Greetings! I am an experienced web developer with over 6 years of expertise in creating modern, responsive, and functional web applications for small and medium-sized businesses and also fixing and improving working applications. I strive to deliver high-quality digital solutions tailored to the unique needs of each client. - I carefully listen to clients, strive to understand their business processes and goals, to offer the most effective solution. - I believe communication is the key factor for a successful project. I regularly provide status updates and promptly respond to inquiries. - Adhering to high code standards, conducting thorough testing before deployment to ensure stable and error-free applications. - Keeping up with new technologies and trends. Participating in professional conferences and exploring new tools to enhance my work efficiency. I am ready for new challenges and eager to collaborate on projects that will bring success to your business. Feel free to reach out to me to discuss details and ask any questions.

🏆 Top-Rated Database Architect & Multi-Cloud Specialist with 16+ Years of Experience Delivered 50+ enterprise-scale database and cloud transformation projects across telecom, government, banking, retail, and transport industries, specializing in migrations, HA/DR architectures, and performance tuning for Oracle, PostgreSQL, MySQL, SQL Server, MongoDB, Redis and Apache Cassandra. I am a seasoned Database Architect and Cloud Specialist with over 16 years of experience, delivering high-impact solutions across telecom, government, banking, transport, and retail industries. My expertise spans multi-database ecosystems (Oracle, PostgreSQL, MySQL, SQL Server, MongoDB, Redis) with a strong focus on performance tuning, HA/DR architectures, and enterprise-scale migrations. Beyond databases, I bring deep experience in multi-cloud environments (OCI, AWS, Azure, GCP) and DevOps practices, leveraging Kubernetes, Docker, Ansible, Jenkins, and CI/CD pipelines to design and automate resilient, scalable infrastructures. Over the years, I have led critical modernization projects including Oracle RAC/Data Guard, PostgreSQL Patroni clusters, MySQL InnoDB clusters, SQL Server Always-On, and GoldenGate microservices replication, all aligned with compliance, cost optimization, and business continuity. I specialize in cloud-native architectures, database modernization, and containerized deployments, ensuring secure, high-performing, and future-ready platforms for enterprises across multiple sectors. 🔹 Database Expertise High Availability & DR: Oracle RAC/Data Guard/GoldenGate, PostgreSQL Patroni/repmgr/EFM, MySQL Group Replication/ClusterSet, SQL Server Always-On, MongoDB ReplicaSets & Sharding, Redis Sentinel & Cluster. Performance Tuning: Advanced SQL optimization, query indexing, connection pooling, and OS-level tuning (CPU, memory, I/O, networking). Clickhouse DB optimization and performance tuning. Migrations: End-to-end cross-platform migrations (SQL Server → Postgres/Oracle, MySQL → Snowflake/OCI/Azure, on-prem → multi-cloud). I have hands-on experience designing and implementing Oracle Fusion API integrations using Oracle Integration Cloud (OIC), connecting Fusion Cloud with multiple external systems. My work includes building and optimizing REST and SOAP-based services, handling complex data mappings, and improving integration performance and reliability. I’ve also maintained existing integrations to ensure high availability and seamless data flow while collaborating closely with cross-functional teams to identify needs, streamline workflows, and deliver well-documented, reusable integration solutions. Automation: Backup/recovery orchestration, PITR, monitoring, and administration via shell scripts, Ansible, Jenkins, and IaC. 🔹 Cloud Architecture Certified in OCI, AWS, Azure, GCP, and Alibaba Cloud, with deep experience in hybrid & multi-cloud setups. Skilled in OCI Exadata Cloud@Customer, AWS RDS/Aurora, Azure SQL Database, Databricks, and multi-region failover. Migrated enterprise systems (DB + middleware) to cloud with zero-downtime cutovers and automated DR. 🔹 DevOps & Modern Platforms Proficient with Docker, Kubernetes, and OpenShift for containerized DB + application deployments. Extensive experience in building, optimizing, and maintaining Oracle Integration Cloud (OIC) processes, adapters, and orchestration for enterprise-scale clients. VBCS (Visual Builder Cloud Service): Skilled in designing and developing responsive, low-code applications integrated with Oracle SaaS and PaaS ecosystems. Strong background in CI/CD (Jenkins, GitLab, Ansible, Terraform). Experience securing secrets with Vault, integrating monitoring stacks (Prometheus, Grafana, ELK). 🔹 Odoo & Application Layer Odoo deployment, backend DB optimization, and module customization. Report building & tailoring business workflows for performance and usability. Tomcat, Apache, IBM WebSphere, Oracle WebLogic, and Bitnami stack administration. 🔹 Data & AI Solutions Data Engineering & Warehousing: Azure Data Factory, Databricks, Oracle OBIEE, Snowflake. AI Agent Development: Built agents for self-healing DBs, N8N automation, and natural language querying. Supabase Consultation: Connect Supabase with AI agents to simplify backend management for non-developers. Automate project provisioning, query execution, function creation, and API management. Enable natural language interaction with data, making database operations accessible to entire teams. ✅ Key Certifications: Oracle 19c OCP DBA | PostgreSQL Advanced v11 | MySQL 8.0 OCP | MongoDB Associate DBA | Redis Certified Developer | Microsoft Azure Administrator | OCI 2025 Certified Multicloud Architect | OCI GenAI | Oracle GoldenGate Implementation Specialist | WebLogic 12c OCP | YugabyteDB DBA

