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Fiverr Pro
English
$
USD
I will build custom rest API, webhook, and erp bridges
Syed Aqeel
About this gig
Stuck with a legacy ERP, failing webhooks, or two systems that refuse to talk to each other?
I am a Software Engineer with 3+ years of production experience building high-reliability API bridges, custom marketplace apps, and backend middleware. Using battle-tested internal boilerplates and automated testing pipelines, I deliver clean, secure integrations in 2448 hours5x faster than traditional dev cycles.
What I Build & Fix:
- Legacy-to-Modern Bridges: Connect SOAP/XML, on-prem SQL, or CSV systems (SAP, NetSuite, Odoo, QuickBooks) to modern REST/GraphQL APIs.
- Marketplace & CRM Sync: Custom private apps and bi-directional sync for Shopify, HubSpot, Salesforce, and Stripe.
- Bulletproof Webhooks: Event listeners with signature verification, rate-limit buffering, and zero dropped payloads.
- Idempotent Data Sync: Strict deduplication and database indexing so network timeouts never create duplicate records.
- Complex Authentication: OAuth2 auto-refresh, JWT, HMAC signatures, and custom token handshakes.
100% Documented Chat Workflow: Fast written communication with zero time wasted on unbilled calls. Message me your API docs today!
Get to know Syed Aqeel
Syed Aqeel
Full Stack Developer
- FromPakistan
- Member sinceNov 2024
- Avg. response time1 hour
Languages
Urdu, English, Hindi
Software Engineer with 3+ years of hands-on experience building production backend systems and SaaS architectures. Using battle-tested internal boilerplates and automated testing pipelines, I deliver clean, scalable code 5x faster than traditional freelancers—with proper database indexing, strict security, and zero bloat. I specialize in ERP/API bridges, Multi-Tenant SaaS, Stripe logic, and data scraping. I operate 100% via written chat for documented specs and 24–48hr delivery.
FAQ
How are you able to deliver custom API and ERP integrations in just 24–48 hours?
Over my 3+ years of focused backend engineering, I have built a library of battle-tested middleware boilerplates for authentication (OAuth2/JWT), webhook listeners, rate-limit queues, and retry logic. Instead of coding standard infrastructure from scratch, I deploy proven modules and focus 100% of m
Can we hop on a Zoom or phone call to discuss the project?
To guarantee 24–48 hour turnarounds and zero miscommunication, I operate 100% via written Fiverr chat. Written communication ensures every API endpoint, payload schema, and technical requirement is strictly documented and auditable in one place—saving us both hours of unbilled meeting time.
What if my legacy ERP or database doesn't have a modern REST API?
No problem. I regularly build bridges for older SOAP/XML endpoints, SFTP/CSV automated drops, direct SQL database views, and legacy webhook structures, transforming them into clean, modern JSON/REST pipelines.
How do you prevent duplicate records or lost data when one API goes down?
Every Standard and Premium integration includes idempotency keys (preventing duplicate entries) and exponential backoff retry queues. If a third-party server times out or hits a rate limit, the payload is safely queued and retried automatically without data loss.
Do you need access to our live production environment?
No. I always build and stress-test against sandbox/staging environments or mock payloads first. For deployment, I can either deploy via your CI/CD pipeline, provide a Dockerized container, or hand over clean, documented source code for your internal team to deploy.
