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🚀 AVAILABLE FOR JAVA / SPRING BOOT | AWS CLOUD ENGAGEMENTS With over 8 years building backend systems as a Senior Java Developer, I solve complex technical challenges across the full stack from microservices to cloud-native infrastructure. Whether it's designing Spring Boot services, architecting AWS environments, or setting up DevOps pipelines, I bring the expertise that every Java Developer must have, combined with the cloud and infrastructure skills that modern systems demand. 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗕𝗮𝗰𝗸𝗴𝗿𝗼𝘂𝗻𝗱: ➡ Over 8 years as a Java Developer in end-to-end software development across the full delivery cycle. ➡ Designing Spring Boot microservices and high-performance Java applications for fintech, healthcare, SaaS, and e-commerce as a Java Backend Develope and now extending that into cloud engineering and DevOps. ➡ AWS Cloud Engineer - EC2, S3, Lambda, SQS, SNS, IAM, API Gateway, CloudFormation. I design and run cloud infrastructure, not just deploy to it. ➡ DevOps & CI/CD - Docker, Kubernetes (K8s), Helm, Terraform, Jenkins, Azure DevOps, OpenShift. Working with both AWS DevOps and Azure DevOps pipelines that ship code reliably. ➡ Network engineering in cloud environments ➡Over 20 completed projects as a java software engineer 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽 𝗮𝗻𝗱 𝗙𝗼𝗰𝘂𝘀: ➡ Led cross-functional teams as a Senior Java Developer, delivering clean architecture and scalable cloud-connected solutions. ➡ Guided developers in Spring Boot, Java, and React as a lead Java Backend Developer, maintaining enterprise-grade quality standards. ➡ Consistently raised team output by implementing the best practices any Senior Java Developer is expected to own. 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬 & 𝐅𝐫𝐚𝐦𝐞𝐰𝐨𝐫𝐤𝐬 As a Java Backend Developer I work with: ✅ Languages: Java, Java 8, Java 11, Java SE, Java EE, JavaFX, SQL, JSON, XML, YAML, Python ✅ Frameworks: Spring (Spring Boot, Spring MVC, Spring Data, Spring Cloud, Spring Security, Spring AOP, Spring Batch, Spring WebFlux), Hibernate, JPA, Quarkus, React, Node.js As a Senior Java Developer, I use these to build enterprise applications that are maintainable, scalable, and secure. 𝐂𝐥𝐨𝐮𝐝, 𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 ✅ AWS Cloud Engineer: EC2, S3, SQS, SNS, Lambda, IAM, RDS, API Gateway, CloudWatch, CloudFormation ✅ Azure Cloud Engineer: Azure DevOps, Azure Kubernetes Service ✅ Google Cloud Engineer: GCP core services ✅ Kubernetes, Helm, Docker, Terraform, Jenkins, Maven, Gradle, Git (GitLab, Bitbucket) ✅ AWS DevOps & Azure DevOps pipelines, OpenShift, Infrastructure as Code 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 & 𝐌𝐞𝐬𝐬𝐚𝐠𝐢𝐧𝐠 ✅ MySQL, PostgreSQL, MongoDB, Redis, DynamoDB ✅ Kafka, RabbitMQ, REST APIs, SOAP, gRPC, WebSockets 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐚𝐥 𝐏𝐚𝐭𝐭𝐞𝐫𝐧𝐬 & 𝐏𝐫𝐢𝐧𝐜𝐢𝐩𝐥𝐞𝐬 ✅ Architectures: Microservices, Event-driven, SOA, Monoliths ✅ Patterns: CQRS, Saga, Circuit Breakers, Service Discovery, Distributed Systems ✅ Principles: SOLID, Clean Code, Domain-Driven Design (DDD) A Java Developer must master these to deliver systems that scale that's what I build every day. 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐏𝐫𝐚𝐜𝐭𝐢𝐜𝐞𝐬 ✅ Testing: JUnit, Mockito, TestNG, Unit & Integration Testing ✅ Methodologies: Agile (Scrum, Kanban), TDD, BDD ✅ Version Control: Git, GitLab, Bitbucket My workflow as a Senior Java Developer runs on Agile principles and a test-first mindset, producing applications that are production-ready from day one. 𝐀𝐫𝐞𝐚𝐬 𝐨𝐟 𝐀𝐜𝐭𝐢𝐯𝐢𝐭𝐲 Backend development • Full-stack development with Spring Boot + React • AWS cloud engineering • Azure cloud engineering • Google cloud engineering • DevOps & CI/CD • Network engineering • API integration • Cloud-native applications • SaaS platforms • Android Java development As a Senior Java Developer and aws cloud engineer, I cover the full path from backend code to cloud deployment. 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 During my career as a Java Backend Developer I've worked across: Fintech • Healthcare • E-commerce • Enterprise Applications • Cloud Computing • Telecommunications • Logistics • Travel & Hospitality • Media • Automotive • Blockchain • IoT • SaaS • Retail 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧𝐬 & 𝐑𝐨𝐥𝐞𝐬 ✔ Senior Java Developer ✔ Java Spring Boot Developer ✔ Java Backend Developer ✔ AWS Cloud Engineer / AWS DevOps Engineer ✔ Azure Cloud Engineer / Azure DevOps ✔ Google Cloud Engineer ✔ Kubernetes & Network Engineer ✔ API Developer ✔ Full-Stack Developer (Spring Boot + React) ✔ Android Java App Developer 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 ✔ Java Development Services ✔ Spring Boot Microservices Development ✔ AWS Cloud Engineering & Migration ✔ AWS DevOps / Azure DevOps Pipeline Setup ✔ Kubernetes Cluster Management ✔ Infrastructure as Code (Terraform) ✔ API & System Integration ✔ SaaS Application Development ✔ Android Java App Development ✔ Performance Tuning & Code Reviews 👉 Need a Java Developer who writes clean code and ships it to the cloud? Just drop me a message 04/06/2026

