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Freelancer Needed for Python to Java Code Migration I am looking for an experienced developer to migrate an existing project from Python to Java. The goal is to fully convert the codebase while maintaining functionality, improving structure, and ensuring high performance. Project Overview: The current application is built in Python and needs to be rewritten in Java. The final product should follow clean coding standards, be well-structured, and easy to maintain. Key Requirements: Strong experience in both Python and Java Solid understanding of object-oriented programming (OOP) Ability to accurately translate logic and functionality between languages Experience with debugging and testing Scope of Work: Rewrite the Python codebase into Java Maintain all existing features and functionality Refactor and optimize where necessary Test the Java version to ensure everything works correctly Preferred Skills: Experience with large or complex code migrations Familiarity with Java frameworks (if applicable) Knowledge of performance optimization Additional Details: Full access to the current Python code will be provided Clear communication and progress updates are required Deadline and budget can be discussed
Projektin tunnus (ID): 40332577
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Aktiivinen 23 päivää sitten
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79 freelancerit tarjoavat keskimäärin $176 USD tätä projektia

Hi, ➡️ I read your project description about needing a freelancer for Python to Java Code Migration. Youre looking to convert an existing Python application into Java while maintaining its functionality and ensuring the code is clean, structured, and performs well. ⏺️ I specialize in programming languages translation, with extensive experience in both Python and Java. My expertise includes object-oriented programming, code optimization, and maintaining logical consistency across languages. I have successfully handled several large-scale code migrations, ensuring seamless transitions and optimal application performance. Regards, Aftab Ahmad Full Stack Developer (12 Years of Experience)
$150 USD 6 päivässä
7,4
7,4

⭐⭐⭐⭐⭐ Migrate Your Python Project to Java with Expert Precision ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project needs and see you are looking for a developer to migrate your Python code to Java. You don't need to look any further; Zohaib is here to help you! My team has successfully completed over 50 similar projects focused on code migration. I will ensure a smooth transition while maintaining functionality and improving the structure of your application. ➡️ Why Me? I can easily handle your Python to Java migration as I have 5 years of experience in both languages, with a strong focus on object-oriented programming and code optimization. My expertise includes debugging, testing, and ensuring high performance, which means your project will be in capable hands. ➡️ 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 connecting with you! ➡️ Skills & Experience: ✅ Python Development ✅ Java Development ✅ Object-Oriented Programming ✅ Code Migration ✅ Debugging ✅ Testing ✅ Performance Optimization ✅ Clean Coding Standards ✅ Code Refactoring ✅ Communication Skills ✅ Java Frameworks ✅ Software Maintenance Waiting for your response! Best Regards, Zohaib
$150 USD 2 päivässä
7,7
7,7

Hello I know both Python and Java and I have extensive experience with converting code from one programming language to another one. I have completed hundreds of code conversions projects on freelancer.com here.
$67,50 USD 1 päivässä
6,3
6,3

I'm Iosif Peterfi, 15+ years helping teams translate complex requirements into reliable systems. This is my speciality: cross-language migrations that preserve behavior, elevate structure, and boost performance while reducing risk and ongoing maintenance. You're looking to rewrite a Python codebase in Java, keeping all features, improving the architecture, and validating performance through thorough testing. I'll deliver a clean, well-structured Java version with preserved functionality, clearer organization, and maintainable code. You'll get a transparent plan, risk-managed milestones, and solid test coverage to ensure a smooth transition. Recently I helped a logistics client migrate a Python data processor to Java, addressing complex logic and latency spikes. Post-migration, processing time dropped by 30% and the path to adding new features accelerated significantly. Happy to discuss scope alignment. Let's chat - I can walk you through my approach in 15 minutes.
$1 200 USD 5 päivässä
6,2
6,2

Hi, I can handle the complete migration of your Python project to Java, ensuring full feature parity, clean architecture, and improved performance. With strong experience in both languages, I’ll accurately translate all logic, maintain object‑oriented principles, and refactor where needed for clarity and scalability. Breakdown I’ll begin by analyzing the current Python code to map dependencies and structure, then rewrite it in Java using modern coding standards and optimized design patterns. Each module will be tested to confirm identical functionality, and I’ll document the new codebase for easy maintenance. Regular progress updates will keep you informed throughout the migration. I’ve completed similar cross‑language conversions and can ensure a stable, efficient Java implementation that’s ready for long‑term use. Best, Justin
$1 000 USD 7 päivässä
5,9
5,9

I hope you're doing well! My name is Nawal, and I bring over nine years of experience in Python to Java Code Migration. After carefully reviewing your project brief, I’m confident that I understand your needs and can deliver exactly what you're looking for. Here’s what I offer: ✅ Multiple initial drafts within 24 to 48 hours ✅ Unlimited revisions until you're 100% satisfied ✅ Final delivery in all required formats, including the editable master file and full copyright ownership You can check out my portfolio and past work here: ? Freelancer Profile – eaglegraphics247 I’d love to discuss your project further and explore how we can make your vision a reality. Let me know a convenient time for a quick chat! Looking forward to working together. Best regards, Nawal
$70 USD 1 päivässä
5,7
5,7

