I am a skilled core developer with six years of experience in Java and front-end development. My expertise spans multiple industries, including technology and healthcare, where I've successfully delivered complex applications. I specialize in architecting scalable solutions that enhance performance and user experience. Throughout my career, I have contributed to various projects, collaborating with teams to overcome challenges and drive innovation. Whether it’s fine-tuning existing systems or building new features from scratch, I ensure high-quality results tailored to client needs. If you're looking for a reliable developer who can translate your vision into functional, user-friendly applications, let's discuss how I can add value to your project.

I build enterprise Java, Angular, and Stripe fintech systems 𝟑-𝟓𝐱 𝐟𝐚𝐬𝐭𝐞𝐫 using AI/𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞 - Top Rated developer with $100K+ earnings. I specialize in Java/Spring Boot, Angular, and React for enterprise applications, fintech platforms, and payment integrations (Stripe Connect). I use Claude Code (AI-assisted development) to deliver enterprise-quality code 𝟑-𝟓𝐱 𝐟𝐚𝐬𝐭𝐞𝐫 than traditional development, without sacrificing code quality or test coverage. 𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐦𝐞, 𝐲𝐨𝐮 𝐰𝐢𝐥𝐥: - Get fast response and clear communication - Beautiful and reusable code, intuitive and functional interfaces, applying all best practices - A developer familiar with DevOps practices and CI/CD pipelines - Developer who leverages AI/Claude code to deliver faster and better quality 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬: - $100,000+ successful Upwork delivery with 90% Job Success Score - 38 enterprise projects with consistent 5-star client reviews - Fortune 500 experience: BNP Paribas, Fujitsu, Accenture - 9+ years specializing in Java/Spring Boot and Angular for enterprise fintech and trading systems Recent Enterprise Success: Led complete platform modernization for a Portuguese marketplace - migrated from SIBS payment system to Stripe Connect, enabling global expansion and automated revenue sharing. Enterprise Specializations: - Java/Spring Boot microservices for enterprise applications - Angular/React frontend development with modern frameworks - Real-time data processing with Apache Kafka - AWS/GCP cloud infrastructure and DevOps - Payment system integrations: Stripe Connect, SIBS, international expansion - AI-assisted development delivering 3-5x faster results with Claude Code - Experience with Remotion, creating video programmatically Proven Business Impact: - International marketplace expansion via Stripe Connect - Real-time order processing systems handling daily enterprise transactions - Mission-critical banking applications with 99.9% uptime requirements - Firebase authentication with custom security for enterprise compliance For larger projects: Also runs Limitless GMTech Solutions, a talent agency providing pre-vetted developers for international clients at competitive EU rates. Search "Limitless GMTech Solutions" on Upwork.

⚡ 𝗧𝗵𝗲 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝗯𝗲𝗵𝗶𝗻𝗱 $𝟱𝟬𝗠/𝘆𝗲𝗮𝗿 𝗶𝗻 𝘁𝗿𝗮𝗻𝘀𝗮𝗰𝘁𝗶𝗼𝗻𝘀, 𝟱𝟬𝟬𝗞 𝘂𝘀𝗲𝗿𝘀, 𝗮𝗻𝗱 𝗔𝗽𝗽𝗹𝗲-𝗴𝗿𝗮𝗱𝗲 𝘂𝗽𝘁𝗶𝗺𝗲. Senior backend engineer (Java, Spring Boot, Python) with AI built in. 4,100+ hours, $100K+ earned, 100% Job Success, and enterprise delivery for Apple, PepsiCo, Vodafone, and Walmart. 👋 𝐇𝐢, 𝐈'𝐦 𝐆𝐨𝐩𝐚𝐥 𝐒𝐚𝐛𝐡𝐚𝐝𝐢𝐲𝐚. I've spent 13+ years in software engineering, and I've become the engineer teams trust when the backend simply cannot fail. I'm Expert-Vetted on Upwork (top 1%), Top 3% on Toptal, and a former Specialist Programmer at Infosys (their top 1%), where I built for Apple, British Petroleum, Vodafone UK, and Walmart. Right now I'm Tech Lead on a 500,000-user platform at US Pharmacopeia and a sustaining engineer on PepsiCo's GenAI ordering system through Toptal. What that means for you: you're not handing your product to someone learning on your budget. You're getting an engineer who has already shipped the hard version of what you're trying to build. ⚙️ 𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗 🔹 AI-integrated backends. RAG, LLM and agent workflows, vector search, wired into real Java or Python systems with Spring AI, LangChain, and the OpenAI and Anthropic APIs. Production, not demos. 