Java/Python Backend Integration Engineer

@LiveExperts

Hello, As a seasoned software engineer at Live Experts, my in-depth understanding of both Java and Python, alongside my penchant for system integration, makes me the perfect fit for your Java/Python Backend Integration project. I have several years of hands-on experience with designing and implementing REST APIs in both languages, ensuring smooth interconnection between diverse applications with clean code, as you require. Over the years, I've honed my skills in Software Architecture that ensures that all my projects are modular, readable and well-structured - traits that lend themselves perfectly to develop services just like those you need. Additionally, I'm well-versed in using relational databases like PostgreSQL and familiar with automating processes through containers like Docker. To ensure efficient communication across your cloud-based components, I will incorporate a RESTful endpoints flow that adheres strictly to HTTP semantics - creating a seamless data exchange mechanism tailored exactly to your needs. Post completion, you can expect a detailed ReadMe which will serve as a comprehensive guide to hitting each endpoint alongside observation of data flow to both Postgres and OpenSearch. Lastly, I would like to reiterate my dedication to delivering high-quality outcomes. It is my utmost priority to ensure your satisfaction with every project. Let's kickstart an engaging conversation that'll lead us towards meeting all agre Thanks!

@ZohaibRoy

⭐⭐⭐⭐⭐ Build Seamless REST APIs with Java and Python for Cloud Integration ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project needs and see you are looking for a developer to create REST APIs in Java and Python. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects focused on API development and system integration. I will ensure clean, well-tested code that connects your internal applications with cloud components efficiently. ➡️ Why Me? I can easily handle your project as I have 5 years of experience in API development and system integration using Java and Python. My expertise includes database management, cloud services, and building RESTful APIs. Additionally, I have a strong grip on Docker, OpenAPI, and PostgreSQL, ensuring a smooth integration process. ➡️ Let's have a quick chat to discuss your project in more detail. I can show you samples of my previous work, demonstrating my capability in delivering quality API solutions. Looking forward to discussing this with you! ➡️ Skills & Experience: ✅ Java Programming ✅ Python Development ✅ RESTful API Design ✅ PostgreSQL Management ✅ OpenSearch Integration ✅ Docker Deployment ✅ Unit Testing ✅ Integration Testing ✅ API Documentation ✅ System Integration ✅ CI/CD Practices ✅ Git Version Control Waiting for your response! Best Regards, Zohaib

@rohitpatidar001

With my broad-ranging experience across a wide array of platforms, both in integrating and developing APIs, I am confident that I can successfully execute the task you have at hand. Over almost a decade in the industry, I have honed my skills with Java and J2EE technologies. My expertise includes designing robust RESTful APIs taking advantage of Spring Boot and PostgresSQL while ensuring proper documentation through OpenAPI/Swagger. Apart from integration expertise, I bring along extensive experience with testing. As you expect, I will ensure your new services are well-tuned and free from hitches through automated testing suites run via CI. My commitment to clean architecture, system reliability, and scalability ensures your project's long-term success - as evident by my work on enterprise-grade platforms in finance, healthcare, and more. In essence, I am your one-stop professional for backend development. I have the know-how to turn around web projects within tight timelines without compromising on quality. Let us discuss our plans occasionally so that they are aligned. Together let's create powerful Java/Python applications with spick and span integrations.

@kamran2012

Interesting project, I will build the Java and Python REST services, wire them to PostgreSQL for transactional storage, and index events into OpenSearch — all Docker-ready with OpenAPI docs and automated test suites. For the cloud integration layer, I will use an async event-driven pattern with the message queues so writes to Postgres and OpenSearch stay consistent — a dead-letter queue catches failures without blocking the main pipeline. Questions: 1) Which Java framework do you prefer — Spring Boot or another? 2) Are the message queues SQS, RabbitMQ, or something else? Send me a message and we can go over the details. Best regards, Kamran

