I am a Senior Mobile Application Developer with 11+ years of experience in Android, iOS, and cross-platform development, specializing in integrating Artificial Intelligence (AI) and Machine Learning (ML) into mobile apps. I build intelligent, high-performance, and user-friendly applications powered by computer vision, NLP, on-device ML, chatbots, predictive analytics, and recommendation systems using TensorFlow Lite, Core ML, and OpenAI APIs. ✅ My Core Expertise: 📱 Mobile App Development: Native Android (Java, Kotlin) Native iOS (Swift, SwiftUI, Objective-C) Cross-platform: Flutter & React Native Flutter + JavaFX for desktop app development 🧠 AI-Powered Mobile Apps: On-device AI model execution using TensorFlow Lite and ML Kit Integrating image classification, object detection, face recognition, and OCR AI-assisted productivity apps: smart scanners, chatbots, and speech recognition Hybrid models combining server-side and on-device AI for performance and privacy Experience working with custom-trained models and embedding inference into apps 🛠 Backend & API Development: Java/J2EE with Spring Boot, Spring Cloud, Spring MVC RESTful API development & integration Hibernate, JAX-RS/WS Dockerized backend deployment 🧠 Architecture & Dev Tools: Strong understanding of mobile/web architecture & design patterns (MVC, MVVM, BLoC) Git (GitHub, GitLab, Bitbucket) CI/CD pipelines JUnit, Mockito Elasticsearch If you're looking for a reliable, senior-level developer to build your mobile or AI-powered application — or need a long-term partner to support and scale your product — I’m here to help. 📬 Message me anytime — let’s turn your idea into reality.

With over 10+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 in web development, I specialize in building 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭, and 𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐢𝐧𝐠 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬. Over the past 7 years, I have mastered 𝐑𝐞𝐚𝐜𝐭, 𝐍𝐞𝐱𝐭.𝐣𝐬, 𝐍𝐨𝐝𝐞.𝐣𝐬, 𝐀𝐧𝐠𝐮𝐥𝐚𝐫, 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞, and modern web technologies, focusing on creating dynamic, AI-driven, and responsive solutions. As a full-stack developer, I deliver seamless 𝐟𝐫𝐨𝐧𝐭-𝐞𝐧𝐝 and 𝐛𝐚𝐜𝐤-𝐞𝐧𝐝 experiences, combining 𝐑𝐞𝐚𝐜𝐭/𝐍𝐞𝐱𝐭.𝐣𝐬 for intuitive UIs with .𝐍𝐄𝐓, 𝐏𝐲𝐭𝐡𝐨𝐧 (𝐃𝐣𝐚𝐧𝐠𝐨), and 𝐉𝐚𝐯𝐚 for solid back-end functionality. 🚀 I’ve successfully worked on 𝐥𝐚𝐫𝐠𝐞-𝐬𝐜𝐚𝐥𝐞 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 in industries like 𝐡𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞, 𝐞𝐂𝐨𝐦𝐦𝐞𝐫𝐜𝐞, 𝐫𝐞𝐚𝐥 𝐞𝐬𝐭𝐚𝐭𝐞, and 𝐛𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧, delivering solutions that drive business success. My mission is to help businesses create 𝐢𝐧𝐧𝐨𝐯𝐚𝐭𝐢𝐯𝐞, 𝐮𝐬𝐞𝐫-𝐟𝐫𝐢𝐞𝐧𝐝𝐥𝐲 𝐝𝐢𝐠𝐢𝐭𝐚𝐥 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞𝐬 that convert visitors into loyal customers. 🎯 𝐊𝐞𝐲 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: ➡️ 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: React.js, Next.js, Angular, React Native, Material UI, Ant Design, Bootstrap, SCSS 💡 ➡️ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: .NET, Python (Django), Node.js, Java ⚙️ ➡️ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: MySQL, PostgreSQL, MongoDB, Cassandra (NoSQL) 📊 ➡️ 𝐒𝐜𝐫𝐢𝐩𝐭𝐢𝐧𝐠 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞𝐬: JavaScript, TypeScript, Node.js, jQuery ✍️ ➡️ 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬: AWS, Docker, CI/CD, API integrations ☁️ ➡️ 𝐀𝐈 & 𝐌𝐚𝐜𝐡𝐢𝐧𝐞 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠: AI/ML model integration, intelligent automation 🤖 ➡️ 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧: Smart contracts, dApps, Web3 solutions 🔗 ➡️ 𝐔𝐈/𝐔𝐗 & 𝐃𝐞𝐬𝐢𝐠𝐧: Figma, wireframing, prototyping, responsive design for seamless cross-device compatibility 🎨 𝐖𝐡𝐲 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞? ➡️ 𝐏𝐫𝐨𝐯𝐞𝐧 𝐒𝐮𝐜𝐜𝐞𝐬𝐬: Delivered numerous 𝐥𝐚𝐫𝐠𝐞-𝐬𝐜𝐚𝐥𝐞 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 in 𝐡𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞, 𝐞𝐂𝐨𝐦𝐦𝐞𝐫𝐜𝐞 & 𝐛𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 with a focus on 𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞, 𝐬𝐜𝐚𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲 & 𝐬𝐞𝐜𝐮𝐫𝐢𝐭𝐲. 💪 ➡️ 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐯𝐞: I work closely with clients to translate 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐠𝐨𝐚𝐥𝐬 into 𝐟𝐮𝐧𝐜𝐭𝐢𝐨𝐧𝐚𝐥 & 𝐢𝐧𝐧𝐨𝐯𝐚𝐭𝐢𝐯𝐞 software. 🤝 ➡️ 𝐂𝐨𝐝𝐞 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 & 𝐒𝐜𝐚𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲: Clean, maintainable, and future-ready code. 🛠️ ➡️ 𝐀𝐝𝐚𝐩𝐭𝐚𝐛𝐢𝐥𝐢𝐭𝐲: From building from scratch to upgrading legacy systems or ongoing support, I provide 𝐭𝐚𝐢𝐥𝐨𝐫𝐞𝐝 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬. 🧩 Let’s build something amazing together and take your business to the next level! 🚀

