Software Engineers zum Anheuern
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Gesponserte Freelancer
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Hi, I'm Johnnie Reece, a Preferred Freelancer and senior full-stack, mobile & emerging tech expert with 10+ years delivering enterprise-grade, high-performance solutions for startups and Fortune 500 companies. 🚀 Core expertise and current tech stack: → Frontend & Web 🌐: React, Next.js (App Router, Server Actions),...Hi, I'm Johnnie Reece, a Preferred Freelancer and senior full-stack, mobile & emerging tech expert with 10+ years delivering enterprise-grade, high-performance solutions for startups and Fortune 500 companies. 🚀 Core expertise and current tech stack: → Frontend & Web 🌐: React, Next.js (App Router, Server Actions), Angular, TypeScript, Tailwind CSS, Redux Toolkit, React Query, Zustand, shadcn/ui → Mobile 📱: React Native, Flutter, Expo, Firebase — cross-platform iOS/Android apps with native feel; Java (native Android development, legacy support & integrations) → Backend & APIs ⚙️: Node.js (NestJS, Express), Java (Spring Boot, Hibernate, Jakarta EE), C# .NET 8/9, ASP.NET Core, EF Core, SignalR, gRPC; Python (FastAPI, Django, Flask) → CMS & E-commerce 🛒: Shopify (themes, apps, Liquid, API integrations, headless/Headless Commerce), WordPress, WooCommerce, Elementor — custom themes/plugins, secure & optimized sites → Blockchain⛓️: Solidity, Ethereum, Smart Contracts, Web3.js, Ethers.js, Hardhat — dApps, NFTs, DeFi → Automation 🤖: Python (Selenium, Scrapy), RPA, Zapier/n8n/Make.com, custom bots & AI tools → Cloud & DevOps ☁️: AWS (Lambda, ECS/Fargate, RDS, S3, Cognito, CDK), Docker, Terraform, GitHub Actions, CI/CD What I deliver – every project: ✅ Pixel-perfect, responsive web & mobile apps (98–100 Lighthouse scores) ✅ Native-feeling cross-platform mobile solutions (React Native + Flutter) + native Android with Java ✅ Secure, scalable backends (Node.js/NestJS, Java/Spring Boot, .NET/Python) with real-time features, OAuth2, PCI compliance, microservices & enterprise integrations ✅ High-performance Shopify stores (custom themes, private/public apps, Liquid development, API integrations, headless setups) + WordPress/WooCommerce sites & custom plugins ✅ Blockchain dApps, smart contracts & Web3 integrations ✅ Automation bots, scraping, workflows & cost-saving optimizations ✅ Full-cycle development: analysis → architecture → MVP → deployment → support ✅ Smooth legacy migrations to modern stacks (React/Next + mobile + Node.js/Java/.NET/Python + AWS) ✅ Auto-scaling, cost-optimized infrastructure with 99.99%+ uptime My approach: I act as your technical partner — daily updates with live demos, direct access (no middlemen), proactive advice on architecture, performance, security & costs. Code is clean, documented, and built for long-term maintainability & easy handoff. Clients return because I deliver faster, cleaner, more reliably — with zero surprises and maximum value. Ready to launch your project with a verified Preferred Freelancer skilled in web, mobile, Shopify, WordPress, blockchain, automation, cloud & full-stack Node.js/NestJS development? Message me now! I reply fast and can start immediately. Let's create something exceptional! 💼 weniger
johnnier3
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Schreiben von Forschungsarbeiten, Technisches Schreiben, Berichterstellung, Artikel schreiben, UML-DesignMaster’s degree holder with over 10 years of experience in academic research writing, data analysis, and statistical modeling. I specialize in producing well-structured, evidence-based academic work for undergraduate, postgraduate, and doctoral-level clients. My work is grounded in peer-reviewed literature, sound...Master’s degree holder with over 10 years of experience in academic research writing, data analysis, and statistical modeling. I specialize in producing well-structured, evidence-based academic work for undergraduate, postgraduate, and doctoral-level clients. My work is grounded in peer-reviewed literature, sound research methodologies, and strict adherence to academic integrity standards. I have successfully