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Fiverr Pro
English
$
USD
I will integrate your CRM erp or payment system with any third party API
Bilawal A
3.6
3.6
About this gig
Businesses lose money every day their systems don't talk to each other manual data entry, missed orders, disconnected customer records. I fix that.
I'm a Senior Integration Lead with 7+ years building production integrations for enterprise SaaS platforms in the .NET/C# ecosystem. I've connected CRMs, ERPs, payment gateways, and internal tools for companies that can't afford broken data pipelines.
What you get:
- Clean, documented, production-grade code (not a duct-taped script)
- Proper error handling and retry logic integrations that don't silently fail
- Data mapping between systems with different schemas
- Security best practices (OAuth2, API key rotation, encrypted secrets)
I only take on integration work I can guarantee is stable. If your stack is unusual, message me before ordering I'll tell you honestly whether I'm the right fit.
Get to know Bilawal A
Bilawal A
From NET to AI, I build smart, scalable solutions that deliver result
- FromPakistan
- Member sinceJan 2018
- Last delivery1 year
Languages
English, German
7+ years of experience in .NET, ASP.NET Core, C#, and modern web app development, delivering clean, scalable, and maintainable solutions. With 100+ positive reviews, I now specialize in adding AI features to existing systems using Microsoft Semantic Kernel and other AI tools. From chatbots and natural language search to workflow automation, I create future-ready applications that help businesses stay ahead.
My Portfolio
FAQ
Do you work with [specific platform]?
Message me your two systems and I'll confirm compatibility before you order.
What do you need from me to start?
API docs/credentials for both systems, and a plain-English description of what data should move where.
Can you maintain this long-term?
Yes, ongoing maintenance is available as a separate monthly retainer gig.
Reviews
30 reviews for this Gig
| (27) | ||
| (1) | ||
| (1) | ||
| (0) | ||
| (1) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T 
tinkukrishna139
India
He has good technical knowledge and delivered a functional product. However, the project took a bit longer to complete than expected.
$200-$400
Price
4 weeks
Duration
Helpful?F 
fatima_sayyar
Bahrain
Ongoing collaborationgreat as always
$50
Price
1 day
Duration
Helpful?A andrian_gm
United Kingdom
good guy and delivered in time
$100-$200
Price
4 days
Duration
Helpful?S 
simonedri
Israel
Ongoing collaborationThe seller needs supply the app but disappear he doesn’t answer me for a week living me with nothing after I pay him the first payment I don’t recommend work with him be ware
$200-$400
Price
4 weeks
Duration
Helpful?S simonedri
Israel
Ongoing collaborationvery nice a pro
$50-$100
Price
6 days
Duration
I Seller's Response
Helpful?
Reviews
30 reviews for this Gig
| (27) | ||
| (1) | ||
| (1) | ||
| (0) | ||
| (1) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
T tinkukrishna139
India
He has good technical knowledge and delivered a functional product. However, the project took a bit longer to complete than expected.
$200-$400
Price
4 weeks
Duration
Helpful?F fatima_sayyar
Bahrain
Ongoing collaborationgreat as always
$50
Price
1 day
Duration
Helpful?A andrian_gm
United Kingdom
good guy and delivered in time
$100-$200
Price
4 days
Duration
Helpful?S simonedri
Israel
Ongoing collaborationThe seller needs supply the app but disappear he doesn’t answer me for a week living me with nothing after I pay him the first payment I don’t recommend work with him be ware
$200-$400
Price
4 weeks
Duration
Helpful?S simonedri
Israel
Ongoing collaborationvery nice a pro
$50-$100
Price
6 days
Duration
I Seller's Response
Helpful?
