Java Backend Feature Development

@AwaisChaudhry

Hello, I will round out your Java 17 backend by building the missing service layer, refining any brittle areas, and wiring everything into your existing Maven build, in-memory DB, and JUnit tests so the code compiles and passes the current suite. I’ll deliver new or updated Java classes implementing the backend features, accompanying unit tests with meaningful assertions, and a concise README explaining build steps and the new endpoints or public methods. I’ll follow your project’s formatting conventions, keep changes focused and well documented, and ensure the feature integrates smoothly with the existing codebase without regressing coverage. What are the top edge cases and payloads for the new backend feature, and can you share example request/response payloads and any external integration details to ensure correct wiring into the current codebase? Best regards,

@shrec

I can step into your existing Java 17 codebase and complete the missing backend services while keeping everything aligned with your current architecture, formatting, and test standards. I’ll implement the required service classes, refactor any fragile logic I encounter, and add clear JUnit tests so the full suite passes cleanly. You’ll receive a focused pull request plus a short README update explaining build steps and any new public methods or endpoints. I’m comfortable working iteratively via repo tickets to clarify edge cases and keep momentum high.

@extreamcode

Hi, Your Java backend project immediately caught my eye because it’s clear you need a developer who respects your existing codebase’s integrity while efficiently wrapping up the missing service layer. I have extensive experience with Java 17, Maven, and JUnit, ensuring that new code seamlessly integrates, passes tests, and adheres to precise formatting rules. I specialize in backend feature development and refactoring brittle code sections to boost reliability and maintainability. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. I can start by reviewing the current codebase, then proceed with adding the requested service classes, writing comprehensive unit tests with meaningful assertions, and documenting everything clearly in the README so your team can easily continue. Looking forward to finalizing the plan and delivering code that gets your product into full testing smoothly. Could you share examples of the specific missing features or any edge cases you anticipate needing special attention? Best regards, Asad

@kamran2012

Hello, I will complete your Java 17 backend by adding the missing service classes and wiring them cleanly into your existing codebase. I can refactor brittle areas while keeping the same project conventions, and I will make sure everything compiles with Maven and passes the full JUnit test suite. Looking forward to discussing further. Regards, Kamran.

@nikhilgarg96

Having worked extensively with Java and backend technologies, I'm well-versed in developing robust and scalable applications, which is exactly what your project needs. Some of my past projects include the development of CRM and ERP systems, web-based POS, mobile apps, and custom websites - showcasing my diverse skills and ability to handle complex requirements effectively. In terms of core expertise relevant to your project, I have significant experience in software development using Git, Javascript, and PHP - along with a strong understanding of software architecture. Combined with my familiarity with plain Java 17, Maven, JUnit tests, and a small in-memory database like you have in place; I am confident in adding the missing feature set to your codebase. Having dealt with similar stacks before, I can also perform any necessary refactoring to ensure clean wiring with existing logic. Lastly, my workflows align well with your project's expectations. By closely adhering to existing formatting conventions and ensuring code that compiles and passes the test suite, I prioritize stability and reliability in any task undertaken. Thanks...

@durgesh8527

As a seasoned Full Stack Software Engineer with over 12 years of hands-on experience, I possess the necessary expertise to tackle your Java Backend Feature Development project. My deep knowledge of Java, JavaScript, and PHP coupled with my strong understanding of software architecture make me an ideal fit for this task. I have worked extensively with plain Java and Maven, as well as JUnit tests, which aligns perfectly with your current tech stack. My proficiency also extends to efficient coding practices and refactoring existing codebases to ensure better performance and resilience. I understand the importance of following uniform formatting conventions, maintaining compatibility within the codebase, and delivering clean, readable code that compiles seamlessly into existing projects. In addition to these technical abilities, my commitment to adhering to strict deadlines and providing high-quality work is a testimony to my professionalism. I understand that effective communication is crucial for project success, so you can count on me for prompt responses and updates throughout the project lifecycle. Let's join hands to take your application to its full potential!

@hireageek

Hi there, I understand the critical phase your Java application is in as you prepare for full testing. With the core components in place and the need to enhance the backend functionality, I am confident that I can seamlessly integrate the required features into your existing codebase. I bring extensive experience in Java development, specifically with Java 17 and Maven, and am well-versed in writing unit tests that robustly cover service classes. My approach would be to carefully analyze the current structure, refactor any brittle sections, and ensure that every new service class aligns perfectly with your existing framework. I will deliver clean, well-documented code that passes your test suite and adheres to your coding conventions. Once I complete the work, I will provide a concise README that details the new features and necessary build steps. Let’s get this moving swiftly! What specific features do you need prioritized in the backend development?