If you are trying to move past basic "AI-assisted coding" buzzwords and build automated, production-ready multi-agent ecosystems with ironclad security, proper routing, and absolute observability—we should talk. I am an AWS Certified Solutions Architect - Professional with over 14 years of engineering hands on and tech lead experience. I specialize in bridging the gap between cutting-edge AI frameworks and enterprise-scale cloud stability. Most recently, I architected a governed, multi-layer AI Platform on AWS EKS that saved $300K in AI spend through advanced model routing optimization and targeted frontier model usage. 🧠 Core Expertise & What I Do: - Enterprise AI & Agentic RAG: Architecting multi-agent orchestration layers using Claude Agent SDK (A2A), OpenAI Agents SDK, and LangGraph. I build intent-driven routing across Planner/Retriever/Executor agents with closed-loop reasoning and zero human-in-the-middle. - Model Governance & Observability: Setting up high-performance LLM Gateways (LiteLLM, TensorZero) paired with complete trace observability (Langfuse, Dynatrace). - MCP Server Integration: Designing Model Context Protocol (MCP) hubs (JSON-RPC 2.0) and tool registries to safely bridge AI interfaces with your databases, internal pipelines, and vector stores (Qdrant, OpenSearch). - High-Scale Data & SaaS Architecture: Designing secure, multi-tenant SaaS platforms with hybrid database isolation (Postgres, MongoDB, ClickHouse) capable of handling near-real-time streaming analytics. 🛠️ The Technical Stack I Deploy: - AI/RAG: Claude Agent SDK, OpenAI Agents, LiteLLM, TensorZero, LangGraph, Langfuse, Qdrant, OpenSearch - Cloud/DevOps: AWS (Bedrock, EKS, Serverless), GCP, Kubernetes, Docker, Terraform, CI/CD - Databases/Data: PostgreSQL, MongoDB, Cassandra, ClickHouse, Redis, Real-time ETL Pipelines - Languages/Architecture: TypeScript/Node.js, Python, Go, Microservices, Event-Driven Architecture 🤝 Engagement Models: - Whether you are an early-stage startup looking to establish a bulletproof AI roadmap or an enterprise modernizing a legacy data ecosystem, I adapt to your delivery cycle. I operate as a strategic advisor, a fractional software engineering leader, or a hands-on core infrastructure architect.

✔️ 𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 - I help startups and businesses build reliable backend systems, data platforms, and AI-powered automation solutions. Over the last 8+ years, I've worked across 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 engineering, data engineering, and analytics -building systems that process millions of records, integrate with third-party APIs, automate business workflows, and deliver actionable insights. My experience includes designing scalable APIs, data pipelines, social media intelligence platforms, reporting systems, AI integrations, and cloud-native applications. What I can help you with ✔ Backend Development • FastAPI • Django / DRF • Flask • REST APIs • Microservices • Authentication & Authorization ✔ Data Engineering • ETL / ELT Pipelines • Airflow • PostgreSQL • MongoDB • Data Warehousing • Clickhouse • Reporting Systems ✔ AI & Automation • OpenAI • Claude • LLM Integrations • AI Workflow Automation • RAG Pipelines • Agentic Systems ✔ Web Scraping & Data Collection • Scrapy • Selenium • Playwright • BeautifulSoup • Large-scale Data Extraction ✔ Cloud & DevOps • AWS (Lambda, ECS, EC2, RDS, S3, SQS) • Docker • Kubernetes • CI/CD ✔ Recent Projects • Built a Social Media Analytics Platform processing data from Reddit, TikTok, and Twitter to identify trends and influential accounts. • Developed AI-powered automation workflows integrating multiple APIs and LLMs for lead generation and business intelligence. • Designed data pipelines and reporting dashboards handling large-scale operational data and business KPIs. • Built backend systems supporting real-time data ingestion, processing, and analytics workloads. ✔ What Clients Appreciate • Strong communication • Ownership mindset • Clean, maintainable code • Fast turnaround • Ability to work independently If you're looking for someone who can take ownership of backend systems, data pipelines, or AI-powered workflows and deliver production-ready solutions, let's connect. Best regards, 𝗞𝗿𝗶𝘀𝗵𝗻𝗮

