Spring Boot 3.5 to 4.0 Migration and AWS CDK Development

@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,

@gauravl3

As a full-stack developer with deep experience in both Spring Boot and AWS, I am confident that I can effectively handle your project. Having successfully migrated numerous Spring Boot applications across versions, including the latest 3.x to 4.0, I am aware of the potential compatibility issues and deprecated APIs that may arise. This prepares me to tackle them speedily and ensure a smooth transition while minimizing disruption. My knowledge of AWS CDK with TypeScript will be invaluable in updating and refining your AWS infrastructure. I can confidently create or modify required AWS resources and deployment pipelines for you while complying with infrastructure-as-code best practices to ensure security, reliability, and scalability. Additionally, my proficiency in major AWS services like EC2, Lambda, ECS/EKS (if applicable), S3, RDS, IAM, DynamoDB, CloudWatch, API Gateway, SQS/SNS/EventBridge makes me seasoned at mitigating problems even before they arise. Throughout my career, I have fully embraced CI/CD pipelines and Git version control as effective tools for managing code changes thereby ensuring project success. My hands-on experience in containerization(Docker) will come into play as well. All these combined with my ability to work independently and provide detailed migration recommendations make me an ideal choice for this project. So why not partner with me today to ensure a successful migration while maintaining stability?

@juan99lizano

You need a Spring Boot 3.5 → 4.0 migration plus AWS CDK (TypeScript) infrastructure updates — and you need someone who can handle both sides without handholding. I recently migrated a microservices platform from Spring Boot 2.7 → 3.x, resolving Spring Security filter chain breaking changes, Jakarta EE namespace migrations, and Hibernate 6 compatibility issues — zero downtime post-deployment. I also maintain AWS CDK TypeScript stacks covering ECS, RDS, API Gateway, SQS/SNS, and CloudWatch alarms. I can deliver: full dependency audit + migration plan (Day 1), code refactoring + CDK stack updates (Days 2–4), testing/validation + migration documentation (Day 5). Realistic 5–7 day timeline depending on codebase size. Note: Spring Boot 4.0 isn't GA yet — are you targeting the current milestone releases, or is your timeline flexible pending the stable release?

@swagatikam22

Hi, I am interested in supporting your Spring Boot migration project. I have experience working with Java, Spring-based enterprise applications, backend debugging, APIs, and maintenance/enhancement activities in enterprise environments. I have around 3.5 years of experience working in banking domain projects involving legacy systems and existing enterprise codebases. I have also previously worked on migration activities, including migration from Java 7 to Java 17, which involved resolving compatibility issues, dependency updates, and handling existing application flows. Even in my current role at GS, I continue to work with enterprise applications and legacy workflows. I am comfortable understanding existing codebases, troubleshooting issues, and supporting migration-related changes and testing activities. While my primary expertise is on the Java and application side, I am a quick learner and can collaborate effectively on deployment and integration-related tasks as needed. I am available to start immediately and would be happy to discuss the project further. Looking forward to connecting with you.

@Pinky34

Hello, I’m a Java Full Stack Developer with 8+ years of experience building and modernizing enterprise applications using Spring Boot, microservices, REST APIs, cloud services, and CI/CD pipelines. I have hands-on experience with backend upgrades, dependency management, deployment troubleshooting, and cloud-based architectures. For this project, I can support the complete Spring Boot 3.5 → 4.0 migration process including dependency upgrades, resolving deprecated APIs, compatibility fixes, code refactoring, build/runtime issue resolution, testing, and deployment validation. My expertise includes: ✔ Spring Boot, Spring Security, Spring Data, REST APIs ✔ Maven/Gradle dependency management and migration handling ✔ Microservices architecture and enterprise backend development ✔ AWS services: EC2, Lambda, S3, RDS, DynamoDB, IAM, CloudWatch, API Gateway, SQS, SNS, EventBridge ✔ AWS CDK (TypeScript) infrastructure updates and IaC practices ✔ CI/CD pipelines, Git workflows, Docker, and deployment support I can independently analyze the current application, plan the migration path, update infrastructure code, troubleshoot issues, validate stability/performance, and document all migration changes to ensure a smooth transition with minimal risk. Looking forward to discussing the architecture and migration scope. Priyanshi Parashar Java Full Stack Developer | Spring Boot | AWS | Microservices

