Hire the Best Core Java Developers
in Pakistan

Transforming Ideas into Scalable Digital Solutions As a Full Stack Developer & Solution Architect, I specialize in designing and delivering high-performance, secure, and scalable web applications tailored to business needs. From concept to deployment, I focus on clean architecture, efficiency, and long-term maintainability. Core Expertise Backend Development Java, Spring Boot, Microservices Architecture, Hibernate Python for automation, integrations, and data processing REST APIs, system integrations, and performance optimization Database design & tuning (MySQL, PostgreSQL, MongoDB) Frontend Development Modern UI development with ReactJS & Angular Responsive design using HTML5, CSS3, Bootstrap Advanced UI libraries: PrimeReact, PrimeAngular, Ant Design AI & Intelligent Integrations Integration with Claude AI and modern LLMs for smart automation AI-powered features like chatbots, content generation, and workflow enhancement DevOps & Tools Docker, CI/CD pipelines, Git (GitHub, GitLab) Cloud-ready solutions with scalable deployment strategies What You Can Expect Clean, production-ready code Scalable and future-proof architecture Strong focus on performance, security, and reliability Clear communication and on-time delivery Let’s build powerful, intelligent, and scalable solutions that drive real business impact. 🚀

Oracle Certified Professional Java Developer, Spring Boot developer, Full stack developer & solutions provider. Are you looking for all-inclusive, reliable microservices and responsive web app development? Or a full-stack developer who fully understands and fulfills your unique requirements with custom solutions? Do you have time or other constraints that prevent you from hiring full-time, in-house specialists for your project? Don’t worry! You’ve found the right person. I am Salman, a Full-Stack Microservices and Responsive Web developer with over 12 years of developing, implementing, and maintaining high-quality & customized backend and web-based software solutions across various industry sectors. I’m always willing to go above and beyond and make myself available, to answer queries, provide quick fixes or status updates, and meet tight deadlines. I have experience with: ✅ Java, Java Core, Java EE ✅ Spring Boot, Spring MVC ✅ Spring Boot Data, Spring JPA Data ✅ Spring Security ✅ Apache Struts ✅ Microservices ✅ RestAPI / Restful API Development ✅ OpenAPI/Swagger, Postman ✅ API Integration ✅ JPA, Hibernate ORM ✅ Java Concurrency ✅ Relational Database (RDBMS): MySQL, MSSQL Server, PostgreSQL, IBM DB2 ✅NoSQL Databases: MongoDB, AWS Dynamo DB ✅ Container Orchestration: Kubernetes, Helm Chart ✅ DevOps Skills: CI/CD, Kubernetes, Helm charts, Docker, Github Actions, GitHub, Ansible ✅Cloud Experience: GCP, AWS, AWS SDK ✅ JSP / Java Server Pages ✅ JSF / Java Server Faces / Jakarta Server Faces ✅ Thymleaf ✅ React JS, Bootstrap, Material CSS, HTML, CSS, Javascript, JQuery 🌟 WHY CHOOSE ME OVER OTHER FREELANCERS? 🌟 ✅ Quality-Oriented: I focus on providing VALUE to all of my Clients and Earning their TRUST. Delivering with quality is the key to gaining trust, and that's where I put my core focus. ✅ Over-Delivering: This is core to my work as a Freelancer. My focus is on GIVING more than what I expect to RECEIVE. I take pride in leaving all of my Clients saying "WOW." ✅ Adaptive to changes: During Software Development Lifecycle, it is highly likely some changes might be needed. I understand this and open to any changes. The end goal is to make my client achieve his target, and the objective is to make his/her business more profitable. ✅ Responsiveness: Being extremely responsive and keeping all lines of communication readily open with my Clients. ✅ Respect: Self-respect is everyone's right. I belong and thrive in a work culture where everyone's self-respect is of utmost importance. Maintaining relations with my clients to boost their self-respect is one of the core offerings that I can offer here. Have any questions? Want to discuss your project? Or do you want to get advice? Drop me a message, and we will have a quick call to understand your requirements so that to help you 100% according to your desires :)

