Full Stack AI Engineer

Description

Summary: Join a fast-growing SaaS company as a Full Stack AI Engineer to accelerate AI feature delivery, contribute to agentic workflow architecture, and support a company-wide rebrand. Highlights: 1. Design and ship AI-powered features end-to-end with LLM integration emphasis 2. Contribute to refactoring legacy systems with AI readiness in mind 3. Opportunity to work on fast-forward projects using latest technologies We are seeking a **Full Stack AI Engineer** to join a fast\-growing SaaS company building AI\-native products. The role will accelerate AI feature delivery, contribute to agentic workflow architecture, and support a company\-wide rebrand implementation. **Responsibilities** * Design and ship AI\-powered features end\-to\-end, with emphasis on backend and LLM integration layers. * Build and maintain pipelines for AI agents, RAG workflows, and API integrations with LLM providers (OpenAI, Anthropic, etc.). * Contribute to refactoring and modernizing legacy systems with AI readiness in mind. * Collaborate with product, design, and research teams in a distributed environment. * Implement design updates as part of a rebranding initiative (typography, assets, UI components). **Must\-Have Skills** * 8\+ years in engineering, with proven SaaS/B2B experience. * Strong in TypeScript, Node.js, React, PostgreSQL. * Hands\-on experience integrating LLMs into production systems (prompt engineering, tool use, context management). * Familiarity with agentic frameworks (LangChain, LlamaIndex, or similar) or building custom agent pipelines. * Exposure to system design and scaling at enterprise level. * Ability to ship high\-quality features fast. * Experience with vector databases (pgvector, Pinecone, Weaviate) is a plus. * Experience migrating legacy systems or supporting multi\-region infra is a plus. **Soft Skills** * Agentic mindset: builds autonomous, outcome\-driven solutions — not just features. * Stays current with the fast\-moving AI tooling landscape; opinionated about what to use and why. * Excellent cross\-team communication in distributed environments. **What we offer:** * Competitive salary and bonuses * Flexible work hours * Remote job * Professional development opportunities * Vibrant workplace culture **Why working at Diffco?** * **Great experience and opportunity:** You will work on the fast\-forward projects in Silicon Valley utilizing the latest technologies, methodologies, frameworks and approaches with the ability and time to learn and develop professionally. * **Professional and harmonious team of friends:** Our team is a second family, so you would enjoy spending the day working on nice projects with kind people with broad interests. * **A vast field for growth:** Learn continuously, expand your skills and demonstrate your professional level and ability to take more responsibility to grow. * **Great company culture:** We care about you and are interested in your personal professional goals, motivation and we build a perfect work/life balance.