completed research projects involving: ✔️Quantitative, qualitative, and mixed-methods studies ✔️Hypothesis testing, regression analysis, ANOVA, time-series analysis, and panel data ✔️Survey design, instrument validation, and data interpretation ✔️Systematic literature reviews and meta-analytical support ✔️Research proposals, theses, and dissertations ✔️Journal articles (APA, Harvard, MLA, IEEE) ✔️Data analysis using SPSS, R, Python, SAS, Excel, and Power BI Academic Coursework & Learning Support: ✔️ Weekly assignments and continuous assessment tasks ✔️ Discussion posts and academic reflections ✔️ Quizzes, tests, and timed assessments ✔️ Lab-based coursework and platform-guided assignments ✔️ Pearson, uCertify, McGraw-Hill Connect, WileyPLUS, MindTap, Blackboard, Moodle tasks ✔️ Data-driven lab reports and technical coursework Software Analysis, Design & Implementation (Academic & Project-Based): ✔️ Software Requirements Specification (SRS) ✔️ Business Requirements Document (BRD) ✔️ Functional & Non-Functional Requirements Analysis ✔️ System Analysis & Design (Use Case, Class, Sequence, Activity Diagrams) ✔️ Database Design (ERD, EERD, normalization up to 3NF/BCNF) ✔️ SQL Development & Database Implementation ✔️ Oracle, MySQL, PostgreSQL, MSSQL, MongoDB ✔️ Documentation aligned with IEEE & academic standards What sets me apart: ✔️ Original, plagiarism-free academic writing ✔️ Manual paraphrasing — no AI humanizing tools ✔️ Clear academic tone and logical argumentation ✔️ Unlimited revisions until expectations are met weniger
OWINOKAMAU
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Welcome to my profile! At CV Infotech, we’re more than just a team of experts; we’re your trusted partner for all your project needs. I am passionate about helping others, and I proudly donate 5% of our revenue to feed stray dogs. ❤️ If you’re here, you’re likely looking for the most reliable, skilled, and...Welcome to my profile! At CV Infotech, we’re more than just a team of experts; we’re your trusted partner for all your project needs. I am passionate about helping others, and I proudly donate 5% of our revenue to feed stray dogs. ❤️ If you’re here, you’re likely looking for the most reliable, skilled, and experienced freelancer team to bring your next project to life. Congratulations, you’ve found the right partner! My Vision: To be a brand you can rely on, always delivering top-tier solutions and supporting your growth over the long term. Why I’m the Best Fit: ✅ Top 1% Verified Freelancer: Ranked among the top 1% of freelancers on Freelancer.com, 150+ recommendations with a 99% project completion rate over the last 12 years. 🏆 Award-Winning Freelancer: Recognized with multiple awards such as: Best React JS Developer, Best WordPress Developer, Best WooCommerce Developer, Best Shopify Developer, Best Laravel Developer and the fastest replit app developer. #1 WordPress Website Customization Expert #1 Freelancer to deliver large scale replit app ✅ 500+ Exceptional Projects with 150+ client recommendations. ⭐ Preferred & Verified: As a Preferred Freelancer, I am part of the elite 1% of 60M+ freelancers on the platform. How I Deliver Excellence: End-to-End In-House Development: No outsourcing – ensuring the highest quality and consistency in every project. Core Expertise: NowPayments Gateway Integration Paypal Payment Gateway Integration Stripe, Crypto Payment Gateway integrations Replit developer with extensive experience in developing Replit app development and Replit project deployment. We are publishing Replit app live specialist. MEAN & MERN Stacks: Expertise in AngularJS and ReactJS development, bringing modern solutions to your web applications. Replit AI Code Writer: Skilled in leveraging Replit for AI-driven code generation. We are the best Replit App Developers having over 120+ big and small Replit projects delivered/running. AI Integration: Experienced with ChatGPT, OpenAI, and AI chatbot integration, creating custom solutions with AI-powered prompts. Progressive Web Apps (PWA): PWA development for seamless mobile and web experiences. PHP Developer: Expert in Laravel, CodeIgniter, CakePHP, and