Hire the Best Apache Avro Developers

💡 Whether you need a new product built from scratch, help with cloud infrastructure, or expertise in digital signatures and security, I can help you deliver results. I bring together strong backend development skills with solid DevOps and cloud expertise, so you don’t just get code — you get a solution that’s ready for real-world growth. What I Can Do for You 💻 Software Development - Build robust back-end systems using Java or Python, Golang - Deliver production-ready APIs with Spring Boot, Django, Flask, FastAPI - Develop and customize enterprise platforms — including Warehouse Execution Systems (WES) and Warehouse Control Systems (WCS) at Fortna, covering order orchestration, inventory management, and integration with conveyors, sortation, and robotics in automated fulfillment centers 🤖 AI Agents & Automation - Design and build AI agent workflows that automate real business processes — data extraction, document processing, customer support, internal tooling, and reporting - Use AI tools (Claude, Cursor, Codex, LangChain-style orchestration) to ship products faster and reduce manual workload - Build custom integrations connecting AI agents to your existing systems (databases, APIs, internal dashboards) so automation actually fits into your workflow, not bolted on top of it 🗄 Databases & Data Engineering - Design and optimize databases (MySQL, MongoDB, Neo4j, Redis) - Build ETL pipelines and data warehouses (on-premise or cloud) - Web scraping & data processing with Selenium, BeautifulSoup, Scrapy, Airflow, Dagster, Playwright, ... ☁️ Cloud & DevOps - Deploy and manage apps on AWS and GCP - Automate infrastructure with Terraform - Ensure scalability with Kubernetes (K8s) - Set up monitoring dashboards with Prometheus & Grafana 🔐 Security & Digital Signatures - Implement digital signature workflows (PDF signing, PKI, CSC API) - Expertise with tools like iText, PDFBox, pyHanko, DSS Framework - Integrate cryptography & HSM solutions for compliance and security Why Clients Choose Me ✅ I don’t just code — I design, implement, and maintain full solutions. ✅ Strong focus on scalability, reliability, and security. ✅ Experience across product development, infrastructure, and consulting. ✅ Flexible: can work as a hands-on engineer or a technical consultant/partner.

I’m a hands-on enterprise software professional with 14+ years of experience building scalable, process-driven solutions using leading AI, RAG, AI Agents, Agentic AI workflows implementation and collaboration, Vector DB, Graph DB, BPM platforms like Camunda 7 BPM, Camunda 8 BPM (Zeebe), Flowable BPM, Activiti BPM, and JBPM with Spring boot micro services and Python. I’ve helped clients design, automate, and optimize complex business processes for banking, insurance, government, and finance sectors. 💼 What I Do Best ✅ AI & LLM Integration | Intelligent Automation | RAG | Agentic Workflows | N8N (AI Autumation) | Airtable - AI-powered chatbot assistants using OpenAI GPT models, Claud and Ollama (Mistral, Llama), Claud with Python FastAPI, Claude and OpenAI Agents SDK. - Semantic search pipelines using vector db(FAISS and Qdrant), Graph DB(Neo4j), enabling Retrieval-Augmented Generation (RAG) for high-relevance contextual responses. Voice agent platform(RetellAI). - Built custom AI agents with tool usage and memory, orchestrated using LangChain /Langgraph / Agentic frameworks(CrewAI) for multi-step automation tasks and N8N AI workflow automation. - Seamlessly integrated AI assistants into Business Process Management (BPM) workflows (e.g., Camunda) to optimize decision making and automate repetitive user interactions. - Automated agentic workflows for tasks like retrieve incident status, details, cancellation requrest, get incident details via email, create incident, text summarization for form fields, document summarization, incident triage, ticket classification, and knowledge base augmentation. -Auto email responder using, email notifications, whatsapp notifications, SMS, telegram notifications using multi agents workflows. ✅ Business Process Automation - Camunda 7 / Camunda 8 (Zeebe) / Flowable / JBPM / Activiti BPM - Process modeling (BPMN), DMN, and custom workflow engines - Drools, Zen(GoRules) rule engine and complex decision automation ✅ Backend & Microservices Development - Java (Spring Boot, Spring Security, JPA, Hibernate) - Python (FastAPI) for high-performance APIs and AI integrations - RESTful API design, OAuth2, JWT, Keycloak-based security ✅ ETL Tools - Apache NiFi - Apache Airflow ✅ DevOps & Cloud Deployments - Docker, Kubernetes (EKS, ECS) - CI/CD with Jenkins, GitHub Actions - AWS (EC2, S3, Lambda, CloudWatch, API Gateway etc.) ✅ Integrations & Messaging - Apache Kafka (Confluent), RabbitMQ, Apache Camel - Elasticsearch, Apache Solr, Lucene for advanced search - Payment gateways: Stripe, Razorpay, PayPal, Moneris ✅ Frontend Capability (with expert UI/UX team) - Angular, ReactJS, NodeJS - PSD/XD to responsive HTML, Tailwind, Material UI 🎓 Corporate Trainings & Mentorship I offer professional training programs (remote/onsite) on: - Camunda 7 / Camunda 8 (Zeebe) - Flowable / Activiti / JBPM - Elasticsearch ✅ Why Clients Work With Me - Deep domain knowledge in AI + BPM + Microservices - Strong architecture, documentation & code quality - Proven track record delivering enterprise-grade systems - Ability to lead full project lifecycle — from POC to production 💬 Let’s connect and discuss how I can automate and optimize your business with smart workflows, secure APIs, and cloud-native systems.