@abubakar12345678

I can develop backend of your Java project according to your requirements. Give me opportunity to show you good result. Thanks

@Herculesz

Hi I can complete and harden your Java 17 backend by implementing the missing service classes and integrating them cleanly into the existing Maven/JUnit codebase. A typical technical risk at this stage is “feature gaps” being filled with tightly coupled logic that becomes brittle and hard to test against an in-memory DB. I address this by refactoring into clear service boundaries, consistent interfaces, and testable units while keeping your current formatting and project conventions. I’m comfortable with Java 17, Maven builds, JUnit (and Mockito-style isolation when needed), and designing services that behave deterministically in fast-running in-memory test setups. Each feature I add will include focused unit tests with meaningful assertions for edge cases, validation rules, and failure paths so regressions are caught early. I’ll also ensure the project compiles cleanly, all tests go green, and any public methods/endpoints are documented in a concise README update. This gives you a backend that’s stable, review-friendly, and ready for full testing without changing your overall architecture. Thanks, Hercules

@marjanahmed13

Hi! My name is Marjan and I'm here to offer you my services as a skilled applicant with over a decade of experience working on Freelancer.com. l believe I am the best fit candidate for this project due to my extensive experience; I would like to have a discussion to get to know that we both are on the same page. Once the scope will be locked, I will start working on it right away.

@devendrathakur12

Hello, I specialize in Java backend systems and I’ve built and customized large-scale server-side applications that move cleanly into testing. The main challenge here is finishing missing logic without breaking what already works. I’m certified in Java development and I will solve this by extending your existing Java 17 services, refactoring weak spots carefully, and adding solid JUnit tests so everything compiles and stays green. I’ll follow your current structure, formatting, and build flow so the PR merges smoothly. I’ve worked on similar repos where speed mattered but stability mattered more. A few questions for you. Which features are still missing? Are there known edge cases already flagged? Should new services stay in-memory only for now? Do tests need high coverage or just critical paths? Are performance checks part of testing? This will get your backend test-ready without surprises. Best regards, Dev S.

@Muhammadzeesha59

Hello Sir/MAM I am a skilled full stack developer. Having rich experience in Java , C++ , C , C# , Python , Eclipse , Sql , Mysql , .Net ,Oracle , Object Oriented Programming , Data Structure , Algorithms . I have a perfect grip on “Artificial Intelligence” “Automation” , and work in “Machine Learning” Deep Learning ”. My track record as demonstrated in my 100% job completion and 5-star review rating showcases My ability to deliver exceptional results on time and with utmost quality I believe that my skill set makes me the ideal candidate for this project Please come on chat we will discuss more about this I will be waiting for your reply . Thanks and Best Regards

@AZTURK1

Hi there, I understand you need comprehensive backend development to complete your Java application for full testing readiness. I’m confident in enhancing your server-side logic with clean integration into your current Java 17 Maven setup. - Develop the missing service classes ensuring robust, maintainable code - Refactor brittle sections for improved reliability and performance - Deliver clean, compiling code with unit tests matching your existing JUnit standards - Provide a concise README detailing build instructions and new API methods **Skills:** ✅ Java backend development with Maven and JUnit integration ✅ Code refactoring and clean code practices ✅ Git version control and seamless PR submission ✅ Writing meaningful unit tests and ensuring 100% test suite pass ✅ Software architecture aligned with existing project conventions **Certificates:** ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 I’m ready to start immediately and ensure a seamless completion within 7 days. Could you share more details about the specific backend features that remain to be implemented or any tricky areas you anticipate? Best regards,

@sasaprogramer21

Hi, I have strong experience completing and stabilizing Java backend codebases in existing repos, focusing on clean service layer design, reliable unit tests, and safe refactors that do not break established conventions. This project fits my workflow of shipping PRs that compile cleanly, keep formatting consistent, and keep the test suite green. I will start by pulling your repository, running the Maven build and current JUnit suite, then mapping the missing backend feature set into clear service classes and interfaces that match your existing structure. While implementing, I will refactor brittle sections only when necessary, keeping changes small, readable, and easy to review. I will add unit tests with meaningful assertions, covering core logic plus edge cases, and ensure the in memory database setup remains fast and deterministic for repeatable runs. You will receive a focused pull request with updated classes, new tests, and a concise README update describing build steps and any new endpoints or public methods. I am ready to work efficiently through your repo ticket board and deliver a high quality backend completion with professional ownership. Best Alex

