İşe Alınmak Üzere Spring Security Developers
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With 15+ years of experience in software application development, I have worked with renowned companies such as Avaya, Pramati, CGI, Yash, GMS, Vcentric, Meta-io, CTI Services, and MMTex. My core strengths lie in problem-solving, algorithms, system design, and building high-performance, low-latency systems capable of...With 15+ years of experience in software application development, I have worked with renowned companies such as Avaya, Pramati, CGI, Yash, GMS, Vcentric, Meta-io, CTI Services, and MMTex. My core strengths lie in problem-solving, algorithms, system design, and building high-performance, low-latency systems capable of handling complex, real-time workloads. I specialize in efficient coding, performance optimization, scalable architectures, and event-driven systems, ensuring platforms are robust, secure, and future-ready. Over the past 8+ years, I have led and managed teams, delivering complex trading, fintech, and SaaS platforms with seamless execution. I am an AI/ML expert with deep experience in algorithmic trading, AI-driven signal generation, predictive analytics, reinforcement learning, NLP, and market regime detection. Highly skilled in Python, TensorFlow, PyTorch, Scikit-Learn, with hands-on expertise in backtesting engines, walk-forward optimization, portfolio & risk-based position sizing, and real-time market data processing (WebSockets, FIX, tick-level data, order books). I have strong experience in execution systems (OMS/EMS), smart order routing, PnL & drawdown control, and kill-switch / circuit-breaker mechanisms. My background also includes blockchain & DeFi trading (Ethereum & Solana), on-chain analytics, automation bots, and cybersecurity covering vulnerability assessment, penetration testing (Web, API, Network, Cloud), secure coding, and malware analysis. Mobile App Development (Android & iOS) ✅ Trading & fintech mobile apps (real-time data, charts, alerts) ✅ Flutter, React Native, Swift (iOS), Kotlin (Android) ✅ Secure APIs, low-latency backend integration, CI/CD, monitoring ✅ App Store & Play Store deployment, analytics, performance tuning Frameworks ✅ Spring, Django, FastAPI, Laravel, ASP.Net, Nest.js, Next.js, Nuxt.js, React, Vue, Angular, Web3.js Backend Development ✅ Java, Python, Node.js, PHP, Laravel, ASP.Net, Go, Ruby ✅ Async systems, message queues, real-time processing Frontend & UI ✅ JavaScript, TypeScript, React & Redux, Vue, Angular, SCSS, Webpack Databases ✅ MySQL, PostgreSQL, Oracle, SQL Server, Cassandra, CouchDB ✅ Time-series & high-frequency data handling DevOps, Cloud & Infra ✅ Docker, Git, SonarQube, JMeter, Selenium ✅ AWS, Google Cloud, Azure, OpenStack ✅ Linux/Unix, Nginx, Apache, Tomcat, SSL ✅ High-availability, failover, monitoring Architecture ✅ Microservices, SOA, Event-Driven & Distributed Systems Portfolio & Live Applications GitHub https://github.com/DX26-io https://github.com/viz-centric Live Applications https://appwise.net.au/ https://dev1.app.ecommify.io/ https://pordoinspect.com/ https://serbob.com/ https://www.moneybox.au/ daha az
johibkhan
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**Certifications:** - Certified in Digital Forensics - Certified Ethical Hacker - Certified in API Security **Professional Overview:** I’m Shofiur Rahman, a Certified Ethical Hacker and Professional Penetration Tester with over a decade of experience in the cybersecurity field. Recognized as one of the top 1% of...**Certifications:** - Certified in Digital Forensics - Certified Ethical Hacker - Certified in API Security **Professional Overview:** I’m Shofiur Rahman, a Certified Ethical Hacker and Professional Penetration Tester with over a decade of experience in the cybersecurity field. Recognized as one of the top 1% of Cybersecurity Engineers on Freelancer.com, I have established a reputation for delivering exceptional security services tailored to meet the needs of diverse clients. I offer a comprehensive suite of cybersecurity services, including white, gray, and black hat penetration testing, network and host auditing, policy development, and Business Impact Analysis. My expertise extends to black and gray box testing in both live environments and controlled lab settings. I am proficient in identifying and mitigating a wide range of attack vectors, including zero-day vulnerabilities (0days), and I am