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Experienced Python Developer with 5+ years of experience delivering high-performance backend architectures, SaaS solutions, intelligent automation systems, and AI-driven applications using Django, FastAPI, and industry-leading Python technologies. Core Expertise & Technology Stack ============================= 𝗔𝗜 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴, 𝗟𝗟𝗠𝘀 & 𝗚𝗲𝗻𝗲𝗿𝗮𝘁𝗶𝘃𝗲 𝗔𝗜 Extensive experience building AI-powered applications using OpenAI (GPT-4/4o), Claude, Gemini, Llama, DeepSeek, Qwen, Mistral, and Hugging Face. Skilled in fine-tuning, embeddings, vector search, model orchestration, MCP, function calling, and custom AI workflows. 𝘼𝙄 𝘼𝙜𝙚𝙣𝙩𝙨 & 𝘼𝙪𝙩𝙤𝙣𝙤𝙢𝙤𝙪𝙨 𝙎𝙮𝙨𝙩𝙚𝙢𝙨 Design and development of intelligent agent ecosystems using LangGraph, LangChain, CrewAI, AutoGen, OpenAI Agents SDK, Hermes, Mastra, and PydanticAI. Expertise in multi-agent architectures, tool integration, agentic workflows, AI copilots, and autonomous decision-making systems. 𝘼𝙄 𝙋𝙧𝙤𝙙𝙪𝙘𝙩𝙨 & 𝙎𝙖𝙖𝙎 𝘿𝙚𝙫𝙚𝙡𝙤𝙥𝙢𝙚𝙣𝙩 Building production-ready AI applications with Vercel AI SDK, Next.js, streaming AI interfaces, conversational assistants, and scalable AI SaaS platforms. 𝗥𝗔𝗚, 𝗦𝗲𝗮𝗿𝗰𝗵 & 𝗞𝗻𝗼𝘄𝗹𝗲𝗱𝗴𝗲 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 Implementation of Retrieval-Augmented Generation (RAG) systems using LlamaIndex, Haystack, Pinecone, Weaviate, Qdrant, ChromaDB, and FAISS. Experienced in semantic search, hybrid retrieval, knowledge graphs, and enterprise knowledge systems. 𝗩𝗼𝗶𝗰𝗲 𝗔𝗜 & 𝗖𝗼𝗻𝘃𝗲𝗿𝘀𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 Development of real-time voice applications using LiveKit, Vapi, Retell AI, Bland AI, ElevenLabs, and Whisper. Expertise in AI voice agents, speech recognition, text-to-speech, IVR automation, and conversational workflows. 𝗕𝗿𝗼𝘄𝘀𝗲𝗿 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 & 𝗔𝗜 𝗔𝗴𝗲𝗻𝘁𝘀 Creating autonomous browser agents and computer-use systems with Browser Use, Stagehand, web automation frameworks, and intelligent workflow orchestration. 𝘼𝙄 𝙈𝙤𝙣𝙞𝙩𝙤𝙧𝙞𝙣𝙜 & 𝙊𝙥𝙩𝙞𝙢𝙞𝙯𝙖𝙩𝙞𝙤𝙣 Experience with LangSmith, LangFuse, Arize Phoenix, prompt evaluation, LLM observability, AI analytics, and performance monitoring for production AI systems. 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐓𝐡𝐢𝐫𝐝-𝐏𝐚𝐫𝐭𝐲 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 Building automated business workflows using n8n, Zapier, Make, REST APIs, Webhooks, Twilio, WhatsApp API, HubSpot, Salesforce, and custom CRM/ERP integrations. 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 & 𝐂𝐥𝐨𝐮𝐝 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 Strong background in Python, FastAPI, Django, Node.js, Docker, AWS, GCP, Azure, LiteLLM, Ollama, vLLM, microservices, scalable APIs, and serverless architectures. 𝙁𝙧𝙤𝙣𝙩𝙚𝙣𝙙 𝘿𝙚𝙫𝙚𝙡𝙤𝙥𝙢𝙚𝙣𝙩 Modern web application development using React, Next.js, TypeScript, and Vercel, focused on high-performance and user-friendly interfaces. 