Sr. Automation Eng. (API) x 2

- Automation Engineer (API) x 2

Hybrid onsite in Minneapolis or St Louis MO

12 month contract +

Position Overview

Client is seeking a Senior API Automation Engineer to lead the development and maintenance of scalable, high-quality API test suites across our digital platforms. This role will focus on contract testing, security validation, and backend integration for Embedded Finance APIs, internal services, and mainframe systems. The ideal candidate will possess deep technical expertise, strong collaboration skills, and a passion for quality engineering.

Key Responsibilities

• Design, develop, and maintain automated API test suites using Karate, RESTinstance, and RestAssured
• Lead efforts in contract testing, security validation, and integration testing across service layers
• Validate backend processes and business rules for systems such as SOR, Domains, and Read Store using SSHLibrary and CLI wrappers (Python/Java)
• Collaborate with developers, architects, and QA leads to ensure testable service contracts and early defect detection
• Integrate API automation into CI/CD pipelines (Jenkins, GitHub Actions, Azure DevOps) and ensure test reliability
• Mentor junior and mid-level engineers, contribute to reusable test libraries, and promote best practices
• Participate in sprint ceremonies, quality governance reviews, and continuous improvement initiatives

Required Experience

• 5-7 years of experience in test automation, with a strong focus on API and backend testing
• Proven expertise in API contract testing, service mocking, and backend data validation
• Hands-on experience with Karate (preferred), RESTinstance, and RestAssured
• Familiarity with mainframe systems and secure CLI-based validation is a plus
• Experience working in Agile/Scrum environments with cross-functional teams
• Financial services or regulated industry experience preferred

Tooling Expertise

• API Automation: Karate (primary), RESTinstance (Robot Framework), RestAssured (Java-based legacy support)
• Backend Automation: SSHLibrary, CLI wrappers (Python/Java)
• CI/CD Integration: Jenkins, GitHub Actions, Azure DevOps
• Test Data Management: TDP (Test Data Portal)
• Reporting: Robot Framework logs, Allure, ReportPortal, Power BI dashboards

Soft Skills & Leadership

• Strong analytical and debugging skills with a quality-first mindset
• Effective communicator and collaborator across distributed teams
• Ability to mentor and support junior team members
• Comfortable leading innovation pilots and driving continuous improvement

Technology Stack Overview
Category Technology / Tool Purpose / Usage Category Technology / Tool Purpose / Usage Orchestration Robot Framework Centralized test execution, reporting, CI/CD integration CI/CD Integration Jenkins, GitHub Actions, Azure DevOps Continuous integration and deployment pipelines UI Automation Playwright (Java) Cross-browser testing, visual validation, accessibility testing API Automation Karate, RESTinstance, RestAssured API contract validation, security, performance testing Backend Automation Automation Anywhere, IBM HATS CLI Wrappers Secure shell access, batch job execution, backend validation Mobile Automation Appium via Robot Framework Native iOS/Android testing, biometric simulation, device farm integration Test Data Management TDP, Synthetic Fallback Pools Data provisioning, conditioning, and backup data for test execution Environment Management Service Virtualization, Dynamic Switching Flexible and isolated test execution environments Reporting & Observability Allure, ReportPortal, Robot Framework logs Dashboards, tracebacks, screenshots, alerts, traceability Test Case Management TestRail, Zephyr (planned) Requirement traceability, test case and automation coverage Data Modeling YAML / JSON Metadata-driven test suite generation and execution modeling


Required Skills :

Basic Qualification :

Additional Skills :


Background Check : Yes


Drug Screen : No


Notes :
Selling points for candidate :
Project Verification Info :The information provided below is for Apex Systems AV use only and is not to be distributed publicly, or to any third party. Any distribution of the below information will result in corrective action from Apex Systems Vendor Management. MSA: Restricted Client Letter: Will Provide
Exclusive to Apex :Yes
Face to face interview required :No
Candidate must be local :No
Candidate must be authorized to work without sponsorship ::No
Interview times set :Yes
Type of project :
Master Job Title :
Branch Code :