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Arjun Jaiswal

Backend Developer | React.js, Express.js, MySQL, Tailwind CSS

B.Tech - Computer Science and Engineering, Computer Science and Engineering, JSS Academy of Technical Education · 2027New DelhiAvailable immediatelyOpen to opportunities

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Tasks completed

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Average score

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Certificates

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Badges

1

Internships & jobs

About

Highly motivated and detail-oriented backend developer with expertise in React.js, Express.js, and MySQL. Proficient in designing scalable and efficient database systems.

Skills

React.jsExpress.jsMySQLTailwind CSSNode.jsPythonJavaScriptDockerPrisma ORMPostgreSQLRedisJWTGitGitHubVS CodePostmanData Structures and AlgorithmsOOPOperating SystemsDBMSCompetitive ProgrammingMicroservices

Experience

  1. Backend Developer Intern · LifeLinkr

    Nov 2025 – Feb 2026

    Internship · Janakpuri

    • Implemented server-side pagination, filtering, and sorting across 10+ KPI reports, aggregating data from up to 5 related MySQL tables per KPI. • Enhanced clinical reporting with 10+ dynamic filters across 36 report attributes, enabling flexible retrieval and analysis of patient data. • Reduced report API response time by 75%, from 6s to 1.5s, by optimizing SQL queries and implementing targeted indexing strategies. • Debugged a patient-registration → IVF → reporting workflow spanning 2–3 MySQL tables, identifying an incorrect foreign-key relationship and fixing data retrieval through corrected references and JOINs

    React.jsExpress.jsMySQLTailwind CSS

Projects

Beacon

Jun 2026

Architected a distributed uptime-monitoring platform with a decoupled scheduler-worker pipeline, using Redis-backed BullMQ queues to process HTTP health checks concurrently across stateless worker nodes.

Next.jsExpress.jsPostgreSQLPrismaRedisBullMQTurborepoDocker

FitAI

Jan 2026

Built a fitness analytics engine to track workout logs, streaks, and muscle-group volume, processing 30+ workout sessions across 10+ users to generate structured performance insights.

Node.jsExpress.jsMongoDBReactDockerGemini APIJWT

Education

  • JSS Academy of Technical Education

    B.Tech - Computer Science and Engineering, Computer Science and Engineering

    2023 – 2027

Certifications & achievements

  1. Contributed to open source with 3 merged pull requests

    Certification

    Contributed to open source with 3 merged pull requests across Ghostfolio (2) and Opsimate (1).

  2. 2 star on codechef

    Certification

  3. Knight badge on LeetCode

    Certification

  4. LeetCode Weekly Contest 451

    Certification

    Secured Global Rank 660 among 30,000+ participants.