I help clients solve real business problems through technology by building reliable, scalable, and practical software solutions. Backend development is my core strength, with 10+ years of experience in Java, Spring Boot, REST APIs, microservices, and enterprise systems. I can also contribute on the frontend when needed, which allows me to handle the complete software lifecycle, from requirement gathering and solution design to development, testing, and deployment. What I can help you with: Java and Spring Boot backend development REST APIs and microservices Enterprise application development Oracle, MySQL, and database-driven systems Full software lifecycle delivery, from requirements to deployment Frontend support when end-to-end execution is needed In addition to strong technical expertise, I bring domain experience across fintech in Pakistan and Cameroon, healthcare and fitness in Europe, and trucking and agriculture in the USA. I have worked on systems where strong architecture, clean business logic, and dependable delivery are essential. My focus is always on understanding requirements clearly and delivering solutions that are maintainable, efficient, and aligned with business goals. I value clear communication, professionalism, and honesty throughout every stage of the project.

I build AI systems that solve hard, real-world problems. Recently I developed a dual-camera computer vision system that analyzes bodybuilding exercise form in real time, tracking body keypoints, scoring movement quality frame by frame, and delivering actionable feedback through a clean interface. The client came back with more work. That's the standard I hold myself to. My focus is on the intersection of AI and practical engineering: → Computer vision and pose estimation systems → Machine learning model development and deployment → LLM integration and AI-powered applications → Python backends and data pipelines → End-to-end delivery, from model to working product I have an engineering degree and a strong foundation in mathematics and algorithms. I don't just run pre-built models. I understand what's happening inside them, which means I can debug, optimize, and adapt when things get complicated. I work with clients who have problems that are a step beyond what a typical developer can handle. If that's you, let's talk.

Java and Spring Framework expert with over 7 years of experience in the software engineering. If you're looking for a skilled Software Engineer who can help you build fast, scalable, and high-performance applications, then look no further. Let's work together and bring your project to life. Skills: - Programming Languages: Go, Java, Kotlin, Swift, React - Technologies: Gin, Viper, Serverless, SpringBoot, Kafka, Akka, Splunk, ELK - Database: DynamoDB, Couchbase, MS SQL, MySQL, Spring Data, DB2 - Source Control, Dev Ops: AWS, Github, Gitlab, Docker, Kubernetes, Helm, OpenShift/RHEL, Jira, qTest, NewRelic, Datadog 𝐖𝐇𝐀𝐓 𝐒𝐄𝐓𝐒 𝐌𝐄 𝐀𝐏𝐀𝐑𝐓: I have 7 years of Industry experience, working in companies having customers in the millions & building and maintaining applications responsible for well over a thousand requests per second. I have built synchronous and asynchronous systems - Dozens of REST APIs and message queues. Reach out today, and together we'll create digital experiences that stand out in the crowd.

