Hire the Best Apache Solr Developers
in Armenia

I have PhD in Theoretical and Mathematical Physics. I am co-author or author of about 20 scientific papers. My second specialization is Data Science along with Big Data. I have also solid experience in Big Data tools like: Apache Spark, Apache Solr, Kafka, HBase, HDFS, Hive and others. I used numerous machine learning algorithms during my career like: principal component analysis, self-organized maps, k-means, k-nearest neighbours and also linear models like simple linear regression. I developed an algorithm to predict time series data using linear regression and Holt-Winters models. In my professional career in Physics (Astrophysics) I calculated tidal perturbations of Lares/Lageos satellite, constructed long range Hubble diagram for gamma-ray bursts.

NOTE: Scammers and clients who are looking for charity, please don't waste my and your time! High-quality native iOS and Android, and Flutter apps wizard. I'm Oracle Certified Java developer with Master's degree in CS with 20 years of experience in developing not only Android and IOS projects, but also different projects that made me a great architect, complex issue solver and UX/Features improver in all aspects with experience in huge amount of libraries and frameworks such as Firebase, Parse, Spring, OpenAI and much much more. I'm the best in Android and iOS app development as I'm up to date with new technologies, features and tricks that Google team or Apple team announce. I have led all projects from scratch up to release with full understanding of OOP, SOLID, optimization, analisis and user experience. I'm proud of apps I made: Unfold, GuruShots, Frontstage, LiftDay, LiveMaster and others, so thanks to my clients that trusted me and gave me that opportunity. NOTE: Please do not be surprised by the large number of described technologies, that's even not all. 20 years is more than enough to be able to work with so many technologies! - Mobile: Android, IOS, Crossplatform(Flutter). - Android(All): Java, Kotlin, Dart(Flutter). - iOS: Swift, Dart(Flutter). - Backend: Spring Boot, Grails/Groovy, XML, JSON, REST, XSL/XSLT. - DB: SQLite, Oracle, MySQL, DB2, PL/SQL, XMLDB, PostgreSQL. - Severs: Jetty, Tomcat, Apache, IBM Websphere, Parse server. - Libraries and Frameworks: Firebase(All), Gradle, Spring-Android, RoboSpice, Retrofit, ORMLite, Google Services SDK, iOS Extensions, Square libraries, CocoaPods, Parse SDK, Backendless, Layer SDK, AfNetworking, Alamofire, Hearst-DD/ObjectMapper, Facebook SDK, Twitter SDK, Instagram Kit, Flurry SDK, GoogleAppIndexing, Grails, Spring, Struts/Struts2, JPA, Jespa, Hibernate, Ant, Web Services, JMS, JUnit, pi4j(Raspberry Pi, Orange Pi), FFMPEG, DexProtector, Flutter, Bloc, Riverpod, Lottie, Giphy, Algolia, Mapbox, Hive, Spotify, Freezed, RXDart, OpenAI. -Tools: Git, SVN, Intellij Idea, XCode, Android Studio, Jira, YouTrack, Zeplin, Sketch, Figma, Bitrise, Github Actions, Codemagic. -Methodologies: Scrum, Kanban. - Experienced in apps that included: Social, Chat, IM Messaging, Map, Filtering, Search, E-commerce, In-app billing/purchases, Store, Fitness, Photos, Videos, Voice, Processing, Recording, Player, Event, Backup, Image, Contacts, Calendar, Share, Push, Interactive, Notifications Content / Service extension, OBB, Expansion, Deep link, Navigation, Animation, Crop, File, Upload, JSON, REST, API, Library/Gallery, Paging, Storyboard, Support multiple screen sizes, Full stack, Best practice code, Convention, OOP, Play Store, Itunesconnect, TestFlight, OpenAI, AI integration, ChatGPT.

AI Engineer Who Ships Production Systems | ex-clients Netflix, SAP, Adidas Your AI project is stuck between "impressive demo" and "actually works in production." The integration is fragile. The RAG pipeline hallucinates on real data. Costs are climbing faster than value. And every week it stays in this state, the business case gets harder to defend. You don't need another AI enthusiast who learned LangChain last year. You need an engineer who's been building scalable systems for over a decade — and who's shipped 10+ AI systems that are running in production right now, not sitting in a graveyard of abandoned pilots. I'm Vahe. I build production-grade AI systems as a lead AI engineer with 10+ years of engineering experience for companies like Netflix, SAP, Adidas, Liberty Mutual, EPAM, and EBSCO. Here's what I've built and shipped: 👉 Multi-agent orchestration systems — production workflows where multiple AI agents coordinate end-to-end: triaging incoming requests, routing to specialized agents, executing actions, and self-correcting when something breaks. Not a demo chain of prompts — real systems with fallback logic, cost controls, and observability built in. 👉 RAG pipelines that survive real data — retrieval-augmented generation systems that handle messy, contradictory, and incomplete enterprise documents without hallucinating. Semantic search with hybrid retrieval, re-ranking, and grounded citation — built to scale, not to impress in a controlled test. 👉 Intelligent document processing — AI-powered extraction, classification, and routing of complex documents at scale. Invoices, contracts, medical records, regulatory filings — structured output from unstructured chaos, with confidence scoring and human-in-the-loop where it matters. 👉 AI-powered chatbots and assistants — customer-facing and internal conversational systems that handle real conversations, not scripted happy paths. Context management across long sessions, graceful escalation to humans, and integration with existing business systems. Why most AI projects fail — and why mine don't: The dirty secret of AI engineering is that the AI is the easy part. 90% of making these systems work in production is everything underneath: architecture that handles failure gracefully, error recovery that doesn't lose data, token optimization that keeps costs from exploding, security that protects sensitive data flowing through LLM APIs, and observability that tells you exactly what went wrong at 3 AM on a Saturday. That's not something I learned to do for AI. That's what I've been doing my entire career as a senior engineer. AI just gave me a new class of problems to solve with the same engineering discipline. My stack: AI & LLM: AI agent development, RAG systems, LangChain, LangGraph, context engineering, fine-tuning, OpenAI API, Claude API, OpenClaw, vector databases (Pinecone, ChromaDB), MCP integration Infrastructure: AWS (Certified Solutions Architect), Docker, CI/CD, PostgreSQL, Python, Java, Go What happens when you message me: I'll set up a free 30-minute architecture review call. You tell me what you're building — or what's broken. I'll tell you exactly where the risks are, what's going to cause problems at scale, and where AI-driven workflows could save you the most time and money. No pitch, no slides. Just a technical conversation between engineers about how to make your system work. If it makes sense to work together, I'll scope the engagement and we start building. If it doesn't, you still walk away with a clearer picture of your AI architecture — on me.

