AI Training and Prompt Engineering Specialist

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Yo Mobile Games & Computer Services

WebsiteLinkedInAll Job Openings

1 - 10 employees

🎮 Gaming

Gaming • Software

Yo Mobile Games & Computer Services is a company that specializes in both mobile game development and computer services. They offer mobile game and business development services for iOS and Android devices, featuring various apps like So Tricky, So Tricky Flappy Head, T-Shirt Toss, and Hippity Hop, available on the Apple App Store and Google Play Store. Additionally, the company provides PC maintenance, spyware, malware, and virus removal services for small to large businesses. Yo Mobile also offers surveillance system services, emphasizing their comprehensive approach to addressing both gaming and computer service needs.

📋 Description

• Own YOlanda’s system prompt, including persona, tone, safety rules, refusal behavior, and prompts for user actions • Define what falls within YOlanda’s domain and what is handed off to YOnC • Make handoffs seamless within the same conversation and voice • Build the few-shot library and manage context • Build evaluation sets with test cases, pass conditions, and trackable scores across releases • Rank and critique outputs using RLHF • Rewrite weak answers into reference and fine-tuning data • Fact-check plan prices, balances, and YOYO$ calculations, targeting zero hallucinations on money-related information • Red-team adversarial prompts, prompt injection, jailbreaks, and abuse of top-up and rewards flows • Write Python to run and score evaluations at volume • Work with APIs, including streaming, function calling, and structured output • Keep prompts versioned in Git • Open pull requests against the LangChain and LangGraph build alongside the two engineers who own it • Work in the model every day without managing others

🎯 Requirements

• 2+ years building with large language models in production • Python proficiency for scripts, API clients, data handling, and tests • Experience with LangChain and LangGraph; ability to read and modify an existing graph without breaking it • Production retrieval experience, including chunking, embeddings, reranking, and grounding • Exceptional written English • Bilingual Spanish and English to the same standard • Methodical experimentation: change one variable, test it, record it, and move on • Nice to have: fine-tuning (SFT, DPO, LoRA) • Nice to have: evaluation frameworks (promptfoo, Braintrust, LangSmith, DeepEval) • Nice to have: mobile, telecoms, or fintech experience • Nice to have: editorial or linguistics training

🏖️ Benefits

• Flexible working hours • Corporate equipment for work • Competitive salary • Real opportunity for personal and professional growth