Hi! I’m Vladyslav Strashniuk, a reliable and versatile Full Stack Developer from Vinnytska, Ukraine, with a strong foundation in C#, Java, and Python for backend development, and Angular and React for building modern, user-friendly frontends. I help startups, agencies, and enterprises create secure, scalable, and high-performance web applications that solve real business problems. 💼 What I Can Do for You: ✅ Build full-stack web apps using .NET Core, Spring Boot, or Python (FastAPI/Django) ✅ Develop modern, responsive UIs using Angular, React, and TypeScript ✅ Design and implement REST APIs, authentication, and real-time features ✅ Work with databases like SQL Server, MySQL, and MongoDB ✅ Integrate third-party APIs, payment systems, or cloud storage ✅ Deploy and manage your app on Azure, AWS, or DigitalOcean 🧠 Tech Stack & Tools ✅ Languages: C#, Java, Python, JavaScript, TypeScript, HTML, CSS/SASS ✅ Frontend: Angular, React, Bootstrap, Tailwind CSS ✅ Backend: .NET Core, ASP.NET, Spring Boot, Node.js, FastAPI ✅ Databases: SQL Server, MySQL, PostgreSQL, MongoDB ✅ Tools & DevOps: Git, GitHub, Azure DevOps, Docker, Postman, Visual Studio, IntelliJ, VS Code ✅ Cloud: Azure, AWS, Firebase

As an Oracle APEX developer with several years of experience, I specialize SQL, PL/SQL, and optimization. My skills extend to working with Oracle and MySQL databases and integrating APIs with Oracle APEX. In addition, I am familiar with other programming languages like Java, C/C++, PHP, JavaScript, HTML, CSS, jQuery, and AJAX. I have experience working with Amazon AWS, including EC2 Cloud, RDS, S3, Cognito, Route53, and Lambda. I am also knowledgeable in database design and monitoring, and routinely perform maintenance tasks to ensure optimal performance. I have also integrated various APIs with Oracle and Oracle Apex, such as Twilio, Zoom, GoToMeeting, Instamed, and Heartland. I have created custom plugins for oracle apex to implement new features and monitored databases from day-to-day. I have collaborated with teams of developers and temporary resources to deliver quality software products that meet client requirements and deadlines. Additionally, I worked on Oracle Forms to Oracle APEX conversion project, where I worked on creating Oracle Apex aplication and replicating the pages and forms and triggers and actions by analyzing the xml exports from Oracle Forms applications and manually replicating them (or creating Identical/as similar as possible - pages, reports, forms and grids) in Oracle APEX Currently, I am working on an international admissions solution for institutions in the US to manage the admission of international students, as well as an electronic health records project that provides a comprehensive solution for various healthcare requirements. Through these experiences, I have developed strong communication and teamwork skills that allow me to work effectively with individuals from diverse backgrounds and skill sets.

Hello! I'm Ankit Saini, a passionate and result-driven Full Stack Developer based in India with over 8 years of experience delivering robust, scalable, and high-performance web applications. I specialize in Java + Spring Boot microservices for enterprise applications, as well as MERN and MEAN stack development for dynamic, modern web apps. Whether it's building a cloud-native backend, a seamless frontend UI, or deploying on AWS, I bring full-stack expertise to the table. 🔧 Core Backend Expertise: Java, Spring Boot, REST APIs, Hibernate, Micronaut Microservices architecture & Dockerized deployments AWS (Lambda, API Gateway, S3, EC2) Node.js, Express.js, NestJS MongoDB, MySQL, PostgreSQL 💻 Frontend Expertise: Angular (v6 to v14+), Angular Material, RxJS React.js, Redux, Next.js Bootstrap, TailwindCSS, Material UI Dynamic Forms, Reusable Components, Cross-browser Optimization ☁️ DevOps & Tools: Git, Jenkins, Maven, VSCode, IntelliJ, Jira, Figma CI/CD Pipelines, Docker, Tomcat, AWS Cloud Services 🛠 Additional Highlights: Integration with 3rd-party APIs and payment gateways (Stripe, Razorpay) Strong focus on clean code, peer code reviews, and testing (JUnit, Mockito) MVP product development, scalable architecture, and client-focused delivery Over the years, I’ve successfully delivered full-stack solutions across industries including eCommerce, Healthcare, EdTech, FinTech, Real Estate, and more. I pride myself on writing clean, maintainable code and collaborating closely with clients to bring their vision to life. Let’s connect and explore how I can help turn your ideas into successful digital products. I'm open to both short-term and long-term opportunities. Thank you for considering my services. I look forward to discussing your project needs! Warm Regards, Ankit

