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Anirban Das

PROFILE

Anirban Das

Anirban Das engineered robust backend systems for the nammayatri/nammayatri repository, delivering features such as driver cancellation penalties, insurance integration, and granular fleet management. He applied deep expertise in Haskell and SQL to design scalable APIs, refine data models, and implement resilient error handling, ensuring reliable business logic across payments, bookings, and onboarding workflows. His work included integrating external services, optimizing database queries, and enhancing access control, all while maintaining type safety and system integrity. By addressing concurrency, caching, and configuration management, Anirban enabled maintainable, high-availability services that improved operational efficiency and supported evolving business requirements at scale.

Overall Statistics

Feature vs Bugs

82%Features

Repository Contributions

82Total
Bugs
9
Commits
82
Features
40
Lines of code
24,255
Activity Months12

Work History

October 2025

2 Commits • 1 Features

Oct 1, 2025

Month: 2025-10 Concise monthly summary focusing on business value and technical achievements for the nammayatri/nammayatri repo. The key deliverable this month was the Driver Cancellation Penalties System, delivered end-to-end with API definitions and data model updates, plus a bug fix to ensure correct penalties application. Overall impact: Strengthened revenue protection by ensuring penalties are detected, calculated, waivable, and integrated into driver fees, enabling consistent enforcement and reliable data for finance and analytics. Technologies/skills demonstrated include backend feature engineering, API design, data type updates, integration with driver-fee calculation flows, and robust bug fixes in a payments-related domain. This summary highlights what was delivered and its value to the business and technical quality of the platform.

September 2025

2 Commits • 1 Features

Sep 1, 2025

September 2025 — Delivered enhancements to route search and improved resilience of fare data fetch. Implemented Route Search Enhancements with Parent Stops and Batch Route-Stop Lookup, enriching station metadata and adding a batch API; updated the database to support the new functionality. Also implemented resilient GTFS fare retrieval by wrapping getFareThroughGTFS in error handling, logging failures, and returning an empty fares list as a safe fallback to prevent crashes. Together, these changes broaden search coverage, improve data linkage, and increase system reliability, delivering tangible business value and a smoother user experience.

August 2025

13 Commits • 5 Features

Aug 1, 2025

August 2025 monthly summary for nammayatri/nammayatri focusing on key features delivered, major bugs fixed, impact, and tech skills demonstrated, with a business value lens.

July 2025

6 Commits • 1 Features

Jul 1, 2025

July 2025 focused on reliability, data integrity, and expanding fleet ownership capabilities. Implemented multi-owner/group support, fixed critical insurance processing gaps, and improved data retrieval consistency, resulting in more accurate dashboards and scalable fleet management across NAMMAYATRI fleet operations.

June 2025

11 Commits • 7 Features

Jun 1, 2025

June 2025 performance summary for nammayatri repositories. Delivered core platform features, enhanced insurance coverage across driver and rider flows, and strengthened fleet management capabilities. Focused on delivering business value through scalable APIs, data model refinements, and performance optimizations while maintaining robustness and security.

May 2025

9 Commits • 4 Features

May 1, 2025

Concise monthly summary for May 2025 covering key features delivered, major bugs fixed, impact, and skills demonstrated for nammayatri/nammayatri.

April 2025

7 Commits • 3 Features

Apr 1, 2025

April 2025: Key backend and product deliverables for nammayatri/nammayatri focused on onboarding, ticketing dashboards, and merchant data modeling. Delivered scalable onboarding API endpoints, bank-onboarding steps, and role-based access control; added dashboard type differentiation in User accounts; introduced merchant fleet hierarchy support; and fixed critical ticket onboarding and SPC dashboard issues. These changes improved onboarding speed, governance, and tailored experiences for merchants and users, while enhancing data access patterns for scalable growth.

March 2025

5 Commits • 4 Features

Mar 1, 2025

March 2025 monthly summary for NamMayatri core repos. Focused on delivering high-impact features, correcting billing edge-cases, and strengthening operational telemetry with configurable location tracking. Business value delivered includes higher booking conversion, accurate fare calculations, and improved safety monitoring, while expanding system configurability and maintainability.

