Java User Data API

@OutsourceMan

⭐⭐⭐⭐⭐ We at CnELIndia, led by Raman Ladhani, are well-positioned to deliver this project successfully. With extensive experience in Java 17, Spring Boot, and relational databases like PostgreSQL and MySQL, we have built secure, scalable APIs handling sensitive user data. Our approach will include designing a clear package structure, implementing JWT-based authentication with role-based authorization, and creating fully tested CRUD endpoints with pagination and search. We will generate OpenAPI/Swagger documentation automatically and containerize the application using Docker for seamless CI/CD deployment. Unit and integration tests will ensure ≥80% coverage, while OWASP best practices will guide dependency management and security checks. Database schemas and migration scripts will be version-controlled, and a concise README will provide build/run instructions, ensuring a robust, production-ready backend aligned with your specifications.

@ZohaibRoy

⭐⭐⭐⭐⭐ Build a Secure Java Backend with Well-Documented APIs ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and noticed you're looking for a Java backend developer. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for building secure APIs. I will create a robust backend using Java 17, Spring Boot, and a relational database like PostgreSQL or MySQL. I will ensure that every endpoint is secure and well-documented while providing additional value within your budget. ➡️ Why Me? I can easily build your Java backend with secure APIs as I have 5 years of experience in Java development, Spring Boot, and RESTful services. My expertise includes API design, database management, and security implementation. Additionally, I have a strong grip on Docker for containerization and CI/CD processes. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to discussing this with you in chat. ➡️ Skills & Experience: ✅ Java 17 ✅ Spring Boot ✅ RESTful API Development ✅ PostgreSQL ✅ MySQL ✅ JWT Authentication ✅ Swagger/OpenAPI ✅ Docker ✅ Unit Testing ✅ Integration Testing ✅ GitHub Actions ✅ API Security Waiting for your response! Best Regards, Zohaib

@mohjib092

Hi there, I’m excited about your project to build a secure, well-documented Java backend for user management. I have extensive experience with Java 17, Spring Boot, and relational databases like PostgreSQL and MySQL, and I’ve delivered several production-ready REST APIs that include CRUD operations, pagination, search, and JWT-based authentication. Here’s what I can deliver: Clean, modular Java/Spring Boot code with proper package structure REST APIs for user profiles, fully tested (unit & integration tests) Role-based authorization and JWT security Database schema & migration scripts ready for PostgreSQL/MySQL Swagger/OpenAPI 3.0 docs for easy integration and testing Docker-ready setup for seamless CI/CD deployment ≥80% test coverage and secure dependencies (OWASP Dependency-Check compliant) I focus on writing maintainable code, delivering on time, and ensuring your APIs are robust, secure, and easy to integrate. I’d be happy to provide examples of similar projects I’ve built if needed. Looking forward to collaborating and bringing this backend to life!

@DigitaSyndicate

You are not looking for a coder. You are looking for someone who can build this properly. That is exactly why your project stood out. Your plan to build a secure, scalable Java backend with Spring Boot and auto-generated OpenAPI documentation reflects a commitment to maintainable, enterprise-grade APIs that resonate with the robust architecture we prioritize at DigitaSyndicate. At DigitaSyndicate, a UK-based digital systems agency, we build precision-engineered automation, modern web platforms, and AI-driven systems designed for performance and long-term scalability. Our approach aligns perfectly with your need for a container-ready, well-tested backend featuring JWT authentication and comprehensive API coverage. Having delivered a similar user management API for a fintech client with over 90% test coverage and seamless CI/CD integration, I understand the demands your project entails. Can you share your main priorities and timeline so I can map out the right execution plan for you? Casper M. Project Lead | DigitaSyndicate Precision-Built Digital Systems.

@ParasTech7

I have 21 years of experince, Pricipal Software engineer and IIT grad, I have extensive experince with springboot and spring MVC, spring security and jwt, have built enterprise grade application for B2B chemical trading platform, I have built CI/CD pipeline, written JPQL custom quries and efficient data pipelines. I have understood your requirements and can deliver it.

@engmalaa

Hi there, I am able to lead the operations of CI/CD via plenty tools such as n8n, Docker Compose, and Nginx. Please let us have a meeting to explain the details. Regards, Mohammad Alaa

@iglobalvn

Hi, I’m a Java 17 / Spring Boot developer with strong experience building secure, production-grade REST APIs backed by PostgreSQL and MySQL. For your User Data API, I would: • Design a clean layered architecture (controller → service → repository) with DTO validation • Implement CRUD endpoints with pagination, filtering, and proper HTTP status handling • Secure the API using Spring Security with JWT and role-based access control • Provide Flyway/Liquibase migration scripts and optimized schema design • Auto-generate OpenAPI 3 docs (Swagger UI) • Deliver Dockerized setup ready for CI/CD • Ensure 80%+ test coverage (JUnit 5, Testcontainers, MockMvc) and OWASP-safe dependencies I’ve shipped similar authentication-driven APIs integrated into GitHub Actions pipelines and containerized for cloud deployment. Happy to discuss timeline and repo structure expectations.

