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hkmangla

PROFILE

Hkmangla

Hemant Mangla engineered robust backend systems for the nammayatri/nammayatri repository, delivering over 100 features and 70 bug fixes across 18 months. He architected and evolved APIs for multimodal journey planning, fare calculation, and financial automation, applying Haskell and TypeScript to ensure type safety and maintainability. His work included domain-driven data modeling, concurrency control, and integration with payment gateways and external transit APIs. By refactoring legacy flows and introducing modular kernels for finance and routing, Hemant improved reliability, scalability, and data integrity. His technical depth enabled seamless onboarding, resilient booking workflows, and automated financial operations, supporting business growth and platform resilience.

Overall Statistics

Feature vs Bugs

61%Features

Repository Contributions

292Total
Bugs
71
Commits
292
Features
112
Lines of code
67,175
Activity Months18

Your Network

118 people

Work History

March 2026

3 Commits • 2 Features

Mar 1, 2026

March 2026—Delivered core financial automation and dashboard booking enhancements for nammayatri/nammayatri, focusing on business value and reliability. Implemented FinanceM monad transformer to encapsulate financial context, improve error handling, and automate ledger entry collection; introduced scheduled batch payouts for automated payout workflows; enhanced payout management APIs and data models; added dashboard-driven booking support with multi-booking processing; fixed a dashboard-related booking bug to allow multiple bookings on dashboard requests. Impact: reduced manual operations, improved financial precision and throughput for dashboard bookings; tech skills: functional programming patterns, API/data model evolution, scheduling automation.

February 2026

28 Commits • 10 Features

Feb 1, 2026

February 2026 (2026-02) monthly summary focused on delivering a robust financial backbone, enhanced payout and invoicing capabilities, and API modernization to support scalable growth and improved merchant value.

January 2026

16 Commits • 8 Features

Jan 1, 2026

January 2026: Delivered significant platform enhancements across two repositories (nammayatri/nammayatri and nammayatri/shared-kernel), focusing on data integrity, booking flows, resilience, and payments. Implemented cross-device passes management with multi-status payment handling; enhanced booking system with rider ID validation, code-based lookups, and agent bookings; introduced a circuit breaker for public transport and flexible fare caching; integrated fixed-route search support via special location IDs; hardened backend configuration safety with explicit Dhall typing; expanded vehicle management with skipFleetChecks and new cab types; advanced payments/payouts including BoothOnline, Beckn integration, and payout tracking; and improved Karix WhatsApp messaging with OTP API enhancements. These changes collectively deliver more reliable user experiences, robust data consistency across devices, and stronger platform resilience and partner integrations.

December 2025

11 Commits • 4 Features

Dec 1, 2025

December 2025 saw targeted backend and platform-enablement work across nammayatri/nammayatri that strengthened customer-facing features, improved issue handling, and aligned pricing and discovery with business goals. Key outcomes include scalable Pass Management APIs, enhanced dashboard support, flexible Issue Management APIs, bug fixes for assignee updates, and platform-specific search and IST-based travel time logic that together elevate customer experience, data integrity, and operational efficiency.

November 2025

18 Commits • 5 Features

Nov 1, 2025

November 2025 performance summary for the nammayatri backend. Focused on expanding the Purchased Pass ecosystem, enabling transactional workflows, and strengthening pricing, offers, and validation. Delivered data-model enhancements, new APIs, and reliability improvements to support revenue growth, personalized experiences, and scalable operations.

October 2025

15 Commits • 7 Features

Oct 1, 2025

October 2025 at nammayatri/nammayatri delivered significant resilience and performance improvements across multimodal onboarding, route data handling, and billing capabilities. The month focused on hardening error handling, enabling flexible data retrieval, and expanding domain models to support advanced workflows while strengthening security and data integrity.

September 2025

13 Commits • 3 Features

Sep 1, 2025

September 2025 monthly summary: Delivered major enhancements to multimodal routing with route switching, enriched journey data model for tracking accuracy and single/multi-modal search handling, improved intercity serviceability error reporting, and data/quote classification improvements. Also performed targeted bug fixes and code cleanups to improve reliability and maintainability. Result: more accurate routing, better post-journey auditing, lower error rates, and clearer analytics for quotes.

August 2025

29 Commits • 16 Features

Aug 1, 2025

August 2025 focused on strengthening multimodal routing accuracy, performance, and maintainability across the NamMayatri platform. Key features delivered include rail itinerary merging enhancements, domain-aware routing, and infrastructure upgrades for richer stop metadata, fare handling, and API surfaces. Major bug fixes addressed metro leg merging, via handling edge-cases, and tier grouping, improving routing reliability. Overall, the work yielded faster, more accurate itineraries, cleaner data models, and scalable APIs, enabling better user experiences and easier future evolution.

July 2025

2 Commits • 2 Features

Jul 1, 2025

July 2025 monthly summary for nammayatri/nammayatri: Delivered foundational documentation and backend optimizations for the Multimodal Journey System. Implemented comprehensive developer/API docs and a backend refactor to streamline journey leg state handling across Bus, Metro, Subway, Taxi, and Walk, boosting reliability and performance. These efforts improve onboarding, cross-modal data consistency, and overall maintainability, setting a solid foundation for future scalability.

June 2025

4 Commits • 2 Features

Jun 1, 2025

June 2025 performance summary for nammayatri/nammayatri: Delivered backend API enhancements for multimodal journeys and timetable data, aligning business capabilities with product goals. Implemented a new Completion API to mark multimodal journeys as complete, updated journey legs, and hardened status transitions; fixed response type inconsistencies to improve frontend reliability. Introduced Timetable Information API to retrieve route/stop timetables with support for multiple vehicle types (METRO), modeling timetable entries for scalable data delivery. All changes are backed by clear commit history and focused on maintainability and future feedback loops.

