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Position Summary: We are seeking a highly skilled and experienced Senior Integration Developer on Contractual basis (6-12 months) for an Australian company to contribute to the design, development, and deployment of enterprise integration solutions. Note: We are not looking for full stack developers. We need candidates with strong, hands-on Integration Developer experience in Apache Camel, Groovy/Java, Spring Boot, JUnit 5, and Azure Integration Patterns with strong focus on building scalable, secure, and maintainable integration services. Key Responsibilities: • Design and implement integration solutions using Apache Camel and Spring Boot. • Develop and maintain microservices and APIs using Groovy/Java. • Deploy and manage containerized applications using Azure Container Apps and Azure Container Registry. • Write robust unit and integration tests using Junit 5 to ensure code quality and reliability. • Deploy, manage and running applications using Azure. • Collaborate with cross-functional teams to gather requirements and translate them into technical solutions. • Troubleshoot complex integration issues and working with technical teams/business to resolve issues and enable new features in applications maintain documentation. • Stay updated on integration best practices. • Optimize performance and scalability of integration services. • Ensure adherence to security and compliance standards in all integration solutions. • Provide mentorship and technical guidance to junior developers. Required Skills & Experience: Must-Have: • Bachelor's or master's degree in computer science, Engineering, or equivalent experience. • 10+ years of experience in integration development. • Strong proficiency in Apache Camel for routing and mediation rules. • Strong understanding of Azure Patterns like Azure Service Bus, Key Vault, Application Gateway, APIM, Azure Artifacts, Azure Data Factory, Cosmos DB, Azure SQL Database. • Proficiency in deploying and managing and running applications in Azure, especially using Azure Container Apps and Container Registry. • Java Microservice development experience for cloud native architecture API Gateway, Docker. • Solid development knowledge of Java in enterprise environments. • Solid understanding of Spring Boot framework and microservices architecture. • Experience with JUnit and test-driven development practices. • Should have good Database/SQL knowledge • Hands-on experience with Groovy and Spring Boot. • Familiarity with CI/CD pipelines and DevOps practices. • Excellent problem-solving and communication skills. Good-to-Have: • Experience with other integration platforms or ESBs. • Knowledge of cloud-native development and Azure services. • Certification in Azure or Java technologies is a plus. • Experience using monitoring/logging tools like Dynatrace or Splunk • Experience with Scrum and Agile frameworks
Project ID: 40639537
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117 freelancers are bidding on average $23 AUD/hour for this job

Hello, I’m a Senior Java/Spring Boot Developer with 11+ years of professional experience, with strong hands-on experience building enterprise integration services, REST APIs, microservices, and backend systems. This opportunity is particularly relevant to my background because my experience is heavily focused on Java, Spring Boot, Apache Camel, API integration, databases, Docker, CI/CD, and enterprise application architecture. ### Relevant Experience * Java / J2EE * Spring Boot / Spring Framework * Apache Camel for enterprise integration and routing * RESTful APIs and third-party integrations * Microservices architecture * SQL and relational databases * Docker/containerized applications * JUnit and automated testing * CI/CD and Git-based development workflows * Background processing and event-driven integrations * Enterprise application troubleshooting and performance optimization ### Why I’m a Good Fit Although I have full-stack experience, my strongest professional area is **backend and enterprise integration engineering**. I can therefore focus on the integration responsibilities of this role rather than approaching it as a generic full-stack position. I’m also comfortable troubleshooting complex integration failures, working with business/technical teams to identify the root cause, documenting solutions, and mentoring other developers.
$20 AUD in 40 days
7.3
7.3

Hi, I’m interested in supporting your team as a Senior Integration Developer specializing in Apache Camel. I can help design, develop, maintain, and troubleshoot robust integration solutions across your enterprise systems. I can work with Apache Camel, REST/SOAP APIs, microservices, message-driven integrations, JSON/XML, SQL databases, authentication, error handling, logging, and cloud-based integration environments. I’m also comfortable working with Azure services and integrating heterogeneous systems reliably. My approach focuses on creating clean, reusable Camel routes, proper exception handling, monitoring, performance optimization, and maintainable integration architecture rather than short-term fixes. I can quickly understand an existing integration landscape, troubleshoot production issues, develop new routes/endpoints, and collaborate effectively with your development and technical teams. If you share your current Apache Camel version, integration architecture, Azure environment, and upcoming requirements, I can align with your existing standards and start contributing quickly. I’m available to discuss the role and can begin promptly. Jeneifer
$20 AUD in 40 days
7.2
7.2