@GameOfWords

Java Backend Feature Development I’m a full-stack software engineer with expertise in React, Node.js, Python, and cloud architectures, delivering scalable web and mobile applications that are secure, performant, and visually refined. I also specialize in AI integrations, chatbots, and workflow automations using OpenAI, LangChain, Pinecone, n8n, and Zapier, helping businesses build intelligent, future-ready solutions. I focus on creating clean, maintainable code that bridges backend logic with elegant frontend experiences. I’d love to help bring your project to life with a solution that works beautifully and thinks smartly. To review my samples and achievements, please visit:https://www.freelancer.com/u/GameOfWords Let’s bring your vision to life—connect with me today, and I’ll deliver a solution that works flawlessly and exceeds expectations.

@rbtech1984

Hi There!!! ⚜⭐⭐⭐⭐⚜(( Complete missing Java backend features with clean code and tests ))⚜⭐⭐⭐⭐⚜ I see you already have a Java 17 Maven codebase with unit tests, and you need the remaining backend service layer implemented so the product can enter full testing. You want new service classes, refactoring where needed, and tests that pass without breaking existing conventions. I have strong Java backend experience, including building service layers, writing clean unit tests with JUnit, and working directly in Git repos. I will implement the missing features, refactor brittle sections, and ensure everything follows your current formatting and architecture. Mini strategy: Review existing code patterns, implement missing service classes, add meaningful unit tests, and run the full suite. I will keep changes minimal and consistent, then document new endpoints or public methods. Three most important features: Complete missing service classes and logic Refactor brittle sections for stability Add unit tests with meaningful assertions If you share the repo link and ticket details, I can start immediately and deliver clean PR-ready work. Warm Regards, Farhin B.

@usmanbashir12100

The core of my Java application is in place, yet the server-side logic needs to be rounded out so the product can move into full testing. I have the existing codebase, build scripts, and unit-test framework ready in a Git repository; you will be working exclusively on the backend, adding the missing feature set and wiring it cleanly into what already exists. The current stack uses plain Java 17 with Maven, JUnit tests, and a small in-memory database for quick runs. Your mission is to create the remaining service classes, refactor any brittle sections you spot along the way, and commit code that compiles, passes the test suite, and follows the same formatting conventions already in the project. Deliverables • New or updated Java classes covering the requested backend functionality • Corresponding unit tests with meaningful assertions • A concise README note explaining build steps and new endpoints or public methods I’ll merge your pull request once the tests are green and the code review shows no regressions. If you have questions about edge cases or need sample payloads, ping me on the repo ticket board and I’ll respond quickly so you can keep moving.

@leenadvnani6

Good Day Mohamad, As a senior Java developer specializing in backend development, I am well-equipped to enhance your Java application by adding the missing feature set and seamlessly integrating it with the existing codebase. I ensure clean and efficient backend logic implementation, along with thorough testing using JUnit. I would like to connect with you in chat to discuss your exciting project further, Mohamad H. Why Choose me? - Unlimited Revisions: Ensuring your satisfaction. - Unique Creations: Tailored solutions for your project. - Money-Back Guarantee: Your trust is valuable. - 24/7 Communication: Prompt responses to your queries. - Timely Delivery: Meeting project milestones efficiently. Browse my portfolio for quality work samples: https://www.freelancer.com/u/leenadvnani6 Let's discuss your project further in the chat. Best regards, Leena Kumari :)

@mughiraaa

Hi, I have reviewed the details of your project. we specialize in backend Java development and have experience completing existing codebases while maintaining clean architecture, unit testing, and consistent formatting. For your project, I will implement the remaining service classes, refactor any brittle code, and ensure all new functionality integrates seamlessly with your existing Maven setup. All delivered code will compile, pass JUnit tests, and follow your established conventions. I will also include corresponding unit tests with meaningful assertions and a concise README explaining build steps and any new endpoints or public methods. Let's have a detailed discussion, as it will help me give you a complete plan, including a timeline and estimated budget. I will share my portfolio in the chat. Best regards, Mughiraa