Available for new opportunities

Hi, I'mAyush Raj

{Full-Stack Engineer}

Full-stack software engineer with 4+ years of experience designing and delivering scalable backend services, responsive frontend interfaces, and AI-powered solutions. Proficient in Java, TypeScript, Python, Angular, and Spring Boot, with hands-on expertise in RESTful API development, Kubernetes orchestration, and CI/CD pipelines. Proven track record of integrating AI and automation tools to enhance application performance, streamline workflows, and improve user experience. Experienced in collaborating across cross-functional teams to define quality standards, conduct code reviews, and mentor junior developers.

+91-8800604354caix.inIndia
Years shipping
4+

Years shipping

Projects built
9

Projects built

Companies
3

Companies

Tech domains
7

Tech domains

01 · Skills

My Toolkit

/Languages07

JavaTypeScriptPythonJavaScriptNodeJSKotlinGo

/Frontend08

AngularReactNext.jsTailwind CSSHTMLCSSAjaxjQuery

/Backend07

Spring BootFastAPIEncore.tsRESTful APIsGraphQLWebSocketMicroservices

/AI / ML06

LangGraphRAGLLM IntegrationLangChainEmbeddingsSemantic Search

/Databases07

MySQLMongoDBPostgreSQLMariaDBYugabyteRedisSQLite

/Cloud & DevOps08

AWSOCIGCPKubernetesDockerCI/CDJenkinsGitLab CI

/Tools & Testing07

GitAndroid StudioRobot FrameworkSeleniumPrometheusGrafanaMaven
JavaTypeScriptPythonJavaScriptNodeJSKotlinGoAngularReactNext.jsTailwind CSSHTMLCSSAjaxjQuerySpring BootFastAPIEncore.tsRESTful APIsGraphQLWebSocketMicroservicesLangGraphRAGLLM IntegrationLangChainEmbeddingsSemantic SearchMySQLMongoDBPostgreSQLMariaDBYugabyteRedisSQLiteAWSOCIGCPKubernetesDockerCI/CDJenkinsGitLab CIGitAndroid StudioRobot FrameworkSeleniumPrometheusGrafanaMavenJavaTypeScriptPythonJavaScriptNodeJSKotlinGoAngularReactNext.jsTailwind CSSHTMLCSSAjaxjQuerySpring BootFastAPIEncore.tsRESTful APIsGraphQLWebSocketMicroservicesLangGraphRAGLLM IntegrationLangChainEmbeddingsSemantic SearchMySQLMongoDBPostgreSQLMariaDBYugabyteRedisSQLiteAWSOCIGCPKubernetesDockerCI/CDJenkinsGitLab CIGitAndroid StudioRobot FrameworkSeleniumPrometheusGrafanaMaven

02 · Experience

Where I've Worked

Software Engineer

Rakuten Mobile · Sourcefuse Technologies payroll

Jan 2025 – Present
  • Lead development across release and lifecycle management, enterprise automation, and AI-powered testing projects at RSI Bangalore.
  • Built Surudoi, an AI testing framework that turns plain-English test cases into executable scenarios, making coverage accessible to non-technical stakeholders.
  • Developed Petri AI Chat and agentic RAG assistants with streaming interfaces, hybrid retrieval, LangGraph, FastAPI, Angular, Kubernetes, and local LLM deployment.

Software Engineer

Orange Business

Jun 2024 – Dec 2024
  • Built and maintained scalable RESTful backend services and responsive frontends in a large enterprise platform.
  • Integrated AI and automation tooling to improve application performance and streamline workflows.
  • Collaborated cross-functionally to define quality standards, conduct code reviews and mentor junior developers.

Associate Software Engineer

Orange Business

Jun 2022 – Jun 2024
  • Developed an end-to-end web automation framework where test cases written in Excel run through GitLab CI/CD daily — results posted to JIRA, Confluence and Mattermost, with service and network monitoring plus anomaly alerting.
  • Owned frontend development for the Netstore platform and contributed to its Java backend and a Python API library.
  • Won the 2024 company-wide hackathon with a Neo4j-based visualization of Git repos, Helm charts and their relationship matrices.

Web Developer Intern

Strategic Engagement & Event Solutions

Nov 2021 – Mar 2022
  • Designed and implemented web interfaces for client projects.
  • Gained hands-on experience with core web technologies and delivery workflows.

03 · Projects

Things I've Built

Darwin

Self-hosted AI research assistant that chats with uploaded documents. Hybrid RAG pipeline combining FAISS vector search with SQLite FTS5 BM25 lexical search, Reciprocal Rank Fusion and cross-encoder reranking. Agentic tool-calling loop, multi-format ingestion, BYO LLM, SSE streaming, Docker-first.

Darwin Platform (CAIX)

Full-stack platform powering caix.in — Encore.ts backend with Angular 19 SSR frontend. WebAuthn passkeys & MFA, Socket.IO real-time, encrypted media vault with TUS resumable uploads, SFU video conferencing (mediasoup), multi-provider AI chat, cloud code editor, notebook AI Q&A, MinIO storage.

DarwinHub

Collection of Android apps and games — 2048, Snakes & Ladders, Ludo, Minesweeper, BlockMania, TicTacToe, plus Wear OS watch faces (Atlas, Orion), a privacy-focused browser with ad-blocking, and a randomizer suite.

Xturn

STUN & TURN server written in Go in ~1,350 lines with zero dependencies outside the standard library. Implements RFC 5389 & 8656 over UDP, TCP and TLS, IPv6 relaying, TURN REST API auth, per-user allocation quotas and bandwidth rate limiting.

RAG Assistant

Agentic RAG assistant — FastAPI + LangGraph backend with Angular 21 streaming chat. Hybrid FAISS + BM25 retrieval fused via RRF, cross-encoder reranking, two-tier semantic caching, pluggable skill engine, CSV/SQLite analytics, secure Python sandbox, DOCX/PDF/PPTX/XLSX generation, JWT auth, Kubernetes deployment.

Filo

One place for every PDF and image operation — merge, split, compress, convert, OCR, resize, crop, watermark and upscale. Tools chain into reusable workflows. Angular 18 SSR frontend with Encore.ts backend, Socket.IO job progress, Redis queues and MinIO/S3 storage.

Registry Console

Management console for a Docker Registry 2.8.1 instance — public landing page plus password-locked admin UI. Lists and filters repositories and tags, shows OCI manifest metadata, copies pull commands and deletes manifests. Credentials held in backend memory behind HttpOnly cookies.

Sentry

Live Docker monitoring dashboard — React frontend, Go backend, Server-Sent Events for container stats and logs. Central server with remote agents over mTLS or shared tokens, self-signed agent certs, alert configuration and swarm awareness.

Windows Remote Controller

Python + web application to remotely control and monitor Windows devices. Logs keystrokes, user activity and system info to a web app; containerized stack with Nginx, NodeJS backend, Angular frontend, MongoDB, Grafana and Prometheus on Oracle Cloud. Passkeys, WebRTC, WebSocket and MFA auth. Live at caix.in.

04 · Awards

Recognition

Hackathon Winner

Team-level win at Orange Business, 2024.

Certificate of Excellence

Amazon Alexa workshop, IIT BHU.

OCI Foundations Certified

Oracle Cloud Infrastructure Foundations 2021.