Top 12 Postgresql Jobs in Ventura, Ca

Senior Backend Engineer – SQL, Security, Payments & Platform Architecture
NENN —Santa Rosa Valley, CA
- $150,000 - $200,000 a year
- Full-time
- Azure
- 5 years
- DevOps
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Senior Backend Engineer – SQL, Security, Payments & Platform Architecture

NENN
Santa Rosa Valley, CA

Quick Apply

Job Details

Full-time
$150,000 - $200,000 a year

Qualifications

Systems integration
Azure
React
DevOps
Data retrieval time improvement
System design
Integration Architecture Design (Architecture design skills)
Database security hardening
Public Cloud
Scalable systems
Schema design
Credit card payment processing
SQL
AWS
Application design
Scalability
Developing and maintaining backend systems
Integration with Third-Party Services (system development)
Query management
Providing code feedback

Full Job Description

Role Overview

NENN is seeking a Senior Backend Engineer to lead the stabilization, security hardening, and production readiness of an AI-assisted MVP PIMS platform. This system is being actively built with AI-generated components and requires an experienced engineer who can identify hidden risks in code, database design, and integrations, then systematically transform it into a secure, scalable, and reliable production platform. A core requirement of this role is advanced SQL expertise, including the ability to review and correct AI-generated database structures and queries. In addition, this role will own security architecture, data governance, and Stripe payment integration. The goal is to prepare the platform for public demonstration and trade show readiness by December.

Core Responsibilities

Architecture Ownership & System Stabilization

Audit current MVP architecture (backend, database, APIs, hosting)
Identify structural weaknesses introduced by AI-generated code
Define a scalable backend architecture (services, data flows, boundaries)
Reduce technical debt and enforce maintainable patterns
Establish environment strategy (dev / staging / production)

SQL & Data Layer Ownership (Required Core Skill)

Design and normalize relational database schemas (PostgreSQL or equivalent)
Review and correct AI-generated SQL code and schema design
Optimize queries, indexing strategies, and execution plans
Identify data integrity issues (duplication, inconsistency, race conditions)
Implement audit trails and data lineage where needed
Establish backup, restore, and disaster recovery processes

Security & Risk Mitigation (Critical)

Perform full application security assessment (OWASP-aligned)
Identify vulnerabilities in:
Authentication & session management
API endpoints
Database access patterns
Third-party integrations
Implement:
Role-based access control (RBAC)
Encryption at rest and in transit
Secure secrets management
Define logging, monitoring, and breach detection strategies
Ensure data privacy and compliance readiness (as applicable)

Payments & Stripe Integration (Required)

Architect and implement secure Stripe integration for:
Subscriptions (if applicable)
One-time payments
Invoicing and billing workflows
Ensure PCI-safe design (no sensitive card data stored)
Handle webhook validation and idempotency correctly
Design payment state tracking in the database
Prevent double-charging, race conditions, and webhook spoofing
Build reconciliation and payment audit mechanisms

API & Integration Layer

Build and maintain RESTful APIs (or equivalent architecture)
Evaluate third-party APIs for reliability and failure modes
Implement robust error handling and retry logic
Ensure system resilience under partial outages

AI- Generated Code Governance (Key Requirement)

Review AI-generated backend and SQL code for correctness and safety
Identify hallucinated logic patterns, unsafe queries, or broken assumptions
Refactor AI-generated code into production-grade standards
Establish coding standards for future AI-assisted development

Required Qualifications

5+ years backend engineering experience
Expert-level SQL (mandatory)
Strong experience with PostgreSQL/MySQL or equivalent
Proven ability to review and repair AI-generated codebases
Deep understanding of backend security principles
Experience with Stripe or equivalent payment systems
Strong API design and integration experience
Experience with system architecture and scaling applications
Familiarity with cloud infrastructure (AWS, GCP, or Azure)

Preferred Qualifications

Experience with AI-assisted development environments
Experience in SaaS or operational logistics platforms
React familiarity (not required)
Experience in healthcare, veterinary, logistics, emergency response, or field operations systems
DevOps / CI/CD experience.

Pay: $150,000.00 - $200,000.00 per year

Work Location: In person

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Senior Backend Engineer – SQL, Security, Payments & Platform Architecture

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