🔹 Microservices that scale. Java 17/21 and Spring Boot, brittle monoliths broken into services that hold up under load. (Recently: a Java 8 to 25 migration with zero downtime.) 🔹 SaaS and FinTech platforms. Multi-tenant, zero-trust auth, payment and ledger logic that reconciles to the cent, audit trails, and the test pipelines that keep regressions out. 🔹 Full-stack when you need it. FastAPI, Flask, React and Next.js on top, so one engineer owns the whole arc from schema to screen. 📊 𝗪𝗛𝗔𝗧 𝗜'𝗩𝗘 𝗦𝗛𝗜𝗣𝗣𝗘𝗗 (𝗔𝗡𝗗 𝗪𝗛𝗔𝗧 𝗜𝗧 𝗥𝗘𝗧𝗨𝗥𝗡𝗘𝗗) ✓ $50M a year moves through a FinTech ledger I built. 99.99% accuracy, reconciles to the cent. ✓ 500,000 users sign in through a zero-trust auth platform I architected at US Pharmacopeia. ✓ 2,500+ venues run on Bar.Stream, where a human-in-the-loop RAG engine I built replaced manual product classification, and 200+ automations replaced manual data entry. ✓ 100% invoice-parsing accuracy from an AI agent I built for MPI, manual reconciliation gone. ✓ 60% faster APIs and zero-downtime modernization for 50,000+ educators on KigaPortal. ✓ 75% more API throughput on Apple's repair backend. Few engineers can put Apple, PepsiCo, a $50M ledger, and production AI on one page. I can, and I can walk you through the architecture and the numbers behind every one. 🛠️ 𝗦𝗧𝗔𝗖𝗞 Java · Spring Boot / Cloud / Security / AI · Python · FastAPI · Node.js · RAG · LangChain · LLM + vector databases · OpenAI + Anthropic · PostgreSQL · MySQL · MongoDB · Elasticsearch · AWS · GCP · Docker · Kubernetes · CI/CD · microservices · event-driven 🌟 𝗛𝗢𝗪 𝗜 𝗪𝗢𝗥𝗞 You work directly with me. Not an agency, not a rotating team, and not a junior building it while a senior name sits on the invoice. I take your idea from a rough brief to a written spec, then I build it: architecture, code, the hard parts, and the reviews. I've carried year-long builds end to end on my own, so nothing gets lost in a handoff. I keep it efficient. You get working software and a clear weekly update, not a week full of standups. I'm on a call when it actually matters, and when something is at risk you hear it from me early, before it breaks. You set direction, I run the build. 📩 𝗟𝗘𝗧'𝗦 𝗕𝗨𝗜𝗟𝗗 𝗜𝗧 Send me a short note: what you're building and where it's stuck. Within a day you'll get a straight read back, how I'd approach it, the first risk I'd kill, and the one question I'd want answered before we start. If I'm not the right engineer for it, I'll tell you that too. RAG Development#LLM Integration#Retrieval Augmented Generation#Large Language Model#AI Backend#AI-Powered SaaS#AI Backend Architecture#AI-Powered Applications#Intelligent Backends#AI Integration#AI Automation#AI Agent Development#AI Observability#Machine Learning Systems#Model Optimization#Prompt Engineering#Semantic Search#Vector Database#Vector Embeddings#Hybrid Search#Knowledge Graph#Information Retrieval#Data Pipeline#Python Backend#Java Backend#Java Microservices#Spring Boot Microservices#Spring Boot#FastAPI#Microservices Architecture#Event-Driven Architecture#Distributed Systems#Scalable Microservices#Cloud Architecture#Cloud-Native SaaS#Kubernetes Deployment#Docker Containerization#API Development#REST APIs#REST Architecture#GraphQL APIs#gRPC#API Gateway#Multi-Tenant Architecture#Multi-Tenant SaaS#B2B SaaS#Enterprise SaaS#SaaS Backend Architecture#SaaS Infrastructure#Subscription Platform#High-Performance Backend#Sub-Second Latency#Infrastructure Optimization#Latency Optimization#LLM Cost Optimization#Token Efficiency#Cost Reduction Architecture#OAuth2 Implementation#OAuth2 Authentication#JWT Authentication#RBAC Architecture#Authentication & Security#Encryption-at-Rest#SOC2