💻 Senior Java Developer | Spring Boot | Cloud | E-commerce | Automation | ETL | Space Systems | 10+ Yrs 🚀 10+ years of experience building scalable, cloud-native applications and automation systems using Java (8–21), Spring Boot, and modern DevOps practices. ✅ Why Choose Me? Enterprise Java Expertise: Deep knowledge in Java SE/EE, Spring Boot, Spring Cloud, JPA/Hibernate. Space Software Development: 3 years in mission-critical ground segment systems for satellite operations. E-commerce Automation: Integrated with Amazon SP-API, eBay, Etsy, Walmart, Shopify, and more. Cloud & DevOps: AWS, GCP, DigitalOcean, CI/CD (GitHub Actions, Jenkins, GitLab). ETL & API Integration: n8n, Make.com, custom data pipelines with FTP, SOAP, HTTP. Database Proficiency: PostgreSQL, MongoDB, Oracle, Couchbase, Cassandra, Elasticsearch. UI Skills: HTML, CSS, JavaScript, Bootstrap for clean, responsive interfaces. 🔧 Tech Stack Languages: Java, SQL, JavaScript Frameworks: Spring Boot, Spring Cloud, Spring Batch Cloud: AWS, GCP, DigitalOcean Databases: PostgreSQL, MongoDB, MySQL, Oracle, Cassandra DevOps: Docker, Jenkins, GitHub/GitLab CI/CD APIs/Automation: Amazon SP-API, Shopify, DHL, n8n, Make.com

Over the years, I’ve worked with both startups and enterprises to turn complex ideas into reliable, production-ready platforms. My focus is on creating backend architectures that are efficient, maintainable, and built for long-term growth. • Tools I can use when delivering your project ✍🏻 Programming Languages: Java, Python, C++, JavaScript, Dart 🛠️ Backend Frameworks: Spring boot, JakartaEE, Django, FastAPI, Flask 🎨 Frontend Frameworks: React JS, Next JS, Flutter 🛢 Database Management & Cache: MySQL, Supabase, PostgreSQL, MongoDB, SQLite, Redis 🗃️ Event Streaming: Kafka, RabbitMQ 🛡️ Security & Secrets Management: KeyCloak, JWT, HashiCorp ⚙️Automation Management & BPMN: Camunda, N8N 📊 Observability: Grafana, Loki, Kibana, Prometheus 🏗️ System Architectures: Monolithic, MVC, Microservices, Event-driven • Key Highlights - At Crewpr, a Dubai-based startup available on the App Store and Google Play, I served as the first backend engineer. I designed and launched the platform’s entire backend, from architecture to production, delivering a reliable MVP that now serves over 500 active users. - I contributed to Yugo, a large-scale student accommodation platform serving users across Europe, where I enhanced scalability, optimized backend performance, and ensured smooth multi-region operations. - I also collaborated on several governmental digital transformation projects in Ireland, including Enterprise Ireland, NEH, and Startup Ireland, delivering secure, stable, and scalable backend systems that support thousands of daily users. ✨ I believe in clarity, precision, and engineering excellence. Every system I build follows clean architecture principles as OO, SOLID and Design patterns.

I am an Engineer who has multidisciplinary experiences and is expert in Big Data Processing and API Development. I am experienced in creating and implementing scalable data architectures, developing and optimizing ETL (Extract, Transform, Load) processes, and ensuring data quality and integrity. I am also experienced in developing APIs and providing the best solutions for the tech problems.

