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I am a Senior DevOps Engineer with 10+ years of hands-on experience in architecting, automating, securing, and optimizing mission-critical cloud infrastructure for startups, SaaS platforms, fintech companies, healthcare systems, and enterprise-scale applications. I specialize in building highly available, scalable, secure, and cost-optimized infrastructure across AWS, AZURE, GCP, and Kubernetes environments. I have successfully designed and managed large-scale infrastructures containing hundreds of microservices running on single and multi-cluster Kubernetes environments. My expertise extends beyond traditional DevOps into DevSecOps, Cybersecurity, Compliance, MLOps, AI Infrastructure, and Agentic AI deployment systems. I help businesses with: ✔ Cloud Architecture & Infrastructure Design ✔ Kubernetes Architecture (EKS, GKE, Multi-Cluster, Multi-Tenant) ✔ CI/CD Pipeline Design & Automation ✔ DevSecOps Implementation ✔ Infrastructure as Code (Terraform, Ansible) ✔ MLOps & AI Model Deployment Infrastructure ✔ LLM Infrastructure & Agentic AI Deployment ✔ Security Hardening & Compliance Readiness ✔ Cost Optimization & Performance Tuning ✔ Monitoring, Logging & Incident Response ✔ Disaster Recovery & High Availability Architecture Core Expertise: ☑ AWS Architecture & Operations VPC, ELB/ALB, API Gateway, AWS Lambda, Cognito, EKS, EC2, Route53, RDS, IAM, Auto Scaling, CloudFront, EBS, EFS, CloudWatch, ACM, SES, SQS, SNS, WAF, Security Hub, GuardDuty, Secrets Manager, Organizations, Control Tower ☑ GCP Architecture & Operations VPC, VPC Peering, Shared VPC, Cloud Run, GCE, GKE, CloudSQL, BigQuery, Dataflow, Pub/Sub, Cloud DNS, GCS, IAM, Cloud Armor, Security Command Center, Load Balancing, Artifact Registry, Monitoring ☑ DevSecOps & Cybersecurity IAM Security, Zero Trust Architecture, Vulnerability Management, Container Security, Kubernetes Security, Secret Management, SIEM Integration, WAF, DDoS Protection, Security Audits, CIS Benchmarking, Policy Enforcement, SOC Monitoring ☑ Compliance & Governance HIPAA, GDPR, SOC 2, PCI-DSS, ISO 27001, FinTech Compliance, Healthcare Compliance, Audit Readiness, Security Documentation, Risk Assessment, Governance Controls ☑ Infrastructure as Code Terraform, Terragrunt, Ansible, CloudFormation, Pulumi, Docker ☑ Containerization & Orchestration Kubernetes, Helm, Kustomize, Docker, Docker Swarm, Docker Compose, ArgoCD, GitOps, Service Mesh, Ingress Controllers ☑ CI/CD & Automation GitHub Actions, GitLab CI/CD, Jenkins, CircleCI, Azure DevOps, ArgoCD, Atlantis, SonarQube, Automation Pipelines ☑ MLOps / AI / Agentic AI ML Infrastructure, Model Deployment, GPU Workloads, Kubeflow, ML Pipelines, LLM Deployment, Vector Databases, RAG Infrastructure, AI Agents Deployment, AI Ops, Model Monitoring ☑ Monitoring / Observability Prometheus, Grafana, Datadog, ELK Stack, Sentry, Jaeger, OpenTelemetry, Loki, AlertManager, Incident Management ☑ Linux System Administration Ubuntu, Debian, CentOS, RedHat, System Hardening, Performance Optimization, Shell Scripting ☑ High Performance Web Services Nginx, Apache, Tomcat, Varnish, HAProxy, Load Balancers, Reverse Proxy Optimization ☑ Database & Data Infrastructure PostgreSQL, MySQL, MongoDB, Redis, Cassandra, Elasticsearch, Replica Sets, Performance Tuning, Backup Strategies ☑ Source Control & Collaboration GitHub, GitLab, Bitbucket, Azure DevOps ☑ SSL / CDN / DDoS Mitigation Cloudflare, Let’s Encrypt, AWS Shield, WAF, CDN Optimization Why Clients Hire Me: ✔ Fast problem-solving under pressure ✔ Production-grade infrastructure expertise ✔ Security-first architecture mindset ✔ Strong communication & ownership ✔ Long-term scalable solutions, not temporary fixes ✔ Deep understanding of startup and enterprise environments

