Contract Java Developer Jobs in Nebraska (NOW HIRING)

POC: Sam Chavez
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Job Title: Consultant | HTML,CSS,Javascript,Jquery,PHP,Drupal | HTML5,CSS3,AngularJS - Java Backend Developer
Work Location & Reporting Address: St Louis, MO (Onsite-Hybrid. Open to candidates who's willing to relocate to client's location)
Contract duration: 12
MAX VENDOR RATE: XXX per hour max
Target Start Date: 23 Jun 2026
Does this position require Visa independent candidates only? Yes
Must Have Skills:
• Must be high-energy, detail-oriented, proactive and can function under pressure in an independent environment
• Possesses strong communication skills -- both verbal and written - and strong relationship, collaborative skills and organizational skills
• Must provide the necessary skills to have a high degree of initiative and self-motivation to drive results.
• Willingness and ability to learn and take on challenging opportunities and to work as a member of matrix based on diverse and geographically distributed project team.
• Ensure end-to-end visibility and continuous monitoring of application, Oracle, and Redis performance using Open Telemetry and Dynatrace aligned to SLAs.
• Design systems for high availability with retries, circuit breakers, graceful degradation, and recoverability across APIs and batch jobs.
• Enable standardized logging, proactive alerting, and continuous profiling to detect issues early and optimize performance and scalability.
• Ensure secure configuration with encryption, secrets management, and compliance with enterprise standards for data protection.
• Design for scalability and cloud/platform readiness (e.g., PCF) with auto-scaling and efficient resource utilization.
• Strong experience in cryptography and API security, including AES/RSA encryption, TLS/PKI, secure key management (HSM/Azure Key Vault), and authentication mechanisms such as OAuth2, JWT, and mTLS.
Advanced experience with the following:
• Java
• Spring Boot / Spring Batch
• Object-Oriented Design and Design Patterns
• Microservices Architecture
• RESTful APIs, Web Services, JSON
• Apache (Tomcat/HTTP)
• PCF / Azure Cloud Platforms
• Docker / Containerization
• Oracle, Redis
• Kafka / Messaging
• Spring Cloud (Gateway, Config)
• Resilience4j (Retry, Circuit Breaker)
• Open Telemetry, Dynatrace, Micrometer
• Log4j / Splunk
• JUnit, Mockito, Karate, Testing Frameworks
• Maven / CI-CD Tools (Jenkins, GitHub)
• Angular / Frontend frameworks
• Agile Development Practice
Nice to Have Skills:
Detailed Job Description:
• Responsible for the analysis, design, development and delivery of software solutions.
• Develop, customize, and test applications to integrate to Mastercard's specifications
Role
• 3 to 8 years of experience in delivering secure solutions in Financial Services Sector or related field.
• Accountable for systems development prioritized initiatives supporting Mastercard Send
• Plan, design and develop technical solutions and alternatives to meet business requirements in adherence with Mastercard standards, processes and best practices.
• Adapt to the technical artifact templates per the needs of the project and technology.
• Hands on full stack developer with day-to-day system development and maintenance activities to meet service level agreements (SLAs) and create solutions with high level of innovation, cost effectiveness, high quality and faster time to market.
• Perform and contribute to test strategy/test design, performance benchmarking, release rollout and deployment plans and contingency/back-out plans.
• Contribute ideas to help ensure that required standards and processes are in place and followed.
• Research and evaluate assigned work to deliver solutions.
Minimum Years of Experience:
• 3 to 8+ years
Certifications Needed:
Top 3 responsibilities you would expect the Subcon to shoulder and execute:
Interview Process (Is face to face required?)
• Virtual and Face-to-Face if needed
Any additional information you would like to share about the project specs/nature of work:
Project Code: CNPF Exponential Engineering