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Contract Kotlin Multiplatform Developer Jobs in Arizona

Java Developer

Phoenix, AZ · On-site

$50.75 - $65.50/hr

... Full-Time / Contract Work Authorization: Open to all work-authorized candidates (No visa ... Candidates with experience in Kotlin and/or Go (Golang) are highly preferred. This role requires a ...

Java Engineer

Phoenix, AZ

$51.50 - $70.50/hr

Ongoing Contract Duties: * Design, develop, test, and maintain scalable Java applications and ... Develop and maintain applications using Kotlin as needed. * Work with PostgreSQL/Postgres databases ...

Java Engineer

Phoenix, AZ

$51.50 - $70.50/hr

Ongoing Contract Duties: * Design, develop, test, and maintain scalable Java applications and ... Develop and maintain applications using Kotlin as needed. * Work with PostgreSQL/Postgres databases ...

Java Engineer

Phoenix, AZ · On-site

$51.50 - $70.50/hr

Ongoing Contract Duties: * Design, develop, test, and maintain scalable Java applications and ... Kotlin * PostgreSQL / Postgres * Strong object-oriented programming and software development skills

Java Engineer

Phoenix, AZ · On-site

$90 - $130/hr

Ongoing Contract Duties * Design, develop, test, and maintain scalable Java applications and ... Kotlin * PostgreSQL / Postgres * Strong object-oriented programming and software development skills

New

Java Engineer

Phoenix, AZ · On-site

$51.50 - $70.50/hr

Ongoing Contract Duties: * Design, develop, test, and maintain scalable Java applications and ... Kotlin * PostgreSQL / Postgres * Strong object-oriented programming and software development skills

Java Backend Engineer

Phoenix, AZ · On-site

$55 - $60/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Fulltime Contract Duration: 6 months Location: Phoenix, AZ (Hybrid) In-person interview is required ... Kotlin, Java, and Eclipse. • Collaborate with product, architecture, and QA teams in an agile ...

Showing results 21-36

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Infographic showing various Contract Kotlin Multiplatform Developer job openings in Arizona as of August 2026, with employment types broken down into 80% Full Time, 5% Part Time, and 15% Contract. Highlights an 80% Physical, 5% Hybrid, and 15% Remote job distribution.

$50.75 - $65.50/hr

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Re-posted 25 days ago


Job description

Who we are:    
ConnectedX is focused on Digital Transformation and Product Engineering Services, enabling clients achieve their business, operating and technology needs for the digital age. Our unique industry-based, consultative approach helps clients implement digital transformation initiatives. Headquartered in Dallas, Texas, U.S. ConnectedX is a preferred partner for leading Fortune 1000 enterprises and is consistently admired by the clients and employees across the globe.  
Job Title: Java Backend Developer
Location: Phoenix (Onsite – In-Person)
Interview Process: One-Shot In-Person Interview Only
Experience Required: 5–7 Years
Employment Type: Full-Time / Contract
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
  • Design, develop, and maintain scalable backend applications using Java.
  • Build and enhance RESTful APIs and microservices for enterprise-grade applications.
  • Develop and support integrations with payment processing and payment gateway platforms.
  • Work extensively with API Gateway technologies to manage, secure, and monitor APIs.
  • Collaborate with architects, product owners, and cross-functional teams to deliver high-quality solutions.
  • Implement secure coding practices and ensure compliance with enterprise security standards.
  • Troubleshoot production issues and optimize application performance.
  • Participate in code reviews, technical design discussions, and architecture decisions.
  • Contribute to CI/CD pipelines and DevOps best practices.
Required Qualifications
  • 5–7 years of hands-on experience in Java backend development.
  • Strong experience with Java, Spring Boot, and Microservices architecture.
  • Solid experience designing and developing REST APIs.
  • Hands-on experience with API Gateway platforms (Apigee, Kong, AWS API Gateway, MuleSoft, or similar).
  • Proven experience working with Payment Gateway integrations and payment processing systems.
  • Strong understanding of distributed systems, event-driven architecture, and backend design patterns.
  • Experience with relational and NoSQL databases.
  • Familiarity with cloud environments and containerization technologies.
  • Strong problem-solving and communication skills.
Preferred Qualifications
  • Experience with Kotlin development.
  • Experience with Go (Golang) development.
  • Prior experience in financial services, fintech, payment processing, or banking domains.
  • Experience with messaging technologies such as Kafka or RabbitMQ.
  • Knowledge of OAuth2, JWT, API security, and authentication frameworks.
Technical Skills
Must Have:
  • Java
  • Spring Boot
  • Microservices
  • REST APIs
  • API Gateway
  • Payment Gateway Integration
  • SQL/NoSQL Databases
  • Git
Nice to Have:
  • Kotlin
  • Go (Golang)
  • Kafka
  • Docker
  • Kubernetes
  • Cloud Platforms (AWS/Azure/Google Cloud Platform)
Additional Information
  • Location: Phoenix, AZ (100% Onsite)
  • Interview: One-shot In-Person Interview (No virtual option)
  • Experience: 5–7 Years
Priority Skills: API Gateway, Payment Gateway Experience, Kotlin, Go (Golang), Java Backend Development.