Hello👋 Are you looking for experienced and certified Java engineers to boost your project? You are on the right page! Clear Solutions team provides Java engineers and grows their skills for you. We have more than 12 years of experience in IT and 8+ in Java. My team and I are happy to provide: 🚀 Java developers with transparent knowledge for transparent rates 🚀 People development services: technical assessments, mentoring, evaluation etc. Based on more than 500 interviews and technical assessments we made in the industry so far we created our own evaluation scale. Therefore you always know what set of knowledge you pay for each grade. Do you feel this is what you need? Let's schedule a quick call and find out how we could help you to grow ✅ I have an experience in the following: 👉 migration from on prem to AWS 👉 building microservce architecture from scratch 👉 delivering robust and high-quality code with unit tests 👉 building java high-load and distributed applications 👉 migration from monolith to microservices 👉 building the right engineering culture inside the company 👉 mentoring technical leaders Tech Stack: 🔹 Languages: Java 8, Java 16, Groovy. Spring boot, RESTful API, DB design, 🔸 Frameworks: Spring, Spring Boot, Hibernate, Spring Data 🔹 Clouds: AWS 🔸 SQL: PostgreSQL, MariaDB, Oracle 🔹 NoSQL: Elasticsearch, Redis, MongoDB, Cassandra, DynamoDB 🔸 Message brockers: Apache Kafka or RabbitMQ 🔹 Testing: Junit5, Testcontainers, Spock, RestAssured We have expertise in the following fields: ✅ FinTech, ✅ Trading, ✅ Cryptocurrency, ✅ Banking, ✅ Data processing, ✅ Healthcare, ✅ Social Networking and more. Do you feel this is what you need? Let's schedule a quick call and find out how we could help you to grow As a Backend Developer, I specialize in building robust Java Applications using Core Java, Spring Framework, and Spring Boot 3, leveraging tools like Maven, Gradle, and Bazel for efficient builds, and integrating Hibernate, JPA, and Apache POI for database and document handling. I have extensive experience with RESTful Architecture and SOAP for designing APIs, ensuring Application Security, and implementing testing frameworks like JUnit, JUnit5, Mochito, and AssertJ. I work across diverse environments, including Docker, AWS, Amazon Elastic Beanstalk, AWS Lambda, Google Cloud, and Azure (Azure Cosmos DB), utilizing databases like PostgreSQL, MySQL, MongoDB, Oracle Database, Microsoft SQL Server, IBM Db2, and RabbitMQ. On the frontend, I use HTML, CSS, JavaScript, TypeScript, Angular, AngularJS, and React, collaborating seamlessly using tools like Jira. For messaging and event-driven architecture, I rely on Apache Kafka, Apache ActiveMQ, and RabbitMQ, and for advanced testing, I employ Testcontainers. With a focus on Software Architecture & Design, I also develop Standalone Applications, Desktop Applications, and Web Services, ensuring scalable, secure solutions for enterprise systems and Microservices Architecture.

Hello, I provide fast, robust and shippable IT solutions within reasonable time. I'm ready to help you to ship the best and most valuable product. For 11 year I've been developing software solutions in Healthcare and Social Care industry on Java Spring Framework Stack I participated in the development of the microservice architecture for one of top players in Danish market of Healthcare Solutions - EG.DK company For the same customer I developed an Authentication Service (Based on Spring Security Framework) to cover the customer's demand in multiple types of Authentication mechanisms (SAML, OAuth, SSO) The technology stack: - Spring: Spring Core, Spring Security, Spring Boot, Spring Data); - Docker, Maven, Gradle - Microservices, Hexagonal Architecture, DDD - Git, Mercurial - J2SE (Swing, SWT, I/O, Networking, Multi-threading, Collections, Reflection, Generics); - Database (SQL, MySQL, MongoDB); - Client-side: Angular, HTML, CSS, JavaScript, Jquery

⭐ Designed and implemented systems handling 10,000+ requests per second. ⭐ Played a key role in a tech stack migration that resulted in annual savings of up to $450,000 for the client. ⭐ Delivered the client's flagship product ahead of schedule, resulting in faster time-to-market and a competitive advantage. ⭐ Improved performance by analyzing query plans and optimizing slow queries. Over 15 years of experience in software development, with 5+ years specializing as a Solution Architect. Expertise in Java and the Spring Framework as the primary technology stack, with extensive hands-on experience and a deep passion for Java development. ✅ Skilled in developing technical roadmaps, making critical technical decisions, system design, project estimation, and effective stakeholder communication. ✅ Languages: Java 8-21, JavaScript, TypeScript, Python. ✅ Spring Ecosystem: Spring Boot, Spring MVC, Spring Data JPA, Spring Security, Spring Cloud (Config, Gateway, Eureka), Spring WebFlux. ✅ ORM: Hibernate, EclipseLink, MyBatis. ✅ Message Brokers: RabbitMQ, Google Cloud Pub/Sub, Apache Kafka, IBM MQ, ActiveMQ. ✅ Databases: Oracle, Microsoft SQL Server, PostgreSQL, MySQL, MongoDB, Firebase, Cassandra, Aerospike, Redis, ElasticSearch. ✅ Strong background in Fintech, Social Networks, Logistics & Transportation, and Tourism & Hospitality industries.

Building fintech, healthtech, or e-commerce systems? I specialize in secure, scalable Spring Boot backends and modern Angular frontends for data-sensitive applications that need to perform under pressure. 🎯 WHAT I DELIVER: RESTful APIs with Spring Boot (3.x) - scalable, secure, well-documented Modern frontends with Angular (17+) - responsive, performant SPAs Microservices architecture - Docker, Kubernetes, CI/CD with Jenkins Database optimization - MySQL, PostgreSQL, Redis, MongoDB AI-powered features - FastAPI, OCR integration, data extraction 💡 RECENT PROJECTS: Financial Management System: Reduced processing time by 40% through microservices refactoring Healthcare Web App: Built full-stack platform serving 10K+ users E-commerce Platform: Implemented payment integrations and automated tax calculations ⚡ TECH STACK: Backend: Spring Boot, Spring Security, Hibernate, FastAPI Frontend: Angular, Vue.js, TypeScript, RxJS, HTML5/CSS3 DevOps: Docker, Kubernetes, Jenkins, Git, Bash scripting Databases: MySQL, PostgreSQL, Redis, MongoDB, Apache Solr ✅ WHY WORK WITH ME: 4+ years building production-grade applications for finance, healthcare, and e-commerce Clear communication (fluent English, Polish, Ukrainian) Deadline-focused delivery Clean, maintainable code with 80%+ test coverage Looking for Spring Boot, Angular, or full-stack projects. Let's build something great together! 👋

I am a skilled Java developer with extensive experience in building high-performance, scalable, and reliable applications. With over 3 years of experience in the industry, I have honed my skills in Java development, including core Java, J2EE, Spring Framework, Hibernate, and Maven.