🏆 Top Rated Plus | 14,000+ Hours | 100% Job Success Score | 5★ Feedback 💼 12+ years of Experience | Java · Spring Boot · AWS · DevOps · AI Integration 🚀 FinTech · Banking · Enterprise SaaS · Cloud-Native Systems Over the past 12+ years I have been building production-grade Java backends, scalable cloud infrastructure, and enterprise systems for FinTech, banking, healthcare, and SaaS businesses. Over the last two years I have been helping businesses integrate Generative AI, LLMs, RAG pipelines, and AI workflow automation into production backend systems. I specialize in Java, Spring Boot, Microservices, AWS, PostgreSQL, MongoDB, Docker, Kubernetes, and AI integrations using Claude API, OpenAI, and LangChain - helping companies build reliable, scalable, and production-ready systems that go beyond demos and actually work under real load. 𝐖𝐡𝐚𝐭 𝐈 𝐒𝐡𝐢𝐩 ✔ Production-grade Java backends: Spring Boot, Spring Security, microservices, event-driven systems ✔ Scalable cloud infrastructure: AWS (EC2, ECS/EKS, RDS, Lambda), Kubernetes, zero-downtime deployments ✔ End-to-end DevOps: CI/CD pipelines, Terraform IaC, Docker containerization, GitOps ✔ AI-powered backend features: LLM integrations, RAG pipelines, AI agents, workflow automation ✔ Database design and optimization: PostgreSQL, MySQL, MongoDB, Redis, caching strategies ✔ Full-stack delivery: React/Vue3 frontend integration, REST API design, OAuth2/JWT security 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝟭. 𝐉𝐚𝐯𝐚 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Java 17/21, Spring Boot, Spring Security, Spring Cloud, Spring MVC, Hibernate, Quarkus Microservices architecture, event-driven systems (Kafka, RabbitMQ), REST APIs JWT/OAuth2/RBAC security, API Gateway design, multi-tenant SaaS architecture Legacy modernization, Java 8 → 17/21 migrations, codebase refactoring 𝟮. 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬 AWS (EC2, ECS/EKS, RDS, S3, Lambda, IAM, CloudWatch, Route53, ALB) Kubernetes, Helm, ArgoCD - cluster management, autoscaling, zero-downtime deployments Docker, multi-stage builds, container registry management Terraform, CloudFormation - Infrastructure as Code CI/CD: GitHub Actions, Jenkins, GitLab CI/CD, Azure DevOps 𝟯. 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 & 𝐃𝐚𝐭𝐚 PostgreSQL, MySQL, Oracle, MongoDB, Redis Advanced query optimization, schema design, replication, caching strategies JPA/Hibernate ORM, connection pool tuning, performance tuning under production load 𝟰. 𝐀𝐈 & 𝐆𝐞𝐧𝐞𝐫𝐚𝐭𝐢𝐯𝐞 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 ✔ LLM API Integration -- Anthropic Claude, OpenAI for production backend features ✔ RAG (Retrieval-Augmented Generation) pipelines -- document intelligence, intelligent search ✔ LangChain -- AI-driven workflow automation and conversational backends ✔ AI Agents & Agentic Workflows ✔ AI Chatbot Development ✔ Prompt Engineering & LLM Optimization ✔ n8n Workflow Automation -- connecting AI services and business systems ✔ AI-assisted development -- Cursor AI, Claude Code, GitHub Copilot daily workflow 𝟱. 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐂𝐨𝐦𝐩𝐥𝐢𝐚𝐧𝐜𝐞 Spring Security, OAuth2, JWT, RBAC across regulated FinTech and healthcare environments HIPAA-compliant system design, secure API architecture, data encryption Audit logging, access control, compliance-grade transaction handling 𝟲. 𝐌𝐨𝐛𝐢𝐥𝐞 & 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 Android development — Java, Kotlin, Android SDK React, Vue3 frontend integration for full-stack delivery 𝐒𝐞𝐜𝐭𝐨𝐫𝐬 𝐈'𝐯𝐞 𝐁𝐮𝐢𝐥𝐭 𝐅𝐨𝐫 • FinTech & Banking: Core banking systems, payment platforms, lending administration, regulatory compliance • Healthcare: HIPAA-compliant microservices, healthcare platform modernization • E-Commerce: Scalable backends, payment gateway integration, inventory systems • Enterprise SaaS: Multi-tenant platforms, workflow automation, API-first architecture • AI Products: RAG systems, LLM-powered backends, intelligent automation pipelines 𝐖𝐡𝐚𝐭 𝐈'𝐯𝐞 𝐁𝐮𝐢𝐥𝐭 • Royal Caribbean International -- Java, Spring Boot, PostgreSQL, RESTful APIs at enterprise scale • FOCUS (National Banking Platform) -- Hibernate, Spring MVC, JasperReports, nationwide loan administration • KredX -- multi-tenant financial trading platform, approval workflows, asset classes • GAP -- e-commerce backend, React, MySQL, Redis, payment gateway integration 𝐑𝐞𝐜𝐞𝐧𝐭 𝐄𝐧𝐠𝐚𝐠𝐞𝐦𝐞𝐧𝐭𝐬 • AI/ML Infrastructure (Active) -- GPU workloads, MLOps pipelines, AWS, real-time AI deployment • Event-Driven Banking Platform ⭐ 5.0 -- Java, Quarkus, async event processing, production FinTech • Java 8 → 11 Migration ⭐ 5.0 -- legacy modernization, long-term enterprise engagement 🚀 Whether you need a Senior Java engineer, a DevOps partner, or someone who can integrate AI into your backend and keep it running in production -- I'm the one who covers all three. 📩 Send me a message. Let's build it right.