@bhagwatij

Hi there, Looked through the job spec. The technology stack aligns with my skillsets apart from setting up the infrastructure with CDK(That should not be a problem and i can adapt easily to changing technology) It would be a value addition to your team to use my knowledge. If you would like to discuss this further let us talk. Thanks, b

@guptakishan805

With my extensive experience in deploying next-gen software systems, I am confident that I have what it takes to handle your Spring boot migration from version 3.5 to 4.0 and AWS CDK development project impeccably. My familiarity with the Spring Boot ecosystem (including Spring Security, Data, REST APIs, and Maven/Gradle) positions me expertly to analyze your existing setup, plan the migration strategically while ensuring compatibility without sacrificing stability or performance. More so, my know-how in using AWS CDK with TypeScript is extensive and spans across several components like EC2, Lambda, ECS/EKS, S3, RDS, IAM, DynamoDB, CloudWatch among others. My experience in moving applications between environments coupled with deep comprehension of CI/CD pipelines will be vital to your project success. Besides technical skills,knowledge of security strim_outputs=optimized and uptime optimization is a significant advantage: aspects that are non-negotiables in enterprise application migrations. To further substantiate my candidature; as a freelancer who emphasizes long-term collaboration over just one-off engagements,I'll not only ensure the successful delivery of this project but also help lay a solid foundation for future system evolutions and maintenance. My goal isn't just to provide you code or fix bugs; instead it is to partner with you on every step of the journey toward a reliable, scalable and secure SaaS application

@nabeeli18

We’ve worked on a project with a very similar scope, giving me strong insight into delivering quality results efficiently. I understand the importance of a clean user-friendly UI for high-end customers. I'd love to chat about your project and walk away with a free consultation. Regards, Nabeel Ismail

@ghanashyams

Hi, I'm a Java full-stack developer specializing in fintech with hands-on experience in Spring Boot, AWS, and CI/CD pipelines. I've built and delivered production banking and trading applications using Java, Spring Boot, Spring Security, Spring Data, PostgreSQL, MongoDB, and Jenkins with AWS services including EC2, S3, RDS, Lambda. For this project, I'll: - Audit the codebase and plan the Spring Boot 3.5 → 4.0 migration and check related dependency changes - Resolve breaking changes, deprecated APIs, and dependency upgrades - Review and update AWS CDK (TypeScript) stacks and deployment pipelines - Test thoroughly and document all changes I'm available to start immediately and can work independently. Happy to connect for a quick discussion. Best regards, Ghanashyam Sangani

@Smritii04

I’m a final year Information Technology engineering student with strong hands-on experience in Java, Spring Boot, microservices, REST APIs, Docker, CI/CD, Redis, Kafka, and backend system development. I have built multiple production-style backend projects using Spring Boot and distributed system concepts, including ride-booking and real-time communication platforms. Although I am a fresher in freelancing, I am highly motivated and ready to dedicate serious effort to this migration and AWS infrastructure work. I have good understanding of: Spring Boot ecosystem (Spring Data JPA, Security, REST APIs) Maven/Gradle dependency management Microservices architecture Docker and deployment workflows CI/CD concepts Git-based development I am also comfortable learning and working with AWS CDK (TypeScript) and AWS services as required for the project. I can assist in: Dependency upgrades Fixing deprecated APIs and compatibility issues Refactoring and debugging Spring Boot code Testing and validation after migration Supporting deployment and infrastructure updates What makes me a strong candidate is my willingness to learn quickly, communicate properly, and work sincerely within your budget. Since this is one of my first freelance projects, my focus is on delivering quality work and building long-term professional relationships. I am available to start immediately and can work dedicated hours weekly. Looking forward to discussing the project further.

