[Remote] Senior AI Engineer (Full Stack)

Note: The job is a remote job and is open to candidates in USA. Blockchains, Inc. is focused on creating a digital future where individuals have control over their digital identities. As a Senior AI Engineer (Full Stack), you will bridge AI systems and user interactions by delivering AI-powered products and features, ensuring they are polished and production-ready while collaborating with product managers and designers.

Responsibilities

• Partnering with product managers, designers and external vendors to define how AI interactions should feel: response tone, citation style, error states, loading experiences, and streaming behavior
• Translating real-world usage patterns directly into prompt improvements, UX adjustments, and feature iterations, closing the loop between what users experience and what ships next
• Building AI POCs rapidly to test hypotheses with stakeholders before committing to full builds
• Building real-time AI interfaces in React, Next.js, and TypeScript: streaming responses, citation display, agent status indicators, and interactive document experiences
• Owning the full feature lifecycle from back-end API to browser, ensuring AI features are fast, accessible, and reliable under production load
• Integrating LLM APIs with streaming, prompt engineering, and error handling across the full stack
• Consuming and extending context augmentation pipelines: vector RAG, CAG, Text-to-SQL, MCP-based context engineering, built by the AI systems team
• Applying data privacy best practices at every layer: PII handling, GDPR/CCPA compliance, and encryption from the UI to the API
• Deploying AI features on AWS using Docker/Kubernetes, and GitLab CI/CD

Skills

• At least 2 years of experience delivering AI-powered product features
• Minimum of 5 years of full-stack software engineering experience
• Strong Python skills
• Working knowledge of LLM APIs, including prompt & context engineering, streaming integration, and handling edge cases in production
• Familiarity with context augmentation strategies, vector RAG, CAG, Text-to-SQL, and MCP-based context engineering
• Strong front-end skills in React, Next.js, and TypeScript
• Direct experience building streaming, real-time, or AI-driven user interfaces
• Practical understanding of data privacy (PII handling, GDPR/CCPA) and encryption applied across front-end and back-end layers
• Familiarity with AWS, Docker, Kubernetes, and GitLab
• Proven track record of building AI POCs and prototypes that ship to real users
• Ability to go from idea to working prototype quickly
• Strong product instincts and user-first mindset
• Ability to exercise strong judgment on when to build versus buy and how to scope an MVP versus a production system
• Experience mentoring junior engineers and helping them ship better AI product work
• Treat AI safety as a first-class concern, applying prompt injection awareness, output validation, access controls, and data leakage prevention
• Familiarity with Node.js or .NET
• Bachelor's degree in Computer Science, Engineering, or a related field
• Experience working directly with designers and product managers to define AI interaction patterns
• Exposure to agent orchestration frameworks such as LangChain, LlamaIndex, or LangGraph
• Exposure to local open-source models and fine-tuning concepts

Company Overview

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