I help startups and enterprise clients turn complex business requirements into production-ready software — and I've done it across 8+ shipped applications, including 3+ years delivering end-to-end projects for Japanese enterprise clients in legal, HR, automotive, and marketing. What sets me apart isn't just that I write clean, scalable code. It's that I own the full delivery lifecycle: architecture, CI/CD automation, performance optimization, and shipping on deadline. On one location-based campaign platform serving 20,000 users, I cut map-pin load times from 5+ seconds to sub-second. On another, I built a multi-tenant AI document-analysis SaaS with a full developer portal, public REST API, and async processing pipelines. I also build real-time systems — SocketIO messaging, OAuth/auth flows, push notifications, and hardened, rate-limited APIs. I'm self-taught, delivery-obsessed, and easy to work with. I communicate clearly, translate vague ideas into concrete technical plans, and I don't disappear mid-project. If you need someone who can take a product from concept to deployment without hand-holding, let's talk. What I can build for you: - AI-powered SaaS platforms (document ingestion, extraction, summarization, semantic search) - Multi-tenant architectures with role-based access, API key management & webhooks - Real-time apps (chat, presence, notifications) with SocketIO - Full-stack web & mobile applications (React, Next.js, React Native) - Secure authentication systems (OAuth 2.0, email/password, reset flows) - REST APIs with interactive docs, rate limiting & abuse protection - CI/CD pipelines & cloud deployment (GCP, AWS, Azure) Technology & Skill: - Frontend: React, Next.js, React Native, Angular, TypeScript, NgRx, Zustand, TanStack - Backend: Node.js (NestJS, Express), Laravel, Ruby on Rails, Django, Java Spring, .NET, Prisma - Databases & Storage: PostgreSQL, MySQL, MongoDB, Redis, Firebase, Supabase, S3 - AI / SaaS: Document analysis, semantic search, async processing pipelines, multi-tenant architecture - DevOps & Cloud: Docker, Terraform, GitHub Actions, Jenkins, GCP, AWS, Azure - Real-Time & Messaging: SocketIO, Kafka, NATS, RabbitMQ, Firebase FCM - Testing & Monitoring: Playwright, Jest, PHPUnit, RSpec, Sentry, Grafana - Automation: n8n, Zapier, Make, GoHighLevel

Hi, I'm Viron Navarro, a System Engineer who enjoys turning ideas into innovative solutions. I actively use AI tools like Cursor, ChatGPT, Claude, and Antigravity to improve my productivity and streamline development. At the same time, I rely on my solid foundation in software development to understand how things w ork, troubleshoot issues efficiently, and solve complex problems rather than depending solely on AI-generated solutions. I have experience working with modern frameworks such as Laravel, React, and Vue, and I'm always eager to learn and adapt to new technologies. When developing applications, I focus on writing clean, scalable, reusable, maintainable, and secure code by following best practices, applying proper architecture, and creating components and modules that are easy to extend and maintain as projects grow. Frameworks: Laravel, React, Vue, Ruby on Rails, Express AI Tools: Cursor, ChatGPT, Claude, Antigravity UI/UX Design: Figma Let's talk about your project I'll make things happen

I'm open to any freelance recruitment projects in US, UK, Singapore and Vietnam. - A professional having +10 years experience working in researching field. - I have extensive experience sourcing CVs in many industries such as: IT, Finance & Banking, Marketing, Sales, Business Development and Art & Design. Specialties: Crypto (web3, Solidity, smart contract...) Front-end (reactjs,angular...), Back-end (Nodejs, PHP, C#...), Full-stack, Big Data, Blockchain, Devops, Ruby, AngularJS, Python, ReactJS, Mobile (iOS development, Android, React native, Flutter...) UX/UI designer, PHP, Javascript, .Net, Salesforce, SAP, product/project management... My Clients are mostly from Vietnam, Australia, Singapore, The Philippines, Indonesia, America, Hong Kong and some from UAE. I can search candidates globally. Currently focus on full-time and part time remote roles. I'm willing to help technology startups expand their teams as quick as possible. Please don't hesitate to contact me for any opportunities. Thank you.

