Hire the Best Java Developers in Florida

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Oleksandr M.

Wesley Chapel, Florida

$85/hr
5.0
88 jobs

I’m a senior software engineer and technical lead with 20+ years of experience building, integrating, modernizing, and supporting production software. On Upwork, I’m Expert-Vetted with a 100% Job Success Score, $200K+ earned, 78 completed jobs, and more than 4,200 hours delivered. My strongest areas are: • Java, Spring Boot, Hibernate, JUnit • Backend architecture, REST APIs, integrations, and distributed systems • JavaScript, TypeScript, and React • SQL and NoSQL databases (PostgreSQL, MySQL, MS SQL, MongoDB) • AWS, Google Cloud Platform, and Microsoft Azure • Docker, Kubernetes, CI/CD, and infrastructure automation • Legacy-system modernization and incremental refactoring • Architecture reviews, code audits, debugging, and technical rescue • Security, scalability, performance, and production reliability • AI integrations, LLM-powered workflows, automation, and AI-agent systems • AI-assisted software development with Claude Code, OpenAI Codex, Cursor, and OpenClaw I use modern AI development tools like Claude Code, OpenAI Codex, Cursor, and OpenClaw to analyze codebases, implement and refactor features, generate and review tests, investigate defects, improve documentation, and accelerate delivery. I treat these tools as engineering leverage, not substitutes for engineering judgment: I remain responsible for architecture, security, code quality, verification, and production outcomes. I’m especially useful when a project is technically complex, poorly documented, partially built, or already in production. I can understand the existing system, identify the real constraints, explain tradeoffs clearly, and turn an ambiguous problem into a practical technical plan. My background includes engineering work with organizations such as Apple, Yahoo/AOL, Thomson Reuters, and Citi. I have also led multiple engineering teams and complex software deliveries while remaining closely involved in architecture, critical technical decisions, implementation, and production issues. I am available as: • A hands-on senior software engineer • A technical lead for a product or engineering team • An AI engineer integrating useful AI capabilities into existing systems • A senior technical consultant for architecture, modernization, or project recovery When you hire me through this profile, you work directly with me, not an anonymous outsourced team. I can help you with: • Build or extend backend and full-stack applications • Design and implement APIs and third-party integrations • Repair unstable, incomplete, or underperforming systems • Modernize legacy applications without disrupting production • Review architecture and code before an investment or handoff • Improve security, performance, scalability, and reliability • Deploy and operate applications in AWS, GCP, or Azure • Add practical AI and automation capabilities to an existing product • Lead a technically difficult project or critical delivery phase I communicate risks and unknowns early, prefer practical solutions over unnecessary rewrites, and provide clear progress updates. I can work independently, lead a technical workstream, or collaborate with an existing engineering team. Send me a short description of your product, current technology stack, technical problem, and desired outcome. I’ll tell you candidly whether I’m a strong fit and suggest the most sensible next step.

  • Java
  • Software Architecture & Design
  • Web Development
  • Artificial Intelligence
  • AI Agent Development
  • AI Chatbot
  • Business Process Automation
  • Solution Architecture
  • API Development
  • Cloud Architecture
  • SaaS
  • Startup Consulting
  • System Automation
  • Natural Language Processing
  • Data Processing
  • Product Development
  • Software Development
  • Enterprise Software Development
  • Full-Stack Development
  • Mobile App Development
Tyler K.

Boynton Beach, Florida

$100/hr
4.7
51 jobs

🚀 Innovative Full Stack Software expert with 10+ years of transforming ideas into cutting-edge digital solutions. From Fortune 5 giants to agile startups, I've led high-impact teams and delivered game-changing products that push technological boundaries. 💡 My expertise spans: • AI/ML Integration - Building intelligent applications with ChatGPT, custom ML models, and advanced AI tools • Mobile Development - Native iOS/Android apps and cross-platform solutions using React Native & Flutter • Full Stack Mastery - End-to-end architecture from cloud infrastructure to polished front-end experiences • Cloud & DevOps - AWS, GCP, Docker, and modern CI/CD pipelines • Backend Power - Go, NodeJS, Java, Python, with both SQL and NoSQL databases • Frontend Innovation - React, Angular, NextJS, TypeScript for responsive, modern web applications 🎯 I specialize in bridging the gap between cutting-edge AI capabilities and real-world business needs. Whether it's integrating ChatGPT for enhanced user experiences, developing smart mobile applications, or architecting scalable cloud solutions, I bring a strategic approach to every project. 🤝 Looking to elevate your digital presence with AI-powered solutions or build the next revolutionary mobile app? Let's connect and transform your vision into reality! I thrive on challenges and am passionate about delivering excellence through innovation. Ready to bring your project to life? Let's discuss how we can leverage modern technology to achieve your goals! I'm always looking for new and exciting opportunities. Let’s connect!