@hemant177

Hey You can give me this project because I already done that type of project in my banking system their onhave been migrated java 11 to java 21 the project is working correctly as per expectation we update version and do some agent like in java 11 we use javax so we replace this to jakarta and also update spring boot maven version to 3.5.14 like this changes i already made one agent for this migration so please let me know if you want we can schedule one meet and i can give you demo so let me know what is your requirement and availability I give my WhatsApp number check once 9172010257

@Foraxis

⭐ I handled a similar project ⭐, Happy to show you what works before you commit. I successfully completed a Spring Boot 3.5 to 4.0 migration and AWS CDK development project. The project I delivered perfectly aligns with your requirements for migrating a backend application and updating AWS infrastructure using AWS CDK with TypeScript. My expertise includes Spring Boot, AWS CDK, and I understand the complexities of such migrations and infrastructure updates. Specializing in performance, security, and a seamless user experience, my focus ensures successful project outcomes. I invite you to chat for a free consultation. Worst case, you walk away with a free consultation and a clearer understanding of your project. Kind regards, Curtley

@AtharvaITS01

We have strong experience with Java, Spring Boot, Spring Security, Spring Data, REST APIs, Docker, CI/CD, and AWS-based deployments. This project aligns well with our enterprise modernization background. We can support: 01. Spring Boot 3.5 → 4.0 migration 02. Dependency upgrades and breaking-change resolution 03. Refactoring for compatibility and stability 04. AWS infrastructure updates 05. CI/CD and deployment troubleshooting 06. Post-migration validation and testing Our primary focus would be minimizing runtime regressions while ensuring deployment stability throughout the migration process.

@KrushilKapupara

Hi, I’m a Java/Spring Boot developer with experience working in an ERP development company, where I’ve worked on backend modules, REST APIs, database handling, and production-level business applications. I have hands-on experience with Spring Boot, Spring Security, Spring Data, Maven, Docker, Git, and microservice-based architecture. I’m comfortable working on version upgrades, fixing dependency issues, and maintaining application stability during migrations. I can help with: Spring Boot 3.5 to 4.0 migration Resolving deprecated APIs and compatibility issues REST API and backend refactoring CI/CD and deployment support AWS service integration and infrastructure updates I’m a quick learner and can adapt fast to existing codebases and workflows. I focus on clean code, proper testing, and smooth deployment to avoid downtime after migration. Would be happy to discuss the current architecture and start working on the migration plan. Thanks, Krushil Kapupara

@prafulp003

Hello, I am a Java Developer with hands-on experience in Java, Spring Boot, Spring MVC, REST APIs, backend development, and database integration. I have worked on building scalable applications using clean architecture, CRUD operations, API development, and Maven-based projects. I am highly interested in supporting your Spring Boot migration and backend modernization effort. I have strong understanding of the Spring ecosystem including Spring Data, REST APIs, dependency management, debugging, and application maintenance. I am comfortable analyzing existing codebases, resolving compatibility issues, and refactoring code for maintainability and performance. Additionally, I am familiar with Git, CI/CD concepts, Linux environments, and cloud-based deployment workflows, and I am eager to contribute while quickly adapting to project requirements involving AWS and infrastructure updates. ✅ Skills: • Java, J2EE, Spring Boot, Spring MVC • REST APIs, Spring Data, Maven • Backend Development & Debugging • PostgreSQL/SQL Databases • Git Version Control, CI/CD Concepts • Clean, modular, maintainable code practices I am committed to delivering quality work, clear communication, and reliable support throughout the migration process. I would be happy to discuss your requirements and understand the existing system in more detail. Looking forward to hearing from you. Best Regards, Praful

@medha30

I have done 300+ migrations of this sort, and can deliver faster results, industry experience for this in production environment.

@droy0

I did the multiple migration project in my career, current working as senior architect in MNC and having 15+ relevant experience for java AWS , spring various version

@udaysharmau0i12

Hi, I am a Java Backend Developer with 4+ years of experience in Spring Boot, REST APIs, Spring Security, Spring Data JPA, Maven, Docker, CI/CD, Git, and AWS services. I have experience upgrading Java/Spring applications, resolving dependency and compatibility issues, and ensuring smooth deployments. I can assist with the Spring Boot migration, testing, troubleshooting, and infrastructure updates. Before proceeding, could you please clarify: - What is the current Spring Boot version and Java version being used? - Approximately how many microservices/applications are involved in the migration? - Are there any existing AWS CDK stacks that need modification, or will new infrastructure components be created as part of this effort? I look forward to discussing the project further. Thanks, Uday Sharma