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Engineering Work

Selected examples of investigation, implementation, and technical decisions within an existing production platform.

3 case studies

Case study index

  1. 01
    Distributed Systems

    Payment & Order Processing

    Investigating a production issue in an asynchronous payment and order workflow.

    • Service Bus
    • ·
    • Async workflow
    • ·
    • Failure investigation
  2. 02
    Architecture

    Multi-Tenancy

    Introducing tenant isolation into an existing system without scattering conditionals across the codebase.

    • Tenant isolation
    • ·
    • Global query filtering
    • ·
    • Centralised tenant identification
  3. 03
    Performance

    Large-Scale Database Performance

    Investigating slow queries and application data-access patterns against an existing production dataset.

    • ≈45M orders
    • ·
    • ≈170M order lines
    • ·
    • Indexes & projections
Read the engineering notes

Building backend systems that have to keep working when things go wrong.

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© 2026 Harshil Gohel |
Based inGujarat, India |
Available worldwide