Quick Summary
This is a 13-month W2 hybrid Senior Software Engineer role in O Fallon, MO, focused on payment networks, requiring expert Java, Spring Boot, gRPC, and Event Driven Architecture experience. Candidates must have extensive knowledge of CI/CD pipeline creation via Jenkins, experience delivering scalable products through CI/CD, and engineering experience in high-volume, low-latency transaction processing systems. Responsibilities include ensuring application quality, designing and automating full infrastructure deployment across public/private cloud and bare metal, writing automation scripts in Python, Perl, PHP, JavaScript, or Go, orchestrating complex application deployments, and performance engineering. A Bachelor's Degree in a technical field is preferred, and a Glider Test is required.
Senior Software Engineer
Location: O Fallon, MO (Hybrid)
Duration: 13 Months (W2)
Industry: Payments
A Glider Test is required for this role. Please send your submittal with the candidate's email, and we will directly send the Glider test if qualified.
Preferred Education:
- Bachelor's Degree in a technical-related field
Required Skills, Experience, & Abilities:
- Expert level of Java, Spring Boot
- Event Driven Architecture experience
- gRPC experience
- Extensive knowledge and experience with Java, Spring Boot, gRPC
- Ability to understand larger upstream/downstream data flows
- Ability to communicate technical and data mapping details effectively in larger forums with people inside and outside our group
- Engineering experience, preferably in high volume, low latency transaction processing systems (e.g., payments transaction switching, high frequency trading systems, global real-time event streaming systems)
- 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
Desired Skills:
- Good knowledge in creation and working with CI/CD pipelines using Jenkins
- Experienced in event driven systems (ActiveMQ, Apache Kafka, NATS)
- Experience in financial system encryption (PIN Blocks, CHIP, CVC)
- Experience with testing frameworks and methodologies (Gtest, JUnit, BlazeMeter, mocking)
- 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
- Experience with virtualization (Cloud Foundry (PCF), Kubernetes (EKS), Docker)
Role Overview:
Providing Innovative, Secure, and Reliable Switching Solutions is the lifeblood of the client's Core Products. We are currently seeking a passionate, collaborative, and experienced software engineer to join the Payment Networks Team.
Responsibilities:
- Ensure quality of one or more application codebases and alignment with development standards
- Provide input into design of automation for full infrastructure deployment; manage review of and tests for compatibility and integration processes needed to connect with other devices
- Automate large scale systems spanning multiple locations and environments
- Write code automating public cloud, private cloud, and bare metal
- Automate common tasks, deploy with an IaaS model, utilizing Chef, Ansible, or similar
- Write moderately complex scripts and programs for automation, tools, frameworks, dashboards, and alarms (common uses: Python, Perl, PHP, JavaScript, Go)
- Orchestrate the deployment and 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
For applications and inquiries, contact: [email protected]

