Greetings 👋 I’m a Senior Full Stack Java Spring Boot Developer and a Certified AWS DevOps Engineer with more than 10 years of professional experience in end-to-end fullstack development. My background includes Java based backend systems using Spring Boot, Spring MVC, and Spring Cloud, and in building modern fullstack apps with React. My work spans across healthcare, insurance, and automation platforms. 📌 What I Provide 💼 🔹 Complete development lifecycle: planning, coding, testing, deployment, and maintenance 🔹 AWS and Java certified expertise 🔹 Implementation of DevOps practices and CI/CD pipelines 🔹 Cloud cost-efficiency strategies 🔹 Application performance enhancement 🔹 Rapid MVP development to bring your concept to life 📌 Why Collaborate with Me 🤝 🔹 10+ years of hands-on experience in Java and DevOps engineering 🔹 Specialized knowledge in domains like Healthcare and AdTech 🔹 Strong commitment to high code quality and reliability Fullstack / Frontend Capabilities ⚛️ As a Full Stack Java Spring developer, I build engaging and scalable applications by integrating modern frontends - React.js, Next.js, and Vue.js - with robust Spring Boot and Java-based backends. I follow fullstack best practices and deliver clean UI using HTML, CSS, and Tailwind CSS. Back End Expertise ⚙️ Working with Java since version 6 through 21, I utilize frameworks such as Spring Boot, Spring MVC, Spring Cloud, Spring Batch and Spring Security to build scalable services. DevOps & AWS Experience ☁️ With 8+ years in AWS environments and certifications in both DevOps Architecture and Development, I specialize in serverless and containerized solutions using AWS Lambda, Docker, Kubernetes, RDS, and Landing Zone - ensuring scalability and zero-downtime deployments. Database Skills 💾 I’m proficient in relational databases like PostgreSQL, MySQL, and SQL Server. Also skilled with NoSQL systems including Redis, MongoDB (DocumentDB), Aerospike, DynamoDB, and OpenSearch (ElasticSearch). For analytics, I work with Amazon Redshift. API Integration 🌐 Skilled in REST, SOAP, Swagger, and OpenAPI 3 for seamless service integration. Performance Tuning 🚀 Utilizing tools like JMeter, Gatling, AWS X-Ray, and JProfiler to optimize speed and resource usage. Messaging Systems ✉️ Experienced in asynchronous communication with Apache Kafka, Amazon SQS/SNS, and RabbitMQ. Desktop GUI Development 🖥️ Developing sleek and functional desktop interfaces with JavaFX and FXML. Let’s connect and talk about your goals! 🚀

I’m a Senior Software Engineer with extensive experience building scalable, high-performance web applications using Java, Spring Boot, Angular, and Vue.js. I specialize in designing clean, maintainable architectures and delivering end-to-end solutions that meet real business needs. On the backend, I develop robust RESTful APIs and microservices using Spring Boot, ensuring performance, security, and scalability. On the frontend, I create responsive, user-friendly interfaces with Angular and Vue.js that provide seamless user experiences. I also have hands-on experience with AWS, where I deploy, manage, and optimize cloud-based applications using best practices for reliability and cost efficiency. What can I help you with? * Designing and developing full-stack web applications * Building secure and scalable REST APIs * Creating modern, responsive frontend interfaces * Migrating or optimizing existing systems * Cloud deployment and infrastructure on AWS * Debugging, performance tuning, and code optimization I focus on writing clean code, meeting deadlines, and maintaining clear communication throughout the project. Whether you need a complete application built from scratch or improvements to an existing system, I’m here to help you deliver high-quality results. Let’s work together to bring your ideas to life.

