--------------------------------------------------------------------------------------------------- 🔰 𝟏𝟎𝟎% Projects Delivered. 200K + Billing 🔰 --------------------------------------------------------------------------------------------------- I have over 15 years of development and implementation experience on projects ranging from small departmental applications through complex enterprise solutions in multi-national corporate environments. My software and application expertise is very diverse and includes Java, J2EE, JSF, JSP/Servlets, and related frameworks and APIs including Spring, Hibernate, Solr, Elastic Search, Kibana, Grails and Groovy, Angular.js, Node.js, Jasper Reports, Amazon Cluster, Mongo DB, DynamoDB, Cognito, Serverless Architecture, Amazon API Gateway, Amazon Lambda, Amazon S3, Redshift, Kinesis, PySpark, Python, Django, Redis, Chargify, Bigdata, Hadoop, Spark, Scala, Machine Learning, Pig, Hive, Ansible, Docker, DevOps, etc. I am not only proficient in technical skill but also possess great knowledge and experience in delivering a broad range of business solutions such as: - CRM - Change & Problem Management - Automotive Vehicle Tune Management - Order Management - Project Management - Warehouse Management - Incident Management - Help Desk - Health Care - Human Resources, etc. Beyond web and mobile application development, I am skilled in high-level requirements gathering, risk analysis, technical design analysis, application modeling, implementation planning, and support.

𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 | 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗔𝗜/𝗠𝗟 & 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 | 𝟭𝟬+ 𝗬𝗲𝗮𝗿𝘀 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 Hi, I'm Alex, a senior full-stack developer with over a decade of experience building scalable web apps, SaaS platforms, and e-commerce solutions. I don't just write code; I solve business problems. What sets me apart is how I blend classic full-stack engineering with emerging tech like 𝗔𝗜/𝗠𝗟, 𝗔𝗜 𝗮𝗴𝗲𝗻𝘁𝘀, and 𝗯𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 not as gimmicks, but as practical tools that give your product a real competitive edge. Whether you need a lean MVP, an enterprise-grade platform, or AI woven into your core logic, I'll turn your vision into a production-ready product you can be proud of. --- 𝗛𝗼𝘄 𝗜 𝗪𝗼𝗿𝗸 (𝗔𝗻𝗱 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗦𝘁𝗶𝗰𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲) I take ownership. From the first line of UI code to the final deployment pipeline, I'm thinking about scalability, maintainability, and your actual business goals. 𝗡𝗲𝗲𝗱 𝘁𝗼 𝗴𝗲𝘁 𝘀𝗺𝗮𝗿𝘁𝗲𝗿 𝘄𝗶𝘁𝗵 𝗱𝗮𝘁𝗮? I've built everything from recommendation engines and intelligent search to custom LLM pipelines using 𝗢𝗽𝗲𝗻𝗔𝗜, 𝗖𝗹𝗮𝘂𝗱𝗲, and 𝗛𝘂𝗴𝗴𝗶𝗻𝗴 𝗙𝗮𝗰𝗲. I also design 𝗮𝘂𝘁𝗼𝗻𝗼𝗺𝗼𝘂𝘀 𝗔𝗜 𝗮𝗴𝗲𝗻𝘁𝘀—think support bots, data extraction workflows, or dynamic task automation—that run reliably in production. 𝗖𝘂𝗿𝗶𝗼𝘂𝘀 𝗮𝗯𝗼𝘂𝘁 𝗪𝗲𝗯𝟯? Whether it's smart contracts, tokenized systems, or decentralized identity, I can guide you through the blockchain landscape and integrate those features seamlessly into a modern web app. 𝗗𝗮𝘁𝗮-𝗱𝗿𝗶𝘃𝗲𝗻 𝘁𝗼 𝘁𝗵𝗲 𝗰𝗼𝗿𝗲? I have a data engineer's mindset. That means I don't just build apps that collect data. I build scalable pipelines (Snowflake, BigQuery, Kafka) that turn that data into your most valuable asset. Above all, I communicate clearly. You'll get proactive updates, honest timelines, and a solutions-oriented partner who wants your product to succeed for the long haul. --- 𝗧𝗲𝗰𝗵 𝗦𝗻𝗮𝗽𝘀𝗵𝗼𝘁 (𝗪𝗵𝗮𝘁 𝗜 𝗔𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝗨𝘀𝗲 𝗗𝗮𝗶𝗹𝘆) 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 Ruby on Rails, Node.js, Python (FastAPI, Flask, Django) REST, GraphQL, WebSockets TDD with RSpec, Jest, Mocha Sidekiq, Redis, background jobs JWT, OAuth2, RBAC 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 React, Vue, Next.js, Angular, StimulusJS Tailwind, Material UI, Bootstrap Jest, Cypress, Playwright SPA, SSR, PWA, responsive + a11y 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 & 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 PostgreSQL, MySQL, MongoDB Redis, Elasticsearch, OpenSearch Snowflake, BigQuery, Redshift, ClickHouse 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗖𝗹𝗼𝘂𝗱 AWS (EC2, RDS, Lambda, SageMaker), GCP, Azure Docker, Kubernetes, GitHub Actions, GitLab CI Serverless, Heroku, Render, DigitalOcean 𝗔𝗜 / 𝗠𝗟 / 𝗔𝗴𝗲𝗻𝘁𝘀 Scikit-learn, TensorFlow, Keras, Pandas OpenAI (GPT-4), 𝗖𝗹𝗮𝘂𝗱𝗲 (𝗔𝗻𝘁𝗵𝗿𝗼𝗽𝗶𝗰), Hugging Face 𝗔𝗜 𝗮𝗴𝗲𝗻𝘁𝘀 (autonomous workflows, multi-agent coordination, task automation) NLP, classification, forecasting, recommendation systems Jupyter, ML pipelines, model monitoring 𝗗𝗮𝘁𝗮 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 ETL (Airflow, Prefect, Dagster) Data lakes/warehouses (S3+Athena, BigQuery) Real-time streaming (Kafka, Redis Streams) Analytics dashboards (Metabase, Superset) 𝗠𝗼𝗯𝗶𝗹𝗲 & 𝗔𝗣𝗜𝘀 Flutter, React Native Stripe, Paddle, PayPal Twilio, SendGrid, Mailgun Google APIs, Firebase, Shopify, Salesforce, Zapier --- 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 & 𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗜 𝗔𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝗘𝗻𝗷𝗼𝘆 - 𝗦𝗮𝗮𝗦 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀 – B2B, B2C, internal tools - 𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 – Shopify customizations, marketplaces - 𝗔𝗜-𝗲𝗻𝗵𝗮𝗻𝗰𝗲𝗱 𝘄𝗲𝗯 𝗮𝗽𝗽𝘀 – smart search, auto-tagging, moderation, 𝗮𝗴𝗲𝗻𝘁-𝗯𝗮𝘀𝗲𝗱 𝗮𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 - 𝗪𝗲𝗯𝟯 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 – DApps, wallets, NFT platforms - 𝗗𝗮𝘀𝗵𝗯𝗼𝗮𝗿𝗱𝘀 & 𝗮𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 – admin panels, KPIs, visualizations - 𝗖𝘂𝘀𝘁𝗼𝗺 𝗖𝗥𝗠𝘀 & 𝗘𝗥𝗣𝘀 – tailored to real workflows - 𝗦𝘁𝗮𝗿𝘁𝘂𝗽 𝗠𝗩𝗣𝘀 – fast, lean, but built to scale --- 𝗟𝗲𝘁'𝘀 𝗕𝘂𝗶𝗹𝗱 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗦𝗺𝗮𝗿𝘁 If you're looking for a developer who combines clean architecture with business sense, understands how to integrate 𝗔𝗜 𝗮𝗴𝗲𝗻𝘁𝘀 and 𝗯𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻, and actually communicates like a human, let's talk. Send me a brief about your project or challenge. I'll give you honest feedback, answer your questions, and help you launch with confidence.