✨ Seasoned software professional with 20+ years of experience in end-to-end software development, including 8+ years specializing in Big Data technologies and cloud-based solutions. Proven expertise in building scalable, high-performance data platforms using Apache Spark, Hadoop, Hive, Cassandra, and programming in Scala, Python, Java and C++. ✨ I focus on designing robust, enterprise-grade Big Data and Data Engineering architectures on GCP, AWS, and Azure, both in on-prem and cloud environments. My role involves solution architecture, technical leadership, and hands-on development of critical components. ✨ I am passionate about leveraging my experience to build cutting-edge data and AI solutions. Open to senior technical roles, consulting opportunities, and innovative startup environments. 🔹 Keen eye on scalability, sustainability of the solution 🔹 Can come up with maintainable & good object-oriented designs quickly 🔹 Highly experienced in seamlessly working with remote teams effectively 🔹 Aptitude for recognizing business requirements and solving the root cause of the problem 🔹 Can quickly learn new technologies 🔹 Transparency, Dedication, Qualtity and Satisfaction Guaranteed Sound experience in following technology stacks: ✨ Big Data: Apache Spark, Spark Streaming, HDFS, Hadoop MR, Hive, Apache Kafka, Cassandra, Google Cloud Platform (Dataproc, Cloud storage, Cloud Function, Datastore/Firestore, Pub/Sub), Cloudera Hadoop 5.x ✨ Languages: Scala, Python, Java, C++, C, Scala with Akka and Play frameworks ✨ Build Tools: Sbt, Maven ✨ Databases: Postgres, Oracle, MongoDB/CosmosDB ✨ GCP Services: GCS, DataProc, Cloud functions, Pub/Sub, Data-store, BigQuery ✨ AWS Services: S3, VM, VM Auto-scaling Group, EMR, S3 Java APIs, Redshift, MongoDB ✨ Azure Services: Blob, VM, VM scale-set, Blob Java APIs, Synapse, CosmosDB ✨ Other Tools/Technologies: Kubernetes, Dockerization, Terraform Worked with different types of Input & Storage formats: CSV, XML, JSON file, Mongodb, Parquet, ORC