I do fixed-cost, goal-oriented projects only. No hourly billing. You need results, I need clear goals. We talk, agree what matters most, split it into steps, review weekly. Two kinds of work. Either you have an idea and nothing built yet, and I build the first real working version and get it live, usually in two to six weeks. Or you already have something half finished, slow or broken, often AI-generated, and I find out what is wrong and get it working properly without shutting your business down. ** How we can work together (fixed rate) ** Architecture audit and tech roadmap: from $1,500. I review what you have, or plan what you want to build, and give you a clear written plan. Ready-to-launch MVP: from $6,000. I take your idea and build a working product ready for your first users or investors. ** A few results ** Built the first version of the backend for a trading marketplace that now moves about 1.5 billion dollars a year. Seven years later the CTO asked me back to help it scale. Built a sales tool together with its CEO that went from zero to 40,000 dollars a month within three months of launch. Built a tool for doctors that handles patient health records under HIPAA rules, on my own, start to finish: servers, admin area, email automation, and the sites doctors and patients use. Co-founded a software marketplace worth 20 million dollars at its peak and ran the technical side. Fifth engineer at a hosting company that grew to 15 million users. ** What I build ** Software products, internal tools that replace slow manual work, and iOS and Android apps with React Native. Recent work spans healthcare, education, online stores, and US sports pool apps like pick em and squares. ** Stack ** Full stack TypeScript: Node.js, React, Next.js, React Native. PostgreSQL, MongoDB, Redis. AWS hands-on for 10+ years, from bare metal to Kubernetes and serverless. AI built into features (OpenAI, Claude, Gemini, custom agents, RAG) and into how I deliver, always with tests and guardrails so speed never costs quality. ** Experience ** Top 3% network at Toptal since 2016. 15+ years delivering for founders, from zero to companies running at billions per year. Master's degree in Physics. I keep communication clear and direct, and I ask the same of you. If you have something you want built, or something built badly you want fixed, send me a message and tell me about it.

⭐ Top-Rated ✔️ Fluent in English 💡 Creative Problem Solver 🚀 Ai + Full-Stack Expert Senior Full-Stack Engineer specializing in SaaS platforms, AI automation, and trading systems. I build production-grade software designed to scale, automate operations, and solve complex technical problems reliably. Over the past 15+ years, I’ve worked across full-stack development, backend infrastructure, real-time systems, workflow automation, and financial technology. I focus on building systems that are fast, stable, maintainable, and built for real-world usage — not just prototypes. What I work on: • Full-stack SaaS platforms — React, Next.js, Node.js, Python, PostgreSQL, Supabase • AI automation & AI agents — OpenAI, Claude, LangChain, n8n, workflow orchestration • API integrations — CRMs, ERPs, payment systems, broker APIs, third-party platforms • Trading infrastructure — Binance integrations, algorithmic trading systems, market data pipelines • Real-time dashboards & admin systems — analytics, monitoring, operational tooling • Scalable backend architecture — queues, workers, microservices, WebSockets • Data processing pipelines — scraping, enrichment, automation, large-scale processing I work end-to-end: architecture, backend, frontend, integrations, infrastructure, and deployment. Whether you need: * an AI-powered business automation system, * a scalable SaaS platform, * a real-time trading application, * or a complex backend that needs to run reliably 24/7, I can take ownership of the technical side and deliver production-ready results. I value clean architecture, clear communication, performance, and long-term maintainability. After 15+ years building software, I know where systems fail in production — and I build with that in mind from day one. If you’re looking for a senior engineer who can think independently, solve difficult problems, and ship reliable systems without constant supervision, let’s talk.