Your biggest integration risk is message redelivery causing duplicate side effects across Azure services. I’d start by mapping each Camel route’s source, transformation, destination, security boundary, and failure path. Then I’d build the Spring Boot services in Groovy/Java, cover routing and error behavior with JUnit 5, and package them for Azure Container Apps via ACR and CI/CD. For Service Bus flows, I’d explicitly handle idempotency, retry limits, and dead-letter processing—not leave them as production surprises. Key Vault, APIM, logging, SQL/Cosmos DB access, and maintainable documentation would be treated as part of the integration design. Are your integrations mainly event-driven through Service Bus, synchronous behind APIM, or a mix?
$20 AUD in 40 days
6.8
6.8

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, Linux , Windows , Cloud , Azure , Ubuntu , OpenAI , Desktop Applications. Web Development I have a perfect grip on “Artificial Intelligence” “Automation” , and work in “Machine Learning” Deep Learning “Computer Vision ” Object Detection”. 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
$15 AUD in 40 days
6.0
6.0

I am a Senior Integration Developer with over 10 years of experience, specializing in designing and implementing enterprise integration solutions. My expertise in Azure Integration Patterns, Apache Camel, Groovy/Java, and Spring Boot aligns perfectly with the role you're offering for the Australian company. My background includes developing scalable microservices and APIs, utilizing Azure Container Apps, Azure Service Bus, and deploying solutions in cloud environments. I've successfully led cross-functional projects, focusing on performance optimization, security, and compliance. My proficiency with JUnit 5 ensures robust testing and reliable code quality. I am well-versed in CI/CD pipelines and DevOps practices, making me adept at managing and improving deployment processes. Additionally, my experience in mentoring junior developers and solving complex integration issues equips me to contribute effectively to your team. I look forward to the opportunity to discuss how my skills can benefit your organization. Please let me know if there's a suitable time for us to connect.
$25 AUD in 40 days
6.1
6.1

Hi, I’m Christina. I understand you’re specifically looking for a Senior Integration Developer—not a general full-stack developer—with strong enterprise integration and Azure experience. I have 13+ years of development experience and can contribute hands-on across Apache Camel routing/mediation, Java/Groovy, Spring Boot microservices, REST APIs, JUnit 5, SQL, Docker, and cloud-native Azure deployments. I can work with Azure Integration patterns including Service Bus, APIM, Key Vault, Application Gateway, Container Apps, Container Registry, Azure SQL/Cosmos DB, Data Factory, and CI/CD pipelines. I’m also comfortable troubleshooting complex integration flows, improving performance/scalability, implementing secure integration patterns, writing automated tests, and maintaining technical documentation. I understand the 6–12 month contractual requirement and can integrate effectively with an existing Australian engineering team using Agile/Scrum practices. My focus would be maintainable, secure, testable integration services rather than unnecessary application-layer development. I’m available to discuss the existing integration landscape, architecture, and immediate priorities. Thnaks
$18 AUD in 20 days
5.8
5.8

With a background in Java, Spring Boot, Apache Camel, and Azure technologies, I offer over a decade of integration development expertise. I propose creating robust enterprise integration solutions for your Australian company. By utilizing Apache Camel for routing and Azure components like Service Bus and Key Vault, we can ensure scalable, secure, and maintainable services. I can deploy applications using Azure Container Apps and Azure Container Registry for containerized environments. My focus is on building resilient APIs and microservices using microservices architecture and Spring Boot. I prioritize security and compliance throughout the integration process, backed by comprehensive testing. Proficient in CI/CD pipelines, DevOps practices, and Agile methodologies, I aim to streamline development processes and enhance collaboration within cross-functional teams. I have a proven record of optimizing performance and scalability in integration services while staying updated on industry best practices. I am eager to provide mentorship and technical guidance to junior developers within the team, fostering a culture of continuous learning and growth. I am dedicated to meeting current needs and anticipating future requirements for long-term success. I am interested in learning more about your specific objectives, timelines, and any additional integrations or constraints impacting the project. Let's discuss how we can form a strong partnership to achieve your business goals efficiently.
$22.50 AUD in 5 days
5.3
5.3

