Charan Raj Kandula
Full-Stack Engineer | LLM & Generative AI Integration | Cloud Architecture (GCP/AWS)
PROFESSIONAL SUMMARY
Senior Full-Stack Engineer with 6+ years shipping production systems across healthtech, fintech, and AI-native products — currently building LLM-powered patient recommendation infrastructure at Garner Health on a Next.js + GCP stack serving millions of insurance records daily. Independently founded and operate three live SaaS platforms (MusicWrite, BibleWrite, ComicWrite) with a combined 28K+ weekly active users, each powered by multi-model AI pipelines (Gemini, GPT-4, DALL·E, Lyria). Deep hands-on expertise across the full stack — from React/Next.js front ends to Node.js/Python microservices, MongoDB/PostgreSQL data layers, and GCP/AWS cloud infrastructure — with a strong focus on scalable architecture, CI/CD automation, and developer experience.
TECHNICAL SKILLS
Languages
TypeScriptJavaScript (ES6+)PythonJavaSQLHTML5/CSS3
Frontend
React 18+Next.js 14 (App Router, RSC, Server Actions)Redux/ZustandTailwind CSSMaterial UIResponsive Design
Backend
Node.jsExpress.jsFastAPIREST/GraphQL APIsWebSocketsNextAuth.jsJWT/OAuth 2.0
Databases
MongoDB AtlasPostgreSQLRedisPinecone (Vector DB)Prisma ORMMongoose
Cloud/DevOps
GCP (Cloud Run, Cloud Build, Pub/Sub, Scheduler, IAM, Secret Manager)AWS (EC2, S3, Lambda, CloudFront)DockerKubernetesTerraformGitHub Actions CI/CD
AI / ML
OpenAI GPT-4o/DALL·E 3Google Gemini/Imagen/LyriaLangChainRAG PipelinesPinecone Vector SearchPrompt EngineeringRLHF
PROFESSIONAL EXPERIENCE
Senior Full-Stack Engineer
Jan 2024 – PresentGarner HealthNew York, NY
- Architected and shipped the provider recommendation engine for 2M+ insurance claims on a Next.js + GCP Cloud Run stack, reducing member search-to-appointment time by 40%.
- Built LLM-powered natural-language search (RAG over claims data with Pinecone vector embeddings), increasing recommendation accuracy by 35% vs. keyword-only baseline.
- Designed real-time data pipelines processing millions of insurance records daily via GCP Pub/Sub + Cloud Functions, with 99.9% uptime SLA.
- Optimized PostgreSQL queries (composite indexes, materialized views, PgBouncer pooling), cutting critical endpoint latency from 840ms to 120ms (p99).
- Led migration from Pages Router to Next.js 14 App Router with Server Components — 34% bundle size reduction, Lighthouse score 68 → 92.
Full-Stack Engineer
Jun 2022 – Dec 2023PinwheelNew York, NY
- Owned end-to-end development of payroll connectivity APIs used by 50+ enterprise clients (banks, neobanks, lenders) processing $12B+ in annual payroll volume.
- Built React + TypeScript dashboard for real-time API monitoring, connection health, and webhook management — used daily by 200+ developers.
- Implemented automated error recovery system for failed payroll connections, reducing manual intervention by 60% and improving success rates from 87% to 96%.
- Shipped multi-tenant webhook infrastructure on AWS Lambda + SQS, handling 500K+ events/day with zero message loss.
Software Engineer
Jul 2020 – Dec 2021Cognizant Technology SolutionsHyderabad, India
- Delivered 15+ production features for enterprise banking and insurance clients on Java/Spring Boot microservices serving 100K+ daily users.
- Designed and implemented RESTful APIs for claims processing and policy management, reducing manual processing time by 50%.
- Built CI/CD pipelines with Jenkins + Docker, cutting deployment cycles from 2 weeks to 2 days.
- Mentored 4 junior engineers on testing best practices, achieving 90%+ code coverage across team services.
Software Developer Intern
Jan 2019 – Jun 2019Synactive India Pvt. Ltd.Hyderabad, India
- Shipped Android features (document viewer, night mode, voice assistant) to production app with 10K+ active users.
- Integrated REST APIs with Retrofit and applied defensive coding patterns, reducing crash rate by 25% based on Firebase Crashlytics.
FOUNDED PRODUCTS
MusicWrite — AI Music Generation Platform
musicwrite.netNext.jsNode.jsMongoDBGoogle LyriaGeminiImagenStripeGCP Cloud Run
- Founded and operate an AI music generation platform with 10,000+ creators and 50,000+ songs generated.
- Multi-model pipeline: Gemini generates lyrics, Google Lyria composes music, Imagen creates album art — all orchestrated via server-side queues.
- Implemented Stripe subscription billing with 3 tiers, webhooks, and usage metering — $X,XXX MRR.
- Deployed on GCP Cloud Run with auto-scaling (0→50 instances), serving 99.95% uptime.
BibleWrite — AI Bible Study Platform
biblewrite.comNext.jsNode.jsMongoDBPineconeLangChainGCP
- Built an AI-assisted Bible study platform with 18,000+ weekly active users across 142 countries supporting 12 languages.
- RAG pipeline over full Bible corpus using Pinecone + LangChain for context-grounded, citation-backed responses.
- Implemented collaborative study groups, verse highlighting, and cross-device sync with real-time WebSocket updates.
ComicWrite — AI Comic Generation Platform
comicwrite.comNext.jsNode.jsMongoDBDALL·E 3GeminiGCP
- Developed a multi-step agentic workflow: GPT-4o generates panel scripts → DALL·E 3 renders art → quality check feedback loop.
- Smart recommendation engine using Vector Search to suggest similar comic styles based on user preferences.
- Credit-based usage model with Stripe integration and GCP Cloud Run deployment.
EDUCATION
Stevens Institute of Technology
Jan 2022 – May 2023Master of Science in Computer ScienceHoboken, NJ
GPA: 3.8/4.0
Coursework: Distributed Systems, Machine Learning, Web Programming, Algorithms, Artificial Intelligence
JNTU Hyderabad
Aug 2016 – May 2020Bachelor of Technology in Computer ScienceHyderabad, India
GPA: 3.6/4.0
Coursework: Data Structures, Operating Systems, Database Systems, Computer Networks, Software Engineering