AI Prompt Engineer Jobs in India (Remote, Full-Time) — Rex.zone

Design, test, and optimize prompts and evaluation workflows that improve LLM performance in real production pipelines. You will collaborate with engineers and researchers to build prompt libraries, run A/B tests, define rubrics, and improve reliability, groundedness, and safety across assistants, copilots, agents, and RAG systems.

Key Responsibilities

- Own prompt lifecycle management: writing, debugging, versioning, and prompt library maintenance

- Design prompt evaluation plans using rubrics for accuracy, completeness, instruction following, tone, and policy compliance

- Create RLHF-style preference/ranking data with clear rationales to support instruction tuning workflows

- Translate product requirements into system prompts, developer prompts, and user prompt patterns

- Improve grounding and reduce hallucinations using RAG strategies and citation/traceability constraints

- Create annotation guidelines and support QA evaluation (edge cases, escalation paths, consistency checks)

- Monitor quality metrics (pass rate, inter-annotator agreement, regression failures) across releases

- Support safety alignment: red-teaming prompts, jailbreak resistance, and sensitive data leakage prevention





Required Qualifications

- 3+ years in software engineering, ML/NLP workflows, or applied LLM prompt engineering

- Robust structured writing for precise instructions and multi-step constraints

- Experience with LLM evaluation: rubrics, pairwise ranking, golden sets, adversarial testing

- Familiarity with RLHF concepts and human feedback loops

- Working knowledge of Python and experimentation tooling (notebooks, scripts, JSON, APIs)

Preferred Qualifications

- Experience with RAG pipelines, vector search, embeddings evaluation, and grounded answer validation

- Knowledge of content safety labeling, policy taxonomy, and prompt-based guardrails

- Experience with LLM observability/eval tooling (regression suites, eval harnesses)

Compensation

Competitive hourly rate

$30–$50/hr

FAQs

- What does an AI prompt engineer do? They design and optimize prompts, build templates/system instructions, run evaluations and A/B tests, and create feedback data to improve reliability and safety.

- Is this role remote? Yes, this posting is marked Remote and designed for distributed collaboration while targeting candidates based in India.

📌 AI Prompt Engineer (India)
🏢 Rex.zone
📍 India