Senior Java Software Developer with over five years of experience designing, building, and maintaining scalable backend systems and large web applications . Experienced in Java with strong focus on functional and reactive programming, microservices and multi-module architecture, and event-driven systems using Apache Kafka. Strong background in Spring Boot, Spring Security, Spring Data, Hibernate, and secure API development using REST and SOAP with JSON and XML integrations . Currently contributing to the National Platform of Telemedicine (Italy), developing backend systems for large-scale health data digitalization. Working within a microservices architecture using Java 25, MongoDB, and Apache Kafka, integrating HAPI FHIR for healthcare interoperability, and leveraging Apache Ignite for distributed caching. Involved in backend integrations supporting Machine Learning and Natural Language Processing using Spring AI and OpenAI. Additionally responsible for integration with DICOM servers to manage, retrieve, and process medical imaging data, ensuring secure and standards-compliant handling of radiology and diagnostic images within the healthcare ecosystem. Previously led and developed fiscalization and e-invoicing platforms, including web, desktop, and middleware solutions. Implemented multithreading, concurrency control, performance optimizations, PDF generation, analytics reporting, and secure SOAP-based integrations with external tax authorities Holding a Google Cloud Digital Leader certification, demonstrating validated knowledge of cloud fundamentals, GCP services, and cloud-native principles. Actively expanding expertise in Kubernetes, container orchestration, and CI/CD pipelines to strengthen DevOps capabilities and support scalable, production-grade deployments. Strong academic background with Bachelor’s and Master’s degrees in Computer Science, complemented by hands-on experience with relational and NoSQL databases (PostgreSQL, MongoDB, SQL Server, MySQL, Oracle), Git-based workflows, and modern software engineering practices .

Top Rated Plus | 100% Job Success Score | $70K+ Earned Java & AI Engineer with 13+ years of experience building enterprise-grade backend systems, microservices and AI-powered applications for clients across the US, UK and international markets. As CEO of Soft Standards, I lead a senior development team with hands-on involvement in every project — giving clients both technical depth and business accountability. ━━━ JAVA & BACKEND ENGINEERING ━━━ ✅ Java 8/11/17 + Spring Boot + Spring MVC ✅ Microservices architecture & REST API development ✅ Enterprise system integrations & custom API connectors ✅ MySQL, PostgreSQL, SQL Server database design ✅ AWS & Azure cloud deployment ━━━ AI ENGINEERING ━━━ ✅ AI-powered application development ✅ LLM integration — OpenAI, Claude, Gemini APIs ✅ RAG pipelines & vector database implementation ✅ Chatbot & conversational AI development ✅ Natural Language Processing (NLP) ━━━ ENTERPRISE INTEGRATION ━━━ ✅ System-to-system API integration ✅ Custom connector & adapter development ✅ Real-time bidirectional data sync ✅ 30+ enterprise platform integrations ━━━ NOTABLE EXPERIENCE ━━━ ✅ Principal Software Engineer — Sovereign Health Group (USA) ✅ Software Engineer — Netsol Technologies (Global) ✅ Healthcare IT systems for US medical practices ✅ Enterprise integration connectors for major platforms I deliver solutions that work reliably at scale — with clear communication, fast turnaround and zero compromise on quality. 📌 Available for long-term hourly contracts 📌 Response time: 0-4 hours 📌 Open to contract-to-hire engagements

Senior Java Developer and Backend Architect with 13+ years of hands-on experience designing and building robust, scalable systems across healthcare, logistics, automotive, and marketing domains. I specialize in: Java (SE/EE), Spring Boot, microservices AI: mcp, embeddings, openAI API. AWS: Lambda, S3, CloudFormation, API Gateway Databases: PostgreSQL, Cassandra, Elasticsearch Event-driven architecture: Kafka, SQS CI/CD: Jenkins, GitHub Actions, Docker Frontend (when needed): ReactJS, TypeScript What I bring to your project: * Architecture and implementation of production-ready systems * Fast, reliable backend logic for high-load environments * Clear communication, proactive thinking, and autonomy * Team leadership and mentoring (if needed) * A mix of enterprise-level discipline and startup flexibility Projects I’ve worked on: * A cloud-based ECG diagnostics platform used in real clinical settings (US) * A logistics system with real-time delivery tracking (AWS serverless) * Backend for the IndyCar racing app, streaming telemetry live * A navigation data compiler for BMW infotainment systems * Core services for 'Clutch com', supporting millions of marketing messages daily I’m comfortable joining projects at any stage — from MVP to scaling — and I don’t fear legacy code if the mission is worthwhile. Fluent in written and spoken English. Self-managed, focused on delivery, and easy to work with. Let’s build something solid — I’m open to both short-term work and long-term partnerships.