I am an experienced Java Software Engineer with extensive experience in building high-performance, scalable, and secure applications. My expertise spans backend development, microservices architecture, middleware solutions, and cloud-based applications. I have worked with leading telecom, education, and enterprise clients, developing robust solutions that enhance system efficiency and user experience. I specialize in designing and developing enterprise-grade applications using Java, Spring Boot, Hibernate, Kafka, and cloud technologies. My deep understanding of software engineering best practices, coupled with my problem-solving skills, ensures that I deliver high-quality solutions tailored to client needs. Services I Provide: ✅ Java Backend Development Developing robust, scalable, and high-performance backend solutions. Expertise in Spring Boot, Spring Data JPA, Hibernate, and RESTful APIs. ✅ Microservices Architecture & Middleware Solutions Designing and implementing microservices-based architectures. Building middleware solutions to support service-oriented architecture (SOA). Integrating RESTful and SOAP services for seamless system communication. ✅ Database Design & Optimization Working with relational (MySQL, SQL Server, Oracle) and NoSQL databases (MongoDB, Redis). Database performance tuning and query optimization. ✅ Event-Driven & Real-Time Processing Implementing Apache Kafka for real-time data streaming and event-driven architectures. Building efficient pub-sub messaging systems for high-throughput applications. ✅ Cloud & DevOps Integration Deploying and managing applications on MS Azure and Docker. Setting up CI/CD pipelines, version control with Git, and automated deployments. ✅ Security & Authentication Implementing Spring Security, OAuth2, and Keycloak for secure authentication. Ensuring application security and compliance with industry standards. Why Work With Me? ✔ 8+ years of industry experience in software development. ✔ Proven track record of delivering enterprise applications. ✔ Strong problem-solving and analytical skills. ✔ Efficient communicator and collaborative team player. Let’s discuss how I can help you build and optimize your next project. Feel free to reach out!

Full Stack Java Engineer with 5+ years of experience building scalable, production-grade systems for logistics, food delivery, and enterprise platforms. I specialize in Spring Boot microservices architecture and AI-powered backend systems — designing end-to-end solutions that handle high traffic, complex workflows, and real-time data processing. My background in logistics technology means I understand not just the code, but the business operations behind it. What I bring to your project: - AI integration using OpenAI, Gemini, and LangChain4j for intelligent automation and chatbot backends - Microservices architecture with Spring Boot and Spring Cloud - Event-driven systems using Apache Kafka and RabbitMQ - Full stack development with React.js and Vue.js frontends - REST API design, development, and third-party integrations - AWS infrastructure — EC2, RDS, S3, deployment pipelines - Database design and optimization across MySQL, PostgreSQL, and Oracle - JWT-based authentication and Spring Security - Legacy system migrations and monolith-to-microservices transitions - Docker, CI/CD pipelines, and production deployment I have built and maintained systems processing hundreds of thousands of records daily — including a 2.5-year long-term engagement delivering a full-stack logistics and food delivery platform on AWS, earning a 5.0 rating across every review. I do not disappear after handing over code. I ask the right questions before starting, communicate clearly throughout, and flag issues before they become problems. Clients who work with me once tend to come back. 100% Job Success Score across every contract on Upwork. If you need a reliable full-stack engineer who builds intelligent, scalable systems — let's talk.

