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Primary Talent Partners

Senior Java Developer

On site

Missouri, United states

$ 77 /hour

Senior

Freelance

03-02-2026

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Skills

Communication Python Java JavaScript PHP Go Perl Apache Kafka Encryption CI/CD Docker Kubernetes Jenkins Ansible Test Architecture Software Architecture Linux Virtualization apache Organization Agile SDLC Microservice Junit Spring Spring Boot CI/CD Pipelines Kafka gRPC

Job Specifications


Primary Talent Partners has a new contract opening for a Senior Java Developer with our global technology client in O Fallon, MO. This is a 24-month contract with a potential for extension.

Pay: $67.00 - $77.00/hr; W2 contract, no PTO, no Benefits. ACA-compliant supplemental package available for enrollment. Candidates must be legally authorized to work in the United States and must be able to sit on Primary Talent Partners W2 without sponsorship.

Description:
Providing Innovative, Secure, and Reliable Switching Solutions is the lifeblood of Client Core Products, we are currently seeking a passionate, collaborative, and experienced software engineer to join the Payment Networks Team.
Are you a collaborator capable of communicating effectively with Business and IT stakeholders across all organizational levels?
Are you an innovator who embraces, adopts, and studies the latest technology to solve challenging business problems?
Are you a leader who inspires the team to think "out of the box” and effectively communicates across all levels of the organization?
If this describes you, Client wants to talk to you about the creation of our new agile development team that will support Direct Services Access work within our program.
About the Role:
Ensure quality of one or more application codebases and alignment with development standards.
Provides input into design of automation for full infrastructure deployment; manages review of and tests for compatibility and integration processes needed to connect with other devices
Automates large scale systems spanning multiple locations and environments.
Writes code automating public cloud, private cloud, and bare metal.
Automates common tasks, deploy with an IaaS model, utilizing chef, ansible, or similar
Ability to write moderately complex scripts and programs for automation, tools, frameworks,
dashboards, alarms. (common uses: Python, Perl, PHP, JavaScript, Go).
Orchestrates the deployment/maintenance of complex applications.
Responsible for performance engineering of the enterprise software architecture.
Significant code development, commitment of code/review of pull-requests, and modest day-to-day
support duties.

About You:
Engineering experience, preferably in high volume, low latency transaction processing systems (such as payments
transaction switching, high frequency trading systems or global real-time event streaming systems etc.)
Experience in CI/CD pipeline creation via Jenkins.
Delivered scalable products through a CI/CD pipeline deploying on-prem or in a public cloud infrastructure.
Ensure quality across the full stack via rigorous CI/CD practices in all aspects of the SDLC (Builds, Test, and
Deploy).
Strong writing and verbal communication skills
Preferred Skills:
Extensive knowledge and experience with Java, Spring Boot, gRPC
Good knowledge in creation and working with CI/CD pipelines using Jenkins
Experienced in event driven systems (ActiveMQ, Apache Kafka, NATS, etc)
Experience in financial system encryption (PIN Blocks, CHIP, CVC) would be beneficial
Experience with testing frameworks and methodologies (JUnit, Blazemeter, mocking, etc.)
Experienced in building platforms with Microservice architecture and RESTful APIs.
Experience using cloud-native approaches running on Linux, leveraging Spring Boot
Exposure to symmetric cryptography would be desired. Experience with HSM's (Thales, AEP) is desired
Experience with virtualization like Cloud Foundry (PCF), Kubernetes (PKS), Docker etc.

Education:
BS or MS in Computer Science or associated field

Primary Talent Partners is an Equal Opportunity / Affirmative Action employer committed to diversity in the workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, age, national origin, disability, protected veteran status, gender identity, or any other factor protected by applicable federal, state, or local laws.

If you are a person with a disability needing assistance with the application or at any point in the hiring process, please contact us at info@primarytalentpartners.com

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About the Company

Primary Talent Partners (PTP) is a woman-owned staffing firm specializing in contingent workforce programs and full-service staffing solutions, including temporary and direct hire services. Established in 2019, our Executive Partners bring over two decades of experience in staffing and consulting. Headquartered near Charlotte, North Carolina, with satellite locations nationwide, we serve a diverse portfolio of Fortune 500 clients. As a trusted supplier for Managed Service Providers (MSPs) and structured workforce programs, w... Know more