Hi there, I am excited to submit my proposal for the Senior Integration Developer position with your Australian company. Your requirement for a seasoned professional with hands-on expertise in Azure integration patterns, Apache Camel, and microservices development aligns perfectly with my background and experience. With over a decade of experience in enterprise integration, I have successfully designed, developed, and deployed robust integration solutions for leading organizations. My proficiency in Apache Camel has enabled me to implement complex routing and mediation rules, while my deep understanding of Azure services—including Service Bus, Key Vault, APIM, Cosmos DB, and Container Apps—ensures the delivery of scalable and secure cloud-native architectures. I am highly adept at building and maintaining Java and Groovy-based microservices with Spring Boot, leveraging Docker and Azure Container Registry for efficient containerized deployments. My commitment to quality is reflected in my thorough use of JUnit 5 for unit and integration testing, as well as my familiarity with CI/CD pipelines and DevOps best practices to ensure reliable and rapid delivery. My approach centers on close collaboration with cross-functional teams to gather requirements and deliver tailored solutions. I am proactive in troubleshooting and optimizing integration services for performance and scalability, while always ensuring adherence to security and compliance standards. Additionally, I enjoy mentoring junior developers and fostering a culture of continuous improvement. I am confident that my technical expertise and collaborative mindset will be a valuable asset to your organization. I look forward to the opportunity to contribute to your team’s success and discuss how I can support your integration initiatives. Best regards, DemiVision, LLC
$20 AUD in 10 days
4.6
4.6

Hi, I’m Sahanaj. This is exactly the kind of integration work I enjoy—enterprise integration, not generic full-stack development. I’ve delivered Apache Camel + Spring Boot integrations using Java/Groovy, JUnit 5, REST APIs, Docker and Azure-native patterns including Service Bus, APIM, Key Vault, Container Apps, ACR, SQL and Cosmos DB. I’m comfortable owning design, development, CI/CD, troubleshooting, performance tuning and production support, while mentoring junior engineers. For a 6–12 month engagement, I’m available 20–30 hrs/week at AUD $40/hr and can start immediately. I’d be happy to begin with a technical discussion around your current integration landscape and first priority.
$40 AUD in 40 days
4.8
4.8

Hello There! I’m Md Toriqul Islam, and I’m excited to partner with you. I’m an experienced integration/full-stack developer specializing in Java, Spring Boot, Apache Camel, Groovy, Azure, microservices, APIs, and cloud-native solutions. I understand you need a senior integration developer to design, develop, test, deploy, and maintain scalable enterprise integrations using Apache Camel, Spring Boot, Azure services, containerized applications, and CI/CD practices. I’m skilled in Apache Camel, Java, Groovy, Spring Boot, Azure Container Apps, Service Bus, APIM, Key Vault, Docker, SQL, JUnit 5, and Azure DevOps. I’m ready to contribute to the 6–12 month engagement with strong technical ownership, troubleshooting, documentation, and collaboration. Looking forward to hearing from you. Best regards, Md Toriqul Islam
$15 AUD in 40 days
4.4
4.4

Hello I just reviewed your need for a Senior Integration Developer skilled in Apache Camel, Groovy/Java, Spring Boot, and Azure integration patterns, and it aligns perfectly with my experience. Designing scalable, secure microservices and deploying them on Azure Container Apps is exactly what I specialize in. With over 10 years in integration development, I’ve built robust API gateways and containerized solutions using Java and Spring Boot, while ensuring high test coverage with JUnit 5. I’m comfortable managing Azure resources like Service Bus, Key Vault, and APIM to deliver secure, maintainable services. I also mentor teams to uphold best practices and streamline CI/CD pipelines. Could you share more about your current architecture or specific integration challenges you’re facing? Best regards, AbdulHamid
$20 AUD in 40 days
4.4
4.4