Greetings! I am a Java Developer with 4 years of experience in Tech. My skills & abilities allow me to cover all aspects of Back-End development: design and develop a robust Back-End part, and then cover the product with Unit Tests. Due to my profound background in app development for industries like Electric Vehicle Charging, I prefer complex and meaningful projects. Invite me for an interview if you feel like I’m the right person to turn your ideas into reality. TECHNOLOGIES I USE ✅ PROGRAMMING LANGUAGES: Java, SQL ✅ FRAMEWORKS: Spring (Spring Data, Spring Boot, Spring Security), Hibernate ✅ DATABASES: MySQL, JDBC, Hibernate ✅ WEB: Servlets, JPS, Tomcat ✅ TESTING: JUnit ✅ Operating systems: Windows, Linux, Unix ✅ OTHER: Docker, Maven, Git, OCPP 1.6 In addition to the above, I possess a solid grasp of Algorithms and Data Structures. Also, I have extensive Functional Testing and Unit Testing skills. API Integration is also among my strongest sides. MY MOST RECENT PROJECTS ✅FinTech system: The main purpose of the system is to simplify the communication between banks and retail customers who want to get a loan for buying goods. The staff at the retail shops use the system to distribute the buyer’s data across multiple banks. That is done to see which bank will accept the buyer’s loan application at the most optimal conditions. I'm worked on the improvement of the existing codebase; integrated the APIs of multiple banks single-handedly; insured the high quality and full test coverage of the codebase ✅EVCS sharing platform for the Swedish company: A platform consists of 2 parts: the first one is for the owners of the Electric Vehicle Charging Stations, who have installed them and would like to open them for the public in order to gain additional profit; the second one is a mobile app for the drivers who would like to navigate to the available chargers nearby, manage the charging process, and pay for charging. On this project, I performed as a Back-End developer. I'm worked on the improvement of the existing codebase; integrated different payment systems & EV Charging station vendors; was responsible for new feature development LANGUAGES I SPEAK Ukrainian is my native language. Besides, I have strong English skills. Most of my previous customers were English-speaking, so I am comfortable communicating in English. MY TEAM I am at ease as an individual contributor, but being a team player works best for me. So I joined Extrawest — an Upwork Top Rated Agency specializing in FinTech and Banking, Gambling and Betting, Food Ordering and Delivery, Logistics and Fleet Management, Medical Insurance and Healthcare, and special software for Electric Vehicles Charging Station networks since 2006. Having most of our resources based in Europe, we’ve been working with customers from over 20 countries (the US, Canada, Australia, most of the EU, South Africa, Singapore, Japan). Hence, it won’t be a problem for us to adjust to your timezone and working schedule. INVITE ME FOR AN INTERVIEW If you feel I’m a perfect match for your project, let’s set up a call, discuss your ideas and streamline your business’s growth! 🟩 🟩 🟩 🟩 My Agency Skills: Front-End (Frontend) Development, Back-End (Backend) Development, Full-Stack (Fullstack) Development, Mobile Development, EV Charging, Automotive, Logistics, Delivery, Food Ordering, FinTech, Finance, Banking, Dashboard, Healthcare, Insurance, Betting, Gambling, Data Scraping, Flutter, Dart, JavaScript (JS), TypeScript (TS), Angular, Vue.js (VueJS, Vue), React.js (ReactJS, React), Node.js (NodeJS, Node), Java, Spring, SpringBoot, Hibernate, Python, Django, Scrapy, Quality Assurance (QA), Manual Testing, Automated Testing, Selenium, UI/UX Design, User Interface (UI), User Experience (UX), Figma, Adobe Creative Cloud, DevOps, MySQL, PostgreSQL, MongoDB, Firebase, Docker, Amazon Web Services (AWS), Google Cloud Platform (GCP), Project Management (PM).

Highly skilled systems architect and developer with more than 40 years of experience designing, developing, deploying and integrating applications, from old single platform “green-screen” to multi-tier / distributed systems. Business experience in manufacturing, accounting, distributing, payroll, finance and TELCO: ✔ Strong knowledge of Java SE and JEE stacks, from early versions 1.x up to latest version SE 17 and JEE 10 including Spring and Spring Boot. ✔ Deep understanding of old technologies such COBOL, VSAM, JCL, IMS, DB2, IMS “green screen”, etc. This knowledge allowed me to design, code and implement integrations between new applications with legacy ones. ✔ Solid leading and mentoring skills to help and encourage individuals to maximize their productivity by applying the best practices, frameworks, libraries and technology in general. ✔ I'm always learning about new technologies and tools to ease and reduce time spent in application development and deployment. Technology by itself is worth nothing if it does not solve real world problems.