Hello, I came across your project Python to Java Code Migration and I am very interested in working with you. I have reviewed your requirements and fully understand the scope and expectations. I specialize in JavaScript, Website Design, CSS, Animation, HTML, Game Development, Web Development, Web Design and have successfully delivered similar projects before. I am committed to delivering high-quality work with reliability, clarity, and professionalism. I work transparently throughout the project so progress, deadlines, and expectations stay clear at every stage. I would be glad to discuss further details and am ready to start immediately. Looking forward to hearing from you. Regards, Anum
$140 USD 3 päivässä
5,1
5,1

Hi, I can do this. With extensive experience in both Python and Java, I am well-equipped to migrate your project while ensuring functionality and performance are maintained. My strong understanding of object-oriented programming allows me to accurately translate logic between the two languages. I will rewrite the existing Python codebase into Java, refactoring and optimizing where necessary to enhance structure and maintainability. I prioritize clean coding standards and will conduct thorough testing to ensure the Java version operates flawlessly. I have successfully completed similar large-scale migrations and am familiar with Java frameworks, which will aid in optimizing performance. I am committed to clear communication and will provide regular progress updates. I look forward to discussing the deadline and budget further. Best regards, Ashnasajid
$140 USD 3 päivässä
4,6
4,6

Hello, I hope you’re well. I’m focused on turning Python logic into clean, maintainable Java code. With a strong background in both Python and Java and a solid grasp of OOP, I translate intricate behaviors and performance-sensitive paths into structured, idiomatic Java while preserving feature parity. I’ve completed large code migrations where I mapped Python workflows to statically-typed, testable Java modules, refactored for better test coverage, and optimized critical paths for speed. I’ll rewrite the Python codebase into Java, preserve all functionality, and restructure for readability and maintainability, including refactors where needed and thorough testing. I can handle this start-to-finish based on my experience and your requirements, delivering a robust Java version that aligns with clean coding standards. I propose a phased plan with progressive reviews to ensure alignment and early risk mitigation. 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
$250 USD 3 päivässä
4,5
4,5

Hi there, I'm Kristopher Kramer from McKinney, Texas. I’ve worked on similar projects before, and as a senior full-stack and AI engineer, I have the proven experience needed to deliver this successfully, so I have strong experience in Web Development, CSS, HTML, Game Development, Web Design, Website Design, JavaScript and Animation. I’m available to start right away and happy to discuss the project details anytime. Looking forward to speaking with you soon. Best regards, Kristopher Kramer
$120 USD 3 päivässä
4,1
4,1

Hi sir, could you send me the existing python code and give me a description of the project functionality please?
$140 USD 21 päivässä
4,4
4,4

Hi Mate , Good evening! I’ve carefully checked your requirements and really interested in this job. I’m full stack node.js developer working at large-scale apps as a lead developer with U.S. and European teams. I’m offering best quality and highest performance at lowest price. I can complete your project on time and your will experience great satisfaction with me. I’m well versed in React/Redux, Angular JS, Node JS, Ruby on Rails, html/css as well as javascript and jquery. I have rich experienced in Web Development, JavaScript, Game Development, CSS, Web Design, Animation, HTML and Website Design. For more information about me, please refer to my portfolios. I’m ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details.. Thanks
$155 USD 2 päivässä
4,1
4,1

Hello, As an experienced developer with a strong background in both Python and Java, I am well-equipped to handle the code migration project you have outlined. I have carefully reviewed the project description and understand the importance of converting the codebase while maintaining functionality, improving structure, and ensuring high performance. My approach to this project involves meticulously rewriting the Python codebase into Java while adhering to clean coding standards and ensuring the final product is well-structured and easy to maintain. I will accurately translate logic and functionality between languages, refactor and optimize where necessary, and conduct thorough testing to guarantee a seamless transition. With my expertise in object-oriented programming, debugging, and testing, I am confident in my ability to successfully complete this migration. I am committed to working closely with you throughout the process to ensure your satisfaction with the final result. I would love the opportunity to discuss the project further with you in chat. Best regards, Syed
$140 USD 2 päivässä
3,8
3,8

Hey there is this a straight Python to Java migration with matching behavior first, or do you also want some parts refactored and optimized during the move? Also, is the current codebase mostly pure Python logic, or does it depend on specific libraries or framework parts that will affect the Java structure and testing approach? I can help convert the codebase carefully, keep the existing functionality intact, and reorganize it into a cleaner Java structure with solid OOP. My focus would be logic parity first, then targeted cleanup and testing so the Java version is stable, maintainable, and easier to extend. Regards, Kostiantyn
$140 USD 7 päivässä
3,8
3,8