🚀 Full Stack Developer with 10+ years of experience in Ruby on Rails, React, and AI integrations, building scalable FinTech, SaaS & HealthTech platforms trusted by startups and enterprises worldwide. 💰 $1B+ in revenue generated and saved for FinTech and HealthTech clients through optimized backend architecture and automation. 🚀 Delivered 100+ successful projects with 5⭐ feedback across SaaS, Banking, Healthcare, and Real-time platforms. 🌟 Top Rated Plus Full Stack Web & SaaS Developer on Upwork 🏅🏅🏅 🌟 Top 1% Ruby on Rails & React Developer 🌟 Top 2% in FinTech & Healthcare Product Engineering 🌟 Top 3% in Node.js & Java Spring Boot Architecture ✨ I specialize in Full Stack Web & Mobile Development, focusing on designing, building, and deploying secure, scalable, and high-performing platforms that drive measurable impact. My role often bridges product strategy and technical implementation, ensuring every feature aligns with real business outcomes. 🧠 Tech Expertise & Stack ✅ Backend: Ruby on Rails, Node.js, Laravel, Java Spring Boot ✅ Frontend: React.js, Next.js, Vue.js, TailwindCSS ✅ AI Integrations: OpenAI (GPT-4), LangChain, Pinecone, vector databases ✅ APIs & Integrations: Stripe, Plaid, Twilio, Firebase, Zapier, AWS SDK ✅ Databases: PostgreSQL, MongoDB, MySQL ✅ Cloud & DevOps: AWS (EC2, S3, Lambda, RDS), Docker, Heroku, CI/CD ✅ Mobile: Flutter, React Native, Swift 💡 Core Services I Offer: • Full Stack Web Development: Ruby on Rails + React.js + Node.js • FinTech Platforms: Banking APIs, KYC, Plaid, Stripe, data compliance • HealthTech Systems: HIPAA-compliant EHR, scheduling, telehealth portals • SaaS Applications: Auth, billing, analytics, and subscription-based dashboards • AI-Powered Features: GPT chatbots, NLP search, LangChain integrations • MVP Development: Fast, secure, investor-ready prototypes and scale-ready builds 🏥 Industries Served: FinTech | HealthTech | SaaS | AI Automation | Real-Time Collaboration Apps 🤝 Why Clients Trust Me: ✔️ Over a decade of delivering scalable, production-grade platforms ✔️ Deep understanding of FinTech & HealthTech regulations and architecture ✔️ Clean, maintainable code that balances speed with long-term stability ✔️ Proactive communication and product-driven mindset ✔️ Consistent 5⭐ client satisfaction, repeat partnerships & referrals 🌍 Trusted by global startups and enterprises for reliable execution, transparent communication, and solutions that balance innovation with precision. 💬 "Fahad is able to clearly communicate, act as a team player and a team leader, will ask the right questions and takes pride in his work. He is a capable engineer and manager and will be an amazing addition to any team who is lucky enough to work with him." — Client Feedback ✨ Key Skills: Full Stack Web Development: Ruby on Rails, React.js, Next.js, Node.js, Laravel, Java Spring Boot, TypeScript, TailwindCSS, Vue.js, Express.js, RESTful APIs, GraphQL, WebSockets, JWT, OAuth, MVC Architecture, Microservices Frontend Engineering: React.js, Next.js, Redux, TypeScript, TailwindCSS, Material UI, Ant Design, Styled Components, HTML5, CSS3, Sass, Responsive Design, UI/UX Optimization, GSAP Animations, Three.js Backend Development: Ruby on Rails, Node.js, Express.js, Laravel, Java Spring Boot, Flask, FastAPI, Sidekiq, Redis, Celery, REST API Design, Authentication Systems, Background Jobs, Server-Side Rendering SaaS & Product Engineering: Multi-tenancy Architecture, Subscription Systems, Billing Automation (Stripe, PayPal, Plaid), Analytics Dashboards, Admin Panels, RBAC (Role-Based Access Control), System Audits, Performance Optimization FinTech & HealthTech Expertise: Plaid API, Stripe, Twilio, HIPAA Compliance, Secure Data Architecture, Banking Integrations, Payment Gateways, Financial Dashboards, Record Management, Patient Scheduling, EHR Systems Cloud, DevOps & Infrastructure: AWS (EC2, S3, Lambda, RDS, EKS), Docker, Kubernetes, Heroku, CI/CD Pipelines (GitHub Actions, Jenkins), Terraform, Serverless Framework, Load Balancing, API Gateway, Monitoring & Scaling Database & Data Management: PostgreSQL, MongoDB, MySQL, DynamoDB, Firebase, Supabase, Prisma ORM, Data Modeling, Query Optimization, Caching, Redis Testing & QA: RSpec, Jest, Cypress, Selenium, Unit Testing, Integration Testing, TDD/BDD, Code Review, CI Test Automation Version Control & Collaboration: Git, GitHub, Bitbucket, GitLab, Agile Methodologies, Scrum, JIRA, Trello, Asana, Notion, Documentation Mobile Development: React Native, Flutter, Swift, Kotlin, Android Studio, Xcode, Cross-Platform App Development, API Integration Security & Compliance: HIPAA, OAuth 2.0, JWT, Data Encryption, OWASP, Role-Based Access, Secure Code Reviews, GDPR 𝐋𝐞𝐭’𝐬 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐚𝐧𝐝 𝐛𝐮𝐢𝐥𝐝 𝐚 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐭𝐡𝐚𝐭 𝐝𝐫𝐢𝐯𝐞𝐬 𝐫𝐞𝐬𝐮𝐥𝐭𝐬. 𝐈’𝐦 𝐫𝐞𝐚𝐝𝐲 𝐭𝐨 𝐬𝐭𝐚𝐫𝐭 𝐢𝐦𝐦𝐞𝐝𝐢𝐚𝐭𝐞𝐥𝐲.