Backend & API Integrations Engineer — Java/Spring Boot, Node.js/NestJS, and the third-party integrations most teams don't want to touch (QuickBooks, Xero, payments, accounting). I build and stabilize reliable backends: clean REST APIs, microservices, and integrations that actually stay in sync. 8+ years of backend experience and 2,700+ hours delivering systems that handle high traffic and financial/inventory workflows. Where I help most: - API & platform integrations — QuickBooks Online & Xero (OAuth2, tokens, webhooks, sync, reconciliation), cXML purchase-order flows, and payment/accounting platforms - Microservices — designed and maintained 32+ services with CI/CD + Docker, improving uptime and cutting deployment time - Backend rebuilds — refactored legacy systems into scalable services with measurably higher throughput - Security — JWT, Spring Security, and Auth0 authentication/authorization - Reliability — async processing with Kafka/SQS, idempotency, retries, and rate limiting, backed by tests (JUnit, Mockito, Testcontainers) Tech I work with: Java, Spring Boot, Node.js, NestJS, Python, PostgreSQL, MySQL, MongoDB, MariaDB, Redis, DynamoDB, Docker, Apache Kafka, AWS SQS, REST, gRPC. How I work: I start with a short review of your current code/architecture, then give you a clear plan, timeline, and checkpoints — so you always know what's happening and what comes next. If you're dealing with a fragile backend, a stalled integration, or you need a new API built right the first time, send me a message describing what you're trying to achieve and I'll reply with a concrete next step. — Samson

Transforming Complex Business Challenges into Scalable, AI-Powered Realities. I help startups and businesses build scalable AI-powered web and mobile applications that automate workflows, improve customer experience, and drive growth. With 14+ years of experience in Full-Stack Development and AI Integration, I specialize in building intelligent platforms using Gemini 2.5, LLMs, Java, Laravel, Angular, Flutter, and cloud-native architectures. 🚀 AI & Automation Expertise • Gemini 2.5 (Flash/Nano) & LLM integrations • AI Agents & workflow automation • Conversational AI & business assistants • Text-to-image generation & AI media processing • Prompt engineering & multi-step AI workflows • AI-powered SaaS platforms & customer support systems 💻 Full-Stack Development • Frontend: Angular, React, JavaScript, TypeScript • Backend: Java (Spring Boot), Laravel, PHP APIs, Node js, Next js • Mobile Apps: Flutter, React Native • Databases: MySQL, MongoDB, Firebase • Cloud & DevOps: AWS, Docker, Serverless Architecture 💼 Solutions I Build • AI-powered business automation tools • SaaS platforms & admin dashboards • E-commerce & multivendor marketplaces • CRM & lead management systems • Logistics & payment gateway integrations • Cross-platform mobile applications ⚡ What Clients Value • Clean, scalable architecture • Fast communication & reliable delivery • Strong problem-solving skills • CTO-level technical thinking • Long-term product scalability focus I focus on building systems that reduce manual work, automate operations, and create measurable business impact. If you're looking for an experienced AI + Full-Stack developer who can turn ideas into production-ready applications, let’s connect.

If you're building a serious product and need it done right the first time you're in the right place. I’m a Senior Full Stack Java Developer with 10+ years of experience designing and building scalable, high-performance applications using Spring Boot, Microservices, and modern frontend frameworks like React and Angular. I don’t just write code I help you architect, build, and scale systems that are production-ready and future-proof. 💼 What I Can Help You With: ✔️ Design & development of scalable backend systems (Spring Boot, Microservices) ✔️ Building secure, high-performance REST APIs ✔️ Full-stack development with React / Angular ✔️ System architecture & database design for long-term scalability ✔️ Cloud deployment on AWS (EC2, S3, RDS, Lambda) ✔️ Performance optimization & code refactoring ✔️ Third-party API integrations (payments, messaging, etc.) 🧠 Modern Edge (AI + Automation) I also help businesses leverage AI to improve workflows and products: • OpenAI / ChatGPT integrations • LangChain-based automation & document processing • Workflow automation using Zapier / Make • AI-powered features (chatbots, search, RAG systems) ⚙️ Tech Stack (Focused & Relevant) Backend: Java, Spring Boot, Spring Security, Microservices Frontend: React, Angular, JavaScript, TypeScript Database: PostgreSQL, MySQL, MongoDB, Redis Cloud & DevOps: AWS, Docker, Kubernetes, CI/CD Messaging: Kafka, ActiveMQ 💡 Why Clients Work With Me: • I write clean, maintainable, production-grade code • I think like an architect, not just a developer • I communicate clearly and don’t disappear mid-project • I focus on long-term value, not quick fixes If you’re looking for someone reliable who understands both business and technology, let’s talk.