✅ 5 Star Client Feedback I am a FullStack AI developer with 11+ years experience in technologies ranging from: - Gemini, OpenAI, Claude AI Agent Development, MCP Server - LangChain, LangGraph, Computer Use Agents, Prompt Engineering - Python, FastAPI, Celery, Batch processing - Next.js, MERN, Feathers, Sequelize, GraphQL, MongoDB - Electron, TypeScript, React, React Native - Keycloak, Java, SSO, Authentication Systems. - Tailwind, Material UI, Ant Design - PostgreSQL, MariaDB, MySQL, BigQuery, SQLite - GCS, GKE, Artifact Registry, Compute Engine, Cloud DNS - AKS, ACS, Azure functions with http, cron, event grid, storage, etc triggers. - AWS with EKS, ECR, Route53, BeanStalk, Lambda, Code pipelines, etc - Azure DevOps (CI/CD Pipelines) - Progressive Web App (PWA), Web Push, Firebase Cloud Messaging - Dockers and Kubernetes If you looking for a FullStack developer that understands the importance of communication, as well as an in-depth knowledge of the inner workings & advanced customization of services and applications? Then, you are at the right place.

Over 15 years of building and scaling distributed systems has taught me what makes software last, and exactly where it breaks. These days I pair that hard-won judgment with modern AI tooling to ship faster without compromising on code quality. The AI handles the boilerplate and accelerates execution, but I make the architectural calls and keep the quality bar high. Most of my work lives on the backend, usually at the architecture and distributed-systems level. I have built email and SMS delivery platforms, real-time analytics pipelines, API gateways, scraping fleets and lead routers, the kind of systems that have to stay up while serving millions of people a month. One of mine pushes 400k+ messages a day across six providers and never sends a duplicate. Another serves 3.5M+ requests a day. That reliability is not luck, it is the part of the job I enjoy most: backpressure, idempotency, failover, graceful shutdown, the unglamorous things that decide whether a system survives a bad day. My daily drivers are Go, Node.js and Python. I don't chase hype, I use the right tool for the job. I also deploy what I build. These days that mostly means AWS on ECS with Docker, with the whole environment as Terraform code, though I have run everything from bare Linux boxes to serverless Lambda. I have also spent years as a third-party code reviewer on Upwork, auditing PHP, Python, Node.js, Go and Java codebases for teams who just want a second set of eyes before they trust the thing in production. What you get working with me: - The speed of AI-accelerated execution with the judgment of 15+ years of real production systems behind every decision - A backend architect who owns the hard parts end to end, from API design to the queues and workers behind it - Clean, layered, maintainable code, not clever code your next developer will curse - Honest communication and clear trade-offs, I will tell you when a simpler option is the right one - Someone who deploys, monitors and operates what he builds, not just hands off a repo AI makes a lot of people faster right now, but speed without judgment just ships bugs quicker. The edge is knowing what to build, what to skip, and where it breaks under load. That is what 15 years buys you, and it is exactly what I bring. Send me the details and let's talk about what you are building.

Hi there, I'm Sofi! I help organizations investigate and troubleshoot complex digital issues, including suspicious online activity, infrastructure anomalies, and security-related incidents. My work sits at the intersection of cybersecurity, OSINT, and network/infrastructure analysis. I specialize in taking unclear or fragmented problems and turning them into structured findings. This includes phishing campaigns, malicious domains, misconfigured systems, and unusual network behavior. I combine investigative methodologies with hands-on technical experience (networks, Linux/Windows systems, and infrastructure) to identify root causes, map activity, and provide clear, actionable insights. If something looks wrong but isn’t fully understood yet; that’s where I come in :) -- Services -- • Investigation of suspicious domains, websites, or phishing campaigns (emails, malware, etc). • Analysis of malicious or unknown infrastructure (domains, hosting, patterns) • Troubleshooting network or system anomalies (Linux/Windows) • OSINT investigations and data correlation • Mapping and understanding complex or unclear technical issues • Technical reports with clear findings and next steps -- Education & Certifications -- * Master’s Degree in Cybersecurity – CEUPE (European Postgraduate Center) * ISO 27001 / ISO 22301 * TryHackMe – OSCP Path * TryHackMe – CompTIA Pentest+ Path * Python Hacking Tools – Udemy * TraceLabs Advanced OSINT Training * TraceLabs Search Party Badge * AI Red Teaming – HackTheBox Academy (ongoing) -- Core Skills -- * Digital investigations * OSINT & intelligence gathering * Threat analysis * Takedown operations * Infrastructure tracing * Technical reporting & documentation * Operational compartmentalization * Google Dorking & investigative pivoting * Tor-based research * Investigative methodology development * Team collaboration in sensitive investigations -- Languages: -- * English – Advanced * Spanish – Native * Portuguese – Intermediate (in progress) * Russian - Basic (In progress)

