Hire the Best Java Developers
in Argentina

Hi! I'm Darío Alessandro Plaza León, a dedicated software developer with a strong passion for technology and continuous learning. My commitment to honesty and a genuine desire to assist others sets me apart, both in professional and personal settings. I approach every project with enthusiasm, always striving to find the best solution. If you’re looking for someone who brings not only technical expertise but also a 𝗽𝗼𝘀𝗶𝘁𝗶𝘃𝗲 𝗮𝗻𝗱 𝗰𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝘃𝗲 𝗮𝘁𝘁𝗶𝘁𝘂𝗱𝗲, I’m ready to help bring your ideas to life. I specialize in backend development with Java (Spring Boot), and build full-stack apps using modern frameworks like React. I’m also open and capable of working across different platforms — 𝘄𝗲𝗯, 𝗱𝗲𝘀𝗸𝘁𝗼𝗽 𝗮𝗻𝗱 𝗺𝗼𝗯𝗶𝗹𝗲 — using modern tools and rapid learning when needed. I’ve worked across various industries: booking platforms, internal tools, SaaS apps and automation systems, always focused on building clean, scalable and high-impact software. 𝗪𝗛𝗔𝗧 𝗠𝗔𝗞𝗘𝗦 𝗠𝗘 𝗗𝗜𝗙𝗙𝗘𝗥𝗘𝗡𝗧 - Full-time availability for fast development and real progress - Open to any platform or framework – I learn fast and deliver fast - Strong backend fundamentals with secure and scalable design - Honest, proactive, and focused on client success I’m ready to bring your project to life.

As a Director of Technology, Leonardo combines deep technical expertise with strategic leadership. He excels at building resilient backends, driving architecture decisions, and aligning technology with business goals. Leonardo is a Senior Java Developer and AWS Certified Solutions Architect with 15+ years of experience designing cloud-native systems and leading cross-functional teams. He has delivered scalable, mission-critical platforms for high-growth startups and enterprises across Latin America. 🔹 Java, Spring Boot, REST APIs, Hibernate, Maven, Gradle 🔹 AWS (EC2, S3, Lambda, Route 53, CloudFront, IAM, CloudWatch, ECS, ECR, Load Balancers) 🔹 Microservices, RabbitMQ, asynchronous/event-driven architecture 🔹 MySQL, PostgreSQL, SQL optimization, Redis, Liquibase 🔹 CI/CD pipelines, Docker, Git, Bash scripting, Linux administration 🔹 Reporting & analytics: Tableau, Power BI, MyDBR, complex SQL views 🔹 Team leadership, agile delivery, digital transformation, mentoring tech teams

🚀 Experienced Java Developer and Full-Stack Web Developer Hello! I am a Java developer with expertise in the Spring framework. While my core focus is backend development, I also build user interfaces using modern frontend technologies, primarily React with TypeScript. I design and develop software solutions by implementing scalable and maintainable architectures that address business needs and support long-term growth. 👨‍💻 Technical Skills: Backend Development: Java, Spring Framework, Spring Security, RESTful API Frontend Technologies: JavaScript, TypeScript, React, HTML, CSS, Tailwind Database Management: JPA Hibernate, MySQL. 💡 What I Bring to the Table: Full-Stack Proficiency: I am not just limited to backend development; I bring a holistic approach to projects by seamlessly integrating frontend and backend technologies. Problem Solver: I thrive on solving complex problems and architecting solutions that are both elegant and efficient. Agile Development: Adapting to change is essential in the tech world, and I am well-versed in Agile methodologies to ensure flexibility and efficiency in project delivery. 🌐 Why Work With Me: Client-Centric Approach: Your project's success is my top priority, and I am dedicated to delivering solutions that exceed your expectations. 📈 Let's Build Something Amazing: If you are looking for a skilled and reliable developer with a passion for innovation, I am excited to collaborate on your next project. Let's turn your ideas into reality and create something extraordinary!

Hello! My name is Alexander, and I can provide you high-quality software. I have 10 years of experience in software development. I primarily work with: - Java, Python - Clouds: AWS, GCP - HTML, CSS, Javascript - Twitter Bootstrap, Spring, Bottle Py - MySQL, Postgres - OS Linux

I'm a SaaS Product Lead with 10+ years in UX/UI & Development — I scope, direct, and own full-stack SaaS delivery. Behind every project is a vetted senior team (UX/UI, React, Next.js, Node.js, TypeScript, Supabase) that I personally supervise end-to-end. 🚀 What you're hiring when you hire me: Product clarity + UX architecture + full-stack SaaS execution. Not a solo developer. A lead who owns outcomes. 🎯 Clients come to me when: * They need an MVP launched without over-engineering it * Their dashboard works technically but users can't navigate it * Their SaaS product needs stronger UX before they can sell enterprise * They've outgrown a solo freelancer but aren't ready to hire in-house 🛠 I lead the full delivery: * Product discovery * Information Architecture * Dashboard UX * RBAC and permission flows * API integrations * admin panels * design-to-code handoff — executed by a senior React / Next.js team. 🎯 Best-fit projects: * SaaS MVPs * Analytics dashboards * Client portals * Internal tools * FinTech platforms (Banking platforms / apps, Trading platforms / apps, Investment platforms / apps, Accounting / Bookkeeping / Tax Management platforms, Mortgage / Brokerage platforms) * Healthcare / HealthTech apps * Real Estate / PropTech portals * AI-enabled SaaS * Complex Engineering platforms (Construction / Manufacturing / Industrial Machinery Manufacturing) * Data Science & Data Analytics platforms * Marketing / MarTech platforms * Industrial Automation / IoT platforms (Sensor Tech, Condition Monitoring Systems, Inventory Platforms, Equipment Monitoring System, Industrial Machinery Manufacturing, etc.) * Cybersecurity platforms * Logistics / Supply Chain / Intralogistics platforms / Transportation Management Systems (TMS) for Freight and Shipping * Energy Supply / Renewable Energy / Green Energy / Carbon Footprint platforms 💬 If you want a development lead who takes full ownership — not just a coder who waits for instructions — let's talk.

Full Stack Engineer | React + Spring Boot + AWS | Enterprise-grade systems, startup speed. Helped Fortune 500 ship faster. Microservices, cloud, AI integration. I have a proven track record of delivering robust, scalable systems on tight deadlines for large enterprises. I work async, communicate clearly, and deliver without hand-holding. Recently migrated services to java 21 and automated a revenue recognition flow for Disney. Before that delivered an ecommerce system for Caterpillar. Extensive experience with complex systems and interdisciplinary teams. I can manage teams as well. Full Stack implementations with React frontends + Spring Boot 3 backends + AWS infrastructure — I handle event-driven architecture microservices, CI/CD pipelines and cloud deployments. Need a system that grows with your business? Let's talk.