With a recent Master's degree in Machine Learning and Natural Language Processing, I offer a distinctive combination of fresh academic insights and 15 years of extensive experience in engineering. My expertise in Large Language Models (LLMs) is enhanced by a solid background in managing high-load, high-traffic environments, ensuring both innovative and resilient solutions. This unique fusion of up-to-date academic knowledge and significant practical experience positions me to address complex challenges in AI and machine learning adeptly. I am committed to applying my skills to develop sophisticated, effective solutions that align with the diverse requirements of clients across various sectors. My aim is to assist your organization in leveraging the full potential of AI, integrating the latest technological advancements with a robust foundation of engineering prowess. I have in-depth experience in * creating optimized and robust solutions * using caching technologies * data retrieval using Elasticsearch, TF-IDF, embeddings, RAG, etc. * optimizing web-servers to hold millions users a day * CDN setup and customization * frontend optimization for instant loading * divers, real-world, hardcore SEO knowledge If you have popular CMS (Drupal, WordPress, etc.) or a custom one you need to tune, I can help Need help with Mobile Web Site or Android/iOS app, or custom API? I will be useful. Data Analytics I have an experience in building data-warehouse: * setup data collection * digest and store data * build dashboards and reporting systems for end user I also can help you with existed systems like * Google Analytics * Webmaster Tools * Chartbeat, parse.ly, etc. * Redash, Tableau, Grafana, etc. Machine Learning You have plenty of data and want to make it useful? Or already have models and working pipeline but want to make it faster/smaller/more accurate? Let me know.

Welcome to my profile! I specialize in leveraging the power of the ELK stack (Elasticsearch, Logstash, Kibana) to transform raw data into actionable insights. With 10 years of experience in the field, I have honed my skills in data visualization, log analysis, and dashboard creation. Here's how I can help you: 📊 Data Visualization: I excel in designing intuitive and visually appealing dashboards using Kibana to present complex data in a clear and understandable format. Whether it's real-time monitoring or historical analysis, I ensure that your data tells a compelling story. 🔍 Log Analysis: I possess a deep understanding of Elasticsearch and Logstash, allowing me to efficiently ingest, parse, and analyze log data from various sources. From troubleshooting issues to identifying trends, I help businesses make informed decisions based on their logs. 💡 Custom Solutions: Every project is unique, and I thrive on finding creative solutions to address your specific needs. Whether you're looking to optimize performance, enhance security, or streamline operations, I tailor ELK solutions to align with your objectives. Let's collaborate to unlock the full potential of your data with the ELK stack. Whether you're a small startup or a large enterprise, I'm committed to delivering results that exceed your expectations. Reach out today to discuss how we can elevate your data analytics capabilities!

Most backend engineers can write code. Fewer can architect a system that holds up at scale, survives a traffic spike, and stays observable when something breaks at 2am. That's the gap I fill. I'm a Top Rated Plus engineer on Upwork with a 100% Job Success Score across 34 contracts and 4,600+ hours — working with clients from startups to enterprises across ticketing, marketplace, gaming, and HR domains since 2011. What I actually do: I design and build production-grade backend systems in Go — from the API layer down to the infrastructure. That means event-driven microservices with Kafka or RabbitMQ, containerized deployments on Kubernetes, full CI/CD pipelines, and cloud infrastructure on AWS, GCP, DigitalOcean, or Alibaba Cloud. I don't hand you a working local demo and disappear — I deliver something that runs reliably in production, with proper observability, testing at every layer, and documentation your team can maintain. Specifically, I can help you if: — Your monolith is becoming a bottleneck and you need to decompose it into services that scale independently — You're building a new product and need a senior engineer who can own the backend architecture from day one — Your Kubernetes setup is held together with hope and tribal knowledge, and you need someone to make it solid — You need CICD that actually works — automated testing, container builds, and deployments to staging and production without manual steps Tech I work with daily: Go · PostgreSQL · Redis · Kafka · RabbitMQ · Elasticsearch · Docker · Kubernetes · Helm · Terraform · AWS · GitHub Actions · GitLab CI · gRPC · REST How I work: I ask the right questions before writing the first line of code. I communicate in plain language, not jargon. I've worked in agile teams, solo, and everything in between — I adapt to your workflow, not the other way around. And I treat your codebase like I'll be the one maintaining it, because sometimes I am. If you need a senior engineer who thinks in systems, communicates clearly, and delivers work you won't have to redo — let's talk.