I have 5+ year experience in android app development. I have worked on all types of applications. Following are some key features on which i have worked: 1. Sqlite, ormlite, coredb database 2. Ndk development 3. Chatting application(using normal server implementation but has knowledge of xmpp also) 4. Custom views 5. All android component listview, expandable listview, viewpager, swipetorefresh layout 6. Json, xml parsing 7. Webservices Rest services 8. Animations 9. Device information like: contact list, sms list, read sms, auto detect sms 10. Content provider 11. Loaders 12. Networking related projects 13. Vpn integration 14. All drawers, actionbar, toolbar, recyclerview, cardview, snackbar, floating action button 15. Location based projects and Google map 16. Camera and video recording 17. Image editing 18. Referrer handling 19. Bitbuket, svn, git, redmine bug traker 20. Facebook, twitter, linkedin, instagram, clevertap sdk integration

🤝 Greetings! With over 3 years of proven experience as a Full Stack Developer, I offer a dynamic blend of technical strength and creative problem-solving to elevate your projects. 💻 My proficiency spans a wide array of technologies, including: 👩‍💻 Frontend: React, Redux, Next.js, JavaScript, TypeScript, React MUI, CSS, Bootstrap, TailwindCSS, Cypress, Webpack. 👩‍💻 Backend: Node.js, Express.js, Java, RESTful APIs. 👩‍💻 Databases: MongoDB, MySQL, PostgreSQL, MariaDB, Firebase, Redis. 👩‍💻 DevOps: AWS (DynamoDB, RDS, CI/CD, S3, EC2), Docker, Google Cloud Platform, Heroku, and Git. 👩‍💻 Microservices & Other Technologies: Kafka, WebRTC, Ejabberd XMPP Server, Prosŏdy IM, Debezium and Socket.IO. This comprehensive skill set equips me to craft bespoke solutions tailored to meet your project's unique requirements. Whether it's creating seamless user experiences or architecting robust systems, I'm committed to delivering top-notch solutions that align with your business goals. 🚀 I understand that it's not just about delivering a product; it's about crafting an experience. By partnering with me, you're not just hiring a developer; you're gaining a dedicated collaborator invested in transforming your vision into innovative and user-friendly digital solutions. Let's join forces and propel your project to new heights!

I have been building iOS apps for more than 14 years. I have very good experience in prototyping, designing, and development of mobile applications. Over the past years, I have helped many companies build mobile solutions, and I have been using a lot of good programming practices and patterns that help me write better code. Most of the applications I have worked on I have developed from scratch, so I know how to design application architecture and write clean and well-maintained code. I have also maintained legacy code and am very familiar with debugging and refactoring. Your satisfaction and delivering a quality product are my top priorities. Programming Experience: * Swift * Objective-C * Javascript * Strong object-oriented design skills * Deep understanding of OOP * Knowledge of multi-threaded, asynchronous code * Proven debugging and performance testing skills * Ability to write clean, well-factored UI code Technology Experience: * Strong knowledge of iOS SDKs * UI development through Interface Builder, Storyboards, and programmatically. (I like using PureLayout) * Experience with offline storage, threading, and performance tuning * Familiar with Analytics, Push Notifications, In-app Purchase, Location and Map APIs * Experience with Bluetooth LE (Low Energy) development * Experience with XMPP and Firebase chat. * Experience in creating REST / JSON / XML Web Services * PHP frameworks: CakePHP and Laravel * Very good understanding of code versioning tools: Git * Well-versed in build systems & dependency managers: Cocoa Pods and Carthage. Personal Qualities: * Ability to understand business requirements and translate them into technical requirements * Passion for quality and attention to detail * Focus on moving the business forward, always keeping the customer at the center of everything I do * Cooperative and helpful with a team, but also capable of working completely autonomously