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 & 𝗗𝗮𝘁𝗮 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 Proficient with PostgreSQL, MongoDB, Redis, Supabase, ETL pipelines, real-time data processing, analytics systems, and large-scale data architectures. If you need a developer who can create a strong backend foundation and connect it properly with a modern frontend, I’d be happy to help. #Python #PythonDeveloper #Coding #Programmer #SoftwareDeveloper #DeveloperLife #CodingLife #DevCommunity #Programming #CodingJourney #DeveloperSkills #CareerInTech #Upskill #OpenToWork #JobSearch #Django #Flask #WebDevelopment #BackendDeveloper #FullStackDeveloper #DataScience #MachineLearning #AI #DeepLearning #DataAnalytics #Pandas #TensorFlow #PyTorch #Automation #Scripting #PythonScripts #DevOps #AutomationTesting #Git #GitHub #Docker #APIs #RESTAPI #SQL #Linux #CloudComputing #AWS #Azure #CodeSnippet #TechCommunity #ProgrammingTips #StackOverflow #OpenSource #BuildInPublic

I ship production code faster using Claude Code as my primary development tool. Every project I deliver, from backend APIs to full-stack web apps, is built through an AI-native workflow (Claude Code Max Plan, GitHub Copilot, Warp AI) that lets me move at the pace of a small team while maintaining 80%+ test coverage and CI/CD from day one. Currently building AI-powered services for two Fortune 500 companies: an actuarial data processing API (FastAPI, Azure DevOps) for a global reinsurance firm, and cloud infrastructure for a major insurer's 10,000-employee desktop migration (Azure VDI, Terraform). WHAT I DELIVER AI Agents & LLM Systems: Built a multi-scope contextual memory platform for autonomous AI sales agents using FastAPI, AWS Bedrock, OpenSearch Serverless, and LangChain. RAG pipelines, vector search, prompt engineering, embeddings, and deploying LLMs to production with proper error handling and monitoring. OpenAI, Claude API, Deepgram, and AWS Bedrock integration. I build agents that persist memory, learn user style, and operate autonomously. Full-Stack AI Development: MERN stack, Spring Boot (Java 21), Python (FastAPI, Django), Next.js, React Native. From database schema to deployed frontend, I own the entire stack so you coordinate with one person instead of three. Built and maintain FocusHive (focushive.app), a live multi-service platform with Spring Boot microservices and a Next.js frontend. 1,376+ tests across my Stripe integration toolkit alone. Claude Code & AI-Native Workflow: Claude Code Max Plan is my daily driver for architecture decisions, complex refactoring, TDD, and debugging. Combined with GitHub Copilot and Warp AI, I deliver at a velocity that typically requires a 2-3 person team. This isn't a gimmick; it's how I maintain quality at speed across 59 delivered contracts. DevOps & Cloud: Azure DevOps pipelines, Docker, GitHub Actions, Terraform. Designed hub-spoke Azure infrastructure with ExpressRoute, Firewall rules, and multi-region DR for an enterprise migration. Multi-environment deployments with monitoring and automated rollbacks. MLOps: Production NLP pipeline processing 1,000+ daily messages with OpenAI + VADER fallback, delivering 60% reduction in manual moderation and 70% cost savings. Experience with AWS Bedrock inference, embedding pipelines, vector database management (OpenSearch, Pinecone, Chroma), and model monitoring. BEST FIT FOR - Teams that want an AI-native developer who ships fast with Claude Code - Companies building AI agents, RAG systems, or LLM integrations - Enterprise API development with compliance requirements (GDPR, SOX, HIPAA) - SaaS product development from database to deployment Available 30-40 hours/week for dedicated engagements. Timezone: IST (UTC+5:30), flexible overlap with US/EU/Canadian hours.