I've built and deployed 10+ enterprise integration solutions using Apache Camel, Spring Boot, and Azure services, so this is right in my wheelhouse. I'll start with Azure landing zone setup, then implement Camel routes for Service Bus, APIM, and Cosmos DB integrations, containerize services with Azure Container Apps, and write JUnit 5 tests for validation. Groovy will handle mediation logic, while Spring Boot microservices expose REST APIs behind API Gateway. I'll configure Key Vault for secrets, set up CI/CD pipelines in Azure DevOps, and ensure compliance through Azure Policy. Security, logging, and performance tuning are standard in my workflow. I can start immediately. Thanks, Andrii.
$20 AUD in 40 days
4.1
4.1

Hi, I’m an experienced Senior Developer with strong expertise in Java, Spring Boot, microservices, and enterprise integrations. I can help build and maintain scalable integration services using Apache Camel, Groovy, REST APIs, and Azure services. I’m experienced with Docker, Azure deployments, CI/CD, databases, and cloud-native application architecture. I can also implement reliable messaging and API integrations using Azure Service Bus, APIM, Key Vault, and related services. I follow clean coding and testing practices with JUnit 5 to ensure stable and maintainable solutions. I’m comfortable troubleshooting complex integration issues and improving application performance and reliability. I can work closely with your technical and business teams to understand requirements and deliver practical solutions. I’m also comfortable working in Agile environments and supporting existing applications as well as new features. I’d be happy to contribute to your team throughout the 6–12 month contract.
$20 AUD in 40 days
4.1
4.1

Hi, I am a senior integration developer with 8 years of rich experience in software development, with a background in backend, API, and cloud integration systems. I am familiar with Java, Groovy, Apache Camel, Spring Boot, REST APIs, microservices, JUnit 5, Azure Service Bus, APIM, Key Vault, Azure SQL, Cosmos DB, Docker, Azure Container Apps, ACR, and CI/CD. For this role, I can work on Apache Camel routing and Spring Boot microservices, build and maintain secure integration APIs, and deploy containerized services through Azure. I can also handle JUnit-based testing, integration troubleshooting, SQL/database work, CI/CD, and production reliability while keeping the services modular and maintainable. I'm an individual freelancer and can work in any time zone you want. Please contact me with the best time for you to have a quick chat. Looking forward to discussing more details. Thanks. Emile.
$25 AUD in 40 days
4.2
4.2

❤️❤️❤️ Greetings ❤️❤️❤️ I have carefully reviewed your Senior Integration Developer project and understand that you need an experienced developer who can design, implement, troubleshoot, and maintain reliable integrations between enterprise systems and APIs. I am Ozgur Ozbas, a Full-Stack Developer with 10+ years of experience in Node.js, Laravel, PHP, REST/SOAP APIs, database systems, authentication, third-party integrations, and production backend applications. I have extensive experience connecting different systems through APIs, handling authentication, transforming request/response payloads, implementing business rules, processing webhooks, and maintaining reliable data synchronization between services. For your Azure-based integration environment, I can work with the existing architecture and help implement or extend integration workflows, API endpoints, error handling, logging, security, and deployment processes. I also focus on making integrations maintainable by separating business logic, provider-specific code, and configuration. Q1. Which Azure integration services are currently being used (Logic Apps, API Management, Service Bus, Functions, Data Factory, or others)? Q2. Are the integrations primarily REST/JSON APIs, or do you also need SOAP, SFTP, queues, or database-based integrations?
$20 AUD in 40 days
3.8
3.8

Hello. I'm Davide, I'm here to help you. I understand you need a senior integration developer for Azure-based microservices and enterprise routing. I'll build the integration layer with Spring Boot microservices and Apache Camel routes for mediation, transformation, and error handling, then expose stable APIs behind Azure APIM. Containerized services will run in Azure Container Apps with images stored in Azure Container Registry, and secrets will stay in Key Vault. JUnit 5 will cover unit and integration paths, with SQL-backed tests for critical workflows and CI/CD pipelines for repeatable deployments. I’ll also trace failures through structured logs and isolate routing issues quickly. Which Azure integrations are already in place: Service Bus, APIM, Key Vault, or Data Factory? I can start immediately and you can get good results within 21 days. Looking forward to hearing from you. Best regards, Davide
$25 AUD in 40 days
3.4
3.4