As a senior backend developer, I specialize in designing clean, scalable systems that deliver real results , whether it’s a blazing-fast job portal, a real-time dating app, or a secure document management tool. 💡 What I’m Best At: Languages & Frameworks: Node.js, NestJS, Express.js, Django, FastAPI, TypeScript, JavaScript, Python Databases: Supabase, PostgreSQL, MongoDB, DynamoDB — advanced schema design, indexing, migrations Async & Event-Driven: Celery, RabbitMQ, Redis Pub/Sub, WebSockets, real-time chat GraphQL: API development using Hasura GraphQL Engine CI/CD: Docker, GitHub Actions, CircleCI, containerized microservices Bot Development: Telegram Bots 🤖 ✨ Notable Projects: ✅ Afriwork (Job Portal): Optimized 1.5M+ job applications — reduced job application queries from 5s → 258ms with schema redesign and indexing. ✅ Ethio Tidar (Dating App): Real-time matchmaking using WebSocket, Redis sessions, and session security. ✅ Adinas Fleet Management: Django, Celery, Firebase for vehicle booking notifications — upcoming bookings trigger automated push and email alerts. ✅ eLawyer SaaS API: Built via Cursor.io and Claude — delivered core backend in 9 days (Upwork project: API Development for Cursor.io Based SaaS Product). 🚀 Why Clients Choose Me: I don’t just write code — I solve real business problems with: Clean, documented, maintainable backends Strong test coverage (unit, integration, stress tests) Smart use of AI tools to move fast Clear, proactive communication Full-cycle delivery: design → implementation → CI/CD → monitoring 🤝 Let’s build something reliable and scalable — on time and stress-free. 📌 Available for new backend and API projects — ready to get started!

I'm a skilled Java developer with 7+ years of experience and a Bachelor's degree in Computer Science., specializing in Java, Python, and JavaScript.I have been tech leader in the last two companies. My expertise is in Backend/Frontend development, Restful API, Web Scraping & Crawling, Devops. ➢ Strong Programming skills, in designing and implementing scalable applications using Spring Boot, Spring MVC, Java-J2EE, Nodejs, Express, Struts, Spring Data JPA, JPA, Hibernate, Spring Securit, Rabbitmq, etc. ➢ Database: MySQL, PostgreSQL, Redis, MongoDB, ClickHouse. ➢ Familiar with SQL, can do performance tuning and riched experience in database design. ➢ CI/CD: Jenkins/Gitlab CI/CD/ Github Action. ➢ DevOps: Linux, Ansible, Docker, Kubernetes. ➢ Extensive experience in working with JavaScript/TypeScript languages, frameworks, libraries, and technologies such as Vue.js/ React, NextJS, Tailwind, ShadCN. ➢ Familiar with Web Scraping and automation using Python or JS. My clients' happiness is always my top concern. I'll be looking for a communication from you.:)

I help startups and businesses build scalable web applications, SaaS platforms, and operational systems that are fast, reliable, and designed for real-world growth. With 12+ years of experience in full-stack development, I’ve worked on AI-powered platforms, enterprise systems, automation tools, eCommerce applications, and large-scale web products across multiple industries. My focus is building clean, scalable systems that solve business problems not just shipping features. What I Build • SaaS Platforms • Full-Stack Web Applications • AI Integrations & Automation Systems • Dashboards & Internal Tools • Real-Time Applications • API Integrations • Backend Systems & Cloud Infrastructure • Shopify & eCommerce Platforms • Production-Ready MVPs Tech Stack Frontend: React.js, Next.js, TypeScript, Tailwind CSS Backend: Node.js, Python, Go, Express.js Infrastructure: AWS, Docker, Kubernetes, CI/CD Databases: PostgreSQL, MySQL, Redis, ClickHouse Selected Experience • Built scalable SaaS platforms with modern frontend architecture and cloud-native backend systems • Developed automation workflows and operational tools that improved business efficiency and reduced manual processes • Optimized backend systems and infrastructure for high-traffic applications handling real-time operations • Led end-to-end product development from architecture and deployment to scaling and maintenance I care about building systems that are maintainable, scalable, and aligned with long-term business goals. If you need a senior full stack engineer who can contribute beyond coding and help structure products properly from both a technical and operational perspective, let’s talk.

I'm a Backend Software Engineer with 3.8+ years of experience building high-throughput microservices for WealthTech and Stock Broking platforms. My expertise spans real-time data streaming with Apache Kafka, Order Management Systems, and trade analytics. I work primarily in Java and Spring Boot, backed by GraalVM, TimescaleDB, ClickHouse, and Redis for performance and scale. I deploy resilient systems on Kubernetes using GitOps workflows, with full observability via Prometheus, Loki, and Grafana. I also build secure APIs using OAuth 2.0 and encryption best practices. Looking to help fintech and WealthTech teams strengthen their backend systems — let's connect.