Debugging & Technical Problem Solving

Debugging & Technical Problem Solving

$ when something breaks, I find the root cause — not just the symptom.

I troubleshoot code, APIs, integrations, automation workflows, websites, and production systems to identify what's actually failing and implement a reliable fix.

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500+
Projects
97%
Job Success
Top 1%
Upwork
6+
Years

Something Isn't Working?

Not every technical problem can always be fixed — but most can be properly diagnosed. These are the kinds of symptoms I investigate every week.

API returns an unexpected error
Webhook stopped firing
Automation fails randomly
Data isn't syncing correctly
Website feature suddenly broke
Application throws errors
Third-party integration stopped working
Production deployment fails
Workflow produces incorrect results

What I Debug

Code & Applications
Python, JavaScript, TypeScript, PHP, Node.js, React and Next.js — investigating application logic, errors, unexpected behavior and broken functionality.
APIs & Integrations
REST APIs, third-party APIs, authentication, webhooks, data mapping, HTTP errors and unexpected API responses.
Automation Workflows
n8n, Make, Zapier and GoHighLevel — failed executions, incorrect conditions, broken data mapping, webhook problems and unreliable behavior.
Ecommerce & CMS
Shopify, WooCommerce and WordPress — custom feature issues, integrations, plugin/theme conflicts, API problems and unexpected behavior.
Production & Infrastructure
VPS, Docker, Nginx, deployment, server-side errors and performance issues in live environments.
Data & Synchronization
Database problems, data mismatches, failed synchronization, duplicate records, missing records and incorrect transformations.

I Don't Just Patch Errors. I Find the Root Cause.

A symptom and a root cause are rarely the same thing. Patching the symptom often means the same problem comes back — sometimes worse, sometimes somewhere else.

diagnostic-session.log (simulated)

How I Debug Technical Problems

01

Reproduce

Reproduce the problem consistently where possible — an intermittent bug and a consistent one need different approaches.

02

Inspect

Review code, requests, responses, logs, workflows and data rather than guessing.

03

Isolate

Determine which component or dependency is actually failing, not just where the error surfaced.

04

Identify the Root Cause

Separate the underlying cause from the visible symptom before deciding on a fix.

05

Fix

Implement the smallest reliable fix appropriate to the actual problem.

06

Test

Test normal behavior, edge cases and failure scenarios — not just the happy path.

07

Verify

Confirm the fix works in the real environment before considering it resolved.

Technical Problems I Can Investigate

Unexpected application errors
API failures
Authentication problems
Webhook failures
Data mapping errors
Broken integrations
Automation failures
Database issues
Performance bottlenecks
Deployment problems
Production bugs
Third-party service changes
Incorrect business logic
Synchronization problems
Legacy code problems

I investigate and diagnose each of these, and implement a fix where one is possible — not every problem has a guaranteed resolution, but every problem can be properly understood.

API & Integration Troubleshooting

API problems can come from authentication, permissions, incorrect endpoints, request formatting, response changes, rate limits, missing fields, unexpected data, webhook behavior, or a third-party service changing how it behaves. Debugging these requires inspecting the actual request and response — not guessing based on the error message alone.

What is software debugging? Software debugging is the process of finding the cause of unexpected software behavior, correcting the underlying problem, and testing the system to verify that the fix works — not simply making an error message disappear.

Automation Workflow Debugging

Automation failures across n8n, Make, Zapier and GoHighLevel usually trace back to a handful of causes: failed executions, wrong branches, missing data, duplicate actions, incorrect field mapping, API errors, timing issues, or webhook problems. I trace the actual execution data through the workflow — webhooks, APIs, CRMs and databases included — to find exactly where it breaks. See n8n automation, CRM automation, and GoHighLevel automation for the build side of this work.

Already Have an Application? I Can Work With What You Have.

I don't automatically recommend rebuilding software. When appropriate, I work with an existing codebase, understand the current architecture, reproduce the problem, identify the cause, and make a targeted fix. For work that goes beyond fixing what exists, see software engineering services.

Examples of Technical Problems I've Solved

Real projects with real investigation work, not hypothetical scenarios. Full detail on each is on the case studies page.

iCal SyncAPI Data Gap
Multi-Platform Booking & Revenue Automation System
Problem

Some bookings showed incorrect $0 revenue figures.

Investigation

Compared raw API responses against the platform's own CSV export to determine whether the issue was upstream or in the integration.

Technical Solution

Confirmed a genuine upstream data limitation and built the system to flag those bookings for manual review instead of silently showing wrong figures.

Read Case Study →
No-Code MigrationInfrastructure
Migrating Off a No-Code Platform: Base44 to Self-Hosted
Problem

An application built on a no-code AI platform needed to run independently.

