SaaS & Backend · 2023 – 2026

Field Sales & CRM SaaS Platform

Multi-tenant SaaS platform giving field sales teams order, invoicing, customer and CRM management. I am the primary backend engineer and built most of the product across 1,000+ commits.

Highlights

Rate-limit-aware Paraşüt client with token caching and exponential backoff on HTTP 429.
Idempotent order export to Mikro ERP guarded by distributed locking, eliminating duplicate records.
Configurable hosted services for e-invoice status sync, tag-rule processing and lead synchronization.
CRM dashboards with campaign hierarchies, brand/platform breakdowns, lead-ad reports and registration-date conversion analysis.
Sped up reporting by caching statistics reads and improving indexes; moved push notifications to a background queue.
Authored the migration roadmap from instance-per-tenant to a single deployment with domain-based tenant resolution.

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