May 2025

7 Commits • 5 Features

May 1, 2025

May 2025: nammayatri/nammayatri delivered API and data-model enhancements across tracking, multimodal routing, FRFS pricing, and QR workflows, with targeted bug fixes to improve data fidelity and user experience. Key features include Track Vehicles API enhancement with platformType (default to APPLICATION); Multimodal Destinations and City Context (city parameter on public transport data, sgstdDest in station model); FRFS Quotation child pricing with estimatedChildFare propagated in LegInfo; Unified QR Code for Suburban Transport across CRIS Subway and providers; Enhanced Multimodal Booking List with journey details. Major bugs fixed include fix: fix track vehicles API; fix: db query; fix: remaining fixes; fix: return child fare to legInfo; fix: fix unified qr issue for suburban. Overall impact: improved routing accuracy, pricing clarity, cross-provider QR handling, and richer journey data, enabling better user experience and informed decision-making. Technologies/skills demonstrated: API design and parameterization; data-model enhancements; database query optimization; cross-provider integration; QR code workflow unification; emphasis on business value and performance.

April 2025

49 Commits • 12 Features

Apr 1, 2025

April 2025 monthly summary focusing on key accomplishments and business value across two repositories: nammayatri/nammayatri and nammayatri/shared-kernel. Highlights include delivery of service tier availability for buses and suburban routes, implementation of a single-mode bus booking flow, OSRM routing enhancements with bike/walk support, data versioning fixes, and foundational multimodal data improvements. Substantial bug fixes improved data integrity, performance, and user experience, enabling more reliable multi-modal journeys and accurate fare calculations. The work demonstrates strong backend API resilience, routing architecture, data modeling, and integration skills that directly impact reliability, user conversions, and operational visibility.

March 2025

24 Commits • 6 Features

Mar 1, 2025

March 2025 monthly summary for nammayatri projects. Focused on expanding multimodal capabilities, strengthening reliability, and enabling direct booking workflows, while building a robust data and tagging foundation for scalable ops.

February 2025

16 Commits • 10 Features

Feb 1, 2025

February 2025 monthly summary for nammayatri deployments across nammayatri/nammayatri and shared-kernel. Focus: features delivered, bugs fixed, impact, and skills demonstrated.

January 2025

30 Commits • 11 Features

Jan 1, 2025

January 2025 delivered meaningful, business-focused improvements across the NamMayatri platform and its Open Transit kernel. The work targeted reliability, data richness, and user experience in multimodal journeys, taxi integrations, and transit API data modeling. Key outcomes include the introduction of taxi and metro functions, a unified multimodal payment flow for CUMTA, enriched route info and vehicle taxonomy, and robust tracking for multimodal rides. In parallel, data/API refinements in LegInfo and OpenTripPlanner improved quote accuracy, route visibility, and platform consistency. Overall impact: stronger customer value through faster, more accurate routing and pricing, improved data fidelity across APIs, and a foundation for scalable multimodal features and transit integrations. The month also reinforced our ability to stabilize complex flows (pricing, tracking, and journey state) and to ship API/data-model enhancements with clear business benefits.

December 2024

10 Commits • 5 Features

Dec 1, 2024

December 2024 performance highlights across nammayatri/nammayatri and shared-kernel. Delivered multimodal pricing capabilities, enhanced fare policy with tips, and robust intercity ride support, while hardening booking reliability and expanding data interoperability. Focused on business value: expanded pricing models, improved cancellation reliability, reduced race conditions, and better cross-city trip estimation and data exchange.

November 2024

15 Commits • 3 Features

Nov 1, 2024

November 2024 performance: Delivered end-to-end multi-stop support (stops storage, intercity stops, and correct stop ordering) in nammayatri/nammayatri; added feedbackSkipped flag and adjusted rider flow for skipped feedback during ride creation and updates; enhanced quotes/search to include title and stop data; fixed scheduled ride status handling to keep idle for future bookings; stabilized routing for multiple waypoints via shared-kernel, including OSRM routing fixes and compilation issue resolutions; corrected Google Maps Directions API aggregation by switching from foldr to foldl to properly accumulate distance/duration/steps. Business value: more reliable trip planning, accurate route calculations, improved rider experience, and faster, more stable release cycles across nammayatri/nammayatri and shared-kernel.

October 2024

2 Commits • 1 Features

Oct 1, 2024

October 2024 performance summary for nammayatri/nammayatri focused on API reliability, workflow automation, and API design improvements. Delivered changes enhance proactive user engagement checks, stabilized service boundaries, and reinforced type-safe integration with downstream clients.

Activity

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Quality Metrics

Correctness84.6%
Maintainability83.2%
Architecture81.6%
Performance76.0%
AI Usage25.8%

Skills & Technologies

Programming Languages

DhallGraphQLHaskellJavaScriptMarkdownNixSQLTypeScriptYAMLsql

Technical Skills

API DesignAPI DevelopmentAPI IntegrationAPI OptimizationAPI RefactoringAPI RefinementAPI designAPI developmentAPI integrationAuthenticationBackend DevelopmentBug FixingBuild SystemsCI/CDCode Cleanup

Repositories Contributed To

2 repos

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

nammayatri/nammayatri

Oct 2024 Mar 2026
18 Months active

Languages Used

HaskellNixSQLTypeScriptYAMLDhallMarkdownsql

Technical Skills

API DevelopmentAPI IntegrationBackend DevelopmentAPI DesignBuild SystemsData Handling

nammayatri/shared-kernel

Nov 2024 Jan 2026
8 Months active

Languages Used

HaskellGraphQL

Technical Skills

API IntegrationBackend DevelopmentBug FixingAPI DevelopmentData SerializationData Modeling