Investigation

Audited every dependency the app relied on — data, content, AI features, file storage, server-side logic.

Technical Solution

Replicated the required functionality on self-hosted infrastructure with no ongoing platform dependency.

Read Case Study →
ShopifyCustom Feature
Shopify Store Configuration & Custom Feature Build
Problem

Back-in-stock alerts only worked per-product, not per-variant.

Investigation

Audited the store's app settings to confirm the limitation was structural, not a misconfiguration.

Technical Solution

Built a custom per-variant notification feature for the store's specific workflow.

Read Case Study →
WooCommerceManual Process
WooCommerce to Customer.io Integration
Problem

Customer and order data required manual CSV exports to reach Customer.io.

Investigation

Mapped what WooCommerce could expose via webhook versus what needed a scheduled pull.

Technical Solution

Built a direct, real-time integration between the two systems.

Read Case Study →
WhatsApp Business APIChatbot
Building a WhatsApp AI Chatbot with Automated Follow-Up
Problem

Conversations required a person to manually reply to every message.

Investigation

Identified where a fixed reply flow was sufficient versus where drop-off actually needed a follow-up trigger.

Technical Solution

Built the core conversation flow plus an automated re-engagement sequence for customers who stopped responding.

Read Case Study →

Technologies & Systems I Can Troubleshoot

The right debugging approach depends on the system and the failure, not simply the programming language.

Languages
PythonJavaScriptTypeScriptPHPBash
Frontend
ReactNext.js
Backend
Node.jsExpress
APIs
REST APIsWebhooksThird-Party APIs
Databases
MySQLPostgreSQLMongoDBSupabase
Automation
n8nMakeZapierGoHighLevel
Platforms
ShopifyWooCommerceWordPress
Infrastructure
DockerVPSNginx

Who Needs Debugging & Technical Problem Solving?

Businesses with a broken integration
Teams dealing with recurring application errors
Companies with unreliable automation
Ecommerce businesses with technical issues
Businesses using third-party APIs
Teams inheriting an existing codebase
Companies dealing with production problems
Agencies needing technical troubleshooting support
Businesses whose no-code workflow has become unreliable

Should You Fix the Existing System or Rebuild It?

Debug First When

  • The architecture is fundamentally sound
  • The issue is isolated
  • The system mostly works
  • The problem has a clear technical cause

Consider Rebuilding When

  • The architecture can't support the requirement
  • Technical debt makes changes unsafe
  • The existing system is fundamentally unsuitable
  • Maintaining it costs more than replacing it

When the answer points toward rebuilding rather than fixing, that work falls under software engineering instead.

Common Questions

What types of bugs can you fix?
Application errors, broken API integrations, failed webhooks, automation workflow failures, data synchronization problems, and production issues across web applications, ecommerce platforms and automation tools. The common thread is investigating why something is behaving incorrectly, not just what technology it's built in.
Can you debug existing code?
Yes. Most debugging work involves code I didn't originally write. I start by understanding the existing architecture and reproducing the problem before making any changes.
Can you troubleshoot API errors?
Yes. API problems usually come down to authentication, request formatting, response changes, rate limits, or an upstream service behaving differently than documented. I inspect the actual requests and responses to find out which one it is.
Can you fix webhook problems?
Yes. Webhook failures are often caused by authentication changes, payload structure changes, or an endpoint that stopped responding the way it used to. I trace the actual delivery and payload to identify the cause.
Can you debug Python and JavaScript applications?
Yes, along with TypeScript, PHP, React and Node.js applications. The debugging approach depends on the failure, not just the language.
Can you troubleshoot n8n or Make workflows?
Yes. Common causes are incorrect conditions, broken data mapping, upstream API changes, and timing issues between steps. I trace the actual execution data through the workflow to find where it breaks.
Can you fix Shopify or WordPress technical problems?
Yes — custom feature issues, plugin or theme conflicts, API problems, and unexpected behavior on both platforms.
Can you investigate a problem that cannot be reproduced consistently?
Intermittent problems are harder, but not impossible. I look at logs, timing, data conditions and environment differences to narrow down what's different when it fails versus when it works.
Do you work with existing applications and codebases?
Yes. Most of my debugging work is inside systems I didn't build, understanding the existing logic before changing anything.
What happens after you identify the root cause?
I implement the smallest reliable fix appropriate to the actual cause, test it against normal use and edge cases, and verify it holds up in the real environment before considering it resolved.

Have a Technical Problem You Can't Track Down?

Give me the symptoms, the system involved, and what you've already tried. I'll help identify what needs to be investigated and determine the most practical technical path forward.

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