📢 Available for new projects 📢 I am a Senior Backend Developer with over 10 years of commercial experience, focused on building scalable, secure, and high-performance backend systems that power modern web and mobile applications. As a dedicated professional, I work with complex architectures where reliability, performance, and long-term maintainability are critical. I help businesses transform ideas into robust products by applying proven software engineering practices and deep expertise in backend development, cloud infrastructure, and system design. My primary focus is backend development using Node.js, TypeScript, PostgreSQL, and cloud-native technologies. I specialize in designing APIs, microservices, distributed systems, and scalable data architectures capable of supporting growing products and high user loads. Alongside strong backend expertise, I have solid Full Stack experience. This allows me to efficiently collaborate across the entire product lifecycle, from database design and server-side logic to frontend integration and user-facing features. I understand how all layers of an application work together, enabling balanced technical decisions and faster product delivery. Throughout my career, I have worked across Fintech, AI, EdTech, Healthcare, and Retail industries. I’ve contributed to SaaS platforms, enterprise systems, and custom software solutions, consistently maintaining high engineering standards and delivering reliable business outcomes. My Go-To Tools: Backend: Node.js, TypeScript, NestJS, Express.js Databases: PostgreSQL, MongoDB, Redis Cloud & DevOps: AWS, Docker, Kubernetes, CI/CD Architecture: REST APIs, GraphQL, Microservices, Event-Driven Systems Frontend (Full Stack): React, Next.js, JavaScript, TypeScript Design & Collaboration: Figma, Agile, Product Development 💬 I am ready to start work right now — just drop me a message!

✅ 10+ Years of 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 Java Development Experience ⚡ Full-Cycle Development & 𝐀𝐈-𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠 ⚡ Experience Building 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐬, 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭𝐬, 𝐚𝐧𝐝 𝐋𝐋𝐌-𝐄𝐧𝐡𝐚𝐧𝐜𝐞𝐝 𝐀𝐩𝐩𝐬 👀 Click Hire or Invite a Senior Java Developer & Software Architect Looking for a Java Developer who can build not just software, but scalable products designed for thousands of users and long-term business growth? For 10+ years, we've helped startups, SaaS companies, fintech organizations, and enterprise businesses transform ideas into production-ready systems. From Java Backend platforms to Full Stack Java applications and 𝐀𝐈-powered products, we deliver software built to scale. 👉 WHAT YOU GET ✔️ Senior Java Developer expertise backed by 10+ years of experience and 2,000+ successfully completed projects. ✔️ Java Backend Developer capabilities spanning architecture, development, deployment, optimization, and long-term support. ✔️ Full Stack Java Developer experience delivering end-to-end products using Java, React JavaScript, Angular, and modern frontend technologies. ✔️ Java Architect guidance focused on maintainability, scalability, and measurable business outcomes. 🏆 ACHIEVEMENTS ✔️ 10+ years building Java EE applications, enterprise systems, SaaS platforms, and fintech products. ✔️ 2,000+ successful engagements supporting startups and enterprise organizations. ✔️ 100,000+ end users served through scalable backend infrastructures and business-critical applications. ✔️ Up to 40% faster delivery enabled through AI-enhanced development workflows and automation. ✔️ Up to 50% performance improvements achieved through backend optimization, caching, and architecture modernization. ✔️ Multi-year partnerships supporting product evolution and continuous innovation. 🚀 WHERE I DELIVER ✔️ As a Java Developer with 5 years of experience and Senior Java Developer, I build Java Backend solutions using Java, Spring Boot, Java Spring Boot, Spring Framework, Spring Data, Spring Security, Hibernate, and JPA. ✔️ As a Java Architect 5+ years, I design scalable Software Architecture using DDD, SOLID, GRASP, Enterprise Patterns, TDD, and Agile methodologies. ✔️ As a Full Stack Java Developer 6+ years, I combine Java React, React JavaScript, JavaScript Developer expertise, HTML, CSS, TypeScript, Angular, and React to deliver complete products. ✔️ As a Python Developer and Web Developer 5+ years, collaborator, I support cross-functional teams building integrated enterprise ecosystems. ✔️ As an Android Java specialist, I contribute to Android Java initiatives and mobile backend integrations when required. ⚙️ CORE JAVA ECOSYSTEM ✔️ 10+ years of expertise with Spring Boot, Java EE, Hibernate, JPA, Maven, Gradle, JUnit, Git, and CI/CD pipelines. ✔️ 8+ years working with PostgreSQL, MySQL, MariaDB, MongoDB, Redis, Memcached, and scalable database architectures. ✔️ 7+ years implementing RabbitMQ, Kafka, ActiveMQ, asynchronous messaging, and event-driven systems. ✔️ 5+ years building modern frontend experiences using React JavaScript, Angular, JavaScript, and TypeScript. ✔️ Experience with JavaFX, Kotlin, Groovy, Grails, and Java Kotlin Developer initiatives across diverse business domains. ✔️ Strong AWS expertise delivering cloud-native Java AWS deployments and secure infrastructure solutions. 