Software Testers Για Πρόσληψη
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Προβολή 212 αποτελεσμάτων
Χορηγημένοι Freelancer
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Senior Full-Stack Developer | Web & Mobile Platforms, Automation & Complex Integrations Full-stack developer based in Greece with over two decades of experience building web applications, digital platforms, and custom software solutions for agencies, startups, and organisations worldwide. Available for long-term...Senior Full-Stack Developer | Web & Mobile Platforms, Automation & Complex Integrations Full-stack developer based in Greece with over two decades of experience building web applications, digital platforms, and custom software solutions for agencies, startups, and organisations worldwide. Available for long-term collaborations, agency partnerships, and complex technical projects. I’ve collaborated with international digital agencies, private companies, and teams delivering solutions for governmental and defense-related projects, working in environments where reliability, security, and professionalism are essential. I am also a tech conference speaker and open-source contributor, including contributions to WordPress core, reflecting my long-term commitment to the development community and software quality standards. My focus is on translating complex requirements into stable, scalable systems. I don’t just build websites — I design and develop solutions that improve processes, automate workflows, and support long-term business growth. What I Can Help You With • Full-stack web application development • System architecture & technical consulting • Custom platforms and SaaS-style products • API development & third-party integrations • Automation systems and testing infrastructure • CMS & eCommerce solutions • Performance optimization & scalability • Cloud deployments & infrastructure • Mobile and hybrid applications Technical Approach I’m technology-agnostic and comfortable working across different stacks and system architectures. Over the years, I’ve designed and delivered solutions using a wide range of frontend frameworks, backend technologies, CMS platforms, and cloud environments, selecting the most appropriate approach based on performance, scalability, security, and long-term maintainability rather than being tied to a specific technology. Experience Includes • Large-scale web platforms • Custom automation and QA systems • Advanced CMS extensions and plugins • Reporting dashboards and internal tools • Mobile applications connected to cloud backends • Complex integrations across multiple systems What Clients Appreciate ✔ Deep experience and practical problem-solving ✔ Clean, maintainable, production-ready code ✔ Strong communication and reliability ✔ Ability to handle complex or undefined requirements ✔ Long-term technical thinking I’m comfortable collaborating with distributed teams or leading development independently from concept to deployment. If you’re looking for a developer who combines experience, technical depth, and business understanding, I’d be happy to discuss your project. λιγότερα
Πρόσλαβε τον/την eboxgr
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I am a passionate Full Stack Developer with over 8 years of experience specializing in Laravel, PHP, ReactJS, NextJS, Flutter, and Blockchain development. My expertise lies in building scalable web and mobile applications, integrating secure authentication systems, and developing blockchain-based...I am a passionate Full Stack Developer with over 8 years of experience specializing in Laravel, PHP, ReactJS, NextJS, Flutter, and Blockchain development. My expertise lies in building scalable web and mobile applications, integrating secure authentication systems, and developing blockchain-based solutions. Throughout my career, I have successfully led multiple projects, from custom CMS development to complex REST APIs, ensuring high performance, security, and seamless user experiences. I have also worked extensively with Stripe, Web3 authentication, and decentralized applications (dApps), allowing me to bridge traditional and blockchain technologies. In addition to my development skills, I am also a proficient SEO Strategy Planner and Expert. My SEO expertise encompasses both on-page and off-page optimization, including keyword research, content optimization, technical SEO, and link-building strategies. I have helped clients increase organic traffic, enhance their website visibility, and achieve top rankings on search engines. I take pride in my ability to architect efficient backend systems using Laravel, develop dynamic