Full-stack developer with over 10 years of experience and passion for creating high-performance, user-friendly solutions. ✔ E-Commerce: 6+ years of experience in building eCommerce websites by using Shopware 5 and Shopware 6 (300+ plugins and templates developed in total) ✔ Web Applications: development of web applications by using Symfony (3,4,5,6,7) and experience in data synchronization plugins/projects ✔ Primary skills: PHP, SQL, JavaScript, HTML(5), CSS(3) ✔ Advanced skills: Shopware 5, Shopware 6, Symfony7, Symfony6, Symfony5, Symfony4, Symfony3, Doctrine, PostgreSQL, MySQL, ElasticSearch, Clickhouse, OOP, Design Patterns, Redis, RabbitMQ, Git, API (Rest, Soap), Smarty, Twig, Jquery, ExtJs My key approaches in work are: ✔ Commitment to delivering tangible results and achieving success in every project ✔ High focus on code quality and thorough testing ✔ Transparency and open communication ✔ Proactiveness in identifying and addressing issues ✔ Continuous learning to stay up-to-date with the latest industry trends

Senior Full-Stack Engineer | Laravel & Symfony | AWS & Rust Microservices Expert Software Engineer with 5+ years of experience in high-performance web development. I am a Full-Stack developer with a deep background in architecting and maintaining complex software systems. My expertise spans the entire development lifecycle, from designing robust backend architectures in PHP, Go, and Rust to deploying and managing scalable infrastructure on AWS. 🛠 Core Expertise: Backend Mastery: Advanced proficiency in PHP (Laravel 7-12, Symfony 4-6, Yii2), Go, and Python. Experience in refactoring performance-critical components into Rust microservices and implementing asynchronous processing with PHP Fibers. Infrastructure & Cloud: Skilled AWS Builder (EC2, RDS, S3). Proficient in Terraform, Docker, and CI/CD pipelines (GitHub Actions) for automated and reliable deployments. Modern AI & Search: Implementation of RAG (Retrieval-Augmented Generation) + SQL strategies, Vector search (PostgreSQL Vector), and integration of LLMs (Gemini, Llama, GPT). Data Management: Extensive experience with PostgreSQL, MySQL, Redis, MongoDB, and the ELK stack (Elasticsearch, Logstash, Kibana, OpenSearch). Frontend & E-commerce: Building modern interfaces with React, Next.js, and Vue.js. Experience with Shopify, Sylius, and WordPress. 🚀 Key Project Experience: B2B Booking Solutions: Architected multi-tenant hotel booking systems, integrating complex APIs from global providers (Expedia, Oracle, Hilton, HotelTrader). High-Traffic APIs: Designed and optimized RESTful APIs for high-load environments, focusing on SOLID principles and clean code. System Migrations: Leading migrations of legacy systems to modern frameworks (Symfony/Laravel) to ensure long-term maintainability and performance. 💡 My Approach: I focus on delivering high-quality, scalable code that solves real business challenges. Whether it's optimizing complex database queries, implementing advanced search logic, or managing cloud infrastructure, I ensure that the solution is robust and future-proof.

👨‍💻 Dynamic Full-Stack Developer with over 4 years of experience in building robust web applications. I thrive on solving complex problems and delivering scalable solutions that meet real-world needs. My passion for coding drives me to stay updated with the latest technologies and best practices. Technical Skills: 1- Languages: Python, JavaScript, HTML, CSS 2- Frameworks: Django, Django REST Framework (DRF), React 3- Databases: PostgreSQL 4- APIs: RESTful Services 5- Tools & Technologies: Git, Docker, AWS (basic), CI/CD I’m dedicated to creating seamless user experiences and efficient back-end systems. Whether you're looking to expand your team or kick off a new project, I’m here to help bring your ideas to life with quality and speed. 🌟 Ready to collaborate? Let’s chat about how I can contribute to your next project!

