Senior Full-Stack Engineer: AI-Driven Fintech (Remote)

AmeriSave Mortgage Corporation; United States; Remote; USD 150,000 - 180,000; Full time

Benefits offered by this job

Disability insurance

Employee discounts

Paid time off

12 paid holidays per year

Paid training

Referral bonuses

Job summary

AmeriSave Mortgage Corporation is seeking an experienced Senior Full‑Stack Developer to design, develop, and maintain scalable web applications using TypeScript, HTML, CSS, Java, and Node.js in a microservice environment. You will collaborate with cross‑functional teams to ship new features quickly and ensure data integrity with MS SQL.

The role emphasizes AI/GenAI integration, LLMs, and retrieval-augmented generation, with frameworks like LangChain and FastAPI.

Qualifications

• 5+ years of professional experience in full stack development.
• Proficient in HTML, CSS, and DOM manipulation.
• Strong experience with Node.js and Java.
• Expertise in TypeScript for frontend and backend.
• MS SQL: design, querying, optimization.
• Experience integrating AI APIs (OpenAI, Hugging Face, Mistral).
• Understanding of LLMs and prompt engineering.
• Ability to work remotely in CST timezone.
• Attention to detail in evolving requirements and stability of services.

Responsibilities

• Design, develop, and maintain robust and scalable web applications using TypeScript, HTML, CSS, Java, and Node.js in a microservice environment.
• Collaborate with cross-functional teams to define, design, and ship new features quickly.
• Write clean, maintainable, and efficient code in TypeScript and Java.
• Optimize applications for maximum speed and scalability.
• Troubleshoot and debug applications to ensure optimal performance.
• Implement data storage solutions using MS SQL and ensure data integrity.
• Participate in code reviews to maintain code quality and ensure best practices.
• Stay up-to-date with the latest industry trends and technologies to bring innovative solutions to the table.
• Work in the CST timezone to ensure seamless collaboration with the team.
• Design and develop user interfaces with HTML, CSS and/or generated by JSON.
• Perform DOM manipulation to create dynamic and interactive web pages.
• Build and deploy AI-powered applications using LLMs, GenAI agents, and retrieval-augmented generation (RAG) pipelines.
• Integrate AI services into full-stack solutions using frameworks like LangChain, FastAPI, or Azure OpenAI.
• Handle unstructured data (PDFs, HTML, audio, images) and multimodal models.
• Implement LLMOps practices including prompt versioning, caching, observability, and cost tracking.
• Collaborate with AI/ML engineers and data scientists to embed intelligent automation and decisioning into enterprise workflows.
• Contribute to the development of semantic search, vector databases (e.g., Pinecone, Supabase), and AI-enhanced user experiences.

Skills

TypeScript

Node.js

Java

HTML

CSS

DOM manipulation

MS SQL

AI APIs

LLMs

Azure

CI/CD

Docker

Redis

Micro frontends

AI observability

LangChain

FastAPI

Cursor

Pinecone

Supabase

Tools

LangChain

FastAPI

Azure OpenAI

Cursor

Docker

Pinecone

Supabase

Job description

AmeriSave Mortgage Corporation is seeking an experienced Senior Full‑Stack Developer to design, develop, and maintain scalable web applications using TypeScript, HTML, CSS, Java, and Node.js in a microservice environment. You will collaborate with cross‑functional teams to ship new features quickly and ensure data integrity with MS SQL.

The role emphasizes AI/GenAI integration, LLMs, and retrieval-augmented generation, with frameworks like LangChain and FastAPI.