frontends with React and NextJS, and create cross-platform mobile apps with Flutter. My hands-on experience with Agile methodologies and team leadership enables me to manage projects efficiently while delivering top-notch results. With a deep understanding of search engine algorithms, content strategy, and web analytics, I am able to optimize websites for better search visibility and user engagement. I can also devise comprehensive SEO strategies that align with your business goals, helping to boost your online presence. I am eager to bring my technical expertise and problem-solving mindset to your team. I look forward to the opportunity to discuss how my skills in both full stack development and SEO strategy can contribute to your project’s success. λιγότερα
Πρόσλαβε τον/την irazon15
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I'm a swing trader and a full-stack developer specialized in complex projects: APIs, trading strategies, artificial intelligence, automation, and data analysis, with expertise across multiple languages and platforms. What I can do for you: AI/Machine Learning: Development and integration of LLMs, predictive models,...I'm a swing trader and a full-stack developer specialized in complex projects: APIs, trading strategies, artificial intelligence, automation, and data analysis, with expertise across multiple languages and platforms. What I can do for you: AI/Machine Learning: Development and integration of LLMs, predictive models, recommendation systems, and custom AI-based solutions Automation: Web scraping, bots, automated workflows, and task scheduling to eliminate manual processes Data Analysis: ETL pipelines, data visualization, predictive analytics, and automated reporting Algorithmic Trading: Development of automated strategies and indicators for MQL4/5, PineScript, TradeStation, NinjaTrader, MultiCharts, and other platforms Web/Mobile Development: Websites, full-stack applications with API and external service integration I focus on working deliverables, not prototypes. I communicate clearly about timelines and feasibility, without unrealistic promises. If a project has technical issues, I highlight them immediately with concrete alternatives. Free post-sale support included for any bug fixes or code clarifications - a non-obvious aspect that ensures your project's continuity. Portfolio and reviews demonstrate completed work. Available for one-time projects or ongoing collaborations. Feel free to ask any questions, don't worry! I prefer to clarify everything before starting. λιγότερα
Πρόσλαβε τον/την Asoenki
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Renesis Tech | Autonomous Intelligence Engineering Studio We don’t just write code. We architect autonomous intelligence systems. We partner with companies that view AI not as a feature, but as infrastructure. 1 - Dedicated Product Squads Every engagement is powered by a specialized Product Squad: - Senior Solutions...Renesis Tech | Autonomous Intelligence Engineering Studio We don’t just write code. We architect autonomous intelligence systems. We partner with companies that view AI not as a feature, but as infrastructure. 1 - Dedicated Product Squads Every engagement is powered by a specialized Product Squad: - Senior Solutions Architect & Lead Fullstack Engineer - UI/UX Product Designer - Dedicated QA & DevOps Specialists This ensures architectural consistency and 99.9% production stability. 2 - Adaptive 2026 Intelligence Stack Model-agnostic systems orchestrating the best global models: - OpenAI, Anthropic, Google, DeepSeek, Llama, and Mistral - Fully private hosting & fine-tuned open-weight models - Hybrid cloud and sovereign on-premise infrastructure 3 - Deterministic Knowledge Architecture | Advanced RAG Enterprise-grade RAG designed for reliability: - Knowledge graphs & Vector databases (Qdrant, Pinecone) - Multi-stage retrieval validation - Result: Minimized hallucinations and explainable outputs 4 - Multi Modal Intelligence Systems Real-time AI engineering across text, audio, image, and video embedded natively into the product experience. 5 - Strategic Solutions for Modern Markets - For Enterprises: Model Context Protocol & autonomous workflow orchestration. - For Startups: Agentic Native MVPs in 4 to 8 weeks with built-in scalability. 6 - High Performance Mobile Engineering Production-grade iOS and Android applications: - React Native & Flutter architecture - On-device AI inference & edge computation 7 - Operational Excellence - Regulatory awareness and global compliance: - GDPR compliance & SOC 2 alignment - Regional data residency requirements 8 - Performance Standards - Average response time under 15 minutes - 24/7 availability & Automated CI/CD - Sprint-level roadmap alignment focused on ROI 9 - Let’s Build the Future If you are building AI-native infrastructure, collaborate with our Dedicated Product Squad. Schedule a 15-minute technical consultation today. λιγότερα