experienced in conducting vulnerability assessments for PCI and HIPAA compliance. **Why Choose Me:** - **Proven Expertise:** With a rich portfolio that highlights my work on critical projects, I have consistently delivered high-impact solutions that protect and strengthen security postures. - **Trusted Professional:** As one of the most trusted cybersecurity experts on Freelancer.com, my work is characterized by its precision, thoroughness, and adherence to best practices. - **Comprehensive Reporting:** I provide detailed, actionable reports that not only identify vulnerabilities but also offer clear guidance on remediation. My reports are crafted to meet the needs of both technical and non-technical stakeholders, ensuring that everyone involved can understand and act on the findings. **Explore My Work:** To gain further insight into my capabilities, I invite you to review my portfolio. Additionally, you can request a sample of a previous Penetration Testing report, which showcases my approach, methodologies, and the depth of my analysis. This will give you a clear understanding of my skills and the quality of work I deliver. **Service Description:** **Core Skills:** - Penetration Testing - Web Application Security - Social Engineering - Red Team Assessment - Ethical Hacking & Countermeasures - Vulnerability Assessment - Malware Analysis - Server Security Hardening **Tools of the Trade:** - BurpSuite Professional - sqlmap - nmap - Metasploit - OpenVAS - Mimikatz With a commitment to excellence and a proven track record of success, I am confident in my ability to help secure your digital assets against emerging threats. Let’s work together to build a safer, more secure environment for your business daha az
srmukul2
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Founded on a passion for solving complex business challenges through technology, OrFactor has delivered mission-critical solutions for clients in 25+ countries, including the USA, UK, Canada, Australia, Germany, France, the Netherlands, and Norway. Over the years, we’ve grown into a global team of 70+ specialized...Founded on a passion for solving complex business challenges through technology, OrFactor has delivered mission-critical solutions for clients in 25+ countries, including the USA, UK, Canada, Australia, Germany, France, the Netherlands, and Norway. Over the years, we’ve grown into a global team of 70+ specialized engineers with a 100% project completion rate — we finish what we start. Our expertise spans custom software development, enterprise integration, cloud transformation, DevOps, and data-driven digital solutions, all managed with precision, transparency, and a results-first mindset. From startups to Fortune 500 enterprises, our mission remains simple: build scalable, high-impact solutions that help clients innovate faster, reduce risk, and achieve measurable success. ⚡ Why Clients Trust Us ✅ 70+ specialized engineers • 21 years experience • 500+ projects delivered ✅ ZERO abandonment—100% completion guarantee ✅ Free 1-hour consultation • Dedicated PM • Daily updates ✅ 1 month FREE maintenance • NDA ready • 100% code ownership ✅ Deliver 2 weeks early (average) • Crystal-clear English • 24/7 support 💼 Our Expertise ✅ Custom Website Development ✅ Mobile App Development ✅ E-commerce Solutions ✅ Enterprise Software & SaaS ✅ API Development & Integration ✅ Cloud Infrastructure & DevOps ✅ AI/ML Integration ✅ UI/UX Design ✅ CMS & Content Platforms ✅ Database Design & Optimization ✅ Security & Compliance ✅ Maintenance & Support 🛠️ Technical Stack Frontend: React • Next.js • Vue.js • Angular • TypeScript • Tailwind CSS • Bootstrap Backend: Node.js • Python (Django) • PHP (Laravel) • Java (Spring Boot) • .NET Core • Ruby on Rails • Perl Mobile: Flutter • React Native • iOS (Swift) • Android (Kotlin) Database: PostgreSQL • MySQL • MongoDB • Redis • Firebase Cloud/DevOps: AWS • Google Cloud • Azure • Docker • Kubernetes AI/ML: OpenAI/Claude API • TensorFlow • Custom Chatbots Security: OWASP • GDPR • PCI-DSS • HIPAA Your project deserves a partner who cares. Whether you're launching a startup, scaling a business, or transforming operations—we're here to make it happen. Team OrFactor | Your Partner in Engineering Excellence Since 2004 daha az
ShahinurMithun
