Senior Software Engineer AI Automation

ByzFunder LLC; United States; On-site; USD 140,000 - 190,000; Full time

Job summary

ByzFunder LLC is seeking a Senior Software Engineer to help build a greenfield AI-native lending platform. You will own features end-to-end, influence architecture, and work with product, operations, and risk teams.

You will integrate AI-assisted tooling, implement REST APIs, work with React/Next.js and Nest.js, and ensure scalable, secure systems that handle the lending lifecycle from origination to servicing.

Qualifications

• 7+ years of professional software engineering experience with strong full-stack capability.
• Production experience with React / Next.js and Node.js (Nest.js preferred).
• Strong experience with relational databases (e.g., SQL Server, PostgreSQL, MySQL, AWS RDS) and an ORM (Prisma preferred).
• Experience designing and building REST APIs.
• Experience working with asynchronous processing (queues, background jobs, or event-driven patterns).
• Experience deploying and operating applications in a cloud environment (AWS preferred).
• Solid understanding of application security fundamentals (authentication, authorization, secrets management, audit logging).
• Hands‑on experience using AI-assisted development tools (e.g., Cursor, Claude Code, GitHub Copilot) in day‑to‑day coding, including generating, refining, and validating code.
• Ability to independently take features from requirements to production.

Responsibilities

• Build and ship features across the MCA lending lifecycle — including application intake, document processing, underwriting, offer generation, funding workflows, and portfolio management.
• Contribute to the development of AI agent workflows that automate key business processes and integrate with internal APIs, databases, and data providers.
• Integrate LLM capabilities and MCP servers into ByzFunder's platform for structured access to data sources.
• Follow Spec-Driven Development (SDD) to translate specifications into production-ready code.
• Use AI-assisted development tools as a standard part of daily workflow to move faster while maintaining quality.
• Collaborate with product owners, operations, risk, and compliance to ensure solutions reflect real business needs.
• Participate in code reviews, uphold engineering standards, and foster a culture of quality and continuous improvement.

Skills

Full-stack development

React/Next.js

Node.js

REST APIs

Asynchronous processing

Cloud (AWS)

Security fundamentals

AI-assisted development tools

Production autonomy

Tools

Nest.js

Prisma ORM

AWS

SQL databases

SQS / Kafka

GitHub Copilot

OpenAI/Anthropic APIs

Job description

ByzFunder is at an inflection point. We're not upgrading legacy software — we're replacing it entirely with a purpose-built, AI-native lending platform designed to underwrite, fund, and service merchant cash advances faster and smarter than any system in the market today.

We're building a team of Senior Software Engineers to help us get there. You'll work alongside other engineers, product owners, and operations stakeholders to design, build, and ship the systems that power our lending lifecycle — from deal origination and underwriting through funding and portfolio management.

This is a collaborative, high-impact role on a greenfield platform. You'll contribute meaningfully to architecture discussions, own features end-to-end, and work in an environment that embraces AI-assisted development as a core part of how the team operates.

What You'll Build & Own

• Build and ship features across the MCA lending lifecycle — including application intake, document processing, underwriting, offer generation, funding workflows, and portfolio management.
• Contribute to the development of AI agent workflows that automate key business processes, working within an established team framework and collaborating on agent communication patterns, tool integrations, and human-in-the-loop checkpoints.
• Integrate LLM capabilities and MCP (Model Context Protocol) servers into ByzFunder's platform, giving agents structured access to internal APIs, databases, and third-party data providers.
• Work within a Spec-Driven Development (SDD) approach — taking well-defined specifications and translating them into reliable, tested, production-ready code.
• Use AI-assisted development tools (Cursor, Claude Code) as a standard part of your daily workflow — generating, refining, and validating code with AI assistance to move faster without sacrificing quality.
• Collaborate with product owners, operations, risk, and compliance stakeholders to understand requirements and deliver solutions that reflect real business needs.
• Participate in code reviews, contribute to team engineering standards, and support a culture of quality, learning, and continuous improvement.

Required Qualifications

• 7+ years of professional software engineering experience with strong full-stack capability.
• Production experience with React / Next.js and Node.js (Nest.js preferred).
• Strong experience with relational databases (e.g., SQL Server, PostgreSQL, MySQL, AWS RDS) and an ORM (Prisma preferred).
• Experience designing and building REST APIs.
• Experience working with asynchronous processing (queues, background jobs, or event-driven patterns).
• Experience deploying and operating applications in a cloud environment (AWS preferred).
• Solid understanding of application security fundamentals (authentication, authorization, secrets management, audit logging).
• Hands‑on experience using AI-assisted development tools (e.g., Cursor, Claude Code, GitHub Copilot) in day‑to‑day coding, including generating, refining, and validating code.
• Ability to independently take features from requirements to production.

Bonus Qualifications

• Experience integrating LLM APIs (OpenAI, Anthropic, etc.) into applications.
• Familiarity with prompt design, structured outputs, or retrieval‑augmented generation (RAG).
• Experience with message queues (SQS, Kafka, RabbitMQ) or workflow/orchestration systems.
• Experience in fintech, lending, or other regulated environments.
• Familiarity with vector databases (pgvector, Pinecone).

Why ByzFunder

Greenfield Architecture

No legacy baggage. The team is building on a modern, greenfield platform with real ownership over what gets shipped.

ByzFunder funds hundreds of deals monthly. What you build runs on live transactions immediately.

Work directly with founders and operations leaders who understand the business deeply and are committed to moving fast.

AI-assisted development isn't an experiment here — it's how the team works every day, and everyone is expected to embrace it.