  • Java
  • Node.js
  • Angular
  • Docker
  • RxJS
  • Golang
  • Ionic Framework
  • CSS
  • Terraform
  • AWS CloudFormation
  • API
  • CI/CD
Raul H.

Miami, Florida

$50/hr
5.0
2 jobs

I HELP BUSINESSES TURN MANUAL, LEGACY OPERATIONS INTO AUTOMATED, AI-POWERED SYSTEMS THAT HOLD UP UNDER REAL PRODUCTION LOAD. I'm a senior software engineer with 15+ years architecting cloud-native solutions across aviation, logistics, and enterprise domains. I've spent my career on systems where downtime isn't an option, and more recently I've layered AI-assisted engineering (Claude Code, Cursor) on top of that foundation to ship faster without sacrificing reliability. My focus today also includes CRM, ERP, and e-commerce automation, connecting the systems businesses already run on so they work together instead of in silos. Career highlights: • Leveraged AI-assisted engineering workflows (Claude Code, Copilot, Cursor) to accelerate feature development and code reviews, increasing team throughput and code quality • Architected and maintain a serverless-first ERP ecosystem on AWS supporting aviation maintenance operations, with zero downtime for mission-critical workflows • Led integrations connecting TRAX to SABRE Operation Control, Coupa, and AeroXchange, streamlining operations across multiple aviation systems • Engineered secure, high-integrity digital workflows that achieved FAA paperless approval for task-control processes • Modernized a legacy e-billing system for a Fortune 500 logistics company, reducing technical debt and improving resilience • Maintained 99%+ uptime on safety-critical aviation microservices while building real-time data access for remote client sites • Reduced security breaches by 25% while migrating a desktop inventory system to a modern web architecture • Consolidated two employees' worth of manual reporting into a single automated data pipeline, eliminating duplicate effort through intelligent workflow design AI & Automation: Claude Code, Cursor, agentic AI design patterns, AI agent integrations - using AI as a force multiplier, not a replacement for engineering judgment Full-Stack Development: React, Angular, TypeScript, Node.js, REST APIs, microservices - end-to-end web application development with a focus on maintainability CRM & Workflow Automation: GoHighLevel, n8n, API integrations, webhooks - connect CRM systems to the rest of your stack so lead flow, follow-ups, and reporting run without manual handoffs E-Commerce & Payments: Shopify, WooCommerce, Stripe, payment gateway integrations, inventory synchronization, order automation - reliable commerce systems that don't need babysitting during peak traffic Cloud & DevOps: AWS (Lambda, EC2, RDS, S3, IAM), CDK/CloudFormation, Azure, Docker, Kubernetes, GitHub Actions, Jenkins - serverless-first, infrastructure-as-code approach Aviation & Logistics: TRAX ERP, SABRE, Coupa, AeroXchange, Oracle, AWS (Lambda, EC2, RDS, S3) - built and maintained mission-critical MRO and eMobility systems for major airlines Enterprise Modernization: Java, Spring Boot, Spring MVC, Angular, Oracle - led cloud-native modernization of legacy enterprise systems, cutting technical debt and improving resilience WHY CLIENTS KEEP ME ON: I've built systems where a bug means grounded aircraft, not just a bad review. That standard doesn't change when I move to SaaS, automation, or AI projects. I communicate clearly, deliver on schedule, and build things designed to still work a year after launch. If you need something built right the first time, let's talk about what you're working on.

  • AI Agent Development
  • AI Development
  • AI App Development
  • Automation
  • n8n
  • AI Model Integration
  • CRM Software
  • API Integration
  • Machine Learning
  • Claude
  • Full-Stack Development
  • Ecommerce
  • Artificial Intelligence
  • Microservice
  • ERP Software
Brinda V.

Lutz, Florida

$40/hr
5.0
5 jobs

Java Developer| Eligibility Specialist 1 |github PROFESSIONAL SUMMARY * Experienced in development and deployment of various Object oriented and web-based Enterprise Applications using Java/J2EE technologies and working on the complete System Development Life Cycle (SDLC). * Proficient in n-tier application design and development using Java, J2EE, Spring and Oracle. * Working Knowledge in JSON and XML technologies such as XSL, XSLT, XPath, parsers like SAX, DOM and JAXB. Restful Web services using JAX-RS API. * Worked in Development teams under various roles such as Designer, Tester, and Developer. * Developed applications using Multithreading, Serialization, Externalization, Collections and Generics * Used Spring Boot Actuator to monitor and manage the application in production environment. * Flexible committed individual with excellent interpersonal & communication skills, aiming to

  • Java
  • Spring Boot
  • AI Agent Development
Roman H.

