Argentina onlyFuse Finance is building an AI-native Loan Origination System (LOS) and is looking for a Full-Stack Software Engineer to join their engineering team. The engineer will design, build, and ship features across the lending platform, leveraging AI tools as a core part of their daily workflow.
Requirements
- 3+ years of professional experience as a software engineer, ideally in a full-stack role.
- Strong proficiency with a modern backend stack and experience designing and consuming REST/GraphQL APIs.
- Solid frontend experience with React and modern state management; able to ship polished, responsive UIs.
- Comfortable working with relational databases, writing non-trivial queries, and thinking about data modeling for transactional systems.
- Experience deploying services to the cloud and with a working understanding of CI/CD, observability, and basic operational practices.
- Hands-on experience integrating LLMs into production systems.
- Experience with at least one of: retrieval-augmented generation (RAG), agentic workflows, MCP servers/clients, vector search, or LLM observability.
Benefits
- Competitive compensation
- Full AI tooling stack covered
- Remote-first culture with strong autonomy
- Real impact on the financial infrastructure used by credit unions and lenders across the U.S.
