Software Engineer
I'm Vishnu Vivek Valeti, a software engineer with an M.S. in Computer Science and Engineering from the University of Florida. I build scalable, production-ready systems across backend services, data pipelines, full-stack applications, and developer tools.
At ReplyQuick, I shipped 8 versioned FastAPI endpoints, cut environment setup from 2 hours to under 30 minutes, processed 5,000+ dental images through a validated Python ingestion pipeline, and reduced reviewer analysis time by 30%. At UF, I reduced API p95 latency from 900ms to 280ms and research query latency by 35%. My projects span reliable webhook delivery, API release gating, and multithreaded C++ code search.
What I work with
University of Florida · Gainesville, FL
CourseworkAdvanced Data Structures, Distributed Operating Systems, Software Engineering, Natural Language Processing, Analysis of Algorithms, Distributed Multimedia Systems
Vignan University · Guntur, India
CourseworkData Structures, Object-Oriented Programming, Database Management Systems, Operating Systems, Machine Learning, Cloud Computing
ReplyQuick LLC
Shipped 8 versioned REST API endpoints in FastAPI with typed Pydantic schemas, standardizing response contracts across integrations and removing the need for client-side validation patches. Reduced new-environment setup time from 2 hours to under 30 minutes by standardizing Dockerfiles, environment configuration templates, and centralized logging for repeatable CI/CD deployments. Processed 5,000+ dental images through a Python ingestion pipeline with schema validation and structured error reports that exposed failed records with full diagnostic context. Cut reviewer analysis time by 30% by storing image-processing metrics in PostgreSQL and generating run-over-run comparison reports that enabled quality tracking across pipeline runs.
University of Florida
Built an EC2-hosted pipeline to ingest research datasets from Amazon S3 into PostgreSQL, cutting query latency by 35% through composite indexing and table partitioning. Optimized Dockerized FastAPI services by tuning PostgreSQL queries and implementing connection pooling, reducing p95 response latency from 900ms to 280ms. Built a React/FastAPI analytics dashboard with reusable visualizations for dataset size, labels, and ingestion status, cutting weekly research reporting overhead by 30%.
Vignan University
Delivered feature enhancements and resolved defects across attendance and staff-management modules for a React, Node.js, MySQL academic portal serving 2,500+ DAU. Saved ~40 staff hours per week across 5 departments by building mark-all and quick-edit attendance workflows, eliminating repetitive per-student updates. Cut portal page-load time from 3.2s to 1.0s by adding targeted MySQL indexes and refactoring inefficient multi-table JOIN queries across attendance and staff workflows. Secured grade and results endpoints with RBAC and OAuth 2.0, blocking unauthorized access paths identified during pre-launch testing.
6-tier impact scoring · 560 automated tests
GitHub Actions release gate for FastAPI, Spring Boot, Express, and OpenAPI. Traces changes up to 5 hops through a 6-tier dependency graph, scores endpoint risk from 0–100, streams async load-test metrics over WebSockets, and runs 560 automated tests.
Python · FastAPI · Claude API · PostgreSQL · React · TypeScript · WebSocket · shadcn/ui
100% delivery across 2,001 events · 7.3ms p95
Dockerized FastAPI/Celery webhook pipeline sustaining ~43 ingestions/sec across 20 concurrent clients and ~25 deliveries/sec with Redis queues, PostgreSQL idempotency, HMAC-SHA256 signing, SSRF protection, jittered retries, and Prometheus metrics.
Python · FastAPI · Redis · Celery · PostgreSQL · Docker · Prometheus
252 files/sec cold index · 20.7ms BM25 p50
Multithreaded C++17 code-search engine that cold-indexed 64,075 Linux kernel files (1.086 GB) at 252 files/sec into SQLite WAL. Two-phase BM25 and proximity ranking cut p50 latency from 331.9ms to 20.7ms, with trigram fuzzy search at 3.3ms p50.
C++17 · SQLite · CMake · BM25 · Multithreading · HTTP Server · React · TypeScript
Auth, subscriptions, and career-site scraping end-to-end
Full-stack job-tracking platform: Go + Gorilla Mux backend, React frontend, JWT auth with email-OTP password reset, and per-user company subscriptions that scrape career sites for new-grad SWE listings.
Go · React · PostgreSQL · JWT · Cypress · Docker
Actor-model concurrency + rate limiting in pure Go
Concurrent Go backend with in-memory state — sync.Map registries, per-entity RWMutex, actor-style Receive() dispatcher, token-bucket rate limiting, atomic counters with CAS, and a live /metrics endpoint.
Go · Actor Model · sync.Map · Token Bucket · REST
Hot-reloadable rules over native WebSockets
Real-time chatbot with hot-reloadable JSON rule evaluation, native WebSocket messaging, and containerized deployment.
React · TypeScript · Node.js · WebSockets · Docker
Offline-first Android, no telemetry
Privacy-focused Android habit tracker with streak tracking, smart reminders, and offline-first architecture using Material 3.
Kotlin · Jetpack Compose · Room · Hilt · Android
Signed R2 uploads + role-gated reader, all free-tier
Mobile-first manga reader SPA on Vercel with Cloudflare R2 image hosting. Secure signed-URL admin uploads, role-gated routes, lazy-loaded chapter pages, and bookmark/history persistence — all on free-tier infra.
React · TypeScript · Tailwind · Vite · Vercel · Cloudflare R2
20-week roadmap with offline sync, auth, and RLS
Next.js 14 study tracker for the JLPT N5 Japanese exam. 1,400+ tasks across a 20-week roadmap, Supabase auth with Row-Level Security, an offline sync queue, and Recharts progress analytics.
Next.js 14 · TypeScript · Supabase · Zustand · Recharts · Tailwind
I'm actively looking for full-time Software Engineering roles. If you think I'd be a good fit for your team, I'd love to hear from you.