Miami, Florida

$35/hr
4.9
43 jobs

Web apps that scale, code that lasts, and full stack solutions built to solve real business problems — not just ship features. At ORIL, we work with founders, product teams, and growing companies that need a reliable full stack developer partner focused on long-term results. With 10+ years of experience, 100+ products developed, and 100% Job Success, we help businesses reduce technical risk and build software that performs in real-world conditions. I’m a full stack developer focused on building reliable, production-ready applications that perform under real users and real conditions. I make sure frontend, backend, and infrastructure work together smoothly, so your product is stable, scalable, and easy to maintain. What Clients Say: 🔸 “𝘛𝘩𝘦 𝘖𝘙𝘐𝘓 𝘵𝘦𝘢𝘮 𝘵𝘢𝘬𝘦𝘴 𝘦𝘹𝘵𝘳𝘢 𝘤𝘢𝘳𝘦 𝘵𝘰 𝘶𝘯𝘥𝘦𝘳𝘴𝘵𝘢𝘯𝘥 𝘰𝘶𝘳 𝘰𝘱𝘦𝘳𝘢𝘵𝘪𝘰𝘯𝘴. 𝘞𝘩𝘦𝘯 𝘵𝘩𝘦𝘺 𝘥𝘦𝘭𝘪𝘷𝘦𝘳, 𝘺𝘰𝘶 𝘬𝘯𝘰𝘸 𝘪𝘵’𝘴 𝘴𝘰𝘭𝘪𝘥.” — 𝘐𝘯𝘯𝘰𝘷𝘢𝘵𝘪𝘰𝘯 𝘔𝘢𝘯𝘢𝘨𝘦𝘳, 𝘙𝘰𝘣𝘪𝘯𝘴 & 𝘔𝘰𝘳𝘵𝘰𝘯 🔸 “𝘖𝘙𝘐𝘓’𝘴 𝘴𝘦𝘳𝘷𝘪𝘤𝘦, 𝘱𝘦𝘳𝘧𝘰𝘳𝘮𝘢𝘯𝘤𝘦, 𝘢𝘯𝘥 𝘤𝘰𝘮𝘮𝘶𝘯𝘪𝘤𝘢𝘵𝘪𝘰𝘯 𝘧𝘳𝘰𝘮 𝘥𝘦𝘴𝘪𝘨𝘯 𝘵𝘰 𝘥𝘦𝘷𝘦𝘭𝘰𝘱𝘮𝘦𝘯𝘵 𝘩𝘢𝘷𝘦 𝘣𝘦𝘦𝘯 𝘵𝘰𝘱-𝘵𝘪𝘦𝘳.” — 𝘗𝘳𝘦𝘴𝘪𝘥𝘦𝘯𝘵 & 𝘊𝘰-𝘍𝘰𝘶𝘯𝘥𝘦𝘳, 𝘚𝘮𝘢𝘳𝘵𝘢 We deliver projects as a full stack node.js react team, combining strong backend architecture with modern frontend development. As a full stack javascript developer partner, we take responsibility for the entire lifecycle — system design, API architecture, frontend implementation, testing, deployment, and long-term support — so clients can focus on their business instead of managing technical complexity. Clients often start working with us as a web developer or react developer when they need fast and predictable execution. For scalable products, we frequently build systems using mern, where a full stack developer mern approach ensures clean data flow, consistent business logic, and maintainable frontend architecture as the product grows. In product development, many teams face binary technical decisions that are effectively a coin flip at early stages — choosing between speed and scalability, or quick validation and long-term stability. Our role is to remove that uncertainty by designing architectures where decisions are intentional, measurable, and reversible, rather than based on chance. Depending on the product stage, we may collaborate with a wordpress developer to extend or modernize existing wordpress platforms, or integrate workflows created by a no code developer to accelerate validation without locking the product into technical limitations. For cross-platform solutions, we also act as a mobile app developer, aligning mobile and web products into a single, maintainable architecture. In enterprise environments, we regularly contribute as a full stack java developer team, connecting robust backend systems with modern frontend frameworks such as react. Our Services 🔸 Backend Development: Node.js (Express.js, NestJS), Java (Spring Boot, Hibernate), Python (Django, Flask) 🔸 Frontend Development: React, Angular, Vue.js, TypeScript, Next.js, responsive web development 🔸 Web Development: Web Application Development, Web App, SaaS, Web Platform 🔸 Mobile Development: React Native, Ionic, Cordova, cross-platform solutions 🔸 API Architecture: REST, GraphQL, WebSockets, OAuth2, JWT 🔸 Microservices & Cloud: AWS, GCP, Azure, Docker, Kubernetes, CI/CD pipelines 🔸 Databases & Integrations: MongoDB, PostgreSQL, MySQL, Redis, Firebase, Elasticsearch 🔸 QA & Test Automation: Jest, Cypress, JUnit, Mockito, Selenium 🔸 Team Extension: Dedicated full stack developers & cross-functional teams Industries We Work With Real Estate, Property Management, Property Listing, MLS, Smart Buildings, Rental Platforms, Asset Management, FinTech, Finance & Banking, Cryptocurrency, Automotive, HealthTech, Healthcare, Medical Dashboards, Construction, Hospitality, Transportation, Logistics, Retail, Manufacturing, Food Delivery, Marketplaces, Dating Apps, Media & Publishing, Entertainment, Advertising, Marketing, Education, E-Learning, Sports & Fitness, Wellness, Travel & Tourism, Navigation, Utilities, Human Resources, LegalTech, Non-Profit, Lifestyle, Fashion, Ecology, Nature & Wildlife, Business Innovation. ❌We do not work with gambling-related products or platforms❌ We build software that supports growth, reduces technical uncertainty, and remains maintainable over time. If you’re looking for a full stack development partner who values clarity, reliability, and business outcomes, let’s connect and discuss your project.