🤖 AI-ENHANCED ENGINEERING ✔️ 5+ years leveraging AI-assisted development to accelerate delivery by up to 40%. ✔️ 3+ years AI-native workflows improving prototyping, debugging, testing, and code quality. ✔️ Prompt engineering, agentic coding systems, and human-in-the-loop AI practices enhancing productivity. ✔️ OpenAI integrations, AI automation, and intelligent workflows supporting next-generation products. 🏢 INDUSTRY IMPACT ✔️ Nationwide caregiving platforms connecting thousands of users and providers. ✔️ Online banking and fintech systems supporting secure transactions and regulatory requirements. ✔️ Precious metals trading solutions optimized for performance and reliability. ✔️ Hospitality platforms improving operational efficiency and customer experiences. ✔️ Workflow automation engines reducing manual effort and increasing productivity. ✔️ Contributions to Apache Fineract initiatives supporting financial technology innovation. 🚀 WHY CLIENTS CHOOSE US ✔️ 10+ years of Java and Full Stack expertise.✔️ 2,000+ successfully completed Upwork projects.✔️ Experience serving clients across 20+ countries. ✔️ Full-cycle delivery from concept to deployment.✔️ Production-ready code built for scale and maintainability. ✔️ Transparent communication and long-term partnership mindset. Looking for a Java Developer, Java Backend Developer, Senior Java Developer, Full Stack Java Developer, Java Architect, Java AWS expert, JavaScript Developer, Python Developer, or a trusted engineering partner who can modernize legacy systems, build enterprise products, and integrate AI capabilities.

Spring Boot Specialist | 7+ Years of Experience | Microservices | Event-Driven Architecture I’m a seasoned Java Backend Developer with over 7 years of hands-on experience in designing, developing, and deploying scalable RESTful APIs and microservices using Spring Boot and the Java ecosystem. 🛠️ I’ve architected and delivered robust enterprise applications used in banking, finance, and retail — handling everything from database modeling to CI/CD automation and cloud deployments on AWS and on-prem environments. 🔍 What I bring to the table: 💡 End-to-end API development with Spring Boot, JPA, and Hibernate 🔁 Kafka-based event-driven systems for high-volume processing 🧪 Quality-focused development with 90%+ unit test coverage, SonarQube, and Cypress 🚀 CI/CD pipelines with Jenkins, Docker, and Gradle 🛡️ Secure systems using JWT, OAuth2, and role-based access control ☁️ Experience deploying Microservices on AWS EC2, S3, Lambda, and Docker Compose setups 🧪 My tech solutions have powered: ✔️ Chat-based web platforms using WebSockets and STOMP with real-time messaging ✔️ E-commerce backend APIs including product catalog, cart, and checkout modules ✔️ NetSuite integrations for syncing orders, inventory, and CSV file processing ✔️ Tax calculation integration within e-commerce checkout flows ✔️ Advanced cart and discount logic, including promo codes and gift card redemption ✔️ Swagger/OpenAPI documentation for seamless API consumption ✔️ Multi-locale & translation-ready APIs using Google Cloud Translation API ✔️ Gift card system development: both Customer-to-Customer and Business-to-Customer models ✔️ Robust scheduling features for email delivery and status updates Skills : Java Spring Boot Spring Batch Spring Data JPA REST API Development Apache Kafka Microservices Architecture Event-Driven Architecture AWS (EC2, S3, Lambda) Docker & Docker Compose Jenkins CI/CD OAuth2 & JWT PostgreSQL / MySQL / Oracle MongoDB / DynamoDB JUnit 5 & Mockito SonarQube Swagger & Postman Liquibase / Flyway GitLab / Bitbucket / Git System Design Clean Architecture