@corpmember29

I will BUILD ROBUST JAVA + PYTHON API INTEGRATIONS WITH POSTGRESQL AND OPENSEARCH FOR SCALABLE, SEARCHABLE CLOUD-READY SYSTEMS As per your requirements, I bring 12+ years of IT experience in backend architecture, REST API development, and large-scale system integration using Java, Python, PostgreSQL, and search indexing platforms like OpenSearch. I understand this is a system integration and data flow engineering task, focused on clean APIs, reliability, and real-time searchability across cloud and internal systems. Approach I will design modular Java and Python microservices that integrate internal applications with cloud resources while ensuring secure, testable, and production-ready data pipelines. Core Implementation Plan • Design RESTful APIs (Java + Python) with clean architecture principles • Integrate PostgreSQL for transactional data storage • Implement OpenSearch indexing for real-time searchable data • Connect IAM-secured endpoints, queues, and object storage • Standardized API contracts using OpenAPI/Swagger System Workflow Internal services → API layer (Java/Python) → PostgreSQL storage → event pipeline → OpenSearch indexing → searchable API responses. Why Me I specialize in building enterprise-grade integration systems where multiple services, databases, and search engines must work together reliably. My focus is clean architecture, maintainability, and production-grade testing for long-term stability.

@Softeria

✅ Proposal for Java/Python Backend Integration En With a strong background in Java and Python, I am proficient in designing and implementing REST APIs, integrating with cloud-based components, and ensuring clean, well-tested code. My expertise extends to working with PostgreSQL for transactional storage and indexing content into OpenSearch. I have successfully developed and maintained modular, Docker-ready builds, ensuring seamless service deployment. My work includes thorough documentation with OpenAPI/Swagger and robust automated test suites to validate integration. I am excited to map and integrate your internal services with the provided cloud resources, delivering a comprehensive, efficient backend system. Lets plan the milestones.

@Herculesz

Hi, I can help you design and implement the REST APIs for seamless data exchange between your internal applications and the cloud-based components. I’ll work on mapping and integrating your existing internal services with the cloud resources, ensuring that they are secure using IAM, message queues, and object storage. The APIs will follow standard HTTP semantics, be well-documented with OpenAPI/Swagger, and include unit and integration tests to ensure everything functions smoothly. For the implementation, I will use Java for backend services requiring high concurrency or integration with enterprise systems and Python for more flexible, lightweight services. Both will be connected to PostgreSQL for transactional storage and indexed into OpenSearch for easy, real-time event discovery. I'll deliver Docker-ready builds for seamless deployment and a clear README explaining how to interact with the API and observe data in both PostgreSQL and OpenSearch. I have extensive experience building secure, well-documented REST APIs and integrating with databases and cloud systems. I’m confident this project will meet your needs for clean, well-tested code. Thanks, Hercules

@doomshellsl

Hi, We at Doomshell Software Pvt. Ltd. (20+ years experience) would love to support your Java/Python Backend Integration project with a focus on clean architecture, reliable integrations, and scalable API development. We specialize in backend engineering, REST APIs, cloud integrations, and database-driven systems. Our approach: 1. API & Service Development • Build modular Java and Python services with RESTful APIs • Document endpoints using OpenAPI/Swagger • Follow clean, maintainable architecture standards 2. Integration & Data Flow • Integrate internal services with cloud resources, queues, and storage • Connect transactional data flow with PostgreSQL • Implement OpenSearch indexing for fast searchable events 3. Testing & Deployment • Develop unit and integration test coverage with CI support • Deliver Docker-ready services with minimal setup configuration • Provide Git repository, README, and deployment guidance Why us: Strong expertise in Java, Python, and API integrations Focus on scalable, well-tested backend systems Question: Do you want the integration architecture designed primarily around synchronous REST workflows, or should we also incorporate event-driven patterns with queues for higher scalability and resilience? We’re ready to support this project with a robust, production-ready approach. Best regards, Doomshell Software Pvt. Ltd.