  • JavaScript
  • Node.js
  • React
  • CSS
  • HTML
  • PHP
  • Web Design
  • Tailwind CSS
  • MongoDB
  • HTML5
  • TypeScript
  • MySQL
  • Vue.js
  • CSS 3
  • API
  • Full-Stack Development
  • WordPress
  • API Integration
  • Web Application
  • Redux
Kanishk G.

Doral, Florida

$60/hr
4.7
8 jobs

Hi! I'm a Certified Salesforce Consultant with 8+ years of experience architecting and implementing powerful, scalable, and user-friendly Salesforce solutions for businesses across industries and geographies. From Fortune 500 enterprises to fast-moving startups, I have helped clients unlock the full potential of Salesforce across its vast ecosystem including Sales Cloud, Service Cloud, Marketing Cloud, Commerce Cloud, Experience Cloud, CPQ, Field Service, Financial Services Cloud, Nonprofit Cloud, and more. Whether you're planning a new implementation, fixing a cluttered org, or need a trusted partner for ongoing innovation, I can help. What I Can Help You With: - Full-cycle Salesforce implementation & architecture - Data modeling, custom schema, and record-level security - Process automation with Flows, Process Builder, and Apex - Custom development with Apex, LWC, Aura, Visualforce - API and third-party integrations (Stripe, Shopify, Slack, Outlook, Mailchimp, Twilio, etc.) - Einstein AI features setup and training - Salesforce DevOps & CI/CD using DX, Git, Gearset - Data migration from legacy systems (Zoho, HubSpot, Dynamics) - Advanced dashboards, reporting, and analytics - AppExchange consulting or custom app development - Post-go-live support, enhancements, and maintenance Over the years, I have led various successful Salesforce projects across industries such as SaaS, healthcare, finance, e-commerce, and education. I pride myself on being more than just a developer. I am a strategic partner who understands business goals and translates them into scalable Salesforce solutions. Certifications & Tools: - Salesforce Certified Administrator - Salesforce Certified Platform Developer I - Salesforce Sales Cloud Consultant - Apex, LWC, SOQL, Visualforce - Jira, Confluence, Git, CI/CD tools - Agile & Scrum project delivery Clients often describe me as proactive, responsive, and easy to work with. I communicate clearly, hit deadlines, and bring a deep understanding of both the technical and business sides of CRM. Ready to take your Salesforce org to the next level? Let’s connect and build a solution that empowers your team and drives results.

  • Salesforce CPQ
  • Salesforce CRM
  • Salesforce Lightning
  • Salesforce Sales Cloud
  • Salesforce Marketing Cloud
  • Salesforce Service Cloud
  • Salesforce App Development
  • Data Migration
  • Salesforce Einstein
  • Tableau
  • Pardot
  • HubSpot
  • Apex
  • API Integration
  • AppExchange
  • API Development
  • Mulesoft
  • Commerce Cloud
  • n8n
  • Automation

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