Hello! 🖐I'm QA Engineer with wide experience in API, web and mobile automated testing. I'm an expert in QA automation, performance testing, manual testing and testing processes. Having full stack developer tech skills I have knowledge of how modern software is built. So I know how to give it a proper test 💪🏻 Although as meticulous QA Tester I'm happy to jump on any challenge and technologies / industries, generally I'm focused on providing reliable cost-effective testing solutions for long-term enterprise projects. ✅ 11+ years in QA Engineering ✅ 5000+ automated test cases developed using QA Playwright, Cypress, Selenium and WebDriverIO ✅ 95% pass rate in UI framework with almost 2000 tests ✅ 5+ mobile applications automated as Mobile Automation Engineer (Android / iOS) ✅ 5+ performance testing projects completed using Gatling, JMeter, Locust and k6 ✅ 90% automated tests coverage achieved across critical business applications ✅ 80% reduction in production bugs through comprehensive QA automation strategies Programming languages: 🔶 Python 🔶 Java 🔶 JavaScript 🔶 TypeScript Frameworks and test runners: 🔶 Playwright 🔶 Cypress 🔶 Selenium WebDriver 🔶 WebDriverIO 🔶 Appium 🔶 Pytest 🔶 TestNG 🔶 jUnit Performance testing 📊: Gatling, k6, JMeter, Locust, website performance. Less experience in AppDynamics, DynaTrace, HP Loadrunner. Other experience: 🔹Automation Testing Engineer with expertise in API testing, database validation. 🔹QA/Testing Developer proficient in test framework design and maintenance. 🔹UX testing expert ensuring optimal user experience across all platforms (UX QA). 🔹SDET with strong software engineer background in open-source project, working with huge international team. 🔹Mobile Automation Engineer for iOS/Android applications. 🔹QA Lead experience managing teams of 15+ QA testers and automation engineers. 🔹As QA Engineer received ISTQB certification Industries: ✔️ Healthcare Technology: Automation tester for QA nurse scheduling and patient management systems ✔️ Salesforce QA: Comprehensive testing for 25+ Salesforce orgs and custom applications ✔️ E-commerce & Performance Marketing: Optimized testing strategies for high-traffic platforms ✔️ AdTech: Implemented robust QA automation for advertising manager and provider ✔️ Restaurants: lead QA team on quick-service restaurants (QSR) and table-service restaurants (TSR) multiplatform mobile application Why me?🤝🏻 As an experienced Automation Engineer and QA Tester specialist, I bring a unique combination of technical expertise and business acumen. My role as QA tester evolved into Automation Tester and eventually QA Lead, giving me comprehensive understanding of the entire testing lifecycle. Whether you need a Performance Testing expert, SDET for complex integrations, or Automation QA Engineer for your next project, I deliver measurable results that drive business success.

I am a professional Ukraine based QA Specialist with more than 5 years of experience in software quality assurance, testing, validation, and verification. Well-versed in reviewing software requirement specifications, as well as identifying, creating, and implementing test scenarios, case, and scripts for various projects. I have 4+ years of experience in Automation QA, with a specific focus on using Selenium and BrowserStack for testing web applications. Over the years, I have developed proficiency in creating automated test scripts using Selenium and integrating them with BrowserStack for cross-browser testing. Additionally, I have a strong understanding of programming languages such as Java or Python, which has helped me in writing efficient and effective test scripts. - Extensive experience in Software testing, Web Application Testing, Product Testing and Data Entry. - Good experience in Mobile Application Testing on Android and iOS Platform. - Proficient in Black-box Testing, Functional Testing, Sanity testing, Integration Testing, System Testing, Usability Testing, GUI Testing, User Acceptance Testing (UAT) and Regression Testing. -Experience in Analyzing and designing Test cases, generating test scripts and analyzing test results, testing process, tracking and managing defects. -Experience in doing the Cross Browser testing on IE, FF, Safari, Netscape and Chrome. -Experience in creating Test Plan, Test Report, and Daily/Weekly Status Reports.​ - Extensive Experience in domains such as Core Banking, Investment Banking, Islamic Banking and Channel Testing. - Development automation scripts for mobile apps (iOS, Android) to test functionality, regression and sanity. - Development of automated test-suites using Selenium test suites, JUnit and TestNG.

