Customer-Facing AI Engineer (Full-Stack & LLM)

HappyRobot; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job description

About HappyRobot

HappyRobot is the infrastructure for enterprises to build and orchestrate AI workforces. Our AI workers don't just communicate - they make decisions, take action, and run operations autonomously across voice, email, and enterprise systems. Born in Y Combinator (S23) and backed by a16z and Base10 with over $60M raised, we power critical operations for global enterprises worldwide.

Our platform is battle-tested in the most demanding environments - where AI has real consequences. We started in logistics, built our own voice stack, models, and orchestration layer from the ground up, and are now bringing that infrastructure to every enterprise that runs the real economy.

Role Overview

We are looking for a versatile and highly skilled Forward Deployed Engineer to join our team in Singapore. In this role, you will combine strong technical abilities with excellent communication skills, working directly with customers to ensure they maximize the value of HappyRobot’s AI platform. You will be involved in onboarding, implementation, and ongoing support, while also contributing to product development and innovation.

At HappyRobot, there’s no role seniority or hierarchy — we operate as a team of builders. We execute, we build, we own, and we care deeply about our customers and their success.

What You’ll Do

• Customer‑Facing Engineering – Work closely with customers from onboarding to ongoing usage, helping them integrate and optimize our AI solutions.
• Technical Development – Build new features, MVPs, and scalable solutions that directly impact customer outcomes.
• Full‑Stack Development – Utilize React, TypeScript, Node.js, and Python to develop robust applications and tools.
• AI/ML Applications – Design, implement, and iterate on AI/ML solutions, including LLM prompting, tuning of voices, and transcribers to optimize use cases.
• Integration & APIs – Manage APIs and integrations with third‑party systems to ensure seamless functionality for customers.
• Cross‑Functional Collaboration – Partner with Product, Engineering, and Customer Success teams to deliver tailored solutions.
• Iterative Problem‑Solving – Continuously iterate and improve AI solutions based on customer feedback and evolving requirements.
• Project Management – Prioritize and manage multiple projects under tight deadlines while maintaining high‑quality results.

Must Have

• Strong full‑stack experience: React, TypeScript, Node.js.
• Hands‑on proficiency in Python.
• Experience building AI/ML applications, including LLM prompting and tuning.
• Ability to manage APIs and integrate with third‑party systems.
• Excellent communication skills with the ability to explain technical concepts to non‑technical stakeholders.
• Proven ability to prioritize and manage multiple projects under tight deadlines.
• Founder mindset: highly independent, takes ownership, and thrives in a fast‑paced environment.

Why join us?

• Opportunity to work at a high‑growth AI startup, backed by top investors.
• Rapidly growing and backed by top investors including a16z, Y Combinator, and Base10.
• Ownership & Autonomy - Take full ownership of projects and ship fast.
• Top‑Tier Compensation - Competitive salary + equity in a high‑growth startup.
• Comprehensive Benefits - Healthcare, dental, vision coverage.
• Work With the Best - Join a world‑class team of engineers and builders