Demo

Senior Software Engineer

w3r Consulting
Fallon, MO Contractor
POSTED ON 4/23/2026
AVAILABLE BEFORE 5/23/2026

Job title: Senior Software Engineer

Location: O Fallon, MO

Duration: 12 months

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 (Gtest, 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 virtualization like Cloud Foundry (PCF), Kubernetes (EKS), Docker etc.

Hourly Wage Estimation for Senior Software Engineer in Fallon, MO
$54.00 to $65.00
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