Full-Stack Engineer (Backend-Focused)

Raydar; United States; Hybrid; USD 170,000 - 230,000; Full time

Benefits offered by this job

Competitive equity

Remote-friendly with on-site San Diego

Open to US-based candidates

Job summary

Raydar seeks a backend-focused Full-Stack Engineer to architect data models, APIs, and services for a finance/ERP platform. You’ll own greenfield work from design to deployment, expanding from inventory and supply-chain to financial reporting.

You’ll design invoicing and payment data models, build client APIs, and balance OLAP/OLTP. Hybrid role with US-wide candidates, ideally West Coast, and quarterly San Diego on-sites.

Qualifications

• 3–7 years of backend or full-stack experience with production systems.
• Experience with ERP, fintech, or accounting software domains is a plus.
• Strong data modeling and schema design skills for financial workflows.

Responsibilities

• Design data models for invoicing, payments, P&L reporting and finance workflows.
• Build client-facing APIs connecting platform to HR, payroll, and accounting systems.
• Architect Python/FastAPI backends with PostgreSQL; balance OLAP vs OLTP.
• Aggregate data from labor, subscriptions, and finance inputs for reporting.
• Own features end-to-end from design to deployment and iteration.
• Contribute to React frontend when needed while leading backend work.

Skills

Python

FastAPI

PostgreSQL

GraphQL

API design

Data modeling

Tools

Docker

CI/CD

React

WebSockets

Job description

Our client is a seed-stage enterprise software company building an AI-native ERP platform for defense manufacturing. Founded in 2025, the company has raised $12M and grown to a 15-person team tackling the operational and financial systems behind mission-critical hardware production. This is a ground-floor opportunity to build a clean-slate product in a sector seeing generational investment.

We are hiring a backend-focused Full-Stack Engineer to architect the data models, APIs, and services behind new finance and accounting modules. You will bring domain knowledge from ERP, fintech, or accounting software, own meaningful greenfield work from design through deployment, and help expand the platform from operational inventory and supply-chain management into a complete financial reporting system.

What you’ll do

• Design data models for invoicing, payments, P&L reporting, and other complex financial workflows
• Build client-facing APIs that connect the platform with HR, payroll, accounting, and other external systems
• Architect backend services in Python and FastAPI with PostgreSQL, choosing thoughtfully between OLAP and OLTP approaches
• Aggregate operational data with labor, subscription, and finance inputs to produce reliable reporting
• Own substantial features end-to-end, from technical design and schema decisions through deployment and iteration
• Contribute to the React frontend when needed while maintaining primary ownership of backend systems

What we’re looking for

• 3 to 7 years of backend or full-stack engineering experience building production systems, with 5+ years preferred
• Mastery of Python, FastAPI, PostgreSQL, and GraphQL
• Experience at an ERP, fintech, or accounting software company, including data modeling for invoicing, payments, or financial reporting
• Strong schema design skills and a practical command of OLAP versus OLTP trade-offs
• A track record of driving greenfield features from design to deployment, not only maintaining existing systems
• Fluency with accounting and finance concepts and the ability to collaborate directly with domain stakeholders

Bonus points

• Experience designing clean, client-facing APIs for integrations with HR, payroll, or accounting tools
• Familiarity with Docker, CI/CD, React, or WebSockets
• Experience working in defense technology or manufacturing software

Compensation and work model

• Base salary of $170K to $230K, with potential flexibility for exceptional candidates
• Competitive early-employee equity
• Full-time position
• Open to candidates based in the United States, with a preference for the West Coast
• Remote employees attend quarterly team on-sites in San Diego
• Candidates based in San Diego work in the office three days per week
• Visa sponsorship is not available; candidates must be US citizens or green card holders