custom PHP solutions. CMS Expert: Specialized in WordPress, Shopify, Magento, BigCommerce, OpenCart, Joomla, and more. Customization Specialist: WordPress theme, plugin customization, and custom theme/plugin development. Security & Performance: Expertise in malware removal, website performance optimization, Google PageSpeed, and fixing website vulnerabilities. Payment Integration: Integration of Stripe Connect for split payments in multivendor sites. Let’s Build Something Amazing: Ready to work with the most trusted freelancer team? Hit the "Hire CV Infotech" button and let’s create something extraordinary together! ❤️ weniger
CVInfotech
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Professional software developer with over 25 years of overall experience in software development and maintenance looking for challenge projects fit my skills. Main specialization: • developing Windows Desktop and Web solutions (mainly using C, C++, C#, ASP.NET) • converting/translating/porting code from one...Professional software developer with over 25 years of overall experience in software development and maintenance looking for challenge projects fit my skills. Main specialization: • developing Windows Desktop and Web solutions (mainly using C, C++, C#, ASP.NET) • converting/translating/porting code from one programming language to another programming language. • writing wrappers around miscellaneous libraries, packages and SDKs, mainly for using it with other programming languages. • consuming HTTP based APIs, (RESTful APIs, etc) • scraping data from web sites, both with and without Selenium Secondary specialization: • developing Linux and cross-platform solutions and utilities. • scripts/utilities to process Excel spreadsheets • Microsoft Office Automation weniger
vano101
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With over 10 years of experience in the IT industry, I am confident in my ability to make your project a resounding success. Holding a B.S. degree in computer science and numerous successful projects under my belt, I am well-equipped to meet your needs. Services I Offer: ⭐️ Web Development ⭐️ Mobile Development ⭐️...With over 10 years of experience in the IT industry, I am confident in my ability to make your project a resounding success. Holding a B.S. degree in computer science and numerous successful projects under my belt, I am well-equipped to meet your needs. Services I Offer: ⭐️ Web Development ⭐️ Mobile Development ⭐️ Blockchain Development ⭐️ AI/ML Development ⭐️ Embedded Software Development Why Choose Me for Your Project: ✔ Expertise and Experience: My comprehensive knowledge allows me to consistently deliver outstanding results. ✔ Uncompromising Quality: Dedicated to customer satisfaction, I strive for excellence in every project I undertake. ✔ Timely Delivery: Committed to meeting deadlines, I ensure that your plans can proceed uninterrupted. ✔ Effective Communication: Attentive to your goals and requirements, I provide regular progress updates. ✔ Flexible and Adaptable: Open to suggestions and keen on incorporating changes, I am dedicated to achieving your desired outcomes. ✔ Competitive Pricing: Offering competitive rates for my services, I never compromise on the quality of work delivered. Are you ready to embark on this journey with me? Contact me now for further discussion. Thank you weniger
pauldinhdev
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Professional Software Developer with over 7 years of experience in software development and maintenance, seeking challenging projects that match my expertise. Primary Expertise: • Development of Windows Desktop and Web solutions (primarily using C, C++, C#, ASP.NET) • Code migration and translation between...Professional Software Developer with over 7 years of experience in software development and maintenance, seeking challenging projects that match my expertise. Primary Expertise: • Development of Windows Desktop and Web solutions (primarily using C, C++, C#, ASP.NET) • Code migration and translation between programming languages • Creation of wrapper libraries for third-party SDKs and packages to enable cross-language compatibility • Integration of HTTP-based APIs (including RESTful services) • Web scraping implementation, with and without Selenium automation Additional Expertise: • Development of Linux and cross-platform solutions • Creation of automation tools for Excel data processing Technical Highlights: - Extensive experience in systems integration and API development - Strong background in cross-platform compatibility - Expert in legacy code modernization - Proficient in automated data extraction and processing weniger
