Senior SWE - Python / TypeScript - USA (Contract)

Careerflow Human Data Labs partners with AI companies to bring real-world professional expertise into their products.

About the Role:

We're looking for a high-taste engineer with a strong eye for quality — someone who's worked hands-on with preference data and rubric creation, and knows what separates a good example from a great one. You communicate clearly and can synthesize complex technical work the way a strong MAI dev would: concise, structured, and easy for others to act on. You're comfortable in ambiguous, fast-moving environments and default to shipping over deliberating.

What does day-to-day look like:

• Design, refine, and iterate on rubrics and evaluation criteria for preference data

• Review and label data with a high bar for quality, catching subtle issues others might miss

• Build and maintain pipelines/infra that support data generation, collection, and evaluation workflows

• Synthesize findings from data work into clear write-ups, updates, or recommendations for the team

• Collaborate closely with researchers/engineers to translate qualitative judgment into scalable processes

Required Skills:

• 5+ yrs of proficiency in Python (especially building/maintaining pipelines and infra) or Typescript/Golang/JavaScript (experience contributing to or navigating large codebases like VSCode a plus)

• Hands-on experience with preference data collection and/or rubric creation

• Strong written and verbal communication — able to distill technical work into clear, actionable summaries

• Demonstrated high-taste judgment — able to articulatewhy something is good, not just that it is

• Work in a fully remote environment.

• Opportunity to work on cutting-edge AI projects with leading LLM companies.

Engagement Details:

• Commitments Required: At least 4 hours per day and minimum 20 hours per week with overlap of 4 hours with PST.

• Employment type: Contractor assignment (no medical/paid leave)

• Duration of contract: 3 month; [expected start date is next week]

• Location: USA, Canada

Evaluation Process (approximately 30 mins) :

• One round of interview (30 mins of technical & cultural discussion)

5+ years of professional experience

Total number of positions:320

Engagement Length: 4 weeks, Full-time (8 hours/day) 20 hours per week. Overlap 4 hours with PST

6-week project, with a preferred commitment of up to20 hours per week.

Fully remote, with payment inUSD.

Start as soon as you successfully pass the assessment.