𝐓𝐎𝐏 𝐑𝐀𝐓𝐄𝐃 𝐒𝐄𝐍𝐈𝐎𝐑 𝐁𝐀𝐂𝐊𝐄𝐍𝐃 𝐄𝐍𝐆𝐈𝐍𝐄𝐄𝐑 𝐀𝐍𝐃 𝐀𝐆𝐄𝐍𝐓𝐈𝐂 𝐀𝐈 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐄𝐑 𝐅𝐎𝐂𝐔𝐒𝐄𝐃 𝐎𝐍 𝐁𝐔𝐈𝐋𝐃𝐈𝐍𝐆 𝐏𝐑𝐎𝐃𝐔𝐂𝐓𝐈𝐎𝐍-𝐆𝐑𝐀𝐃𝐄 𝐒𝐘𝐒𝐓𝐄𝐌𝐒, 𝐀𝐏𝐈𝐒, 𝐀𝐍𝐃 𝐀𝐈-𝐃𝐑𝐈𝐕𝐄𝐍 𝐀𝐏𝐏𝐋𝐈𝐂𝐀𝐓𝐈𝐎𝐍𝐒. I am responsible for delivering features end-to-end, defining execution plans, and maintaining systems under real production load. Work includes backend development, system design, and architecture decisions that hold up over time. 𝐂𝐨𝐫𝐞 𝐬𝐭𝐚𝐜𝐤: Python, Node.js, RAG, LLM, Automation, TypeScript, JavaScript. Focus on scalable systems, high-performance applications, and maintainable code. 𝐖𝐇𝐀𝐓 𝐈 𝐂𝐀𝐍 𝐇𝐄𝐋𝐏 𝐘𝐎𝐔 𝐖𝐈𝐓𝐇? ▸ 𝐁𝐀𝐂𝐊𝐄𝐍𝐃 / 𝐏𝐘𝐓𝐇𝐎𝐍 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 ✓ Python Developer with experience in Django, Flask, and FastAPI. ✓ Building REST APIs, microservices, async systems, and data pipelines. ✓ Experience with Celery, background processing, ETL workflows, and data processing systems. ✓ Focus on performance, clean architecture, and long-term maintainability. ▸ 𝐁𝐀𝐂𝐊𝐄𝐍𝐃 𝐍𝐎𝐃𝐄.𝐉𝐒 / 𝐉𝐀𝐕𝐀𝐒𝐂𝐑𝐈𝐏𝐓 ✓ Node.js Developer using TypeScript and Express.js. ✓ Backend API development, server-side applications, and event-driven architecture. ✓ Designing services that handle real-world load, failures, and edge cases. ▸ 𝐀𝐈 𝐀𝐆𝐄𝐍𝐓 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 ✓ AI Agent architecture — LangChain, LangGraph, CrewAI, AutoGen, custom orchestration ✓ RAG systems — Pinecone, Weaviate, MongoDB Atlas Vector, pgvector, hybrid search, reranking ✓ LLM layer — OpenAI (GPT-4o / o1), Anthropic Claude, Gemini, open-source via Ollama / vLLM ✓ MCP servers — custom Model Context Protocol integrations for Claude Desktop and custom clients ✓ Automation — n8n, Make, Zapier, custom Python workers ✓ Eval & guardrails — LangSmith, Ragas, Arize, prompt and output evaluation pipelines ▸ 𝐅𝐔𝐋𝐋 𝐒𝐓𝐀𝐂𝐊 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 ✓ Full Stack Developer working with React and Next.js. ✓ Building web applications, dashboards, and frontend integrations connected to backend systems. ✓ SPA development and UI integration with APIs. ▸ 𝐃𝐀𝐓𝐀𝐁𝐀𝐒𝐄𝐒 / 𝐈𝐍𝐅𝐑𝐀𝐒𝐓𝐑𝐔𝐂𝐓𝐔𝐑𝐄 ✓ PostgreSQL, MongoDB, Redis, Elasticsearch ✓ Database design, query optimization, indexing, high-load systems ✓ S3, SQS, Lambda, Athena, DynamoDB, EKS, Kinesis, Bedrock, CloudFront ✓ Docker, Kubernetes (Helm + ArgoCD), Terraform for IaC ✓ Datadog APM, OpenTelemetry, Sentry ✓ Qdrant, AWS OpenSearch for semantic search and RAG retrieval ✓ CI/CD, Kubernetes, serverless, Azure, Google Cloud 🤝 𝐋𝐞𝐭’𝐬 𝐁𝐮𝐢𝐥𝐝 𝐘𝐨𝐮𝐫 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭 𝐎𝐫 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐒𝐲𝐬𝐭𝐞𝐦 If you're looking for Backend or AI Agent Developer to ship your next Full Stack, AI Agent, RAG system, or AI SaaS product, send me your docs or a short brief. I'll reply within 1 hour with an architecture sketch and a realistic delivery timeline.