andriik18
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🚀 I build AI-powered SaaS platforms using OpenAI, LLMs, React, Next.js, and Node.js. If you need a production-ready AI application - RAG system, AI chatbot, OpenAI integration, or scalable SaaS web app - I can architect, build, and deploy it end-to-end on AWS. I focus on real AI systems that scale, not demos. 🧠 AI...🚀 I build AI-powered SaaS platforms using OpenAI, LLMs, React, Next.js, and Node.js. If you need a production-ready AI application - RAG system, AI chatbot, OpenAI integration, or scalable SaaS web app - I can architect, build, and deploy it end-to-end on AWS. I focus on real AI systems that scale, not demos. 🧠 AI & LLM Engineering -OpenAI API Integration -LLM Applications (GPT-based systems) -RAG (Retrieval-Augmented Generation) Architecture -AI Chatbots & Conversational AI -AI Agents & Automation Systems -Embeddings & Vector Databases -Knowledge-Base AI Platforms -LangChain & LLM Pipelines Building intelligent AI systems combined with strong backend architecture. 💻 Full-Stack SaaS Development -React.js Frontend Applications -Next.js (SSR, App Router, API Routes) -Node.js Backend Architecture -TypeScript Development -REST & GraphQL APIs -Secure Authentication (JWT / OAuth) -Multi-Tenant SaaS Platforms -Real-Time Web Applications Clean architecture. Scalable backend. Maintainable code. ☁ Cloud & Infrastructure -AWS Deployment & Scaling -Docker Containerization -Kubernetes Workloads -PostgreSQL / MongoDB -Redis Caching -Microservices Architecture From MVP to enterprise-grade AI SaaS. 🎯 Core Deliverables ✔ AI Chatbot Systems ✔ RAG Applications ✔ OpenAI SaaS Platforms ✔ Full-Stack Web Applications ✔ Cloud-Deployed AI Tools ✔ Automation & AI Workflows weniger
volodymyrd45
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Versatile Professional with expertise in Front End / Back End development, Mobile App development. Well versed in latest and greatest technologies including React, React Native, JavaScript, Material UI, Node, ASP.Net Core, Laravel, Django, Flutter, WordPress, Shopify, SpringBoot, etc. I collaborate with my clients on...Versatile Professional with expertise in Front End / Back End development, Mobile App development. Well versed in latest and greatest technologies including React, React Native, JavaScript, Material UI, Node, ASP.Net Core, Laravel, Django, Flutter, WordPress, Shopify, SpringBoot, etc. I collaborate with my clients on regular basis and provide them solutions to address their business needs and pain points. Please feel free to reach out to make your idea stand out. weniger
ravd82
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Where technical precision meets real-world impact Hi, I’m Martin, a Senior Software Engineer with over 13 years of experience building robust backend systems and smart automation solutions. My core expertise lies in Python development, with a strong focus on Django, process automation, and hardware-software...Where technical precision meets real-world impact Hi, I’m Martin, a Senior Software Engineer with over 13 years of experience building robust backend systems and smart automation solutions. My core expertise lies in Python development, with a strong focus on Django, process automation, and hardware-software integration using tools like Raspberry Pi and Arduino. ✴️ Core Technical Skills - Python Development – Efficient and scalable backend systems - Django & Django REST Framework – Clean, secure, and well-documented APIs - Process Automation – From workflow optimization to RPA and web scraping - Hardware Integration – Raspberry Pi, Arduino, sensors, and custom electronics - Linux Server Administration – Secure deployments, performance tuning, and uptime reliability - Database Management – MySQL, PostgreSQL, SQLite - Basic Frontend Development – Clean and functional interfaces using HTML, CSS, and JavaScript ✴️ What I Build - Custom RESTful APIs for mobile or web apps - End-to-end IoT solutions and embedded systems - Automation tools that reduce manual work - Monitoring dashboards with real-time hardware data - Backend platforms with hardware communication layers ✴️ Why Work With Me? - Specialized Expertise – I solve technical problems with depth, not with shortcuts - End-to-End Ownership – From architecture to deployment and post-launch support - Clear Communication – Technical concepts translated into actionable plans - Long-Term Support – I don’t disappear after delivery; I ensure everything works and improves Let’s Work Together If you’re looking for a backend engineer who understands both software and hardware, and who can deliver efficient, future-ready solutions, I’d love to hear about your project. ✴️ Reach out to discuss how we can bring your ideas to life. weniger
martini002
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ravikumarsingh1 ravikumarsingh1
$15 USD / Stunde
Cloud, DevOps, React/Next.js, N8N & AI ML 5+ yearIndia🚀 Automation, DevOps & Full-Stack Engineer | AI Workflows | AWS Cost Optimization I help startups and businesses automate operations, scale infrastructure, and build production-grade applications using an automation-first engineering approach. 🤖 Automation & AI Systems (Primary Focus) I design end-to-end automation...🚀 Automation, DevOps & Full-Stack Engineer | AI Workflows | AWS Cost Optimization I help startups and businesses automate operations, scale infrastructure, and build production-grade applications using an automation-first engineering approach. 🤖 Automation & AI Systems (Primary Focus) I design end-to-end automation workflows that eliminate manual work and connect business tools into self-running systems. Expertise n8n workflow automation (self-hosted & cloud) AI integrations (OpenAI / ChatGPT) Lead capture → qualification → booking automation WhatsApp, Instagram & CRM automation API integrations, webhooks & backend orchestration Google Sheets & database automation ✔ Reduce manual work by 70–90% ✔ Instant lead response & automated operations ⚙️ DevOps & Cloud Engineering Production-ready cloud infrastructure focused on scalability, reliability, and cost efficiency. AWS architecture & cost optimization (30–40% savings) Kubernetes deployment & disaster recovery CI/CD pipelines (Jenkins, GitHub Actions, CodePipeline) Terraform & Ansible (Infrastructure as Code) Docker & microservices Monitoring: CloudWatch, Prometheus, ELK, Grafana Impact: Reduced deployment time by 50% and recovered critical production systems under pressure. 💻 MERN Stack Development (React / Next.js) Building fast, scalable applications with modern performance standards. React.js & Next.js (SEO & performance optimized) Node.js / Express APIs MongoDB & PostgreSQL REST & GraphQL APIs Redis caching Apps handling 8k+ daily users with <2s load time. 🛒 Shopify & 🌐 WordPress Solutions Shopify setup, customization & automation High-performance WordPress sites (90+ PageSpeed) SEO-first architecture Performance & hosting optimization Automation integrations ☁️ Data Engineering & Automation Python & PySpark pipelines AWS Glue, Lambda & ETL workflows Automated testing (PyTest, BDD) 📊 Proven Results • FinTech: AWS cost reduced ₹2.8L → ₹1.6L/month • Healthcare SaaS: Kubernetes recovery in 4.5 hrs • E-commerce: Analytics dashboard serving 8k+ users/day 🧰 Tech Stack AWS, Docker, Kubernetes, Terraform, Jenkins, n8n, OpenAI APIs, React, Next.js, Node.js, Python, MongoDB, PostgreSQL, Shopify, WordPress, Linux, Git, Networking. ✅ Why Clients Hire Me ✔ Automation-first mindset ✔ DevOps + Full-Stack + AI expertise in one engineer ✔ Fast communication & reliable delivery ✔ Scalable, production-grade solutions weniger
ravikumarsingh1
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