@anirudhat

Bridging your internal apps with cloud components through clean, tested REST APIs is exactly the kind of integration work I thrive on. I've built similar dual-language stacks using Spring Boot on the Java side and FastAPI on the Python side, both backed by PostgreSQL for transactional integrity and OpenSearch for real-time indexing. My approach would be to first map your existing services and IAM-secured endpoints, then design modular microservices with full OpenAPI/Swagger documentation, Dockerized environments, and CI-driven test suites covering both unit and integration layers. I'm comfortable juggling Java and Python daily and can start immediately — let's discuss milestones and get this moving.

@toriquldev123

Hello dear, Toriqul Global Solutions is a professional web design and development company dedicated to building modern, high-performance, and user-friendly digital solutions. Founded by Engineer Md. Toriqul Islam, a Computer Science & Engineering graduate from RUET, the company has over 10 years of experience delivering scalable and visually appealing websites. Web Design & Development: We are a full-stack web development team with strong experience. Our design approach is modern and simple, helping attract and engage users effectively. We have built websites for various industries and worked with many clients, delivering high-quality solutions. Client satisfaction is always our top priority. Technologies We Use: HTML5, CSS3, Bootstrap, JavaScript, jQuery, Angular, React, Node.js, WordPress, PHP, Laravel, .NET, CodeIgniter, Python, Ruby on Rails, MySQL, MongoDB. Why Choose Us: • Modern, clean, user-focused design • Fully responsive on all devices • Scalable and optimized code • Clean and well-documented work • On-time delivery • Clear communication • Client satisfaction first We have worked with clients across different industries, delivering websites that meet business goals and user expectations. Let’s build something great together. We are ready to discuss your project and start immediately. Best Regards, Toriqul Global Solutions

@VianRey1

When data flow between internal apps and new cloud components gets tangled, even small issues can snowball into downtime or unreliable search. Without clean APIs wired to both Postgres and OpenSearch, every integration bug risks lost time and trust. You can expect a set of modular Java and Python services, each with REST endpoints that are fully tested and documented in OpenAPI, all running together in Docker with instant visibility of data moving from event to index. First, I’ll connect your existing services to the IAM-secured cloud resources you provide. Next, I’ll design and implement RESTful APIs that follow standard HTTP semantics, wired to Postgres and OpenSearch. Finally, I’ll deliver a Git repo with automated CI tests, a clear OpenAPI spec, and a README to make it all easy to use. Which part of your current integration setup causes the most friction right now?

@Tanmoy236

Warm greetings! As a seasoned API developer, I specialize in Java/Python REST integrations with scalable, cloud-ready architecture. With over 9 years of experience, I deliver clean, tested code that ensures seamless data flow across services, Postgres, and OpenSearch. Here's how I can help: * Design RESTful APIs with OpenAPI/Swagger and HTTP best practices * Integrate services with IAM-secured endpoints, queues, and storage * Implement PostgreSQL transactions + OpenSearch indexing pipelines * Deliver Dockerized setup, CI-tested code, and clear documentation I’ve built similar multi-service systems. Do you have a preferred framework stack or CI toolchain?

@SmartCodeDev

Hey, I can handle this. I usually split things into a Spring Boot service (core logic) and a FastAPI service (lightweight APIs), both designed from OpenAPI-first so everything stays clean and consistent. Postgres would be managed with migrations (Flyway/Alembic), and I’d push events to OpenSearch asynchronously so indexing doesn’t slow anything down. I also wrap internal services with adapters to keep integrations flexible and testable. Everything will run via Docker Compose (APIs + Postgres + OpenSearch), with solid tests (JUnit/Testcontainers + Pytest) and CI to prove the flow end-to-end. Happy to align on milestones

@jeanpatrickr8

Hello! I appreciate the opportunity to apply for your project involving the integration of internal applications with cloud-based components. I understand that you need robust REST APIs designed and implemented in both Java and Python, ensuring smooth data exchange and discoverability through OpenSearch. With extensive experience in building scalable APIs and integrating systems, I specialize in both Java and Python development. I have successfully delivered similar projects involving PostgreSQL and OpenSearch, utilizing best practices to ensure clean, well-tested code. My approach to your project will include: - Analyzing your existing services to create a seamless integration plan with the provided cloud resources. - Implementing RESTful APIs that adhere to HTTP semantics, complemented by comprehensive OpenAPI documentation. - Developing a Git repository with modular code architecture for both Java and Python services. - Setting up Docker configurations to ensure smooth deployment of all components, including CI for automated testing. I am excited about the possibility of collaborating on this project and am confident in my ability to deliver quality results on time. I look forward to discussing your timeline and milestones further!