Full Stack Java Engineer with 5+ years of experience building scalable, production-grade systems for logistics, food delivery, and enterprise platforms. I specialize in Spring Boot microservices architecture and AI-powered backend systems — designing end-to-end solutions that handle high traffic, complex workflows, and real-time data processing. My background in logistics technology means I understand not just the code, but the business operations behind it. What I bring to your project: - AI integration using OpenAI, Gemini, and LangChain4j for intelligent automation and chatbot backends - Microservices architecture with Spring Boot and Spring Cloud - Event-driven systems using Apache Kafka and RabbitMQ - Full stack development with React.js and Vue.js frontends - REST API design, development, and third-party integrations - AWS infrastructure — EC2, RDS, S3, deployment pipelines - Database design and optimization across MySQL, PostgreSQL, and Oracle - JWT-based authentication and Spring Security - Legacy system migrations and monolith-to-microservices transitions - Docker, CI/CD pipelines, and production deployment I have built and maintained systems processing hundreds of thousands of records daily — including a 2.5-year long-term engagement delivering a full-stack logistics and food delivery platform on AWS, earning a 5.0 rating across every review. I do not disappear after handing over code. I ask the right questions before starting, communicate clearly throughout, and flag issues before they become problems. Clients who work with me once tend to come back. 100% Job Success Score across every contract on Upwork. If you need a reliable full-stack engineer who builds intelligent, scalable systems — let's talk.

Core Expertise (Bullet Points): Backend: Java, Spring Boot, Microservices, RESTful APIs, SQL/NoSQL Frontend: JavaScript, TypeScript, React, HTML5/CSS3 DevOps/Tools: Docker, AWS, Git, CI/CD I’m experienced in Java , Web Scrapping , Databases , Spring Boot , Mobile App Development , Java GUI , HTML and CSS 3,jQuery, WordPress and SEO , React JS , Angular JS , Rest API , JPA , Hibernate , Lombok , JSON , Shopify Custom Apps and Products Uploading , Etsy API Integration , oAuth 2.0 and more. I’ll fully project manage your brief from start to finish Regular communication is really important to me, so let’s keep in touch!”

I am a highly skilled Java software developer with over two years of experience, specializing in building scalable and efficient applications using Java and the Spring Framework. I am passionate about leveraging cutting-edge technologies to deliver high-quality solutions that drive business success. Core Expertise: Java Development: Proficient in Java with extensive experience in Spring Framework, Hibernate, J2EE, and MySQL. Full-Stack Development: Strong experience with frontend technologies like JavaScript and ReactJS. DevOps & Cloud: Familiar with Git, Docker, and Cloud Build. Extensive knowledge of AWS and infrastructure as code (IaC) practices. Agile Methodologies: Adept at working in agile environments, following Scrum methodologies to deliver projects efficiently. Continuous Learning: Actively expanding my skill set, including modern frontend frameworks like Vue.js. Accomplishments: In my previous role, I led initiatives that improved customer satisfaction by 13% and application performance by 20%. I am passionate about innovation and data-driven solutions, particularly in the energy trading sector. What I Offer: I am committed to delivering exceptional results through open communication, transparency, and collaboration. I thrive on taking on challenging projects and leveraging my diverse skill set to exceed expectations.