@arbu1499

Hi, I’ve reviewed your project and understand you need a secure, well-documented Java backend for user management, with CRUD endpoints, JWT authentication, role-based access, and full OpenAPI/Swagger documentation. I have experience building production-ready Spring Boot APIs with PostgreSQL/MySQL, Dockerized deployments, unit/integration testing, and GitHub Actions CI/CD. I can deliver a clean, container-ready codebase with ≥80% test coverage, migration scripts, and a detailed README so your team can deploy confidently. Looking forward for your positive response in the chatbox. Best Regards, Arbaz T

@trm66614

Hi there, Good evening I am Talha. I have read you project details i saw you need help with Docker, Spring Boot, API Development, PostgreSQL, MySQL, Java, J2EE and JSP I am excited to submit my proposal for your project, which focuses on a comprehensive project plan. To begin, we will thoroughly understand your project's objectives and requirements, ensuring alignment on scope and goals. We will provide a clear and realistic project timeline with manageable milestones to ensure timely completion Please note that the initial bid is an estimate, and the final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please share any available detailed documentation? I'm also open to further discussions to explore specific aspects of the project. Thanks Regards. Talha Ramzan

@belotefreelancer

"I have gone through your description. "This is my area of specialization, i can get it done 100 % perfectly well. Please ping me in person. I can help you to complete all tasks. I have hands-on experience in this field. We have already done similar types of projects. Connect with us for more details. Rest assured your satisfaction is guaranteed." Looking forward to your response." Thank you for your time and I am confident that we will be a great fit for this project. Best,

@albertc1996

Hello, Delivering secure, reliable, and maintainable APIs is critical for any user-focused service, and this project aligns perfectly with that goal. I specialize in building Java backend systems with Spring Boot that are robust, well-tested, and ready for enterprise deployment. For your requirements, here’s how I would approach it: Backend Development: Implement CRUD endpoints for user profiles with pagination, search, and proper validation. Security & Auth: JWT-based authentication and role-based authorization to protect all endpoints. Database & Migrations: PostgreSQL/MySQL schema design with migration scripts to ensure data integrity and versioning. Documentation & Testing: Auto-generated Swagger/OpenAPI docs, unit & integration tests targeting ≥80% coverage, and CI/CD-ready Docker setup. Quality & Compliance: Strict adherence to clean code practices and OWASP standards to avoid vulnerabilities. The result will be a fully functional, secure, and containerized Java backend that integrates seamlessly into your CI/CD pipeline and is ready for production. I have extensive experience delivering similar Spring Boot API projects, ensuring both performance and maintainability, and I’d be glad to bring that expertise to your project.

@billybryan98

Hello, I hope you are doing well. I’m a Java backend developer who builds robust Spring Boot services with secure REST APIs, clean architecture, and clear documentation. I focus on delivering scalable, maintainable code with strong typing, automated tests, and smooth CI/CD integration. I’ve shipped similar user-data APIs: CRUD operations with pagination and search, JWT-based authentication and role-based access control, OpenAPI/Swagger specs auto-generated, and Docker-ready configs for seamless deployment. I’ve worked with PostgreSQL/MySQL, wrote database schemas and migration scripts, and ensured test coverage meets enterprise standards. I can handle the full stack, API endpoints, security, data validation, tests, docs, and Dockerization, delivering a reliable, well-tested service that meets your acceptance criteria. Please feel free to contact me so we can discuss more details. I am looking forward to the chance of working together. Best regards, Billy Bryan

@xuezhe315

Hello, With a specialization in API development and an unwavering devotion to delivering robust and secure solutions, I believe I am uniquely equipped to handle your Java User Data API project. My extensive experience in developing APIs -- REST, GraphQL, real-time -- aligns precisely with the demands of this project. I have built numerous Java-based APIs using Spring Boot framework and have substantial knowledge of relational databases such as PostgreSQL and MySQL. Moreover, I have successfully completed several projects involving JWT-based authentication and role-based authorization, ensuring your APIs are resilient against security threats. Project deliverables like clear package structure, precise unit & integration tests and Docker-compatibility pose no challenge to me. I have practiced clean code writing style throughout my 50+ full-scale projects and integrated them smoothly with CI/CD pipelines. I am confident in my ability to meet and exceed your expectations from this Java API project. Choosing me would mean selecting an experienced hand that always keeps your business objectives at the forefront! Best Regards.

