assessments, fractional Chief Information Security Officer (or vCISO) consulting ... Proficient with Microsoft Office Suite or similar software. * Strong problem solving and analytical ...
Palo Alto, CA · On-site +1
... fractional, and payrolled. This portfolio includes the Upwork Marketplace, which connects ... software development, sales & marketing, customer support, finance & accounting, and more, the ...
Palo Alto, CA · On-site +1
... fractional, and payrolled. This portfolio includes the Upwork Marketplace, which connects ... software development, sales & marketing, customer support, finance & accounting, and more, the ...
San Francisco, CA · On-site
$80 - $120/hr
An existing network across airlines, charter and fractional operators, or collegiate and military flight training programs * Experience selling technical or hardware-plus-software products into ...
San Francisco, CA · On-site
$80 - $120/hr
An existing network across airlines, charter and fractional operators, or collegiate and military flight training programs * Experience selling technical or hardware-plus-software products into ...
Burbank, CA · On-site
$155K - $190K/yr
... infosec assessments, fractional Chief Information Security Officer (or vCISO) consulting ... Proficient with Microsoft Office Suite or similar software. * Strong problem solving and analytical ...
Burbank, CA · On-site
$155K - $190K/yr
... infosec assessments, fractional Chief Information Security Officer (or vCISO) consulting ... Proficient with Microsoft Office Suite or similar software. * Strong problem solving and analytical ...
| Aspect | Fractional Software | Software Developer |
|---|---|---|
| Credentials | Typically no specific certifications required; focus on experience | Often holds degrees or certifications in computer science or related fields |
| Work Environment | Remote or freelance, project-based engagements | Full-time or part-time employment, often in an office or remote setting |
| Employer & Industry Usage | Used by startups, SMBs, and consulting firms for flexible expertise | Employed by companies to develop software solutions in various industries |
| Search & Comparison Intent | Seeking flexible, part-time software expertise | Looking for full-time or permanent software development roles |
In summary, Fractional Software professionals provide flexible, project-based software expertise without the need for full-time employment, whereas Software Developers typically work as full-time employees with a focus on ongoing software development within a company.
For Fractional Software jobs in California, the most frequently searched job titles are:
The top searched job categories for Fractional Software jobs in California are:
Cities in California with the most Fractional Software job openings:
Rockstar is recruiting for a pioneering, AI-native fintech startup. Our client is building a next-generation banking platform from the ground up, designed for a world where human intent and AI execution converge. The team operates with a unique, async-first workflow that blends deep human expertise with AI agents to ship real banking software at extraordinary speed.
The Role
You have built fintech or banking products as an engineer. You have stepped into product thinking. Now you want to do both-at AI speed.
This is not traditional product management; this is a Product Builder role. The candidate will define what to build, describe it with extreme precision, and work alongside AI agents that turn specifications into production code. The primary output is not meetings or Jira tickets; it is clear, rigorous documentation and use of the latest AI tools that becomes the product at 5x the speed of other startups.
What You'll Do
Own product roadmap for banking and financial integrations
Design and prototype banking features (payments, compliance, flows) using AI tools
Write high-fidelity specifications that humans and AI agents execute
Make real-time architectural decisions and validate AI-generated code
Partner with legal, compliance, and operations teams on regulatory requirements
Communicate primarily through memos and documentation, not meetings
Why Writing Is the Core Skill:
In this workflow, language is leverage.
Clear specifications and AI prompts unlock exponential speed and build quality. Ambiguity kills it.
You'll Thrive here If you:
Rewrite sentences until they perfectly capture nuance
Enjoy describing user experience, edge cases, and systems in painful detail
Believe documentation should be the source of truth
What We're Looking For:
Required
5+ years engineering experience in banking or fintech (non-negotiable)
3+ years in product, business, operations, or hybrid roles
Strong understanding of distributed systems and APIs
Ability to prototype and review AI-generated code
Preferred
Founder or side-project experience
Shipped developer-facing products or APIs
Long-form writing experience (10,000+ word documents, specifications, essays)
Obsession with precision in language
Actively experimenting with AI tools to build software
Experience at least one fast-growing Fintech or LegalTech startup
How We Build (AI-Native Workflow)
1. Write a detailed specification
2. AI agents generate code, designs, and documentation
3. Review a short demo video
4. Approve Pull requests and deploys are created automatically
You'll Thrive Here
Async-first thinkers who prefer writing over talking
Low-ego builders who ship early and iterate fast
Self-directed operators who do not need hand-holding
Contrarians who believe meetings are usually a bug
This Role Is NOT for You If You...
Prefer calls over writing
Need heavy external structure or daily check-ins
Want rigid role boundaries ("just PM" or "just engineer")
Are skeptical of AI-driven development
Do your best work only in offices
What We Offer
Competitive salary + meaningful equity
Profit sharing tied to AI workflows that save resources
Fully remote, async-first environment
Time flexibility (including fractional work options)
Culture of low ego, high trust, fast shipping
Interview Process (Async-Friendly)
1. Application + written questions
2. Spec-writing exercise (used to generate real AI output)
3. Technical and product deep dive
4. Language & AI assessment
5. Culture and team conversations
Before You Apply Ask yourself:
Does AI-driven product building excite me?
Do I enjoy writing more than meetings?
Am I comfortable being "ruined for the ordinary"?
If yes, we'd love to meet you.
About the Client
The client is building an AI-native banking platform-designed from the ground up for a world where humans write intent and AI builds execution. The teams are a mix of humans and AI agents, operating async, moving fast, and shipping real banking software today (not theory). If you believe clarity of thinking matters more than lines of code, you will feel at home here.
Sourced by ZipRecruiter
201 - 500 Employees
Las Vegas, NV, US
2001