With over a decade of experience in integration development, I am confident that I have the expertise and technical proficiency you need for your Senior Integration Developer role. My solid background in Apache Camel, Spring Boot, Groovy/Java, and other relevant technologies will enable me to design scalable and secure integration solutions, as well as develop maintainable microservices and APIs. On top of this, my familiarity with Azure components is extensive, including deploying and managing applications on Azure using services like Container Apps and Container Registry. Moreover, I bring a results-driven approach to every project with strong problem-solving skills. My experience extends to writing robust unit and integration tests using Junit 5, optimizing performance and scalability of services, adhering to security standards, and mentoring junior developers. I have a proven ability to translate requirements into efficient technical solutions; an attribute that will be invaluable in effectively troubleshooting complex integration issues. Lastly, while my experience isn't limited strictly to Java technologies, I have developed Cloud-native Architecture API Gateway using Docker for Microservices in the past - a skillset that aligns nicely with your project requirements. Choosing me would mean selecting an experienced professional who is dedicated to delivering high-quality code on time and also adept at exceeding client expectations.
$20 AUD in 40 days
3.5
3.5

Hi, I’m a senior full-stack developer with strong experience building enterprise Java/Spring Boot microservices, REST APIs, and cloud-based integrations. I can work comfortably with Apache Camel, Groovy, Azure services, Docker, CI/CD, and JUnit 5, including designing reliable integration flows and troubleshooting production issues. For this role, I’d focus on clean integration patterns, secure Azure deployment, proper testing, and maintainable services that can scale with the business. I’m also comfortable working with SQL databases, API gateways, Azure Service Bus, Key Vault, Container Apps, and Container Registry. I’m available for a long-term engagement and can adapt to your existing architecture, development standards, and Agile workflow. Best regards, Abel
$15 AUD in 40 days
2.9
2.9

Hello, I have just read your job description carefully. I’m a senior full-stack developer with 9+ years of experience building APIs, microservices, integrations, and cloud applications using Java, Spring Boot, Docker, SQL, and Azure services. I have worked with containerized applications, CI/CD pipelines, REST APIs, databases, and event-driven integrations, and I’m comfortable troubleshooting complex integration issues across distributed systems. I can contribute to both implementation and technical problem solving while keeping the code maintainable and well tested. One technical question is whether your existing integration layer already uses Apache Camel routes in production, or would the engagement also involve designing the Camel architecture from the beginning? I look forward to hearing from you, Lautaro
$20 AUD in 40 days
2.6
2.6

Hello there, I am excited to submit my proposal for the Senior Integration Developer position with your Australian company. With over 10 years of experience in integration development, a strong proficiency in Apache Camel, Groovy/Java, Spring Boot, and extensive knowledge of Azure Integration Patterns, I am confident in my ability to contribute effectively to your enterprise integration solutions. My approach involves designing and implementing integration solutions using Apache Camel and Spring Boot, developing microservices and APIs with Groovy/Java, and deploying containerized applications using Azure Container Apps and Azure Container Registry. I prioritize writing robust unit and integration tests using JUnit 5 for code quality and reliability, while also ensuring adherence to security and compliance standards. I have a solid understanding of Azure Patterns, Java microservice development, Spring Boot framework, and experience with CI/CD pipelines and DevOps practices. Additionally, my communication skills and problem-solving abilities enable me to collaborate with cross-functional teams, troubleshoot complex integration issues, and provide mentorship to junior developers. I am eager to bring my expertise to your team and help drive the success of your integration projects. I look forward to the opportunity to discuss how my skills and experience align with your requirements in more detail. Ihsan Faridi
$20 AUD in 40 days
2.6
2.6

Sydney, Australia
Member since Aug 11, 2026
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