s.amsakib.com
Let’s talk
TSorbitax.mdportfolio / 2026
← All selected work

CASE STUDY 02 / ORBITAX

Engineering for complexity.

Reliable distributed workflows, faster data access, and enterprise tax tools built across six years of engineering contributions.

ROLEAssociate → Senior Software Engineer
PERIODNov 2018 — May 2025
STATUSDelivered
C# / .NETAngularMongoDBMassTransit
50%faster Forms Data APIs
20%less scenario duplication processing time

01 / CONTEXT

The challenge

Enterprise tax software combines complex calculations, data-heavy workflows, and distributed operations. My work at Orbitax addressed these challenges across multiple products and roles.

02 / OWNERSHIP

My responsibility

I progressed from Associate Software Engineer to Senior Software Engineer, contributing to backend and frontend development, workflow architecture, and mentoring.

03 / THE WORK

Engineering contributions

01

Remove a legacy data dependency

Migrated Forms Data from Microsoft SQL Server to MongoDB, eliminating calls to the legacy platform and improving API speed by 50%.

02

Coordinate distributed workflows

Implemented the SAGA pattern to improve distributed workflow reliability and reduce scenario duplication processing time by 20%.

03

Build enterprise product capabilities

Designed and developed Audit Tracker 2 with ASP.NET Core Web API and Angular. Delivered a SpreadsheetGear-based spreadsheet solution using Event Sourcing and contributed to tax-calculator scenario and document workflows.

04 / THE BIGGER PICTURE

Architecture perspective

Distributed workflows need explicit coordination and recovery behavior. The diagram shows that general concern; these results came from separate Orbitax contributions, not one unified project.

WorkflowCoordinatorServiceEventNext step
Conceptual flow · Illustrative, not an internal system diagram

05 / IMPACT

What changed

  • Improved Forms Data API speed by 50%.
  • Reduced scenario duplication processing time by 20%.
  • Improved entity import/export workflows by 20% through in-memory caching.
  • Mentored junior engineers and interns, led technical sessions, and participated in code reviews.

Based on my professional experience as summarized in my resume. Figures are specific to the contributions described; underlying benchmarks and proprietary implementation details are not published here.

NEXT / SOLYNTRA

Building a strong foundation.

main Built with intention Dhaka, BD UTC+6UTF-8

Go somewhere.

WorkJourneyExperienceToolkitAboutContactView resume
↑ ↓ to move · Enter to selectEsc to close

sakib@portfolio: ~

Welcome to my corner of the internet.
Type help to explore. No shell access, just a little curiosity.