nammayatri/nammayatri
Jun 2025 – Feb 2026
7 Months active
Languages Used
HaskellSQLYAML
Technical Skills
API DesignBackend DevelopmentBug FixingDatabase ManagementHaskellData Modeling
Hari Krishna
PROFILE
Hari Krishna
Harikrishna Dupaguntla developed and enhanced backend systems for the nammayatri/nammayatri repository, focusing on API-driven features, real-time data streaming, and robust data modeling. Over seven months, he delivered booking reliability improvements, granular journey tracking, and live operational metrics by leveraging Haskell, SQL, and Kafka. His work included designing APIs for fare feedback, daily metrics, and alert incident management, as well as optimizing booking flows and multimodal routing. By refining database schemas and introducing performance instrumentation, Harikrishna enabled scalable analytics, improved data integrity, and reduced incident resolution time, demonstrating depth in backend development and a strong focus on operational visibility.
Overall Statistics
Feature vs Bugs
83%Features
Repository Contributions
29Total
Bugs
3
Commits
29
Features
15
Lines of code
4,411
Activity Months7
Your Network
115 peopleWork History
February 2026
11 Commits • 6 Features
Feb 1, 2026February 2026 (2026-02) delivered a cohesive set of API-driven enhancements, data-model refinements, and instrumentation across the NamMayatri platform to boost reliability, scalability, and operational visibility. Key outcomes include stronger alert incident management with RCA-enabled metadata, optimized FRFS daily API and booking flows, richer daily metrics reporting, tailored multimodal routing, and a refactored live vehicle timings API. Added latency instrumentation around route serviceability to enable data-driven performance improvements. These changes reduce incident resolution time, improve booking reliability, and enhance decision-making for operations and product teams.
11 Commits • 6 Features
Feb 1, 2026February 2026 (2026-02) delivered a cohesive set of API-driven enhancements, data-model refinements, and instrumentation across the NamMayatri platform to boost reliability, scalability, and operational visibility. Key outcomes include stronger alert incident management with RCA-enabled metadata, optimized FRFS daily API and booking flows, richer daily metrics reporting, tailored multimodal routing, and a refactored live vehicle timings API. Added latency instrumentation around route serviceability to enable data-driven performance improvements. These changes reduce incident resolution time, improve booking reliability, and enhance decision-making for operations and product teams.
February 2026
January 2026
2 Commits • 1 Features
Jan 1, 2026Month: 2026-01. Focused on delivering real-time operational visibility and improving fare accuracy. Key outcomes include a new Live Metrics API for FRFS alerts dashboard and a targeted bug fix that corrects fare quote determination by ticket type for return journeys. Repository nammayatri/nammayatri remains the primary driver for these changes, aligning engineering efforts with business value of accurate pricing and proactive monitoring.
January 2026
2 Commits • 1 Features
Jan 1, 2026Month: 2026-01. Focused on delivering real-time operational visibility and improving fare accuracy. Key outcomes include a new Live Metrics API for FRFS alerts dashboard and a targeted bug fix that corrects fare quote determination by ticket type for return journeys. Repository nammayatri/nammayatri remains the primary driver for these changes, aligning engineering efforts with business value of accurate pricing and proactive monitoring.
December 2025
8 Commits • 2 Features
Dec 1, 2025December 2025: Strengthened ticketing accuracy, routing fidelity, and multimodal search controls for nammayatri/nammayatri. Delivered Train Type Aware Quotes and Routing, enhanced data models for trainType differentiation, and improved booking reliability by sourcing ticketType directly from quotes. Implemented selective service tier filtering in timetable and route fare calculations, and stabilized suburban routing logic.
8 Commits • 2 Features
Dec 1, 2025December 2025: Strengthened ticketing accuracy, routing fidelity, and multimodal search controls for nammayatri/nammayatri. Delivered Train Type Aware Quotes and Routing, enhanced data models for trainType differentiation, and improved booking reliability by sourcing ticketType directly from quotes. Implemented selective service tier filtering in timetable and route fare calculations, and stabilized suburban routing logic.
December 2025
November 2025
1 Commits • 1 Features
Nov 1, 2025November 2025 monthly summary for the nammayatri project highlighting focused backend delivery and performance improvements in metrics capabilities.
November 2025
1 Commits • 1 Features
Nov 1, 2025November 2025 monthly summary for the nammayatri project highlighting focused backend delivery and performance improvements in metrics capabilities.
October 2025
3 Commits • 2 Features
Oct 1, 2025October 2025 Monthly Summary — nammayatri/nammayatri Overview: Delivered key data-collection enhancements and real-time streaming capabilities, while safeguarding data integrity by pausing an automatic fleet-number finalization workflow during rider-tracking. These changes strengthen analytics, observability, and responsiveness for operations and product teams.
3 Commits • 2 Features
Oct 1, 2025October 2025 Monthly Summary — nammayatri/nammayatri Overview: Delivered key data-collection enhancements and real-time streaming capabilities, while safeguarding data integrity by pausing an automatic fleet-number finalization workflow during rider-tracking. These changes strengthen analytics, observability, and responsiveness for operations and product teams.
October 2025
July 2025
1 Commits • 1 Features
Jul 1, 2025Month: 2025-07 | Repository: nammayatri/nammayatri. Delivered granular sub-leg status updates for Metro and Subway journeys by introducing a subLegOrder parameter and refactoring related backend functions. This enables per-leg progress tracking within multi-leg journeys and ensures the main booking status reflects completion only after all sub-legs are finished. The change is backed by a focused commit and lays groundwork for enhanced analytics and customer-facing journey visibility. Impact includes stronger data integrity, clearer ownership of journey state, and smoother future feature expansion for other modes.
July 2025
1 Commits • 1 Features
Jul 1, 2025Month: 2025-07 | Repository: nammayatri/nammayatri. Delivered granular sub-leg status updates for Metro and Subway journeys by introducing a subLegOrder parameter and refactoring related backend functions. This enables per-leg progress tracking within multi-leg journeys and ensures the main booking status reflects completion only after all sub-legs are finished. The change is backed by a focused commit and lays groundwork for enhanced analytics and customer-facing journey visibility. Impact includes stronger data integrity, clearer ownership of journey state, and smoother future feature expansion for other modes.
June 2025
3 Commits • 2 Features
Jun 1, 2025June 2025: Reliability, data, and traceability improvements for nammayatri/nammayatri. Delivered a booking race-condition fix, introduced Fare Feedback API, and extended leg data with ticket numbers to improve end-to-end trip visibility and user experience. These changes reduce booking failures near expiration, enable user feedback on fares, and enhance analytics and reconciliation across transport modes.
3 Commits • 2 Features
Jun 1, 2025June 2025: Reliability, data, and traceability improvements for nammayatri/nammayatri. Delivered a booking race-condition fix, introduced Fare Feedback API, and extended leg data with ticket numbers to improve end-to-end trip visibility and user experience. These changes reduce booking failures near expiration, enable user feedback on fares, and enhance analytics and reconciliation across transport modes.
June 2025
Activity
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Quality Metrics
Correctness85.6%
Maintainability80.6%
Architecture80.6%
Performance81.4%
AI Usage28.2%
Skills & Technologies
Programming Languages
HaskellSQLYAML
Technical Skills
API DesignAPI DevelopmentAPI designAPI developmentBackend DevelopmentBug FixingData ModelingDatabase ManagementDatabase Schema DesignGraphQLHaskellHaskell programmingKafkaReal-time Data Streamingbackend development
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