{"schemaVersion":"jobsearcher.job.v1","id":"f87807749dfeeebf7b7c2701","url":"https://jobsearcher.com/jobs/f87807749dfeeebf7b7c2701","canonicalUrl":"https://jobsearcher.com/jobs/f87807749dfeeebf7b7c2701","title":"Java Backend Developer","description":"*Job Title:* Java Backend Developer\n*Location:* Phoenix (Onsite – In-Person)\n*Interview Process:* One-Shot In-Person Interview Only\n*Experience Required:* 5–7 Years\n*Employment Type:* Full-Time / Contract\n*Work Authorization:* Open to all work-authorized candidates (No visa restrictions)*Job Description*We are seeking an experienced *Java Backend Developer* to join our team supporting a strategic initiative for *our Client* in Phoenix, AZ. The ideal candidate will have strong expertise in backend development, API architecture, and payment gateway integrations. Candidates with experience in *Kotlin* and/or *Go (Golang)* are highly preferred.This role requires a hands-on engineer who can design, build, and support scalable, secure, and high-performance backend services in a modern microservices environment.*Key Responsibilities*\n\n* Design, develop, and maintain scalable backend applications using Java.\n* Build and enhance RESTful APIs and microservices for enterprise-grade applications.\n* Develop and support integrations with payment processing and payment gateway platforms.\n* Work extensively with API Gateway technologies to manage, secure, and monitor APIs.\n* Collaborate with architects, product owners, and cross-functional teams to deliver high-quality solutions.\n* Implement secure coding practices and ensure compliance with enterprise security standards.\n* Troubleshoot production issues and optimize application performance.\n* Participate in code reviews, technical design discussions, and architecture decisions.\n* Contribute to CI/CD pipelines and DevOps best practices.\n\n*Required Qualifications*\n\n* 5–7 years of hands-on experience in Java backend development.\n* Strong experience with Java, Spring Boot, and Microservices architecture.\n* Solid experience designing and developing REST APIs.\n* Hands-on experience with API Gateway platforms (Apigee, Kong, AWS API Gateway, MuleSoft, or similar).\n* Proven experience working with Payment Gateway integrations and payment processing systems.\n* Strong understanding of distributed systems, event-driven architecture, and backend design patterns.\n* Experience with relational and NoSQL databases.\n* Familiarity with cloud environments and containerization technologies.\n* Strong problem-solving and communication skills.\n\n*Preferred Qualifications*\n\n* Experience with *Kotlin* development.\n* Experience with *Go (Golang)* development.\n* Prior experience in financial services, fintech, payment processing, or banking domains.\n* Experience with messaging technologies such as Kafka or RabbitMQ.\n* Knowledge of OAuth2, JWT, API security, and authentication frameworks.\n\n*Technical SkillsMust Have:*\n\n* Java\n* Spring Boot\n* Microservices\n* REST APIs\n* API Gateway\n* Payment Gateway Integration\n* SQL/NoSQL Databases\n* Git\n\n*Nice to Have:*\n\n* Kotlin\n* Go (Golang)\n* Kafka\n* Docker\n* Kubernetes\n* Cloud Platforms (AWS/Azure/GCP)\n\n*Additional Information*\n\n* *Location:* Phoenix, AZ (100% Onsite)\n* *Interview:* One-shot In-Person Interview (No virtual option)\n* *Experience:* 5–7 Years\n\n*Priority Skills:* API Gateway, Payment Gateway Experience, Kotlin, Go (Golang), Java Backend Development.\n\nPay: From $40.00 per hour\n\nWork Location: In person","company":"Connectedxinc","rawCompany":"connectedxinc","city":"Phoenix","state":"AZ","isRemote":false,"isActive":false,"createdAt":"2026-08-19T19:26:37.158Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Java Backend Developer","description":"*Job Title:* Java Backend Developer\n*Location:* Phoenix (Onsite – In-Person)\n*Interview Process:* One-Shot In-Person Interview Only\n*Experience Required:* 5–7 Years\n*Employment Type:* Full-Time / Contract\n*Work Authorization:* Open to all work-authorized candidates (No visa restrictions)*Job Description*We are seeking an experienced *Java Backend Developer* to join our team supporting a strategic initiative for *our Client* in Phoenix, AZ. The ideal candidate will have strong expertise in backend development, API architecture, and payment gateway integrations. Candidates with experience in *Kotlin* and/or *Go (Golang)* are highly preferred.This role requires a hands-on engineer who can design, build, and support scalable, secure, and high-performance backend services in a modern microservices environment.*Key Responsibilities*\n\n* Design, develop, and maintain scalable backend applications using Java.\n* Build and enhance RESTful APIs and microservices for enterprise-grade applications.\n* Develop and support integrations with payment processing and payment gateway platforms.\n* Work extensively with API Gateway technologies to manage, secure, and monitor APIs.\n* Collaborate with architects, product owners, and cross-functional teams to deliver high-quality solutions.\n* Implement secure coding practices and ensure compliance with enterprise security standards.\n* Troubleshoot production issues and optimize application performance.\n* Participate in code reviews, technical design discussions, and architecture decisions.\n* Contribute to CI/CD pipelines and DevOps best practices.\n\n*Required Qualifications*\n\n* 5–7 years of hands-on experience in Java backend development.\n* Strong experience with Java, Spring Boot, and Microservices architecture.\n* Solid experience designing and developing REST APIs.\n* Hands-on experience with API Gateway platforms (Apigee, Kong, AWS API Gateway, MuleSoft, or similar).\n* Proven experience working with Payment Gateway integrations and payment processing systems.\n* Strong understanding of distributed systems, event-driven architecture, and backend design patterns.\n* Experience with relational and NoSQL databases.\n* Familiarity with cloud environments and containerization technologies.\n* Strong problem-solving and communication skills.\n\n*Preferred Qualifications*\n\n* Experience with *Kotlin* development.\n* Experience with *Go (Golang)* development.\n* Prior experience in financial services, fintech, payment processing, or banking domains.\n* Experience with messaging technologies such as Kafka or RabbitMQ.\n* Knowledge of OAuth2, JWT, API security, and authentication frameworks.\n\n*Technical SkillsMust Have:*\n\n* Java\n* Spring Boot\n* Microservices\n* REST APIs\n* API Gateway\n* Payment Gateway Integration\n* SQL/NoSQL Databases\n* Git\n\n*Nice to Have:*\n\n* Kotlin\n* Go (Golang)\n* Kafka\n* Docker\n* Kubernetes\n* Cloud Platforms (AWS/Azure/GCP)\n\n*Additional Information*\n\n* *Location:* Phoenix, AZ (100% Onsite)\n* *Interview:* One-shot In-Person Interview (No virtual option)\n* *Experience:* 5–7 Years\n\n*Priority Skills:* API Gateway, Payment Gateway Experience, Kotlin, Go (Golang), Java Backend Development.\n\nPay: From $40.00 per hour\n\nWork Location: In person","datePosted":"2026-08-19T19:26:37.158Z","dateModified":"2026-08-19T19:26:37.158Z","hiringOrganization":{"@type":"Organization","name":"Connectedxinc","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Phoenix","addressRegion":"AZ","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"f87807749dfeeebf7b7c2701"},"url":"https://jobsearcher.com/jobs/f87807749dfeeebf7b7c2701"}}