Shahariar Imtiaz FahimLead Software Engineer

Leadership Page

Leadership case studies across platform delivery, backend architecture, and production systems.

This page shows how I approach leadership through real projects: defining backend shape, choosing practical system boundaries, guiding delivery, and aligning technical decisions with product and operational needs.

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Operating Style

How I lead backend systems

Own architecture decisions in a way that helps delivery move faster, not just look cleaner on paper.

Keep service boundaries understandable so teams can extend systems without accidental coupling.

Choose data stores and asynchronous patterns based on workload behavior, concurrency, and operational risk.

Treat payments, monitoring, and workflow systems as reliability problems first, not only feature work.

Use code reviews, planning, and technical direction to reduce ambiguity and raise engineering quality across the team.

Coverage

These case studies cover products across monitoring, contest platforms, workflow software, commerce, healthcare, live systems, and monetized applications.

  • • Backend architecture across NestJS, FastAPI, ASP.NET Core, Laravel, and supporting platforms
  • • Workflow systems with queues, background jobs, concurrency, reporting, and cross-system coordination
  • • Content, commerce, payments, and real-time product behavior across customer-facing and internal tools
  • • Data-heavy applications using PostgreSQL, SQL Server, DynamoDB, MariaDB, MySQL, and Redis

Case Study

SiteBeacon

Monitoring and SEO platform

Stack: NestJS, Python, PostgreSQL, Redis

Led the backend architecture for a platform auditing performance, accessibility, SEO, and sustainability across thousands of URLs.

Leadership Lens

  • • Separated scanning and platform responsibilities so monitoring and audit services could evolve without tight coupling.
  • • Used PostgreSQL for core platform data and Redis-backed workers for asynchronous, queue-heavy scanning operations.
  • • Added real-time progress tracking and automated failure recovery for long-running distributed scans.

Delivery Outcome

Scaled audit capacity from hundreds to more than 5,000 URLs per scan with stronger operational visibility and recovery.

Case Study

Spellman

Enterprise content platform

Stack: ASP.NET Core 9, Sitefinity CMS 15, C#

Delivered enterprise website functionality with reusable CMS-driven components and scalable publishing workflows.

Leadership Lens

  • • Built custom modules, widgets, and workflows that extended Sitefinity beyond its out-of-the-box capabilities.
  • • Balanced CMS flexibility with maintainable backend behavior so business users could publish without creating technical fragility.
  • • Focused on performance and SEO improvements while keeping the content platform manageable for long-term growth.

Delivery Outcome

Supported enterprise publishing needs with a maintainable architecture that improved delivery speed and content operations.

Case Study

PMS

Retouching workflow management system

Stack: ASP.NET Core 8, SQL Server, Windows Forms, web portal

Modernized a legacy Excel-based performance management system into a Windows client, web portal, and shared Web API.

Leadership Lens

  • • Supported a mixed-client architecture with a C# .NET Windows app for operational users and a Next.js admin panel for management visibility.
  • • Structured ASP.NET Core Web API services to support 100+ concurrent active users in an always-on workflow environment.
  • • Designed the product around tracked work time so leaders could monitor retoucher output, deadlines, and task progress with clearer operational control.

Delivery Outcome

Connected daily execution, management reporting, and backend reliability in a system built for a continuously active production team.

Case Study

Retoucher Of the Year

Multi-country contest platform

Stack: Payload CMS, Next.js, PostgreSQL, Stripe

Built a contest platform where retouchers from multiple countries participate in photo editing competitions through a content-driven web experience.

Leadership Lens

  • • Used Payload CMS with PostgreSQL to keep competition content, country-specific updates, and administrative flows manageable from one system.
  • • Delivered the frontend in Next.js to support event storytelling, participation flows, and a more polished public-facing experience.
  • • Integrated Stripe so contest participation and payment-related flows could be handled inside the product journey rather than through manual operations.

Delivery Outcome

Created a scalable contest platform that combined content operations, participant onboarding, and payment flows for international reach.

Case Study

Point Of Sell

Commerce and fulfillment workflow

Stack: Laravel, PHP, MySQL, Python, WooCommerce integrations

Built backend capabilities for a web-based POS system with courier integrations, product synchronization, and order coordination.

Leadership Lens

  • • Integrated courier workflows so fulfillment moved more directly from order events into downstream operational steps.
  • • Connected WooCommerce product and order synchronization to keep data aligned across systems with less manual overhead.
  • • Used Python for targeted backend tasks where operational reliability and task automation benefited from a separate implementation path.

Delivery Outcome

Improved commerce operations by reducing handoff friction between ordering, synchronization, and fulfillment workflows.

Case Study

Nafs AI

Monetized AI application

Stack: ASP.NET Core, AWS Lambda, DynamoDB, MariaDB, GPT-3.5, in-app billing

Built backend services for a monetized AI chatbot application with crediting, in-app purchases, and payment-connected user flows.

Leadership Lens

  • • Implemented ASP.NET Core services with Lambda-backed workloads to support app behavior beyond a simple synchronous API model.
  • • Used DynamoDB and MariaDB where different workload patterns benefited from different storage models instead of forcing a single database choice everywhere.
  • • Integrated Google in-app billing and bKash payment handling so the credit system mapped directly to the product's revenue model.

Delivery Outcome

Supported the application's purchase lifecycle and access model with backend systems built around monetization and controlled usage.

Case Study

Fowl Play Live

Live streaming and transaction platform

Stack: Azure Live Streaming, Azure Functions, serverless services, secure payments

Built backend services for a live streaming platform where performance, secure payments, and serverless processing all had to work together.

Leadership Lens

  • • Used Azure live and serverless capabilities to keep streaming-related processing responsive while avoiding unnecessary infrastructure overhead.
  • • Designed secure transaction and crediting flows as core system responsibilities rather than secondary feature work.
  • • Aligned data and service choices around platform safety, responsiveness, and production reliability.

Delivery Outcome

Delivered a backend shape that supported live user activity together with payment-sensitive workflows.

Case Study

iHope

Healthcare operations backend

Stack: .NET Core Web API, SQL Server, Windows Service

Led backend development for a healthcare application supporting digital prescriptions, operator workflows, and access to nearby facilities.

Leadership Lens

  • • Structured APIs and service integrations around real operational flows instead of only isolated technical endpoints.
  • • Used .NET Core Web API with Windows Service integrations to support workflow-heavy business processes that needed dependable execution.
  • • Kept the system focused on operator efficiency and process clarity so the backend improved more than just data exchange.

Delivery Outcome

Enabled more reliable prescription and operator workflows with backend services designed around practical healthcare operations.