@harfarooqi

Hi I have seen your job description and interested in this project. It would be good if we can discuss further Best

@sasaprogramer21

I can build this Java 17 Spring Boot service as a clean, container ready API with strong validation, JWT auth, RBAC, and OpenAPI first documentation. I have shipped similar user profile and identity adjacent services in Spring Boot with PostgreSQL or MySQL, Flyway migrations, structured error handling, and CI enforced test coverage. Implementation approach Spring Boot 3 with layered packages controller service repository and a clear domain model. JWT authentication with role based authorization at the endpoint and service layer. CRUD endpoints with pagination, filtering, and search using Spring Data. OpenAPI 3 auto generation with consistent request and response schemas and documented error codes. Flyway or Liquibase for DDL and migrations. Dockerfile plus compose for local run, and GitHub Actions workflow for build, tests, coverage, and OWASP Dependency Check. Deliverables you will receive Source code with unit and integration tests using Testcontainers for database backed tests. Documented REST endpoints for create read update delete plus search and pagination. JWT and RBAC implemented and verified in tests. Migration scripts and schema. Swagger UI and OpenAPI spec plus a concise README. Estimated timeline 1 to 2 weeks for an MVP quality delivery, with an additional week if you want more roles, advanced search, and stricter security hardening.

@anshumanvermaUK

Hi I have hands-on experience building secure REST APIs using Java 17 and Spring Boot with JWT authentication, role-based authorization, pagination, and search. I can deliver a modular, Docker-ready backend with OpenAPI documentation, migration scripts, and strong unit/integration test coverage aligned with CI/CD best practices. The code will follow clean architecture and OWASP-compliant standards. Thanks Anshuman

@vishal1145

Your JWT implementation will fail security audits if you're storing tokens without refresh rotation and blacklist management. Most teams skip this until they hit production and realize compromised tokens stay valid for hours. Before architecting the solution, I need clarity on two things: What's your expected concurrent user load - are we talking 100 or 10,000 simultaneous requests? And does your compliance framework require audit logging for every data mutation (GDPR Article 30 or similar)? Here's the architectural approach: - SPRING BOOT + JAVA 17: Build a layered architecture with service abstractions and DTOs to keep your domain logic testable and database-agnostic. I'll use record classes for immutable data transfer. - JWT + ROLE-BASED AUTH: Implement token refresh flows with Redis-backed blacklisting so you can revoke access instantly. I'll add method-level security annotations to prevent privilege escalation. - POSTGRESQL + FLYWAY: Design normalized schemas with proper indexing on search fields (email, username) and set up versioned migrations so your CI/CD never breaks on schema drift. - DOCKER + TESTCONTAINERS: Create multi-stage builds that keep your image under 200MB and write integration tests against real Postgres containers - no mocked repositories that hide production bugs. - OPENAPI 3.0: Auto-generate docs from annotations and include example payloads so your frontend team doesn't waste time guessing response structures. I've built 8 Spring Boot APIs in the last 3 years that passed SOC2 audits and handled 50K+ daily active users. I don't take on projects where the security model is an afterthought. Let's schedule a 20-minute call to discuss your authorization rules and data retention policies before I commit to a timeline.

@mauriciom46

Hello, I’ve carefully reviewed your Spring Boot API requirements. I previously delivered Java 17 REST backends with CRUD, pagination/search, JWT authentication, RBAC, PostgreSQL, Flyway migrations, 80%+ test coverage, Swagger/OpenAPI 3, Dockerized builds, and CI pipelines passing OWASP Dependency-Check. Your need for secure, validated endpoints, clean package structure, container-ready deployment, and documented APIs will be addressed using Spring Security, JPA, DTO validation, integration tests, and GitHub Actions workflows. I’m ready to begin immediately and committed to delivering a high-quality, production-ready API quickly. Best regards, Mauricio

@abhayk49

Hi, I’d be glad to build your secure Java backend using Java 17 + Spring Boot. I have strong experience delivering production-grade REST APIs with authentication, validation, documentation, and CI/CD readiness. Here’s what I will deliver: ✔ Clean package structure (Controller–Service–Repository pattern) ✔ CRUD REST endpoints with pagination and search ✔ JWT-based authentication with role-based authorization (Spring Security) ✔ Input validation, global exception handling, and proper HTTP status mapping ✔ PostgreSQL/MySQL schema with migration scripts (Flyway/Liquibase) ✔ Auto-generated Swagger/OpenAPI 3 documentation ✔ Dockerized application ready for CI/CD ✔ Unit + integration tests with ≥80% coverage I have previously built similar Spring Boot APIs with secure authentication, search/filtering, and containerized deployments integrated with GitHub Actions pipelines. The code will be: Clean and maintainable OWASP-aware (Dependency-Check compliant) Fully aligned with the OpenAPI specification Ready to clone and run on a fresh environment I’m confident I can deliver a robust, secure, and production-ready backend that meets all acceptance criteria. Looking forward to discussing timelines and next steps. Best regards, Abhay Kumar