Full Stack Engineer — AI Products

KAISHI PARTNERS PTE. LTD.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

KAISHI PARTNERS PTE. LTD. is an early-stage startup in Singapore building a personal shopping agent that personalizes experiences and converts insights into actions. You will work across TypeScript and Python to ship end-to-end experiences that connect conversations, user context, recommendations, and actions.

You will combine full-stack engineering with product judgment, helping decide how the experience should work, shipping it, and iterating based on real use in a hands-on environment.

Qualifications

• Shipping and maintaining complete products across frontend and backend.
• Proficiency in TypeScript and Python.
• Experience with APIs, databases, and external service integrations.
• Ability to turn ambiguous ideas into working products and make trade-offs.
• Hands-on across the full stack.

Responsibilities

• Build end-to-end product journeys across frontend interfaces, backend services, and data.
• Create experiences that explain recommendations and track agent actions.
• Develop APIs, SDKs, and internal interfaces for agent workflows.
• Integrate external services and browser-based workflows with error handling.
• Collaborate with infrastructure and research to add memory and personalization.
• Investigate user problems and iterate on usability, performance, and reliability.

Skills

TypeScript

Python

Frontend & Backend

Product judgment

System thinking

Tools

APIs

Databases

External service integrations

Job description

About the company

Our client is an early-stage, venture-backed AI startup building a personal shopping agent that understands users’ preferences, helps them discover relevant products, and supports them in taking action. The team brings together AI agents, personalisation, and commerce to build a service that becomes more useful through ongoing interactions and real customer outcomes.

They are hiring in Singapore, with an opportunity for early team members to shape the product and its technical foundations.

The opportunity

You will turn AI capabilities into a consumer product people can use in everyday life. Working across TypeScript and Python, you will build complete experiences that connect conversations, user context, recommendations, and actions.

The role combines full-stack engineering with product judgment. You will help decide how the experience should work, ship it, and improve it based on real use.

What you’ll do

• Build end-to-end product journeys across frontend interfaces, backend services, and data.
• Create experiences that help users understand recommendations, give permissions, and follow the progress of agent actions.
• Develop APIs, SDKs, and internal interfaces for creating, running, and inspecting agent workflows.
• Integrate external services and browser-based workflows, with clear feedback and recovery when actions fail.
• Work with infrastructure engineers and researchers to bring memory, personalisation, and agent capabilities into the product.
• Investigate user-facing problems and iterate on usability, performance, and reliability.

What you’ll bring

• Experience shipping and maintaining complete products across frontend and backend.
• Strong TypeScript skills and proficiency in Python.
• Practical experience with APIs, databases, and external service integrations.
• Good product judgment and attention to how interfaces behave when systems are slow, uncertain, or unsuccessful.
• The ability to turn an ambiguous idea into a working product and make clear technical trade-offs.
• A hands-on approach and willingness to work across the stack.

Useful additional experience

• Consumer products, e-commerce, or personalised experiences.
• AI agents, conversational interfaces, or model integrations.
• Browser automation and permission-sensitive workflows.