Dear clients. You can call me Norbert. I have good experiences with Android and iOS app development. I developed the various apps. Dating app, video chatting app, delivery app, social networking app, fitness app My skill is in the following. Program: Objective-C, Swift, Java, C++, C, html, php, Json, Javascript Platform: Android, iOS, Mac OSX I have accumulate the enough experiences and ability to complete your project. - backend service - social login and sharing - push and local notification - video and image sharing - video and audio streaming - face detectiion using TCR - chatting with friend (using XMPP) - payment system using stripe - google map api and corelocation mapkit framework - Bluetooth and BLE and so on I wish the long term relationship with clients. I can accomplish your job with my experiences and skills successfully. Thanks for your time. Best regards.

🚀⭐️ London based freelancer available to meet face to face ⭐️🚀 ⭐️ ⭐️⭐️ 12+ years' experience in hands on coding ⭐⭐️⭐️ . 💯 % refund if you are not satisfied in last milestone ✅ No charges on revision of design files. ⭐️ ⭐️⭐️Provide only bespoke design ⭐️⭐️⭐️ 💻 Ex Amazon coder. 🚀 Full stack developer who can do both design and development. ⭐️ ⭐️⭐️4 hours of response time with 100% Client Dedication! ⭐⭐️⭐️ [ What I can provide ] ✔ Mobile App, Game development ✔ Website development ✔ Mobile Back end development ✔ Graphic design + UI & UX implementation ✔ Consulting in mobile app development ✔ Startup Development [ Experience ] ✔ On Demand Service app ✔ SAAS ✔ Uber like app ✔ Food delivery website and app ✔ Restaurant website and app ✔ Travel website and app ✔ Social network website and app ✔ Upwork like service marketplace website and app. ✔ Crowdfunding website and app ✔ Service provider finder app ✔ GPS apps ✔ Product selling website and app ✔ Event ticket-selling website ✔ Daily Deal website and app ✔ E-commerce website and app ✔ Dating website and apps ✔ Rideshare apps [ My Skill Set ] ✔ IOS, Android Native App(Java, Object-C, Swift3): Xcode, Android Studio, Eclipse, Cocoa, Cocoa Touch Frameworks. ✔ Website & Mobile Backend: Magento, Laravel, ASP.Net, PHP/MySQL, AngularJS, Node.js ✔ Game: Unity3D, Microsoft DirectX, SGI OpenGL. and other Game engines and libraries. ✔ Hybrid App Dev with Ionic / PhoneGap / Cordova ✔ Web service: XML/JSON, REST/SOAP, PHP, HTML5, ASP, JSP ✔ Cloud backend: Parse, Amazon, FireBase, Quickblox, Twilio, MongoDB ✔ Map Kit, GPS based real-time user navigation and Tracking ✔ Photo Sharing, Editor, Filter, Flexible UI App Design ✔ Chat & Messaging Engine: XMPP, OpenFire, OpenTok WebRTC, Ejabberd ✔ Media Streaming: Wowza, SoundCloud, Red5, Icecast ✔ VOIP, Cloud Communication: Twilio, Heroku, Tokbox ✔ Social Media Integration: Facebook, Twitter, Linkedin, Instagram, Youtube, Vimeo ✔ Google Map, Foursquare, Geolocation, GPS, Open Street Maps ✔ Online Payment Gateway: PayPal, Stripe, Venmo, Braintree integration ✔ Push notification: APNS(iOS), GCM(Android) ✔ Social API integration: Facebook, Twitter, Instagram, Google+ Also, I am very experienced in Node and PHP stacks and have a great experience with them. ✔ Node, express.js, Meteor.js, Socket.io, Ember.js, Foxx, phantom.js ✔ Javascript, angular2, vue.js, React.js, three.js ✔ PHP, laravel, CodeIgniter, zend2, Yii, WordPress, Drupal ✔ Bootstrap, Material, jquery-ui, D3.js ✔ Mysql, mongo, SQLite, PostgreSQL, arrangoDB ✔ Elasticsearch, redi-server ✔ AWS, digital ocean, Heroku, GoDaddy, Bluehost ✔ Github/Bitbucket, SVN Working passionately and never give up - this breeds excellence of developers! Let’s build a great app for the world together!

