Software Engineer III (Train AI Models Part Time!)
Hackajob
Software Engineering, Data Science
Menlo Park, CA, USA
Posted on Mar 14, 2026
hackajob is collaborating with Mercor to connect them with exceptional professionals for this role.
Join our dynamic team as a Software Engineer and help build cutting-edge AI-powered applications. We are seeking talented full-stack engineers with a passion for rapid prototyping and a proven ability to turn strategic direction into production-quality software. This is a builder role, ideal for scrappy, self-directed engineers who thrive in ambiguity and are excited to work with the latest AI technologies. ## Responsibilities - Full-Stack Development: Design, build, and maintain scalable web applications using React/TypeScript and Python. - AI-Assisted Development: Leverage LLM-based coding tools like Cursor, Copilot, and Claude to accelerate development velocity. - Rapid Prototyping: Quickly iterate on new product ideas, going from 0 to 1 in short timeframes. - API Design & Integration: Build robust APIs and integrate with various internal and external systems. - Data Visualization: Create interactive dashboards and data visualizations using tools like Plotly, D3, or Streamlit. - LLM Application Development: (Strong Plus) Build AI-native applications, engineer prompts, and work with LLM APIs. ## Qualifications - Full-Stack Experience: 3+ years of experience building web applications with React/TypeScript and Python or similar technologies. - AI-Assisted Development: Demonstrated experience using LLM-based coding tools to accelerate development. - Proven Prototyping Skills: A track record of rapidly prototyping and shipping products. - Strong Technical Skills: Proficiency in API design, systems integration, and data visualization. - Python Expertise: Strong proficiency in Python is a primary requirement for this role. - LLM/AI Experience: Experience building AI-native applications, prompt engineering, or working with LLM APIs. - MCP Familiarity: Familiarity with the Model Context Protocol (MCP) or similar agentic frameworks (LangChain, AutoGen, CrewAI, etc.). - WFM/Ops Tooling Experience: Prior experience building workforce management, scheduling, or operations platforms. ## Compensation Bill Rate: $148.93/hr Remote; MPK if possible for folks that want to be onsite Pursuant to the California Fair Chance Act, Los Angeles County Fair Chance Ordinance for Employers, Los Angeles Fair Chance Initiative for Hiring Ordinance, and San Francisco Fair Chance Ordinance, qualified applicants will be considered for assignment with arrest and conviction records. Criminal history may have a direct, adverse, and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above, as well as the abilities to adhere to company policies, exercise sound judgment, effectively manage stress and work safely and respectfully with others, exhibit trustworthiness, meet client expectations, standards, and accompanying requirements, and safeguard business operations and company reputation. ## About Cincinnatus Cincinnatus is an enterprise staffing company that partners with leading technology companies to source and employ highly skilled professionals for full-time and long-term contingent roles. Cincinnatus serves as the employer of record for these engagements, providing W-2 employment, payroll, benefits, and compliance, while placing employees directly within client teams to work on high-impact initiatives. Roles hired through Cincinnatus are not project-based or freelance engagements. They are structured, role-based positions that typically involve full-time or fixed-term commitments, close collaboration with a client's internal teams, and integration into standard enterprise workflows. Cincinnatus is a legal entity separate from Mercor. While opportunities may be discovered through Mercor's platform, employment, onboarding, payroll, and benefits for these roles are administered by Cincinnatus. ## Equal Employment Opportunity Cincinnatus is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, reproductive health decisions, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, political views or activity, or any other legally protected characteristic. Cincinnatus is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans throughout the job application process.
Join our dynamic team as a Software Engineer and help build cutting-edge AI-powered applications. We are seeking talented full-stack engineers with a passion for rapid prototyping and a proven ability to turn strategic direction into production-quality software. This is a builder role, ideal for scrappy, self-directed engineers who thrive in ambiguity and are excited to work with the latest AI technologies. ## Responsibilities - Full-Stack Development: Design, build, and maintain scalable web applications using React/TypeScript and Python. - AI-Assisted Development: Leverage LLM-based coding tools like Cursor, Copilot, and Claude to accelerate development velocity. - Rapid Prototyping: Quickly iterate on new product ideas, going from 0 to 1 in short timeframes. - API Design & Integration: Build robust APIs and integrate with various internal and external systems. - Data Visualization: Create interactive dashboards and data visualizations using tools like Plotly, D3, or Streamlit. - LLM Application Development: (Strong Plus) Build AI-native applications, engineer prompts, and work with LLM APIs. ## Qualifications - Full-Stack Experience: 3+ years of experience building web applications with React/TypeScript and Python or similar technologies. - AI-Assisted Development: Demonstrated experience using LLM-based coding tools to accelerate development. - Proven Prototyping Skills: A track record of rapidly prototyping and shipping products. - Strong Technical Skills: Proficiency in API design, systems integration, and data visualization. - Python Expertise: Strong proficiency in Python is a primary requirement for this role. - LLM/AI Experience: Experience building AI-native applications, prompt engineering, or working with LLM APIs. - MCP Familiarity: Familiarity with the Model Context Protocol (MCP) or similar agentic frameworks (LangChain, AutoGen, CrewAI, etc.). - WFM/Ops Tooling Experience: Prior experience building workforce management, scheduling, or operations platforms. ## Compensation Bill Rate: $148.93/hr Remote; MPK if possible for folks that want to be onsite Pursuant to the California Fair Chance Act, Los Angeles County Fair Chance Ordinance for Employers, Los Angeles Fair Chance Initiative for Hiring Ordinance, and San Francisco Fair Chance Ordinance, qualified applicants will be considered for assignment with arrest and conviction records. Criminal history may have a direct, adverse, and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above, as well as the abilities to adhere to company policies, exercise sound judgment, effectively manage stress and work safely and respectfully with others, exhibit trustworthiness, meet client expectations, standards, and accompanying requirements, and safeguard business operations and company reputation. ## About Cincinnatus Cincinnatus is an enterprise staffing company that partners with leading technology companies to source and employ highly skilled professionals for full-time and long-term contingent roles. Cincinnatus serves as the employer of record for these engagements, providing W-2 employment, payroll, benefits, and compliance, while placing employees directly within client teams to work on high-impact initiatives. Roles hired through Cincinnatus are not project-based or freelance engagements. They are structured, role-based positions that typically involve full-time or fixed-term commitments, close collaboration with a client's internal teams, and integration into standard enterprise workflows. Cincinnatus is a legal entity separate from Mercor. While opportunities may be discovered through Mercor's platform, employment, onboarding, payroll, and benefits for these roles are administered by Cincinnatus. ## Equal Employment Opportunity Cincinnatus is proud to be an Equal Employment Opportunity employer. We do not discriminate based upon race, religion, color, national origin, sex (including pregnancy, childbirth, reproductive health decisions, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, genetic information, political views or activity, or any other legally protected characteristic. Cincinnatus is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans throughout the job application process.