Πρόσλαβε τον/την akkastech
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I can turn your idea into code. I have 8+ years of experience in software development, Machine Learning, Automation, Integration. I am highly specialized in creating automated systems for your business via Python, ML,AI,React,NodeJS,Excel Area of...I can turn your idea into code. I have 8+ years of experience in software development, Machine Learning, Automation, Integration. I am highly specialized in creating automated systems for your business via Python, ML,AI,React,NodeJS,Excel Area of work: -------------------------------------------------------------------- 1.Python: ► Automate the task 24*7 as per requirements. ► Machine Learning Techniques ► DeepLearning Algorithms ► Microservices ► Web scraping (Selenium,Scrapy,Thirdparty tools and Beautiful Soup) ► Captcha Resolver ► Message Queues (RabbitMQ) ► Scripting 2.CLOUD COMPUTING: ►AWS Cloudwatch ►EC2 Instances ►Boto3 ►S3 ►GCP 3.Operating Systems/Techstack: ►Windows 10/11 ►Ubuntu 20.04+ ►Git 4.Agile Platforms & Communication: ► JIRA ► Trello ► Zoom ► Google meet ► Microsoft Teams ► Slack/Discord λιγότερα
Πρόσλαβε τον/την koolvishruth
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Top-rated Full-Stack Developer with 330+ successful projects, a 4.9★ average rating, and 12+ years of hands-on experience delivering reliable, scalable, and high-performance solutions. With a 99% Job Success rate and 94% client recommendations, I am trusted by global clients for consistent quality, clear...Top-rated Full-Stack Developer with 330+ successful projects, a 4.9★ average rating, and 12+ years of hands-on experience delivering reliable, scalable, and high-performance solutions. With a 99% Job Success rate and 94% client recommendations, I am trusted by global clients for consistent quality, clear communication, and dependable delivery. What I Do Best Full-Stack Web Development - React, Next.js, Angular, Node.js, Laravel, CodeIgniter, PHP Mobile App Development - React Native, Flutter, Ionic — cross-platform mobile apps for iOS & Android Backend & API Development - REST APIs, GraphQL, Microservices Architecture CMS & Platforms - WordPress, Joomla, Headless CMS, Custom Admin Panels Cloud & DevOps - AWS, DigitalOcean, CI/CD Pipelines, Server Optimization Payment Gateway Integrations - Stripe, PayPal, Razorpay, Apple Pay, Google Pay, Square, Braintree, Subscription & recurring billing systems, Webhooks, payouts & multi-currency payments Third-Party Integrations & Automation SSO, OAuth (Google, Facebook, Apple, Enterprise SSO), Firebase Authentication, Twilio (SMS, WhatsApp, Voice), SendGrid, Amazon SES (Transactional Emails), Zapier, Make (workflow automation), Metabase & BI tool integrations Google APIs (Maps, Analytics, Calendar, OAuth), Meta / Facebook APIs, Shopify, WooCommerce, CRM integrations, Custom third-party APIs & system integrations Database Design & Optimization - MySQL, MongoDB, PostgreSQL, Firebase, Supabase DevOps & Infrastructure - Docker, NGINX, cPanel, Deployment, Monitoring & Ongoing Maintenance Why Choose Me - 12+ years of professional full-stack development experience - 320+ successfully completed projects with proven results - 500+ happy clients with a strong delivery record - 99% Job Success & 94% client recommendation score - Clear, transparent communication with regular progress updates - Clean, secure, and well-documented code - Strong post-delivery support and long-term maintenance - Long-term partnership mindset — not just task completion, λιγότερα
Πρόσλαβε τον/την gotucat
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════════════════════════⭐️⭐️⭐️⭐️⭐️════════════════════════ Greetings, I am Daniel, a dedicated and seasoned freelancer specializing in computer solutions. With a wealth of experience in Windows platforms, I am deeply committed to delivering top-tier solutions to my clientele. As the founder of Danysys, I boast a...