Jaswant Kumar
Contact details — on requestProof of Work — on request
Experience
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Software Development Engineer | Node.js · Python · PostgreSQL · REST APIs
Vodafone Idea Limited · Jan 2024 – Present
- KPI MONITORING TOOL
- Designed a PostgreSQL data model with RESTful APIs — tracking 15+ metrics across 23 telecom circles and 10 HO teams.
- Constructed a fault-tolerant hourly ingestion pipeline processing lakh-scale KPI records — maintaining 95%+ pipeline success rate across PAN India.
- Optimised data-fetching via memoisation and PostgreSQL indexing, cutting API response time by ~40% under heavy concurrent load.
- Eliminated 3–4 hours daily by automating 20+ report generation workflows with scheduled execution and CSV/Excel exports.
- MSDB AUTOMATION SYSTEM
- Automated correction and validation of 5-6 domain files using Python — saving 2-3 hours of daily manual effort.
- Consolidated 7-10 data sources into a normalised master dataset — achieving 92% record accuracy across lakh-scale records.
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SOFTWARE DEVELOPMENT ENGINEER - 1
Vodafone Idea Pvt. Ltd · Jul 2023 – Feb 2026
- Designed a PostgreSQL data model with RESTful APIs for KPI ingestion, aggregation and retrieval tracking 15+ metrics across 23 telecom circles and 10 HO teams.
- Constructed a fault-tolerant hourly ingestion pipeline on PostgreSQL processing lakh-scale KPI records, with 95%+ pipeline success rate across PAN India operations.
- Optimised server-side data-fetching via memoisation and PostgreSQL indexing, cutting API response time by ~40% under heavy concurrent load across 30+ internal teams.
- Engineered JWT authentication with role-based access control, managing 10K+ users and 2000+ concurrent sessions.
- Eliminated 3–4 hours daily by automating 20+ report generation workflows with scheduled execution, email distribution and CSV/Excel exports.
- Shipped a ReactJS dashboard on custom REST APIs with 10-min refresh cycles, Chart.js trends and modal drill-downs.
- Automated correction and validation of 5-6 domain files using Python rule-based transformations - saving 2-3 hours of daily manual effort across cross-team feedback loops.
- Consolidated 7-10 data sources into a normalised master dataset for consistent querying across lakh-scale records.
- Exposed an internal reporting interface with query, preview, download and limited correction workflows - reducing cross team dependencies and streamlining recurring reporting operations.
- Integrated user feedback into a weekly incremental reconciliation loop, achieving 92% record accuracy across cycles.
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Graduate Engineer Trainee | Python · Automation · PostgreSQL
Vodafone Idea Limited · Jul 2023 – Dec 2023
- PYTHON AUTOMATION
- Developed 10+ Python automation scripts to streamline repetitive operational workflows — reducing manual effort by 3-4 hours daily.
- Built monitoring and reporting tools supporting 5+ operational workflows — enabling faster issue resolution across internal teams.
Software Engineer Intern | ReactJS · Node.js · REST APIs
EduVitae Services · May 2023 – Jul 2023
- Crafted 7-8 backend RESTful APIs with unit test coverage — streamlining core platform operations and ensuring production-ready code quality.
- Revamped web portal using ReactJS with an optimised data model — improving platform performance by 20%.
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SOFTWARE DEVELOPER INTERN
EduVitae Services (EdTech) · May 2022 – Jul 2022
- Revamped web portal using ReactJS with an optimised data model - enhancing interactivity and improving platform performance by 20%.
- Crafted 7-8 backend RESTful APIs with unit test coverage – streamlining core platform operations and ensuring production-ready code quality.
Skills 0 proven through work
Also works with
Interpersonal SkillsRapid LearningRapid Technology OnboardingSelf-Directed LearningTechnical Knowledge SharingMentoring and Peer CoachingProblem SolvingInformation ResearchDecision MakingTeamworkQuick ThinkingAdaptabilityCreative BrainstormingWork Planning and PrioritizationScalable System DesignWebpack ConfigurationClient-Side Caching StrategiesUsability TestingAgile MethodologyPerformance TestingUI Performance OptimizationUser Experience ImprovementFrontend Routing ImplementationLazy Loading ImplementationAPI Caching ImplementationDynamic UI Feature ImplementationMemoization ImplementationDatabase Query OptimizationAsynchronous ProgrammingPerformance Metrics AnalysisDatabase Index CreationData ModelingInformation DisseminationDatabase ManagementPostgreSQL Database UsageApplication Performance OptimizationEvent Listener ImplementationBackend DevelopmentDatabase Data Entry and UploadData ExtractionMicrosoft ExcelWorking with CSV FilesDashboard UI DesignRBAC Module DevelopmentBusiness Logic ImplementationData ValidationData TransformationData CollectionMonitoring AutomationReact DevelopmentNode.js DevelopmentMERN Stack Development
Proof of Work
Proof of Work
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Education
B.Tech, Electronics Engineering
IIT (BHU) Varanasi · 2019 — 2023
Contact details
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