February 2025

10 Commits • 4 Features

Feb 1, 2025

February 2025 performance highlights focused on delivering granular delivery capabilities, strengthening booking reliability, and preparing for future payment splits across the NamMayatri platforms. Key features delivered: - Truck Delivery Rides: Parcel details and backend truck variants. Enabled parcel type and quantity fields in booking/search flows and added backend support for multiple truck variants (backend/feat/Truck Delivery ride flow; backend/feat/Truck Delivery variants). - Vendor Split Enhancements for Ticket Bookings: Multi-unit vendor splits with rounding, config-driven enable/disable of split settlements, and safer split handling (backend/feat/ticket-booking-vendor-split; backend/fix/ticket-booking-split; backend/feat/vendor-split-rounding; backend/feat/rider-app-safe-split). - Ticket Booking Blocking with Expiration and Initialization Fixes: Introduced blockExpirationTime, RefundInitiated status, and fixes for booked counts initialization to prevent race conditions (Fixing Race condition of Ticket booking; backend/fix/ticket-booking-previous-state-update). - Ticket Booking Details Display Bug Fix: Correct short ID passed to order status service calls to ensure accurate booking details (backend/fix/ticket-booking-details-old-code). - Juspay Split Payments Configuration: Added isSplitEnabled flag to Juspay configuration to prepare the system for split payments (backend/adding isSplitEnabled). Overall impact and business value: - Improved delivery throughput and accuracy with granular truck delivery flows and variants. - More reliable revenue recognition and settlements through robust vendor splits and rounding. - Higher booking reliability by mitigating race conditions in seat blocking and ensuring accurate order-status representations. - Readiness to support split payments with Juspay reduces potential merchant friction and enables new monetization models. Technologies/skills demonstrated: - Backend service development and integration across bookings, payments, and rider-app flows. - Data modeling for parcel fields, block expirations, and split logic; config-driven feature enablement; RAC (race condition) prevention and state initialization.

January 2025

2 Commits • 2 Features

Jan 1, 2025

January 2025 monthly summary: Delivered two critical features across repos with a focus on payments reliability and fleet visibility. In nammayatri/shared-kernel, completed Juspay gateway integration, refund ID refactor, and added card info support, improving transaction visibility and refunds accuracy. In nammayatri/location-tracking-service, expanded VehicleType enum to include additional delivery truck sizes, enabling finer fleet tracking and reporting. Key outcomes: improved refund processing accuracy, richer payment data, and better fleet analytics, driving faster issue resolution, improved customer experience, and more precise resource planning. Technologies/skills demonstrated: gateway integrations, data structure enhancements, enum design, cross-repo collaboration, and maintainable API changes.

December 2024

11 Commits • 5 Features

Dec 1, 2024

December 2024 monthly performance summary for NAM MAYatri projects. Delivered end-to-end payment and driver-ops enhancements across two repositories (nammayatri/nammayatri and nammayatri/shared-kernel), with a focus on business value, reliability, and maintainability.

November 2024

4 Commits • 3 Features

Nov 1, 2024

November 2024 performance summary for nammayatri/nammayatri: Delivered three major features, implemented a hotfix to bolster SMS delivery reliability, and advanced risk/compliance capabilities. The Delivery SMS Notification System Enhancements improve sender/receiver notification flow and phone handling; Parcel Image Display on BPP Dashboard enables parcel imagery in the dashboard; Driver Risk and Compliance Enhancements extend data models with new flags and cooldowns and unify risk blocks. The work improves notification reliability, asset visibility, and compliance controls, driving better customer experience and operational efficiency. Technologies demonstrated include backend refactoring, API design, domain logic, and data model evolution.

Activity

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Quality Metrics

Correctness85.2%
Maintainability83.6%
Architecture82.2%
Performance78.6%
AI Usage39.8%

Skills & Technologies

Programming Languages

CabalDhallHaskellNixRustSQLTypeScriptYAML

Technical Skills

API DesignAPI DevelopmentAPI IntegrationAWS S3 IntegrationAccess ControlBBPS IntegrationBackend DevelopmentBug FixingCachingCloud Services (AWS S3)Cloud Storage IntegrationConcurrency ControlConfiguration ManagementData HandlingData Modeling

Repositories Contributed To

4 repos

Overview of all repositories you've contributed to across your timeline

nammayatri/nammayatri

Nov 2024 Oct 2025
11 Months active

Languages Used

HaskellSQLYAMLDhallNixCabalTypeScript

Technical Skills

API DesignAPI DevelopmentAPI IntegrationAWS S3 IntegrationBackend DevelopmentConfiguration Management

nammayatri/shared-kernel

Dec 2024 Jun 2025
4 Months active

Languages Used

Haskell

Technical Skills

Backend DevelopmentAPI IntegrationPayment Gateway IntegrationData ModelingHaskell

nammayatri/location-tracking-service

Jan 2025 Mar 2025
2 Months active

Languages Used

RustDhall

Technical Skills

Backend DevelopmentAPI IntegrationConfiguration ManagementRustSystem Design

nammayatri/asset-store

Mar 2025 Mar 2025
1 Month active

Languages Used

No languages

Technical Skills

No skills

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