🥇 Top Rated Contractor 🥇 95% Job Score 🥇 Ex-employee of top companies: Gartner & Dynatrace. 🥇 Certified of top tools like Dynatrace & Datadog. 🥇 Top Skills: Cloud Monitoring, Dynatrace, Datadog, New Relic, Grafana, Prometheus, OpenTelemetry, Performance Monitoring, Site Reliability Engineering, SLO's, SLA's, APM, Splunk, Observability, Jaeger, Signoz, OpenAPM, Inspectit. 📞 Invite me to your job and we can book a complimentary 30-minute consultation together that’s earnestly helpful. 📞 As an observability expert with a wealth of experience garnered from my tenure at Dynatrace, I bring forth a comprehensive understanding of performance monitoring and troubleshooting. With a proven track record of aiding over 30 customers in resolving intricate performance issues, I excel in providing tailored solutions to meet diverse business needs. Key Skills and Expertise: 1. Performance Optimization: Leveraging a deep-rooted understanding of performance metrics and indicators, I specialize in enhancing system efficiency and reliability. Through meticulous analysis and optimization techniques, I ensure that systems operate at peak performance levels. 2. Observability Platforms: Proficient in utilizing leading observability platforms such as Dynatrace, New Relic, Datadog, and Prometheus, I offer unparalleled expertise in setting up, configuring, and extracting actionable insights from these tools. 3. Dashboard Design and Alerts Configuration: Crafting intuitive dashboards and configuring proactive alerts is at the core of my services. I ensure that stakeholders have real-time visibility into critical metrics, enabling swift responses to potential issues. 4. Tools Consolidation: Recognizing the importance of streamlined operations, I specialize in consolidating monitoring tools to optimize costs without compromising on functionality. By assessing your specific requirements, I devise tailored strategies for tool consolidation at the best pricing. 5. Splunk Integration: Proficient in Splunk integration, I enable seamless data aggregation and analysis, empowering organizations to derive meaningful insights from vast datasets. 6. Site Reliability Engineering (SRE): Embracing SRE principles, I focus on building resilient systems that prioritize reliability and scalability. Through proactive monitoring and automation, I mitigate risks and ensure uninterrupted service delivery. 7. Other: Distributed tracing, Monitoring, ELK APM. Why Choose Me: - Proven Track Record: With a history of successfully resolving performance issues for a diverse clientele, I bring a wealth of practical experience to every project. - Expertise in Leading Tools: Whether it's Grafana, Dynatrace, or Datadog, I possess comprehensive expertise in utilizing leading observability platforms to drive actionable insights and optimizations. - Cost-Effective Solutions: I understand the importance of cost optimization without compromising on functionality. My approach to tools consolidation ensures maximum ROI for your monitoring investments. - Commitment to Excellence: I am dedicated to delivering exceptional results, collaborating closely with clients to understand their unique challenges and requirements. If you're seeking a seasoned observability expert with a proven track record of optimizing performance and driving efficiency, I'm here to help. Let's work together to elevate your systems to new heights of reliability and performance. Let's chat!

Available mostly in the evenings/nights and full days in weekends of the GMT +2 timezone as I have already a daily job. Have over 20y of experience in the field. Experience: Cloud - AWS (since 2009), GCP (3y), Azure (2y), DigitalOcean, Hetzner, Linode etc Containers: Kubernetes, OpenShift, minikube, kops, Docker, docker-compose Scripting/programming: bash, Python, Ruby, Go, Java, PHP, Groovy etc. CI/CD: Jenkins with Groovy, Gitlab pipelines, Bitbucket pipelines, GitHub actions etc. Monitoring: Elastic stack with various beats, Prometheus, Grafana, Zabbix, Nagios, AWS CloudWatch, Munin, Cacti etc. Configuration managment: Ansible, Puppet, Chef SCM: git, svn, Github, (Bitbucket, GitLab - both hosted and on-prem) IaC: Terraform (medium level), Pulumi (beginner) Databases: MySQL, Elasticsearch, SQLite, MongoDB, PostgreSQL Security: OpenVAS, Lynis, PCI-DSS compliance, CIS hardening, OpenSSL Configuration formats: most configuration formats like HCL, YAML, JSON, JSON-path, working with yq and jq, Jinja etc. Virtual Private Networks: Wireguard, OpenVPN, pptp PHP based CMS: Wordpress, Joomla, Mediawiki, Drupal, Concrete - setup, migration, hardening, version upgrade etc. Backup: Borg, zyxBackup, rsync, self written bash scripts OS: Linux, Windows, MacOS, FreeBSD, OpenBSD Repo: Nexus, Artifactory, most common Docker/npm/maven registries etc. Certified: CNCF Kubestronaut Certified Kubernetes Application Developer (CKAD) Certified Kubernetes Administrator (CKA) Certified Kubernetes Security (CKS) Kubernetes and Cloud Native Associate (KCNA) Kubernetes and Cloud Native Security Associate (KCSA) Linux Foundation Certified Sysadmin (LFCS) Linux Professional Insitute Certification 101/102 (LPIC 101/102) Prometheus Certified Associate (PCA)