════════════════════════⭐️⭐️⭐️⭐️⭐️════════════════════════ Greetings, I am Daniel, a dedicated and seasoned freelancer specializing in computer solutions. With a wealth of experience in Windows platforms, I am deeply committed to delivering top-tier solutions to my clientele. As the founder of Danysys, I boast a proven track record of consistently achieving outstanding outcomes. My expertise spans a wide array of areas including malware removal, software development in various languages such as C, C++, C#, VB, .Net, Pascal, FreeBasic, PureBasic, Python, PHP, PowerShell, AutoIt, InnoSetup, Scraping, and Scripting. Moreover, I am always open to expanding my skill set by learning and incorporating new technologies beyond those listed. My unwavering dedication lies in ensuring job satisfaction and surpassing client expectations. Let us collaborate to breathe life into your project! ════════════════════════⭐️⭐️⭐️⭐️⭐️════════════════════════ Saludos, soy Daniel, un freelancer dedicado y experimentado especializado en soluciones informáticas. Con una gran experiencia en plataformas Windows, estoy profundamente comprometido a brindar soluciones de primer nivel a mi clientela. Como fundador de Danysys, me enorgullezco de tener un historial comprobado de lograr resultados sobresalientes de manera constante. Mi experiencia abarca una amplia gama de áreas, incluyendo la eliminación de malware, el desarrollo de software en varios lenguajes como C, C++, C#, VB, .Net, Pascal, FreeBasic, PureBasic, Python, PHP, PowerShell, AutoIt, InnoSetup, Scraping y Scripting. Además, siempre estoy abierto a ampliar mi conjunto de habilidades aprendiendo e incorporando nuevas tecnologías más allá de las enumeradas. Mi inquebrantable dedicación radica en garantizar la satisfacción laboral y superar las expectativas de los clientes. Colaboremos para dar vida a tu proyecto. λιγότερα
Πρόσλαβε τον/την dany3j
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A seasoned full-stack developer with over 20 years of experience, specializing in crafting robust and scalable web applications. My expertise spans both front-end and back-end development, enabling me to deliver comprehensive solutions tailored to diverse client needs. With a proven track record in building complex...A seasoned full-stack developer with over 20 years of experience, specializing in crafting robust and scalable web applications. My expertise spans both front-end and back-end development, enabling me to deliver comprehensive solutions tailored to diverse client needs. With a proven track record in building complex systems, I excel at transforming business requirements into functional, user-centric applications. My proficiency in a wide range of technologies, including React, Node.js, PHP, AI/ML, and more, allows me to deliver innovative solutions that drive business growth. I am committed to building strong client relationships based on trust, open communication, and a shared vision for success. ? Key Skills ? Artificial Intelligence & Machine Learning - OpenAI API (GPT, DALL·E, Whisper) - TensorFlow, PyTorch - LangChain, LlamaIndex - Natural Language Processing (NLP) - AI Chatbots & Virtual Assistants - AI-Powered Automation & Recommendation Systems ? Front-End Development - React, Angular, Vue, TypeScript - JavaScript, jQuery, HTML5, CSS3 - Bootstrap, Tailwind CSS ? Back-End Development - Node.js, PHP (Laravel, CakePHP, CodeIgniter) - Python (Django, Flask) - SQL (MySQL, PostgreSQL, SQL Server) - NoSQL (MongoDB) ? CMS & E-commerce - WordPress, Magento, Shopify ☁️ Cloud Platforms - AWS, Azure, GCP ⚙️ Version Control & DevOps - Git, Bitbucket ? Misc Linux - Server setup and hardening - Shell scripting & automation - Systemd service management - Firewall (UFW, iptables) configuration - Performance monitoring (top, htop, iotop, netstat, etc.) - Log management (journalctl, logrotate) - Cron jobs and scheduled tasks - Package management (apt, yum, dnf) Audio/Video Streaming - Icecast, Icecast-KH, Shoutcast - AutoDJ, Liquidsoap - MediaCP setup & customization - Livestream metadata scripting and relay - Stream automation and reporting configuration Let’s collaborate to create exceptional digital experiences, enhanced with AI-driven innovation. ⭐ Featured Testimonial "You came through in a tough spot. There's another hosting company I was battling since January to deliver reliable metadata. They are a very large company. You outperformed them in a week. I've shared this with Super Hi-Fi as well. They were completely shocked I had a solution in such a short time. :-)" - Greg Arnold λιγότερα
Πρόσλαβε τον/την khantek
