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You will get a SaaS API or webhook workflow diagnosed, fixed, or stabilized
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Project details
When one backend workflow breaks, the visible symptom may be a missed payment, duplicated record, failed sync, or stuck job. The real cost is engineers debugging symptoms without knowing where the flow fails.
I will trace one bounded SaaS backend workflow: an API integration, webhook, payment flow, authentication path, background job, or data pipeline. Depending on the tier, I will diagnose it, implement the fix, or harden the workflow for production.
Deliverables can include:
• Root-cause map and acceptance criteria
• Production-ready code
• Validation, retries, error handling, and useful logging
• Focused tests
• Deployment or handoff notes
Relevant work includes NestJS/PostgreSQL/AWS data pipelines, healthcare booking and patient-sync recovery, multi-tenant SaaS systems, and fintech webhook infrastructure designed for 10M+ requests per day.
This is one workflow not a vague promise to repair an entire application. Full rewrites, frontend redesigns, mass migrations, and unrelated bugs are excluded unless agreed separately.
Unsure which tier fits? Message me on Upwork with your stack and failing workflow. I will recommend the smallest safe starting point.
I will trace one bounded SaaS backend workflow: an API integration, webhook, payment flow, authentication path, background job, or data pipeline. Depending on the tier, I will diagnose it, implement the fix, or harden the workflow for production.
Deliverables can include:
• Root-cause map and acceptance criteria
• Production-ready code
• Validation, retries, error handling, and useful logging
• Focused tests
• Deployment or handoff notes
Relevant work includes NestJS/PostgreSQL/AWS data pipelines, healthcare booking and patient-sync recovery, multi-tenant SaaS systems, and fintech webhook infrastructure designed for 10M+ requests per day.
This is one workflow not a vague promise to repair an entire application. Full rewrites, frontend redesigns, mass migrations, and unrelated bugs are excluded unless agreed separately.
Unsure which tier fits? Message me on Upwork with your stack and failing workflow. I will recommend the smallest safe starting point.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$250
|
Standard
$650
|
Advanced
$1,250
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 8 days |
Number of Revisions | 1 | 1 | 2 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - |
Optional add-ons
You can add these on the next page.
Additional Revision
+$100
Extra related API endpoint or webhook handler:
(+ 2 Days)
+$250
Production deployment support
(+ 1 Day)
+$150Frequently asked questions
5 reviews
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OS
Oran S.
Mar 26, 2026
Hello
I hired Syed Ali to help build me a real estate platform to connect agents together and put more deals together within our brokerage. Ali did an incredible job completing my project, he worked hard and fast to get everything done within the short time frame I had. The quality of the work was great as well, anytime I had an edit or fix I wanted he was able to get it done perfectly. I highly recommend working with Ali for any MvP, SaaS, etc needs. I will not be looking elsewhere for future projects as I believe I have found one of the best. Thank you again for all the hard work, I could not be happier with the outcome. You can tell he has been doing this effectively for years and has extensive knowledge of this field.
SK
Sanjay K.
Jan 29, 2026
CRM Multi-Tenant Technical Architect
Very professional and out of tye box thinking man of his words no bs
SS
Stan S.
Jan 7, 2026
Code Checker Tool
Ali demonstrated a high level of professionalism and technical expertise throughout the engagement. His full-stack development skills, attention to detail, and adherence to best practices made him a valuable contributor to our project. The work was delivered on time and met all requirements.
AC
Adam C.
Aug 7, 2025
Dev Work to Test Trip App
This was a short engagement focused on getting some backend routes wired up for a travel app MVP. Ali helped get a few key pieces in place during the early setup phase. Due to timing and shifting priorities, we kept this work limited — but in another context, we might have continued with a longer collaboration. Wishing him the best on future projects.
JZ
Jing Z.
Jan 11, 2024
I need a blog writer who is familiar with climatic chamber
The articles required above can basically be completed. But he didn’t finish the November article. After that I contacted him but there was no reply.
About Syed Ali
NetSuite Developer | SuiteScript, Celigo & eCommerce Integrations
100%
Job Success
Karachi, Pakistan - 3:48 am local time
My technical focus includes:
• SuiteScript 2.1 RESTlets, Map/Reduce, Scheduled, and User Event scripts
• SuiteTalk REST, OAuth 2.0, token-based authentication, and SuiteQL
• Celigo flow mapping, troubleshooting, retries, and error recovery
• NetSuite integrations with Shopify, BigCommerce, and custom APIs
• SuiteScript 1.0/2.0 to 2.1 upgrades with focused tests
• Idempotency, validation, structured logging, and failed-record replay
I approach ERP integrations as distributed systems not just field mappings. My broader backend experience includes production fintech and healthcare platforms, webhook infrastructure designed for more than 10 million requests per day, AWS data pipelines, PostgreSQL systems, and multi-tenant SaaS applications.
That experience helps me diagnose the difficult failures that happen between NetSuite, eCommerce platforms, middleware, and external APIs.
If you have a failing SuiteScript, RESTlet, Celigo flow, order sync, inventory update, or SuiteTalk integration, send me the expected behavior, current error, and affected systems. I will help isolate the smallest safe fix.
Steps for completing your project
After purchasing the project, send requirements so Syed Ali can start the project.
Delivery time starts when Syed Ali receives requirements from you.
Syed Ali works on your project following the steps below.
Revisions may occur after the delivery date.
Reproduce and map the workflow
I review the relevant code, logs, payloads, and expected outcome, reproduce the problem where possible, and confirm the workflow boundary.
Diagnose, fix, or stabilize
For Starter, I prepare the root-cause analysis and repair plan. For Standard or Advanced, I implement the agreed code changes and focused tests.