Experienced PHP Developer with a demonstrated history of working in the information technology and services industry. Skilled in PHP CMSs , such as Drupal and WordPress Development. Strong engineering professional with a Bachelor of Applied Science - BASc focused in Computer and Information Sciences, General from Yerevan State University.

Moodle & LMS expert with 13+ years building enterprise e-learning platforms for ZOOM, Deutsche Telekom, Bayer, and Wellesley College. I lead SmartApp and our Moodle-focused division UpMoodle — a team of 50+ engineers specializing in LMS and custom digital products. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🏆 TRACK RECORD ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✔️ Top Rated Plus — top 3% on Upwork ✔️ 100% Job Success Score — 80+ completed projects ✔️ 13,900+ hours logged ✔️ 98% returning clients ✔️ Longest Upwork contract running since 2018 ✔️ Active on Upwork since 2014 — 10+ years of consistent ratings ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🎓 MOODLE & LMS DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Top 1% Moodle developer on Upwork. My team and I have delivered: - Full Moodle platform development for enterprise & SMB — from LMS setup to multi-site corporate training environments - White-labeled multi-tenant Moodle installations - Custom plugin and theme development (Mustache, PHP, Twig) - SCORM, xAPI, H5P, Articulate Storyline, Articulate Rise, Easygenerator - Migrations across Moodle 2.x → 3.x → 4.x → 5.x (and cross-LMS migrations) - LTI 1.3, SAML SSO, OAuth2, custom certificates, badges, gamification - Integrations with Salesforce, HubSpot, Eloqua, Accredible, Clever, Crowdin - Moodle + LLM integrations (AI tutors, automated course generation, RAG) - LearnDash, Canvas, Blackboard, Open edX, TalentLMS, Docebo as alternatives - Authors of moodle-local_reactjs (open-source plugin for headless Moodle + React) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🏢 INDUSTRIES WE SERVE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Corporate L&D and employee training, compliance training for regulated industries (healthcare, finance, pharma), higher education, SaaS customer education, non-profits and NGOs. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🛒 E-COMMERCE: SHOPIFY & WOOCOMMERCE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Certified Shopify App Developer. Shopify and Shopify Plus store setup, custom public and private apps, Liquid theming, Shopify Functions, metafields/metaobjects, checkout customization, headless Shopify with Hydrogen, third-party integrations (Stripe, Klaviyo, ERP, CRM). ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🌐 WORDPRESS & DRUPAL ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 10+ years WordPress: custom themes, plugins, WooCommerce, multisite, headless WordPress. 13+ years with Drupal (from Drupal 7 through Drupal 11, ready for Drupal 12): custom modules with modern OOP, Drush, Acquia / Pantheon / platform.sh deployments. Deep experience with legacy Drupal 7 → Drupal 10/11 migrations. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🤖 AI INTEGRATION ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ LLMs, RAG, agentic AI embedded into existing platforms. We integrate OpenAI, Anthropic Claude, and open-source models into LMS, e-commerce, and internal tools. AI chatbots and AI agents for customer support and learner assistance. AI-powered course content with Synthesia, HeyGen, and Veo. Recent case: AI system for processing large enterprise documentation (Google Generative AI + Chroma DB + Python + GCP). ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 👥 DEDICATED TEAM: TECH PARTNERSHIP MODEL ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ For clients who need more than one developer, we become their external tech department. Example: for WorkFusion we built their marketing site, partner portal, LMS, and documentation platform over several years as their long-term tech partner. If you need ongoing capacity — developers, designers, PMs — we can staff it. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ If this sounds like what you need, for a single task or a long-term partnership, message me with a short description of your project. I usually reply within a few hours.

Hello there! I'm Gerda Hakobyan, a wordsmith with a flair for bringing lifestyle stories to life. From captivating blogs that transport you to new worlds to snappy social media snippets that spark conversations, I craft content that resonates. Let me be your guide through the realms of fashion, wellness, and everything in between. Join me on this journey, where every word is an invitation to explore the richness of everyday life.