Rizwan A.

As a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐉𝐚𝐯𝐚 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 & Enterprise Solutions Architect with over 𝟏𝟓+ years of experience, I specialize in designing and building scalable, secure, and high-performance 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 for complex domains. I’ve successfully modernized monolithic legacy systems into modular, microservice-based architectures, developed enterprise-grade APIs, and delivered Java-powered backend platforms that improve reliability, performance, and business outcomes. 𝐊𝐞𝐲 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 🔧𝐁𝐚𝐜𝐤-𝐄𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Proficient in Java (J2SE, J2EE, J2ME), Spring Boot, Hibernate, and JPA, building clean and modular backends with REST APIs and microservice-based architectures. 🌐 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 (𝗠𝗘𝗥𝗡 & 𝗠𝗼𝗱𝗲𝗿𝗻 𝗪𝗲𝗯) Experienced in developing full-stack applications using MongoDB, Express.js, React.js, and Node.js. Capable of building responsive UIs, integrating APIs, and delivering complete end-to-end web solutions. 🔗𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧: Proficient in integrating Oracle BRM, Salesforce, Microsoft Dynamics, and OSS/BSS systems to build scalable enterprise ecosystems. Act as a Subject Matter Expert (SME) in business object mapping, aligning CRM structures with real-world business domains. Experienced in driving automation through RPA for streamlined operations. 🚀𝐃𝐞𝐯𝐎𝐩𝐬 & 𝐂𝐈/𝐂𝐃: Skilled in setting up CI/CD pipelines using Git, Bitbucket, Bamboo, Jenkins, and Docker to streamline deployments and improve delivery efficiency. 🔐𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐒𝐒𝐎: Experience implementing secure authentication mechanisms using OAuth2, JWT, and enterprise-grade Single Sign-On (SSO) across distributed systems. 🖥️𝐒𝐞𝐫𝐯𝐞𝐫𝐬: Worked extensively with Apache Tomcat, JBoss (4,5, 7), WildFly (4, 7, 13), Glassfish server v3, BES, VMWare 17, Apache tomcat, Jettyserver and JSF with RichFaces for UI-driven enterprise solutions. 🖥️ 𝐎𝐩𝐞𝐫𝐚𝐭𝐢𝐧𝐠 𝐒𝐲𝐬𝐭𝐞𝐦𝐬: Microsoft Windows XP, Windows 7, window 10, Red Hat Enterprise 4.0, Knoppix 5.1, BackTrack 4, Linux, Ubuntu 22 LTS 🛠️ 𝐓𝐨𝐨𝐥𝐬: Bitbucket, Git, Vs code Jira, pipline, hipchat and Confluence, Scrum/Agile development methodologies, Netbeans 6.1 & 6.9 and Eclipse IDE, Metlab, MS-Visual Studio, MS Office 2007, Ms Visio, Jasper reports 🗃️𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 & 𝐒𝐲𝐬𝐭𝐞𝐦𝐬: Oracle 9i, 13g, 14g, SQL Server 5.0 2017, PostgreSQL 7, MySQL 8, MS Access, Oracle BRM, EBSData (Financial Reporting) Holistics, MySQL Workbench 5.0 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞: 🔹 Strategic Alignment: I design solutions that align with business goals, not just technical requirements. 🔹 Proven Track Record of Excellence: Experience working across domains like telecom, fintech, healthcare, and SaaS systems. 🔹 Architectural Precision: Focus on building future-proof, maintainable, and high-performance systems. 🔹 Executive-Level Communication: I maintain transparent, articulate, and timely communication throughout the project lifecycle. 🔹 Operational Excellence: My solutions are engineered for performance, resilience, and sustainability, enabling businesses to scale with confidence and efficiency. 📚 𝐁𝐨𝐨𝐤𝐬 & 𝐏𝐮𝐛𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 Voice Vox: Published by Lambert Academic Publishing (ISBN: 978-3-659-30294-7) Mobile Call Establishment using SIP Without GSM Charges is a technical guide on implementing a complete VoIP client using SIP and Asterisk PBX, this book explores how to build telecom applications across all OSI layers, including SIP, RTP, SDP, UDP, and more , empowering developers to create cost-efficient, real-time voice communication systems. 🤝 𝐋𝐞𝐭'𝐬 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐞: If you're looking for a results-driven Java Developer who understands enterprise systems and builds scalable, secure, and modern backend platforms, let's connect and bring your vision to life.