Hasbro
Applied AI Engineer
Boston, Massachusetts, United States · Mid
Stay score
odds of building a lasting career here
Sponsors, but it's cap-subject — you still face the weighted lottery (~45% per draw at Level III). Good if you win; have a cap-exempt backup on your list.
Lottery odds assume a STEM candidate.
Personalize to your clock →H-1B wage level
the lottery is wage-weighted — each level is one more entry
The bottom of this range ($109,200) is below the Level I prevailing wage of $114,275. An H-1B cannot be filed below the prevailing wage, so an offer at the floor of this band could not be sponsored as posted.
Based on the DOL prevailing wage for this occupation and worksite, a base salary of $138,237 would place this position at wage Level II. That figure is within the posted range, and I'd like to target it. This role classifies under "Software Developers" for prevailing-wage purposes.
DOL prevailing wage, 2026-27 wage year · Software Developers (15-1252) · Boston-Cambridge-Newton, MA-NH. Wage level is derived by USCIS from the offered wage, occupation and worksite; the occupation shown is inferred from the job title.
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About the role
- This role sits at the center of a new and constantly evolving set of challenges.
Responsibilities
- Design, implement, and continuously refine system prompts, character behavior definitions, and guardrails for our AI character platform.
- Build evaluation frameworks to measure character fidelity, response quality, and safety - establishing quantitative standards for what "in character" actually means across interaction types.
- Architect and implement RAG systems to ground character responses in canonical knowledge, including embedding strategies, vector retrieval, and relevance evaluation.
- Partner with creative and brand teams to translate character attributes - personality, voice, canon, tone, and boundaries - into precise, testable AI behavior and system requirements.
- Lead prompt versioning, regression testing, and model evaluation practices to ensure character behavior remains consistent across provider updates and model changes.
- Evaluate and adopt emerging techniques in prompt engineering, agentic design, and LLM evaluation that meaningfully advance the quality and reliability of character experiences.
- Deep expertise in prompt engineering - system prompt design, few-shot techniques, chain-of-thought, multi-turn conversation management, and structured output.
- Familiarity with how voice AI services work (TTS, STT) - enough to understand how spoken delivery shapes prompt and response design.
- Life & Family Support
Requirements
- 3+ years of experience building and shipping production LLM-powered systems.
- Hands-on experience with RAG architectures: embedding models, vector stores, chunking strategies, and retrieval evaluation.
- Proficiency with major LLM APIs (OpenAI, Google Gemini, Anthropic, or equivalent) and experience making principled decisions between them.
- Must be located in one of the following: Health & Wellness, Time Off to Recharge, Financial Well-being, Life & Family Support, Volunteer and Community Initiatives, Learning & Development, Exclusive Perks
Skills
- This is your chance to shape legendary play that lasts a lifetime.
- The problems are still being defined, and the approaches are actively being invented.
- Our focus is on the intelligence layer:
- This is where canon knowledge meets language model behavior, and where the quality of every character interaction gets defined and measured.
Compensation
- $109,200 - $163,800 USD
- Employees may be eligible for annual and long-term incentives as part of their overall compensation package, depending on role, location, and eligibility. Benefits and programs may include:
- Additionally, employees may be eligible for annual and long-term incentives as part of their overall compensation package.
Benefits
- Health & Wellness
- Time Off to Recharge
- Learning & Development
- Exclusive Perks
This listing is sourced directly from Hasbro's careers page and normalized into a canonical job model.