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I am a full-stack developer specializing in building internal dashboards and management systems for small teams and organizations. I work with React / Next.js on the frontend and Spring Boot (Java) on the backend, implementing authentication, role-based access, REST APIs, and database-driven workflows using MongoDB...I am a full-stack developer specializing in building internal dashboards and management systems for small teams and organizations. I work with React / Next.js on the frontend and Spring Boot (Java) on the backend, implementing authentication, role-based access, REST APIs, and database-driven workflows using MongoDB and MySQL. I have completed the CDAC Advanced Computing program with specialization in High Performance Computing, which strengthened my foundation in parallel programming, performance optimization, and systems-level problem solving. I apply this background to write efficient, maintainable backend services and scalable application architectures. Currently open to freelance and contract opportunities. daha az
ParagHande
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Technologies: Java, Spring MVC, SpringBoot, Spring Microservices. SQL,MongoDB,JPA,Hibernate HTML,CSS,Javascript,Jquery,Angular Docker, Kubernetes Apache Kafka,RabbitMQ Git, Svn AWS,Adyen,Stripe Experience :9+ yearsTechnologies: Java, Spring MVC, SpringBoot, Spring Microservices. SQL,MongoDB,JPA,Hibernate HTML,CSS,Javascript,Jquery,Angular Docker, Kubernetes Apache Kafka,RabbitMQ Git, Svn AWS,Adyen,Stripe Experience :9+ years daha az
nadymbaba
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Senior Systems & Security Engineer with 15+ years in enterprise-grade IT. I design, harden, and operate high-availability infrastructure, and I streamline delivery with automation and clean processes. My focus: reliability, security, and clear documentation—so changes are low-risk and handovers are...Senior Systems & Security Engineer with 15+ years in enterprise-grade IT. I design, harden, and operate high-availability infrastructure, and I streamline delivery with automation and clean processes. My focus: reliability, security, and clear documentation—so changes are low-risk and handovers are effortless. Strengths: Infrastructure architecture & operations (Linux/Windows, virtualization, networking) Security hardening, identity & access, monitoring/observability Automation & DevOps practices (CI/CD, config management, IaC) Migrations and upgrades with minimal downtime Concise runbooks, risk-aware planning, and stakeholder-friendly communication Certifications: CompTIA Security+, Microsoft MCSE/MCSA/MCITP Languages: English (C2), German (C1), native Romanian Location: Germany • NDA-friendly • Reliable and responsive daha az
iosifpeterfi
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I am a full-stack developer with hands-on experience in Spring Boot, React, JavaScript, MySQL, and PostgreSQL. I focus on building secure, scalable, and maintainable web applications. I enjoy solving real-world problems, improving application performance, and writing clean, well-structured code.I am a full-stack developer with hands-on experience in Spring Boot, React, JavaScript, MySQL, and PostgreSQL. I focus on building secure, scalable, and maintainable web applications. I enjoy solving real-world problems, improving application performance, and writing clean, well-structured code. daha az
abrarm741
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Senior Full-Stack Engineer & UI/UX Specialist | 20+ Years Coding Experience | Web, SaaS, AI/ML, Blockchain & Automation Expert Hello! I’m Toma, a Senior Full-Stack Software Engineer from Japan. Influenced by my father, a developer, I was called a code prodigy from a young age. I joined the freelancing world to...Senior Full-Stack Engineer & UI/UX Specialist | 20+ Years Coding Experience | Web, SaaS, AI/ML, Blockchain & Automation Expert Hello! I’m Toma, a Senior Full-Stack Software Engineer from Japan. Influenced by my father, a developer, I was called a code prodigy from a young age. I joined the freelancing world to explore a new culture of work and collaboration. I have 8+ years of professional development experience—though I actually started coding at the age of 10, which makes it more than 20 years of hands-on experience. I am passionate about learning and enjoy taking on challenges. I find joy and confidence in solving complex problems. I have the ability to develop from scratch and adapt quickly, even when working