Prompt Engineer

Moonfire; Singapore; On-site; SGD 90,000 - 140,000; Full time

Benefits offered by this job

Competitive base salary

Attractive company benefits

Fun collaborative environment

Strong career progression

Job summary

Avensys in Singapore is hiring a Prompt Engineer to design and maintain structured prompts, templates, and output schemas aligned with product requirements. You will define outputs, constraints, and completion criteria, and document assumptions and edge cases.

You'll apply LLM best practices, test prompt behavior, build evaluation rubrics, and collaborate with UX/Product and engineering teams to deliver user-friendly AI experiences while ensuring governance, security, and safety standards.

Qualifications

• Strong written communication to produce clear, unambiguous instructions.
• Experience creating structured prompts, prompt templates, and output formats.
• Ability to translate business needs into actionable prompt requirements and documentation.
• Working knowledge of GPT/LLMs and how they respond to instructions and context.

Responsibilities

• Design and maintain structured prompts, templates, and output schemas aligned to product and stakeholder requirements.
• Define expected outputs, constraints, and completion criteria for deliverables; document assumptions, edge cases, and limitations.
• Apply LLM best practices (context management, instruction hierarchy, few-shot examples) to improve accuracy and consistency.
• Test and debug prompt behavior through iterative experimentation; analyze failures and reduce hallucinations and variability.
• Create evaluation approaches (test sets, rubrics, human review workflows) and track quality over time.
• Implement PromptOps practices: version control, change management, documentation, and release processes for prompt assets.
• Monitor production performance (quality, safety, latency, and cost) and optimize prompts for efficiency.
• Collaborate with UX/Product teams to design user-friendly AI interactions, workflows, and guardrails.
• Partner with engineering to integrate prompts into applications, including retrieval-augmented workflows where applicable.
• Ensure prompts and AI experiences align with governance, security, privacy, and safety standards.

Skills

Structured prompts

Prompt templates

Documentation

LLM instruction design

Prompt evaluation

Job description

Avensys is a reputed global IT professional services company headquartered in Singapore. Our service spectrum includes enterprise solution consulting, business intelligence, business process automation and managed services. Given our decade of success we have evolved to become one of the top trusted providers in Singapore and service a client base across banking and financial services, insurance, information technology, healthcare, retail, and supply chain.

We are currently looking to hire Prompt Engineer. This is an exciting opportunity to expand your skill set, achieve job satisfaction and work-life balance.

JOB RESPONSIBILITIES:

• Design and maintain structured prompts, templates, and output schemas aligned to product and stakeholder requirements.
• Define expected outputs, constraints, and completion criteria for deliverables; document assumptions, edge cases, and limitations.
• Apply LLM best practices (context management, instruction hierarchy, few-shot examples) to improve accuracy and consistency.
• Test and debug prompt behavior through iterative experimentation; analyze failures and reduce hallucinations and variability.
• Create evaluation approaches (test sets, rubrics, human review workflows) and track quality over time.
• Implement PromptOps practices: version control, change management, documentation, and release processes for prompt assets.
• Monitor production performance (quality, safety, latency, and cost) and optimize prompts for efficiency.
• Collaborate with UX/Product teams to design user-friendly AI interactions, workflows, and guardrails.
• Partner with engineering to integrate prompts into applications, including retrieval-augmented workflows where applicable.
• Ensure prompts and AI experiences align with governance, security, privacy, and safety standards.

Qualifications

Essential Qualifications

Communication & Writing (Core)

• Strong written communication skills with the ability to produce clear, unambiguous instructions.
• Experience creating structured prompts, prompt templates, and specifying output formats.
• Ability to translate business needs into actionable prompt requirements and documentation.

AI/LLM Knowledge (Core)

• Working knowledge of GPT/LLMs and how they respond to instructions and context.
• Understanding of hallucinations, bias, and common failure modes.
• Familiarity with prompting techniques (e.g., zero-shot/few-shot, chain-of-thought alternatives, tool/function calling concepts) and constraints.

Analytical Thinking (Core)

• Ability to test prompts systematically, interpret outputs, and identify root causes of failures.
• Comfort with iterative refinement, A/B-style comparisons, and accuracy/quality improvement.
• Ability to design simple evaluation criteria and measure improvements over time.

PromptOps & Governance (Core)

• Experience with prompt versioning, documentation, and change control.
• Understanding of monitoring needs for quality and safety in production.
• Awareness of cost optimization levers (token usage, response length constraints, prompt efficiency).

UX & Product Thinking (Core)

• Ability to design intuitive AI interactions that fit user workflows.
• Experience collaborating with product/UX to align AI behavior with user intent.
• Understanding of how to set expectations and provide helpful, safe responses.

WHAT'S ON OFFER

You will be remunerated with an excellent base salary and entitled to attractive company benefits. Additionally, you will get the opportunity to enjoy a fun and collaborative work environment, alongside a strong career progression.