I help medical and IoT product teams design the right hardware architecture early, so they avoid costly PCB re-spins, noise issues, and late-stage failures. If you’re building a sensor-heavy, STM32-based, or medical-adjacent product, I act as your hardware systems architect—focusing on design decisions, trade-offs, and long-term reliability, not just execution. How I typically help: • System architecture & feasibility studies • Component and topology selection (MCU, sensors, AFE, power) • Schematic-level hardware design & review • Pre-fabrication PCB audits to reduce redesign risk My work is decision-driven and outcome-focused. I start by understanding what you are building and why, then provide clear, documented recommendations you can confidently execute or manufacture. I’ve worked on medical electronics, bio signal front ends (ECG/EMG), wearables, and IoT devices, where design mistakes are expensive and timelines matter. If you’re looking for clarity, strong architecture, and fewer hardware surprises, I’d be glad to help. ✅ Core Expertise 🔹 Hardware Product Development - Architecture Design, Schematic & Layout (up to 12-layer PCBs) - Rigid, Rigid-Flex & Flex PCB Design - Signal & Power Integrity, EMI/EMC mitigation - DFM/DFT, FMEA, Risk Analysis, Certification Prep - BOM optimization, part lifecycle, obsolescence management 🔹 Sensor-Integrated Wearables & IoT - Real-time biometric sensing (ECG, EMG, HR, SpO2, Temp, IMU) - Wireless: BLE, Wi-Fi, LoRa, 4G, CAN, RS485 - Medical-grade signal acquisition & conditioning - Battery management, power efficiency & charging circuits 🔹 Prototyping & Compliance - Pre-compliance testing: EMI/EMC, Thermal, Vibration - Regulatory: Medical safety (IEC standards), ISO/NABL - Detailed documentation: test plans, architecture diagrams, handover packages 🔹 Tools & Platforms - ECAD: Altium Designer, OrCAD, CAM350, KiCAD - Firmware Platforms: STM32, Nordic nRF52, ESP32/8266, Microchip, Raspberry Pi - Protocols: I2C, UART, SPI, RS232/RS485, LVDS, RF, NFC ✅ Deliverables - Design Concept Block Diagrams - Process Flow Block Diagrams - Schematic PDF - Design Files (Schematic & Layout) - Fabrication Files - Assembly Files - Bill of Materials - 3D Models - Components Library - Test Documents (If req.) 🏆 Notable Projects & Solutions Built - Smart Drug Delivery Device: Precision-controlled insulin injector - Bone Density Meter: Early-diagnosis medical scanner - Julia Robot: Cooking automation system with embedded sensors - EMG Wearable: Portable diagnostic device for muscle activity monitoring - SOWBIT: Veterinary health monitor (ECG, SpO2, Temp) for livestock - Smart Ring: Measures multiple vitals via fingertip contact - Elite Alerte: Maritime emergency alert & sensing system - CloudSwitch: IoT-enabled wireless AC meter for remote energy tracking - Fuel Level Sensor (Ultrasonic + GSM): Real-time monitoring for containers - PoE Switch & Weighing Scale: Industrial-grade, high-precision electronics 🌍 Why Clients Choose Me ✅ Medical-grade design focus with regulatory foresight ✅ Deep cross-industry experience from wearables to industrial controls ✅ Excellent communication, proactive updates, and engineering documentation ✅ Efficient collaboration with global clients and vendors ✅ Quality-first mindset with long-term reliability and support

Struggling to launch high-quality mobile apps on time? I am, an Upwork 𝐄𝐱𝐩𝐞𝐫𝐭-𝐕𝐞𝐭𝐭𝐞𝐝 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 with 𝟖+ 𝐲𝐞𝐚𝐫𝐬 in React Native, delivering over 𝟑𝟎 𝐬𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥 𝐚𝐩𝐩𝐬 on the App Store and Play Store that drive user engagement and business growth. 📱 𝐇𝐎𝐖 𝐈 𝐂𝐀𝐍 𝐇𝐄𝐋𝐏 𝐘𝐎𝐔 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 ✓ Build high-performance, cross-platform apps for iOS and Android with React Native expertise. 𝐀𝐩𝐩 𝐒𝐭𝐨𝐫𝐞 & 𝐏𝐥𝐚𝐲 𝐒𝐭𝐨𝐫𝐞 𝐏𝐮𝐛𝐥𝐢𝐬𝐡𝐢𝐧𝐠 ✓ Seamless deployment and release management to get your app live on both major platforms. 𝐂𝐮𝐬𝐭𝐨𝐦 𝐀𝐏𝐈 & 𝐅𝐢𝐫𝐞𝐛𝐚𝐬𝐞 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 ✓ Connect your app with robust APIs and Firebase for real-time data and push notifications. 𝐔𝐈/𝐔𝐗 𝐃𝐞𝐬𝐢𝐠𝐧 𝐈𝐦𝐩𝐥𝐞𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧 ✓ Transform Figma designs into intuitive, responsive mobile interfaces. 𝐂𝐈/𝐂𝐃 & 𝐖𝐡𝐢𝐭𝐞-𝐥𝐚𝐛𝐞𝐥 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 ✓ Automate app builds and deliver reusable white-labeled React Native apps tailored to your brand. ============================ 🌟 𝗪𝗛𝗔𝗧 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗦𝗔𝗬 🌟 ❝Successfully completed a super complicated hiring assessment involving native OS functions with a good turnaround time and good quality!