Java architect with more than 25 years of experience in following technologies- ✔ Java, Enterprise Java, Grails, Groovy, EJB, JSP, JSF2, Servlets, Hibernate,JPA, Mybatis, Struts(1.3,2.0), Netflix OSS, Spring Cloud, Spring Boot, Spring, Spring-MVC, Tiles, REST, AngularJS-2, Javascript, JQuery, AJAX, OSGi, SOAP, JSON, Ajax, Axis, JAX-WS, JSR-168, MDB, JMS, Hibernate-search, Lucene,Solr, Liferay, LDAP, AD, JUnit, Equinox, CXF, Grails with Groovy, Vaadin, OSGi, UML, Castor, Pentaho, Jasper, BIRT, Selenium, Swing, AWT, Oracle, DB2, SqlServer, MySql,PostgreSQL, MongoDB, Highcharts, Play, Activiti BPM, Camunda, Apache Kafka, Rabbit MQ, Elastic search, AWS, XMPP, Google Aanalytics, Piwik, Adwords, SEO, Docker ✔ Cloud services : AWS (EC2, RDS,SQS, S3), Google, Azure ✔ Application Servers: Websphere , Weblogic, JBoss, Glassfish, Geronimo ✔ Web Servers: Tomcat, Apache, Resin, Nginx ✔ Packages: WCS, ATG, Sterling Commerce(Yantra) OMS, Manhattan TMS, OMS, TPM, Oracle PIM, Tibco, Webmethods, WordPress, Zimbra. ✔ Social Integration : Facebook, Twitter, YouTube, Linkedin, Google+ Integration ✔ Payment Gateway : Paypal, Stripe, Twillo ✔ Methodology: RUP, Agile, XP, TDD ✔ IDE: IntelliJ, GGTS, Eclipse, NetBeans, JDeveloper, JBuilder, RAD ✔ Code Versioning: ClearCase, SVN, Mercurial, GIT ,TFS, StarTeam ✔ Quality: ClearQuest, Quality Center ✔ Build: Gradle, Maven, Ant, Ivy ✔ CI: Hudson, Jenkins ✔ Performance: JProfiler, JMeter, LoadUI ✔ Project Tracking: JIRA, Redmine, MPP ✔ Misc : Confluence, Crucible, Fitnesse, LPSolve, SoapUI, WLE, Toad, Rational Rose Have extensive expertise in developing complex business solutions using Java/Enterprise Java, Groovy with Grails and related technologies for the following verticals - Supply Chain Management * E-Commerce * Investment Banking and Finance * Analytics * Health-care Have developed enterprise products for * Manhattan's OMS, TMS, Inventory Management, Trading Partner Management * FICO's Insurance Fraud Manager - used predictive analytic models. Have taken multiple e-commerce applications to production and provided support thereafter for * Tesco change program * GE power system Parts-Edge system * Met-life online quote system Expertise in- Architecture, Design, OOAD, SOA, Design Patterns, UML, Providing Scalable Solution, RUP and Agile methodology, Java, Enterprise Java, Open Source Frameworks

Hi, Thanks to visit my profile. I am a iOS/Android app development expert for more than 8 years and I have developed various iOS/Android apps for iPhone, iPad, Android phones, Tablet before and I am a native mobile app developers using Apple Xcode and Eclipse/Android Studio. My skills are below, ✓ REST web services based apps ✓ E-commerce apps like Magento, Woocommerce based ✓ Social Networking apps, Geo-Locations based apps, Classifieds apps, ✓ Social Media APIs - FACEBOOK API, TWITTER API, GOOGLE+ API, FLICKR API, ✓ Google Map API, Google Direction and places API ✓ Paypal, Stripe and various payment gateway integration ✓ Apple Push notifications, GCM, Airpush and various others 3rd party push api ✓ Chat module using XMPP ✓ Multiple-language support like Arabic, Chinese, France, Japanese, etc ✓ SDKs like Admob, Chartboost , Mobclixs , iAds , Flurry, Google Analytics etc. ✓ Mobile App for Various Website(including WordPress). If you hire me, I will do my best to bring your idea to reality and you will get the best result. "Your success is my success!" Best regards, Ohoto Korpela