Hello There! I'm just new here in Upwork. I'm a Technical Sourcer and Recruitment Specialist with 5 years of experience success placing hundreds of candidates across the UK, US, Canada, Netherlands, and APAC. I specialize in Technical recruitment, and I’ve also sourced top talent across Marketing, Sales, Finance, BPO, Construction, and Healthcare industries. 𝐑𝐨𝐥𝐞𝐬 𝐖𝐞’𝐯𝐞 𝐒𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥𝐥𝐲 𝐅𝐢𝐥𝐥𝐞𝐝 Technical Roles: • Software Developers (.NET, C#, C++, Java, React, Python, JavaScript) • Full Stack Developers, UI/UX Designers • Azure Engineers, DevOps Engineers • QA Automation Engineers • Engineering Managers, CTOs • Ruby on Rails, Flutter, Shopify Developers Sales & Marketing: • Marketing Manager • SEO Specialist • Digital Marketing Specialist • Brand & Content Specialists. • Sales Representative • Account Executive • Business Development Manager • Sales Manager • VP of Sales • BPO • Customer Service Representatives • Technical Support Specialists Human Resources & Finance • HR Specialists • Recruitment Managers • HR Managers • Finance • Payroll Specialists • Accountants, Assistant Accountants • Bookkeepers • Head of Finance Construction & Skilled Trades • Project Managers • HSE Managers • Superintendents • Carpenters, Electricians 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬: - Full-cycle recruitment: sourcing → screening → interviewing → offer - Candidate Sourcing - LinkedIn Lead Generation - Contact & Email List Building - Data Mining & Web Scraping - Increasing LinkedIn Connections & Sending Personalised Requests - Web & Online Research - Data Entry 🔹 Tools I Use: Recruitment: LinkedIn Recruiter, Bullhorn, Greenhouse, Zoho, Chameleon-i, Recruiter Flow Lead Gen: Sales Navigator, Apollo, ZoomInfo, Lusha, RocketReach, Hunter Email/CRM: Hubspot, Mailchimp, ProtonMail, GMass, Instantly Project Tools: Trello, Asana, Monday.com, Google Sheets If you're looking for a recruiter who brings speed, quality, and strategy, let’s connect! 📩 Send me an invite and let’s talk about your hiring or lead gen needs.

I am a Python Developer with 5+ years of experience building automation tools, dashboards, internal systems, and AI-assisted solutions. I help businesses reduce manual work, improve efficiency, and streamline operations by developing Python-based tools for automation, data processing, API integration, dashboards, and custom workflows. My experience includes: - Python automation scripts - API integration - AI chatbot integration - Dashboard development - Data extraction and processing - Internal business tools - Workflow automation I focus on delivering practical, maintainable, and business-driven solutions that help teams save time and improve day-to-day operations.

We are a development studio focusing on creating quality and innovative websites, services and applications for our clients. Our team consists of UX/UI design and development experts who are ready to exceed our clients' expectations and create products that will appeal to their target audience. We create reliable and intuitive solutions that provide our clients with confidence in their business and growth of their company. Our expertise covers a wide range of technologies and frameworks, including (but not limited to) JavaScript, Python, React, Angular, Vue, Node.js, Ruby on Rails and PHP.

Over the last 10 years until present, I have developed a wide range of websites using PHP Based Applications such as Wordpress, Joomla, Shopify, Magento, Drupal, Cakephp with Woocomerce, AngularJs, ReactJs, Bootstrap and Foundation as part of the development applications ranging from startup companies, small businesses and Large Businesses. My core competency lies in a complete end-end management of a new website development project, and I am seeking opportunities to build websites from the ground up for you and your business. I have a bachelors degree in Computer Engineering. It is my utmost mission to contribute what I can do to help your business.

⚙️ Building compliant software doesn't have to be painful. That's what keeps me busy as a Full Stack Developer. 💻 I'm a Senior Full Stack Developer with 8+ years of experience building SaaS platforms, healthcare software, compliance-focused applications, CRM systems, MVP, dashboard solutions, marketplace platforms, and enterprise web applications. I help startups, growing businesses, and established companies transform ideas into scalable products that support long-term growth. 🚀 As a Full Stack Developer, React Developer, and Web Developer, I take ownership of the entire development lifecycle-from architecture and database design to frontend development, backend systems, AI API integration, deployment, and scaling. Clients hire me when they need a Full Stack Developer who understands both technical requirements and business objectives. Many companies don't need another developer who can simply write code. They need a Full Stack Developer who can build reliable software, improve business processes, support compliance requirements, and help products scale as user demand grows. Over the last 8+ years, I've worked on SaaS platforms, Healthcare Software, HIPAA-Compliant systems, GDPR-Compliant applications, CRM platforms, Marketplace Platforms, Admin Dashboards, Analytics Dashboards, Internal Business Tools, Workflow Automation Systems, Customer Portals, and Enterprise Applications. As a React Developer and Next.js Developer, API developer, I build responsive user interfaces, SaaS dashboards, customer portals, and modern web applications using React, Next.js, TypeScript, JavaScript, Tailwind CSS, Material UI, HTML5, CSS3, and Progressive Web Applications (PWA). On the backend, I work as a Node.js Developer and Python Developer, building scalable APIs, integrations, and backend services with Node.js, NestJS, Express.js, Python, Django, Flask, PHP, and Laravel. I regularly design REST APIs, implement authentication systems, integrate third-party services, and build scalable backend architectures. I also work extensively with PostgreSQL, MySQL, MongoDB, Supabase, and Firebase. Strong Database Architecture is often the difference between a system that scales and one that becomes expensive to maintain. For cloud infrastructure and deployment, I work with AWS, Docker, Vercel, CI/CD pipelines, GitHub Actions, and modern cloud architectures. Whether launching a new SaaS platform or scaling an existing application, I help ensure systems remain reliable, secure, and maintainable. Many modern businesses are integrating AI capabilities into their products. I have experience building AI-powered applications using OpenAI, Claude, AI Agents, Workflow Automation, and RAG-based systems. These solutions help automate business processes, improve customer experiences, and reduce repetitive manual work. Security and compliance are a major focus of my work. I regularly implement Role-Based Access Control (RBAC), audit logging, secure authentication, authorization systems, permission management, document workflows, and secure API integrations. I've worked on products where HIPAA, GDPR Compliance, data privacy, and security requirements were critical to success. I also have experience working with Next.js, Supabase, Shopify, Stripe integrations, MVP development, and multi-tenant SaaS architectures. While these technologies are not always my primary stack, I have successfully used them in production environments to support scalable business applications. 📈 Some measurable results from projects I've contributed to include: • Up to 18% improvement in operational efficiency through workflow automation, dashboard development, and optimization. • Up to 22% reduction in manual administrative work through custom CRM systems. • Up to 17% faster application performance through frontend optimization, database improvements, API optimization. Companies often hire me because they want a single point of ownership across frontend development, backend development, database architecture, API integration, deployment, and ongoing product support. Instead of coordinating multiple specialists, they work with someone who understands how every part of the system fits together. I regularly help businesses build and improve SaaS Platforms, Healthcare Software, HIPAA-Compliant Applications, GDPR-Compliant Systems, CRM Platforms, Marketplace Platforms, B2B Marketplaces, Customer Portals, Employee Portals, Dashboard Development Projects, Workflow Automation Systems, Compliance Management Software, Internal Business Tools, Enterprise Applications, AI-Powered Products, and Web Application Development projects. Core expertise includes Full Stack Development, React Development, Next.js Development, Node.js Development, Python Development, Laravel Development, RAG Web Development, Mobile App Development, React Native Development, REST API Development, and AI-powered, AI agents