Top rated, very hands on, IT Systems Architect and Lead Developer with a proven track record that spans more than two decades in both the Private and Public sector. Legit out-of-the-box thinker with problem solving abilities that have consistently provided original innovating solutions or saved heavily invested ones from sinking. ** My 4.2 stars rating is only due to a 9-years old 100K project that was successful but the client only rated it 4.0, due to his particular style of being strict with ratings. This rating only took effect recently due to Upwork making the choice to include LIFETIME ratings. Without it, my overall stars rating would be 4.9** My hard earned skills & experience are backed by a solid formal education in computer science at top-tier US and UK Technical Universities; I hold an MSc in Computer Science from Heriot-Watt University and, during my 6 years with European Commission's Cybersecurity department, I led the development & successful delivery of projects as important as the European Root Certification Authority for EU's Digital Tachograph: dtc.jrc.ec.europa.eu After years of tackling the hardest of IT projects, I am now a true all-rounder that, for the past couple of years have been involved in complex, real world projects built around fine tuned multi-LLM pipelines for reasoning, vision and multi-modal tasks. - AI-integrating endpoint protection using WFP kernel drivers, ETW/Sysmon telemetry, machine learning and on-device LLM reasoning (dual local LLaMA tiers, ONNX/NPU acceleration, behavioral-rule detection), autonomous response logic (graduated SOAR, cryptographic update channels) and WinUI 3 GUIs. C#/.NET 10 and C/C++ kernel coding, cryptography, MLOps and model fine-tuning. - Bespoke and innovative AI-integrating solutions using Python, Streamlit, Anthropic Claude APIs, all-MiniLM-L6-v2, FAISS, PyPDFLoader, LangChain's RecursiveCharacterTextSplitter, Playwright for PDF generation, Mermaid.js, with robust custom renderer, for diagrams/graphs, and fal.ai Flux Schnell, with smart prompt enhancement, for realistic AI image generation. - Multi-Agent Behavioral Surveillance Video Analysis Pipelines built using OpenCV, YOLO, Gemini Flash, Claude and creative Prompt Engineering, - node.js (REST APIs, Servers of all sorts, etc.), AngularJS, Showdown.js - MySQL, PostgreSQL, SQL Server, MongoDB, SQLite, Redis - Office Development (VSTO & Office.js Add-Ins for all of the MS Office apps as well as VBA macros automation/scripting) - Google APIs & Google Apps Script development/deployment, as custom API points, accessing Documents, Presentations, etc., with Google Slides API, Google Drive API, etc. from web or desktop apps. - Puppeteer & Playwright expert with experience in developing and deploying 24/7 scraping/marketing bots via fine tuned AI chatbots, that make posts & add replies to relevant questions. on FB groups and sites like Quora & Reddit. - Browser Extension Development for both Chrome & Firefox (including fully transparent installation of Chrome Extension or FF Extension) - Headless Browser Automation and/or Scraping, either via a script injecting Chrome Extension, with ability of fully clandestine installation, or via Puppeteer (with ability to use the original system provided Chrome browser, either externally or by injecting a custom script in the browser page) - Full-stack LAMP development (Laravel) - .NET/C# Windows Desktop Solutions. Both Windowed Apps (MFC, Windows Forms, WPF, WebView2, WinUI 3) and Background Services development, - C/C++ Low-Level Development on both Linux and Windows platforms (sockets, multi-threading, low-level APIs, etc.) - Azure Active Directory (AD) accessing Apps, mainly used for adding SSO to apps with Microsoft (Azure AD) as the IdP. - Amazon AWS Expert: (CloudHSM, KMS, EC2, S3, Lambda, DynamoDB, RDS) - Google Cloud Platform (GCP) Expert:Google Compute Engine (GCE), Cloud Storage, Cloud SQL. etc. - Cryptography, IT Security & actual HSM (Hardware Security Modules) expert. Experience with FEA (Federal Enterprise Architecture) - Development of Original JPEG Steganography solutions for DRM & IPP purposes. - Programmatic PDF generation & modification (PDFBox, wkhtmltopdf, html2pdf, backend LibreOffice integration, etc.) - ShareLaTeX/Overleaf - Adding OpenID, SAML, OAuth, OIDC (OpenID Connect) authentication & authorization to existing web apps, using Keycloak. - Development of Reverse Proxies (SOCKS or other) as part of Residential IP VPN system development - VPN Development & TAP Drivers (OpenVPN) - Custom (C++), AutoIt, VBScript and JavaScript Windows Application Automation - OTT and Streaming media protocols expert: NDI, DIAL, Google Cast, SSDP, mDNS, AirPlay, Fling, Amazon Device Messaging (ADM) - Development of NDI streaming applications around NDI Tools & Tractus tools (like Tractus MultiView for NDI), for customized NDI stream generation and dissemination I can help you!