@giaphung2k1

Hello With expertise in Java and Python backend development, I specialize in crafting robust integration solutions. I'll architect and implement seamless data exchange between your internal applications, ensuring efficiency, reliability, and scalability. Let's unify your systems to enhance operational flow and data consistency. Giáp Văn Hưng

@billybryan98

Hello there, I hope you are doing well. I am an experienced backend engineer fluent in Java and Python, focused on clean, well-tested interfaces and reliable data flows between on-prem and cloud resources. In past work I’ve designed REST APIs, integrated PostgreSQL for transactional storage, and set up OpenSearch indexing with automated tests and OpenAPI docs, all containerized for CI/CD. I can deliver a modular repository with Java and Python services, Docker-ready configs for Postgres and OpenSearch, an OpenAPI spec, and robust test suites that run in CI. 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

@WIFTCAP

Hi , I’ve reviewed your requirement and this is a strong fit for my experience in backend integrations using both Python and Java. I understand you need clean, well-tested services to connect internal systems with cloud components, along with proper API design and documentation. How I can help: Build REST APIs in Java and Python with clean, modular structure Integrate services using IAM-secured endpoints, queues, and object storage Store transactional data in PostgreSQL and index searchable data in OpenSearch Ensure proper API standards with OpenAPI/Swagger documentation Write unit and integration tests to ensure reliability Provide Docker-ready setup for easy deployment I have experience working on integration-heavy systems, handling APIs, data flow, and ensuring everything is testable and maintainable. I focus on clean code, proper documentation, and smooth CI/CD-ready delivery. I can deliver a structured repository with clear setup instructions and tested endpoints. Quick question: Do you already have defined API contracts, or should I help design them from scratch? Looking forward to your response. Best regards, Wiftcap Solution Pvt Ltd

@KanzahAfaqAhmad

Hi there, I understand your need for seamless data exchange between your internal applications and new cloud-based components via well-tested REST APIs. I can help you design and implement these APIs using both Java and Python, ensuring they are efficiently integrated with PostgreSQL for transactional storage and indexed in OpenSearch for quick discoverability. With over 7 years of experience in Software Architecture, API Development, and Integration, I am adept at creating modular, maintainable code. My expertise in Java, Python, and PostgreSQL ensures that your integration work will meet high standards and performance. You can review my portfolio for examples of similar projects I have undertaken: https://www.freelancer.com/u/KanzahAfaqAhmad I am excited about the opportunity to discuss your project details and establish a timeline that fits your needs. Thank you for considering my proposal. Best Regards, Kanzah Afaq

@seandinwiddie

⏳ Timeline: 4 days ⏳ ✅ Cost: $440 USD ✅ ✨✨✨ ✨✨✨ ✨✨✨ ✨✨✨ ✨✨✨ ⭐⭐⭐ Portfolio : https://www.freelancer.com/u/seandinwiddie ⭐⭐⭐ Hi, Dear. I can build Java & Python integration services to connect internal systems with cloud components, ensuring reliable data exchange and clean architecture. I will design REST APIs with OpenAPI docs, IAM-secured endpoints, and event-driven integration using queues, with Postgres for transactions and OpenSearch for indexing. Services will be Dockerized, modular, and fully tested with unit/integration tests, plus CI-ready pipelines and clear README for setup and usage. Let’s align milestones and delivery plan so everything matches your architecture and scalability goals. Best Regards. Sean D. ✅