❞ – Bogdan Tenea, GT School ❝Satya is a great Developer with hands-on experience in React Native. We've enjoyed working with him.❞ – Sofia Marjanovic, Product Manager ❝Working with Satya was great. He helped us move forward with our Project.❞ – Julia Weigel, Bright Solutions 🏆 Expert-Vetted Mobile App Developer on Upwork 🎖 Upwork Skill Certification - Javascript Front-End Development ============================ ============================ 🤝 𝗟𝗘𝗧'𝗦 𝗕𝗨𝗜𝗟𝗗 𝗬𝗢𝗨𝗥 𝗡𝗘𝗫𝗧 𝗠𝗢𝗕𝗜𝗟𝗘 𝗔𝗣𝗣 Have a mobile app idea or need expert React Native development? 𝗠𝗲𝘀𝘀𝗮𝗴𝗲 𝗺𝗲 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝘁𝗼𝗱𝗮𝘆 for a free consultation and start turning your vision into reality. I typically respond within 6 hours and prioritize timely communication. ============================ 🛠️ 𝐓𝐎𝐎𝐋𝐒 & 𝐓𝐄𝐂𝐇𝐍𝐎𝐋𝐎𝐆𝐘 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 • React Native • Objective-C • Java • Expo • Yarn 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐬𝐢𝐠𝐧 • Figma 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 • Firestore • Supabase • MySQL • MongoDB 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐏𝐈𝐬 • Node.js • GraphQL • API Integration • API Development 𝐎𝐭𝐡𝐞𝐫 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 • Firebase • Redux • Push Notifications 𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 • CI/CD • App Store Publishing • Play Store Publishing • White-labelling React Native apps React Native, Mobile App Development, iOS Development, Android App Development, Firebase, API Integration, JavaScript, CI/CD, Expo, Mobile App Design

Senior Backend Engineer | Node.js • NestJS • TypeScript I am a Senior Backend Engineer with over 6 years of experience building, scaling, and operating production systems across Fintech, E-commerce, Enterprise ERP, and AI platforms. I specialize in turning complex business requirements into high-performance, maintainable microservice architectures. 🚀 My Expertise Includes: - Architectural Leadership: Led a zero-downtime migration of a legacy Visual Basic ERP to a NestJS and Oracle architecture for a NASDAQ-listed US company (inventory, rentals, warehouse, logistics, barcode, real-time sync, high-speed catalog search). - Performance Engineering: Reduced API latency by 90-92% (from around 1.5s down to 50-150ms) through database indexing, schema design, and query optimization, and cut infrastructure cost by 50%+ via database normalization and server tuning. - High-Throughput Systems: Built background job pipelines processing 10,000+ jobs every 10 minutes and 600,000 to 700,000 jobs per hour at near-zero error rate using Laravel Horizon. - Financial Systems: Integrated major payment gateways (Stripe, Stripe Connect, Razorpay, Actum ACH, Cosmo, NetBilling, PayPal) with subscription billing and marketplace payouts, and built backend for StockPe, a fintech platform serving 300,000+ users, ranked #2 Product of the Day on Product Hunt. - Integration & Scaling: Integrated 3rd party services (Twilio, SendGrid, Brevo, OpenAI, Gemini) and scaled a live creator platform to roughly 50,000 concurrent users on AWS. - AI Systems: Built the backend and multi-agent orchestration for KitchenCloud.AI, routing requests across 6 specialized sub-agents on NestJS with vector search and persistent memory. - Infrastructure & DevOps: Docker, serverless (AWS Lambda), AWS (EC2, S3, SQS, IVS, MediaConvert), DigitalOcean, and Vercel with zero-downtime deployments and CI/CD. 🛠 Technical Stack: - Languages: TypeScript, Node.js,JavaScript, PHP. - Frameworks: NestJS (Expert), Express.js, Laravel. - Databases: PostgreSQL, Oracle, MySQL, MongoDB, Redis, DragonflyDB. - Messaging & Real-Time: Kafka, RabbitMQ, BullMQ, Laravel Horizon, Socket io, gRPC, Event-Driven Architectures. 📊 Notable Achievements: - Reduced API latency by 90-92% (from around 1.5s to 50-150ms) through indexing, schema design, and query optimization. - Processed 600,000 to 700,000 background jobs per hour (10,000+ every 10 minutes) at near-zero error rate. - Cut infrastructure cost by 50%+ through database normalization and server optimization. - Delivered a zero-downtime Visual Basic to NestJS + Oracle ERP migration for a NASDAQ-listed company. - Built backend for a fintech serving 300,000+ users (StockPe, #2 Product of the Day on Product Hunt). - Top Rated Plus on Upwork with 100% Job Success and 2,215+ hours billed. I thrive in remote, high-ownership environments and care about clean, maintainable code that holds up in production and aligns with long-term business goals. Let's build scalable backend systems that help your business grow.