👋 Hello! Senior Java Developer, Team Lead & Architect with 10+ years of hands-on experience with 10+ years of hands-on experience building scalable, high-load web and mobile applications. I mainly work with Java backend, JavaScript, TypeScript, Oracle, Postgres databases. My core backend work is centered on Spring Boot, focusing on API development and production-grade RESTful services backed by PostgreSQL. My focus is on backend software architecture, ensuring scalability, clean boundaries, and long-term maintainability. ✔️ Ready-to-Use Integrations I can accelerate your product using proven, production-ready integrations: 🚀 AI & LLMs: ChatGPT, LLaMA, Mistral (text, images, vision, automation) 🚀 Payments: Stripe (card payments & transfers) 🚀 Voice & Media: ElevenLabs (speech & voice AI) 🚀 Communication: Zoom (voice & video integrations) My Specialization: ✅ Backend & Architecture: Java (10+ years): modern Java (Lambdas, Streams, Date/Time API), Spring (9+ years): Spring Boot, Spring Data, Spring Cloud for microservices and distributed systems, and Java EE: REST APIs, SOAP, JPA, third-party integrations ✅ Security & Frameworks: Keycloak with OAuth2 and JWT-based authentication, JHipster, Swagger, Liquibase, Axon, Vaadin, ORM: Hibernate, Blaze-Persistence ✅ Databases & Messaging: SQL (10+ years): PostgreSQL, MySQL, MariaDB, Oracle, NoSQL: MongoDB, Redis, Hazelcast, Messaging: Kafka, ActiveMQ, RabbitMQ, Zookeeper, Firebase Messaging ✅ DevOps & Observability: CI/CD: Jenkins, Docker, Kubernetes, ELK Stack (Logstash, Elasticsearch, Kibana) ✅ Quality & Delivery: Testing: JUnit, Mockito, Spring Test, Unit & Integration testing, Full SDLC, code reviews, refactoring, clean architecture 💡 Let’s discuss how I can help you build a reliable, scalable solution!

I help engineering teams solve hard architectural problems — legacy migrations, system redesigns, and building backend platforms that need to scale. Over 14 years of Java development, I've moved beyond writing code to designing the systems that teams build on. My recent work includes: * Reverse-engineered legacy Hybris codebase and rebuilt core modules as independent microservices, including bidirectional data synchronization between Hybris and new service databases during live migration * Automated manual telecom workflows: number porting and provider integrations that previously required manual admin intervention are now fully automated via API integrations with national porting registry and OpenSIPS * Migrated a consumer credit monolith into domain-driven microservices (Java 17, Spring Boot 3, Liquibase) * Designed and owned a Python SDK for ML algorithms at a chip monitoring company — test coverage from 45% to 90% in 6 months I work best on fixed-scope projects where the goal is clear: audit an architecture, design a migration path, or build a new service end-to-end. I deliver a working system — not just tickets closed. Core stack: Java 17, Spring Boot 3, Kafka, PostgreSQL, AWS, Azure, Docker, Python I'm a good fit if you need: * Migration from monolith to microservices * Java or Spring Boot version modernization * Backend system designed and built from scratch * Architecture audit before scaling English B2, available for sync and async collaboration.

Are you looking for a DevOps Engineer or System Administrator to help ensure your infrastructure is stable, scalable, and well-automated? You’re in the right place. My name is Sofiia, and I’m a DevOps Engineer / System Administrator with 6 years of hands-on experience working in a leading engineering company in Kyiv, Ukraine. I work as part of Skynix — a team focused on delivering reliable, scalable, and secure digital solutions. What I Do I help businesses build and maintain infrastructure that is stable, automated, and ready for growth. My experience includes: system administration and infrastructure support cloud infrastructure setup and maintenance CI/CD pipeline design and automation containerization and orchestration deployment and configuration management monitoring, reliability, and system optimization Core Technologies Kubernetes • Docker • Terraform • Ansible • Helm Jenkins • GitHub Actions • Spinnaker AWS • Azure Kafka • Consul • Istio • Calico • Kiali PostgreSQL • MySQL • SQLite • Firebase Java • JavaScript • Spring • Hibernate • jUnit • Postman Git • GitHub Business Domains Magento Commerce platforms WordPress marketing websites WooCommerce stores ERP / CRM systems corporate systems and access/security domains My Approach I focus on building infrastructure that is: reliable under production load automated to reduce manual errors scalable for business growth structured for long-term maintainability My goal is not just to “keep systems running,” but to ensure they are efficient, predictable, and safe for production environments. About Skynix Skynix is a full-cycle development company specializing in LAMP and JAM stack technologies, delivering complex web and infrastructure solutions using modern backend and frontend stacks. Why clients choose us: established in 2015 20+ engineers (senior, middle, junior levels) strong enterprise-level delivery experience reliable remote collaboration across time zones fast adaptation and strong engineering culture If you’re looking for a DevOps specialist who focuses on stability, automation, and system reliability — I’d be happy to collaborate.