Founding Full-stack Tech Lead (AI Fintech)
Location
Seoul, South Korea (On-site)
About the Company
A leading AI-driven wealth management fintech company in Korea is entering a critical growth phase as it prepares for global expansion beyond its current domestic market.
The company is evolving toward a next-generation AI-powered investment platform focused on U.S. equities and ETFs, leveraging proprietary investment algorithms, data infrastructure, and automation capabilities. The organization is currently rebuilding its technology foundation to support scalable global growth.
The Opportunity
We are looking for ahands-on Founding Full-stack Tech Leadwho has successfully built and launched products from0→1and enjoys solving problems across the entire technology stack.
This role is ideal for someone who can work directly with the Founder, make architectural decisions, write production code, leverage modern AI development tools, and help establish the foundation for a future engineering organization.
This is primarily a builder role, not a pure people-management position.
Key Responsibilities
Full-stack Product Development
Design, develop, and launch new products and features end-to-end
Own frontend, backend, infrastructure, and deployment decisions
Drive rapid product iteration and experimentation
Build scalable architecture for future global expansion
Platform & Architecture
Evaluate and modernize existing systems where necessary
Design scalable backend architecture and APIs
Improve platform reliability, performance, and security
Establish engineering best practices and technical standards
AI & Automation
Integrate AI capabilities into customer-facing products
Utilize LLM technologies and AI APIs to enhance user experience
Explore AI-driven productivity and automation opportunities
Leverage modern AI development workflows and tools
Cloud & DevOps
Manage cloud infrastructure and deployment pipelines
Maintain CI/CD environments and engineering automation
Optimize system observability, monitoring, and operational efficiency
Technology Leadership
Serve as the technical partner to the Founder
Contribute to product strategy and roadmap discussions
Help define future engineering hiring requirements and team structure
Establish a culture of speed, ownership, and execution
Required Experience
5+ years of software engineering experience
Experience building and shipping products from0→1or scaling products from1→10
Strong hands-on full-stack engineering capability
Proven ability to work independently with high ownership
Startup, SaaS, Fintech, AI, or consumer product experience preferred
Strong product mindset and business-oriented thinking
Technical Requirements
Strong experience in several of the following technologies:
Frontend & Mobile
React
Next.js
Flutter
React Native
TypeScript
Backend
Node.js
NestJS
Go
Python
REST API / Microservices
Infrastructure
AWS
GCP
Docker
Kubernetes
Terraform
DevOps
CI/CD
GitHub Actions
Monitoring & Observability
AI & Emerging Technologies
OpenAI API
Claude API
MCP
AI Agents
Cursor
Claude Code
LLM-based Product Development
Ideal Candidate
Has personally built and launched a service or product from scratch
Comfortable working across frontend, backend, cloud, and deployment
Thrives in fast-paced startup environments
Believes in shipping fast, learning fast, and iterating quickly
Excited about AI-native software development
Wants to play a key role in building a category-defining fintech company
Why Join?
Direct exposure to Founder and executive decision-making
Significant ownership and influence over product and technology direction
Opportunity to build the technical foundation of a global AI fintech platform
Work with modern AI development tools and cutting-edge technologies
Potential pathway toward future Engineering Leadership as the organization scales
Contact
Jason Lee - Associate Director | JAC Recruitment Korea
📧 jason.lee@jac-recruitment.com
📞 +82-2-2183-0514