Full Stack Engineer

D24 Search Limited; United States; Remote; USD 207,000 - 253,000; Full time

Job summary

D24 Search is seeking a Full Stack Engineer for an AI-native SaaS startup that powers A/R for distributors. Remote options are available in the US and Canada, with compensation up to $230K plus equity.

You will own end-to-end systems, work with Ruby on Rails, React.js, PostgreSQL, AWS, and Terraform, and contribute to real-time data processing in a small, high-skill team.

Qualifications

• Startup environment with fast iteration and <100 people.
• Shipped end-to-end production features.
• Backend in MVC framework (Rails/Django/Spring).
• 5+ years backend-leaning full-stack experience.
• Advanced SQL/PostgreSQL experience.
• Proficient with AI tooling in daily workflows.
• Available for quarterly off-sites in Austin.

Responsibilities

• Own high-volume payment processing systems and secure APIs.
• Deep ERP integrations (NetSuite, Sage, Acumatica, etc.).
• LLM-powered workflows: credit decisions, remittance matching, automated comms, dispute resolution
• Real-time data pipelines handling millions of financial records
• A/R and collections automation that impacts cash flow
• Eval suites, observability, and guardrails for AI in production

Skills

Full-stack development

MVC frameworks

PostgreSQL

SQL databases

AI tooling

Remote collaboration

Tools

Ruby on Rails

React.js

AWS

Terraform

PostgreSQL

Job description

Full Stack Engineer

Remote (US/ CANADA)

Up to $230K + Equity

US Citizens/ Green Card

Tech stack: Ruby on Rails, PostgreSQL, React.js, AWS, Terraform

My client is a AI driven SaaS Start up and is the AI-native A/R operating system built for B2B distributors.

Trade credit runs on relationships — but collecting on it has always run on spreadsheets, sticky notes, and phone calls that go nowhere. We replace that entire stack with an intelligent, always-on system that thinks, acts, and learns across every step of the A/R lifecycle.

From the moment a new customer applies — on their phone, in minutes — Our agents are already working: pulling bank references, chasing

Join and help rebuild payments for the $1T+ distribution industry. You'll architect and build the systems that process millions of dollars in transactions daily, integrate with complex ERP systems, and leverage cutting-edge LLM technology to transform how distributors manage their revenue cycles.

This is a hands-on engineering role. You'll own product end-to-end — from customer signal through spec, ship, and measurement. We're an AI-native team where Cursor, Claude Code, and agentic workflows are part of the daily flow, not optional. We invest more in clarity (specs, decompositions, conventions) than in process around them. AI handles a growing share of the implementation; humans set the targets, make the calls, and own the outcomes.

You'll join a small team of A+ players where everyone is an individual contributor at the same level. We pair when stuck, review code thoroughly but kindly, and rise together. You'll work closely with our founder-led team — operators who previously ran a distribution business and understand the real-world problems we're solving.

What you'll own

• High-volume payment processing systems and secure financial APIs
• Deep integrations with major ERPs (NetSuite, Sage, Acumatica, etc.)
• LLM-powered workflows: credit decisions, remittance matching, automated comms, dispute resolution
• Real-time data pipelines handling millions of financial records
• A/R and collections automation that directly impacts customer cash flow
• Eval suites, observability, and guardrails that keep AI features safe in production

What we look for

• Ships full-stack. Frontend, backend, schema, tests — handoffs aren't the model.
• Treats specs as the product. Decomposition into clear, scoped, runnable work is the highest-leverage skill on this team.
• AI in the daily flow. You don't wait for permission to use Cursor or Claude Code — you already do, and you push back when conventions need updating.
• Talks to users. Not "reads tickets" — actually joins customer calls and reads support threads.
• Owns past launch. If the customer experience around your work is broken, that's still on you.

Requirements:

• Worked at a company with a high iteration speed on new products (startups < 100 people strongly preferred).
• Shipped production systems and user- facing features end- to- end within the last 1- 2 years.
• Backend expertise in an MVC framework (Ruby on Rails, Django, or Spring Boot).
• 5+ years of experience as a backend- leaning full- stack engineer.
• Advanced experience with SQL databases like PostgreSQL.
• Actively uses AI tooling in day- to- day workflows.
• Must be available for quarterly off- sites in Austin.