Nezri QA & Systems

Nezri QA & Systems

Testing complex systems E2E — ERP, CRM ,E-commerce & AI platforms

Israel
Freelancer
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ABOUT

I help companies ensure their systems actually work — not just in theory, but in real-world conditions.

With experience in QA, operations, and large-scale retail environments, I specialize in testing complex systems such as ERP platforms, e-commerce solutions, and AI-driven architectures.

My approach goes beyond traditional QA:
I focus on validating full business workflows, backend logic, APIs, and data integrity — identifying critical risks before they reach production.

I bring a unique combination of:
✔ Deep QA expertise
✔ Strong system and backend understanding
✔ Real operational experience managing large-scale business processes

This allows me to test systems from both a technical and business perspective — something most QA engineers lack.

Services include:
• End-to-end system testing
• ERP / CRM validation
• API & backend testing
• AI / agent-based systems testing
• QA strategy & consulting

If your system is complex — I help make sure it works reliably, scales properly, and doesn’t fail when it matters most.

LANGUAGES

English
Native or bilingual proficiency
Hebrew
Native or bilingual proficiency

SKILL DETAILS

Training

300 ₪ / hr
QA Training
Providing guidance, mentoring, and consulting in QA and system testing for teams and organizations.

I help companies:
✔ Build effective QA processes and testing strategies
✔ Improve testing coverage and reduce production bugs
✔ Train teams to think beyond basic testing and understand systems deeply
✔ Implement structured approaches for testing complex systems

With a strong background in both QA and real operational environments, I bring practical, business-focused insights — not just theory.

Ideal for teams that want to level up their QA maturity and prevent costly mistakes.

Technology

250 ₪ / hr
Quality Assurance, Software Testing & QA
QA & Systems Consultant with experience in testing complex systems, including ERP, SaaS platforms, and backend-driven applications.

My approach goes beyond traditional QA:
✔ End-to-end system testing (not just UI)
✔ Deep validation of backend logic, APIs, and data flows
✔ Testing complex business scenarios and real-world use cases
✔ Identifying critical production risks before they happen

Strong experience with:
✔ API & GraphQL testing
✔ Backend validation and data integrity
✔ Event-driven systems and async flows (queues, jobs)
✔ Complex integrations across multiple services

I don’t just test features — I ensure the system actually works under real conditions.
CRM & ERP
Extensive experience testing complex ERP and CRM systems, with deep understanding of real-world business processes.

I specialize in end-to-end validation of critical workflows such as:
✔ Purchase → Goods Receipt → Inventory → Sales
✔ Inventory management, FEFO, expiry handling
✔ Supplier, product, and order lifecycle flows
✔ Financial and operational data integrity

Coming from a background of managing large-scale retail and e-commerce operations, I bring a unique ability to test systems not just technically — but from a real business perspective.

I focus on preventing critical system failures that directly impact operations, revenue, and customer experience.
AI, Artificial Intelligence
I specialize in testing and validating AI-driven systems, including agent-based architectures, decision-making workflows, and automated processes.

My expertise includes:
✔ Validating AI agent behavior and execution flows
✔ Testing approval systems, orchestration logic, and fallback scenarios
✔ Identifying edge cases, failure states, and incorrect decision paths
✔ Ensuring reliability of AI outputs in real business environments

With hands-on experience building and working with AI-enabled ERP systems, I understand not just how AI should work — but how it impacts real operations.

If you're building AI features, I help make sure they behave correctly, safely, and consistently in production.

Software & Programming

250 ₪ / hr
DB - MSSQL, SQL Server
Strong experience working with SQL in the context of testing complex systems, including ERP, e-commerce, and backend-driven applications.

I use SQL as a core tool for validating data integrity, investigating issues, and supporting end-to-end testing processes.

My experience includes:
✔ Writing queries to validate business data across systems (orders, inventory, users, transactions)
✔ Verifying data consistency between frontend, backend, and database layers
✔ Analyzing complex datasets to identify anomalies, inconsistencies, and edge cases
✔ Supporting API and backend testing by validating database-level results
✔ Working with relational databases such as MSSQL and PostgreSQL

With a strong understanding of system architecture and data flows, I use SQL not just for queries — but as a tool to deeply understand how systems behave and where issues originate.

This allows me to identify problems faster, validate complex scenarios, and ensure data reliability in production environments.

COURSES & CERTIFICATIONS

QA & Automation Testing

John Bryce (ISTQB Certified Program)
  • Comprehensive training in software testing and quality assurance, covering both manual and technical testing methodologies.
  • The program included:
  • ✔ Test planning, test case design, and execution
  • ✔ System and end-to-end testing methodologies
  • ✔ API and backend testing fundamentals
  • ✔ Understanding of software development lifecycle (SDLC)
  • ✔ Bug tracking, reporting, and quality processes
  • In addition to formal training, most of my expertise was developed through extensive hands-on experience working with complex systems, including ERP platforms, e-commerce environments, and backend-driven applications.
  • This combination of structured training and real-world system experience allows me to approach QA from both a technical and business-critical perspective.

FullStack

john bryce
  • Fullstack development training with a strong focus on understanding how modern applications are built — both frontend and backend.
  • The program included:
  • ✔ Frontend development fundamentals (React, UI architecture)
  • ✔ Backend development and API design
  • ✔ Database structure and data modeling
  • ✔ Working with REST / GraphQL APIs
  • ✔ Application architecture and system design principles
  • This technical background significantly enhances my QA capabilities by allowing me to:
  • ✔ Understand how systems work internally — not just from the UI
  • ✔ Identify issues at the source (backend, logic, or data layer)
  • ✔ Test APIs, integrations, and complex flows more effectively
  • ✔ Communicate efficiently with developers and engineering teams
  • This combination of QA expertise and development knowledge enables me to approach testing from a deeper, system-level perspective.