Hi there, You’re absolutely in the RIGHT PLACE. I’ve delivered SIMILAR PROJECTS multiple times and know EXACTLY how to execute this efficiently and correctly from day one. To lock down the SCOPE, TIMELINE, AND PRICING, I’ll need to ask you a few key questions. Unfortunately, Freelancer’s 1500 CHARACTER LIMIT doesn’t allow me to break everything down properly here. Let’s jump on CHAT so I can show you my PROVEN PAST WORK, walk you through the REAL RESULTS I’ve delivered, and outline a CLEAR ACTION PLAN for your project. You’ll immediately see why my approach is DIFFERENT and EFFECTIVE. If you’re serious about getting this done RIGHT, I’m ready to move forward. Looking forward to CONNECTING and WINNING TOGETHER. Cheers, Mayank Sahu
$140 USD 7 päivässä
3,9
3,9

Hi there, ✸✸✸Python & Java Expert is Here✸✸✸ As a professional Python and Java Expert Developer, I'll convert the codebase of your Python application into Java Framework with maintaining functionality, improving structure, and ensuring high performance as you required. Also I'll make sure that the Java code will be clean coding standards, be well-structured, and easy to maintain. So, come on my chat box and share me that python script file, I'm ready to start working on it right away. Thanks in advanced! Eng. Bablu Mondol.
$100 USD 2 päivässä
3,4
3,4

Hi, As a individual developer and I can jump into on your suitable time. I can help in your project, focusing on migrating your Python codebase to Java while preserving functionality, improving structure, and ensuring clean, maintainable architecture. With my expertise in full-stack development and experience working with modern web technologies like Python, Java, OOP design, code refactoring, and performance optimization, i can fix this quickly. I can carefully translate the logic, restructure the code using proper Java patterns, and validate everything through testing to ensure the new version runs reliably and efficiently. You can expect clear communication, fast turnaround, and a high-quality result that fits seamlessly into your existing workflow. Best regards, Juan
$140 USD 1 päivässä
3,3
3,3

Hi, I’ve reviewed your project and understand you need a full migration of your Python codebase to Java while maintaining all functionality, improving structure, and ensuring performance. I have extensive experience in Python and Java, including large-scale code migrations with OOP best practices, refactoring, and testing. My approach will start with analyzing the current code, mapping modules to Java, and implementing tests during migration. Could you confirm if any Python-specific libraries need equivalent Java solutions? Best regards, SH
$100 USD 7 päivässä
3,5
3,5

Migrating a codebase from Python to Java demands not only a precise translation of logic but also a thoughtful restructuring to leverage Java’s strengths in performance and maintainability. This project requires a meticulous approach to ensure that every feature functions identically post-migration while enhancing code clarity and efficiency. Understanding the nuances of both languages and their ecosystems is critical to delivering a robust, clean, and scalable Java application that meets your goals. The migration will be approached by first thoroughly analyzing the existing Python code to capture all functional details and dependencies. Java’s object-oriented paradigms will be leveraged to refactor and optimize the structure, improving modularity and future maintainability. Rigorous testing and debugging will be integrated throughout the process to guarantee parity with the original application’s behavior. Familiarity with Java frameworks and performance tuning techniques will be applied where relevant to enhance the final product’s responsiveness and scalability. Commitment to transparent communication and timely updates will ensure you remain informed throughout the migration process. The code will be delivered with comprehensive documentation and tested to meet your functional and performance expectations. Let’s discuss how to tailor this migration to your timeline and budget to achieve a seamless transition from Python to Java that elevates your application’s quality and longevity.
$225 USD 7 päivässä
3,3
3,3

Dear Sir, I am thrilled to bid your project. This is a strong fit for me because I have experience migrating systems between languages while preserving logic, improving structure, and ensuring long-term maintainability. I understand this is not just a line-by-line conversion, but a clean rewrite where Python logic is translated into well-structured, object-oriented Java code with better performance and clarity. I have worked with both Python and Java in production systems, handling data processing, APIs, and modular architectures. For your project, I would: Analyze the existing Python codebase and identify core modules and logic flow Design a clean Java architecture using proper OOP principles Rewrite functionality carefully while improving structure and readability Add testing to validate parity between Python and Java outputs Optimize performance where needed I focus on writing maintainable, well-documented code so future updates are straightforward. I’d like to go over a few points: How large is the current Python codebase (files/modules)? Does the project depend on specific Python libraries that need Java equivalents? I can deliver a reliable, clean migration with clear progress updates. Sincerely, Adison.
$140 USD 7 päivässä
3,3
3,3

George, South Africa
Liittynyt maalisk. 27, 2026
min $50 USD/ tunnissa
$250-750 USD
₹12500-37500 INR
₹12500-37500 INR
$30-250 USD
₹12500-37500 INR
$30-250 USD
$10-20 SGD/ tunnissa
₹12500-37500 INR
£10-25 GBP
$1500-3000 USD
$10-30 USD
$200-500 USD
$250-750 USD
€14-15 EUR
$15-25 USD/ tunnissa
$10-30 USD
$30-250 USD
₹1500-12500 INR
$10-30 USD
$30-250 USD