with unfamiliar stacks or codebases. Therefore, I believe there is no technology or stack too new or too difficult for me to handle. I specialize in web, SaaS, AI/ML, blockchain, automation, e-commerce, and cloud solutions, combining clean code, modern UI/UX design, and scalable architecture to deliver exceptional results. ⚡ Skill Set ✔ Programming Languages: Python, PHP, JavaScript, TypeScript, Java, C#, Solidity, HTML5, CSS3, SQL ✔ Frameworks & Libraries: React, Next.js, Vue.js, Node.js, Express.js, Laravel, CodeIgniter, Django, Flask, FastAPI, TensorFlow, PyTorch, .NET (SaaS-ready frameworks) ✔ Databases & BaaS: MySQL, PostgreSQL, MongoDB, Redis, Firebase, Supabase ✔ Blockchain: Ethereum, Binance Smart Chain, Web3.js, Hardhat, Truffle ✔ CMS & E-Commerce: WordPress, Elementor, WooCommerce, PrestaShop, Shopify, Magento ✔ Automation & Workflows: n8n, Zapier, Make (Integromat) ✔ Chatbots & AI Tools: GPT-powered assistants, Dialogflow, Rasa ✔ Web Scraping: BeautifulSoup, Scrapy, Selenium, Puppeteer ✔ CRM & Communication: HubSpot, Twilio, SendGrid, MailChimp ✔ UI/UX Tools: Figma, Adobe XD, Sketch, Photoshop ✔ Cloud & DevOps: AWS, Docker, Kubernetes, GitHub Actions, CI/CD, SaaS deployment & scaling ✔ Tools: Git, Jira, Trello, Postman — Why Choose Me? ✔ My priority is to truly understand each client’s challenges and deliver solutions that align with their goals. I focus not just on technologies, but on real problems and effective solutions. ✔ I work as an independent contractor, but if you need to accelerate development, design, testing, or deploy solutions, I collaborate with trusted professionals to deliver the full cycle of web application creation — from design and development to thorough testing and seamless deployment into production infrastructure. ✔ Flexible with time and location, I can adapt to your workflow or meet wherever needed to ensure smooth communication and project success. Let’s bring your ideas to life and build something amazing together! Thank you again, and I look forward to working with you! daha az
TomaK01
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albercuenca5 albercuenca5
30$ USD / saat
Software Engineer |Java |Spring boot |aws |dockerMozambiqueSoftware Engineer specializing in Java and backend development, focused on designing and delivering scalable, secure, and high-performance systems. I work extensively with Spring Boot, Spring Data JPA, Hibernate, and RESTful architectures to build reliable and maintainable backend platforms. My experience includes...Software Engineer specializing in Java and backend development, focused on designing and delivering scalable, secure, and high-performance systems. I work extensively with Spring Boot, Spring Data JPA, Hibernate, and RESTful architectures to build reliable and maintainable backend platforms. My experience includes working with distributed systems, leveraging Kafka, Redis, and Docker to create robust, fault-tolerant solutions. I also integrate cloud-ready patterns and AWS services to support efficient deployments and production-grade environments. I apply Clean Architecture, domain-driven principles, and strong engineering practices to ensure code quality, extensibility, and long-term maintainability. I’m skilled at diagnosing complex issues, optimizing performance, and elevating the reliability of backend systems. I’m driven by building high-quality products, improving developer experience, and contributing to architectures that scale intelligently and sustainably. ⚙️ Technical Abilities - Java (8–21+) - Spring Boot / Spring Web / Spring Data JPA - Hibernate - JUnit / Mockito - RESTful API design & documentation - PostgreSQL / MySQL - MongoDB - Redis (caching, rate limiting, session management) - Kafka (event-driven architectures) - Docker / Docker Compose - AWS (Lambda, API Gateway, ECS, S3) - CI/CD pipelines - Clean Architecture & SOLID principles - Git & GitHub 🛠️ Tools - IntelliJ IDEA - Maven / Gradle - Git & GitHub - Swagger / OpenAPI - Postman / Insomnia - Jenkins / GitHub Actions 🧩 Personal Qualities - Fast learner and highly adaptable - Strong analytical and problem-solving skills - Organized and detail-oriented - Effective communicator - Passionate about improving user experience - Open to giving and receiving constructive feedback - Committed to writing clean, testable, and reliable code daha az
albercuenca5
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