I’m a Senior Java Backend Engineer with 15+ years of experience building scalable backend systems, cloud-native applications, APIs, distributed systems, and enterprise platforms across fintech, HR SaaS, e-commerce, telecommunications, and automation industries. I specialize in backend modernization, microservices, event-driven architecture, AI integrations, workflow automation, and high-performance backend engineering using Java, Spring Boot, Micronaut, Kafka, Redis, PostgreSQL, Kubernetes, Docker, and AWS. I’ve worked on: • Ruby on Rails to Micronaut backend modernization • High-throughput telecom systems processing millions of records • Shopify backend integrations and e-commerce platforms • Distributed systems using Kafka and asynchronous processing • Cloud-native backend services and scalable APIs • AI integrations and workflow automation systems • Enterprise CRM, fintech, and lending platforms I focus on building reliable, maintainable, and scalable backend solutions that solve real business problems while improving performance, operational efficiency, and long-term scalability. If you need a backend engineer who can design scalable systems, modernize legacy platforms, integrate APIs and AI services, and deliver production-ready backend solutions, I’d be happy to help.

👋Hello, It's me John Mark. Experienced Human Resource Professional / Human Resource Manager with over 10+ years of successful experience working with the full cycle of Human Resources, I have developed a vast experience and knowledge on designing and implementing projects and strategies for both domestic and international set-up. 💌What I like about Human Resource is helping companies and organizations in making their talent sourcing, HR Practices and organizational processes fast and efficient as well as helping individual people on finding a perfect job that matches their skills and career. From all my past employment experience, It afforded me a well-rounded skill set, including strong work ethics, positive attitude, good communication skills, time management, proficient computer skills, and excellent relationship building towards colleagues and clients. ✅Recruitment and Talent Acquisition - Sourcing through various platforms (LinkedIn, Indeed, Social Media, Local Job Boards, Referrals, Networking) - Candidate Screening - Initial to Final Interview - Negotiation and Persuasion Skills ✅ General & Technical Recruitment Experience I have been working with various profiles for the North & South America, Europe, and Asia including but not limited to the following profiles: - Frontend Developers, HTML/CSS, JavaScript, AngularJS, - ReactJS, JQuery, VueJS, among other web technologies. - Backend Developers, PHP, Java, NodeJS, Ruby, Laravel, - Symfony, Ruby on Rails, .NET C# . NET Core, SQL, MySQL, PostgreSQL, MongoDB, among other backend technologies. - Full Stack Developers - React Native Developers - Project Managers - UX / UI Designers - Graphic Designers - Senior level positions (CFO, CTO, CEO, Managers, etc) - Legal Translator - Copywriter - Engineers - Customer Service - Human Resource - Accounting & Finances - Licensed Insurance Agents - Construction Personnel ✅ Other Human Resource Experience - Payroll - Employee Files and Records - HR Policies and Procedures - Creation of Employment Handbook - Employee Relation - Employee Development and Training - Compensation and Benefits