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⭐⭐⭐⭐⭐ NinjaTrader, MT4/5, TradingView, IBKR, QuantConnect, AI Trading ⭐⭐⭐⭐⭐ Turn your ideas and strategies into resilient trading systems that perform reliably beyond backtests and market cycles. I design systems to stay consistent across market regimes, withstand noise, slippage, latency, and partial...⭐⭐⭐⭐⭐ NinjaTrader, MT4/5, TradingView, IBKR, QuantConnect, AI Trading ⭐⭐⭐⭐⭐ Turn your ideas and strategies into resilient trading systems that perform reliably beyond backtests and market cycles. I design systems to stay consistent across market regimes, withstand noise, slippage, latency, and partial fills, avoid overfitting, degrade gracefully when assumptions fail, and handle real-world edge cases like gaps, spikes, and low liquidity. ✅ Trading Platforms & Execution • NT7 / NT8 strategies, indicators, trading panels, licensing • MT4 / MT5 indicators, Expert Advisors, Tickstory & QuantDataManager (99.90% backtests) • TradingView Pine Script indicators, strategies, screeners, alert webhook bridge • MultiCharts, QuantTower, Sierra Chart, Thinkorswim, Charles Schwab • IBKR TWS & IB Gateway API trading ✅ Backtesting & Quant Research • QuantConnect, VectorBT, Backtrader strategy backtesting, risk analysis • AI / RL strategy development (SB3, Gymnasium, SAC / PPO / A2C) ✅ Risk Analysis & Risk Management • Pre-trade risk checks (position limits, leverage) • Real-time P&L, drawdown & exposure monitoring with kill switches • Liquidity & execution risk (slippage, widening spread, commission, exchange fee) • Strategy risk validation (overfitting detection, walk-forward testing) ✅ Market Data & APIs • Stock market API integration & subscription cost optimization (IQFeed, DxFeed, Massive, AlphaVantage) ✅ Infrastructure & Data Systems • Time-series databases & tools: QuestDB, InfluxDB, TimescaleDB, ClickHouse, kdb+, • Kafka, Redis, Grafana ✅ Products & Monitoring • Trading product licensing • Copy trading systems • Trading performance monitoring dashboards ✅ Visualization & UX • Charting applications in C# Avalonia ✅ Sustainability & Discipline • Consistency, eyesight protection, and burnout-avoidance guidance ==================================================================================== "I believe the current trade I am in will be a loser ... a big loser at that." Larry Williams "Throughout all my years of investing I've found that the big money was never made in the buying or the selling. The big money was made in the waiting." Jesse Livermore "Don’t focus on making money, focus on protecting what you have." Paul Tudor Jones "Losing is extremely important. Winning’s easy. Losing is the key to trading." John Moulton "In trading, you have to be defensive and aggressive at the same time. If you are not aggressive, you are not going to make money, and if you are not defensive, you are not going to keep the money." Ray Dalio "Amateurs think about how much money they can make. Professionals think about how much money they could lose." Jack Schwager λιγότερα
Πρόσλαβε τον/την Pyyetru
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We are the one elite agency engineered to deliver proven 100% success across every layer of your business. We provide a complete digital and operational engine, from AI innovation and cutting-edge Full-Stack development to integrated Marketing, Finance, and HR solutions. Backed by a dedicated team of 50 senior...We are the one elite agency engineered to deliver proven 100% success across every layer of your business. We provide a complete digital and operational engine, from AI innovation and cutting-edge Full-Stack development to integrated Marketing, Finance, and HR solutions. Backed by a dedicated team of 50 senior specialists with over 9+ years of experience, we bring genuine enterprise-grade expertise and the agility of a dedicated partner. Our agency is proudly established in Pakistan and registered in the USA, having successfully delivered multiple complex projects over the past 9+ years. Our focus on Verified Excellence and a streamlined, Agile workflow ensures maximum efficiency and transparent communication on every project. We specialize in interconnected solutions that eliminate the need for multiple vendors: 1. Intelligent Development & AI: Custom LLM integration, AI Agents, and powerful automation (N8N). We master backends using Python, Node.js, Nest.js, Laravel, .NET, and C#, paired with modern frontends like React, Next.js, and Vue.js. 2. Infrastructure & Platforms: Expert cloud deployment on Azure and AWS, database mastery (SQL), and specialized platform development for WordPress and eCommerce (Shopify, WooCommerce). 3. Business Operations: Integrated support for Digital Marketing, SEO, HR, and Accounting ensures your technical solutions are aligned with your core business growth. Our goal is simple: to be your most reliable Preferred Partner, managing the entire lifecycle from coding to compliance. Let's discuss how our Full-Spectrum Expertise and dual-region stability can guarantee your business success. λιγότερα
Πρόσλαβε τον/την Dtechonolgy