I am a Java Developer with about 4 years of experience in the IT industry. During this period, I have been mainly focused on Backend Development for Accounting software and software for Telco companies. Therefore robust high-load backend functionalities with the best data security practices implemented are the tasks I’ve dealt with regularly. TECH STACK ✅ PROGRAMMING LANGUAGES: Java ✅ FRAMEWORKS/LIBRARIES: Spring (Data, Streaming, MVC, Spring events), Hibernate, Dropwizard, Kafka ✅ DATABASES: RDBMS (PostgreSQL, MySQL), MongoDB ✅ TESTING TOOLS: JUnit, Cucumber ✅ OTHER: Maven, CI/CD, Splunk, Sonar, Docker, GCP, Google Drive API, REST API, Swagger (Open API), CI/CD, EV OCPI and OCPP protocols ✅ Clouds: GCP, AWS (SES, EC2, SQS) PORTFOLIO My most recent projects: ✅ Open Source OCPI Library for roaming solutions. This framework offers a ready-made Open Charge Point Interface Protocol 2.2.1 implementation for the smooth interaction of different EV charging service providers. Tech stack: Java 17, javax.validation, Swagger (OpenAPI), MapStruct, Lombok. ✅ Polish EV charging SaaS system for charge point operators and e-mobility service providers. Its key features are multiple user roles, multiple currencies, flexible tariff management, and full compatibility with OCPP 1.6. Tech stack: Kafka, MongoDB, PostgreSQL, Spring Data JPA (specification), Microservices. ✅ Accounting software. Versatile projects for a Canadian company that provides accounting software solutions for governmental institutions and private companies. Tech stack: Java, GCP, PostgreSQL, MySQL, Mongo, Google Drive API, JavaScript, Angular. ✅ Telecommunication software. Versatile projects for one of the largest Telecommunication companies in Ukraine. The mobile network operator I worked for covers 98% of the country’s territory and serves 13.6 million customers. Tech stack: Java, REST API, ServiceMix microservices, JUnit, Gitlab, Jenkins CI, Hazelcast. ✅ Travel portal. A deal aggregator for everything related to traveling - car rentals, hotel bookings, flight ticket reservations, and tours. The service was used by more than 9.5 million unique visitors and had 91 million pageviews per month. Tech stack: Dropwizard, Splunk, RESTful Microservices, Hibernate, Docker, Chef, Hazelcast Cache, Guava Cache, Oracle DB, Maven, Jenkins CI/CD. 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, E-Commerce, E-Learning, Medical Insurance and Healthcare, and special software for Electric Vehicles Charging Station networks since 2006. Having most of our resources located in Europe, we’ve been working with customers from over 20 countries (the US, Canada, Australia, most of the EU, and 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 like I’m a perfect match for your project, invite me and let's turn your creative ideas into reality! My Agency Skills: Front-End (Frontend) Development, Back-End (Backend) Development, Full-Stack (Fullstack) Development, Mobile Development, eMobility, Electric Vehicles (EV) Charging, EV Charging Station Management, Open Charge Point Protocol (OCPP), Open Charge Point Interface (OCPI), Automotive, Logistics, Delivery, Food Ordering, Healthcare, Betting, Gambling, Data Scraping, Flutter, Dart, JavaScript (JS), Angular, Vue.js (VueJS, Vue), React.js (ReactJS, React), Node.js (NodeJS, Node), Java, Spring, SpringBoot, Hibernate, Python, Scrapy, Quality Assurance (QA), Manual Testing, Automated Testing, Selenium, 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).

My name is Saul Hidalgo, a Computer Engineer with a passion for developing Java and .Net software. I have been fortunate to work with exceptional teams and have had the opportunity to contribute to various sectors, including National Security/Defense in the United Kingdom, Oil companies, and Universities such as Harvard Business Publishing. The software I have created is currently being successfully utilized by these organizations. I thrive on new challenges and continuously seek opportunities to expand my skills. You can explore my public contributions on my GitHub account: saulhidalgoaular. Below are my areas of expertise and skills: 1. Code Translation and Conversion: - Proficient in translating code across various languages, with expertise in Python, Java, Delphi, C++, and C#. 2. Document Management System (DMS) - OpenKM: - Extensive experience in developing workflows, automations, cron tasks, and integrations using the Java/PHP API. - Configuration of daily backups. - Skilled in utilizing OpenKM as a DMS. 3. Algorithms and Programming: - Strong command over algorithms and programming skills, particularly in C/C++ and Java. - In-depth knowledge of data structures, strings, sorting, arithmetic and algebra, combinatorics, number theory, backtracking, graph traversal, algorithms for graphs, dynamic programming, and computational geometry. 4. Accounting: - Well-versed in managing material movement between stores and shops. - Proficient in handling retail-related accounting tasks. 5. Point of Sale (POS) Area: - Experience in integrating POS software with label printers, fiscal printers, barcode readers, fingerprint scanners, and keyboards.