Senior - SIT Engineer

Job Overview

Role Summary

The Senior System Integration Test Engineer is a senior technical leader responsible for driving system integration testing (SIT), performance engineering, and quality strategy across complex ecosystems involving applications, cloud platforms, distributed systems, databases, and device integrations.

This role combines deep technical expertise with strategic leadership, leveraging modern testing tools, AI-driven testing practices, and data validation techniques to ensure scalable, high-performing, and reliable systems.

A Day In The Life

Key Responsibilities

SIT Strategy & Leadership

• Define and implement SIT strategy, frameworks, and best practices
• Lead end-to-end system validation across APIs, applications, databases, cloud, and third-party integrations
• Provide technical leadership and direction for SIT across multiple programs
• Influence release readiness decisions and quality gates (Go/No-Go)
  
  

End-to-End System Integration

• Oversee testing of complex, distributed, multi-system integrations
• Validate:
• API orchestration and service interactions
• Event-driven systems (Kafka, messaging platforms)
• Data pipelines and workflows
• Identify, analyze, and mitigate system-level risks and integration failures
  
  

Performance Engineering & Scalability

• Lead performance engineering initiatives at enterprise scale
• Design and execute:
• Load, stress, endurance, and scalability testing
• Establish performance baselines aligned with business SLAs and KPIs
• Drive system tuning and capacity planning
  
  

AI-Driven Testing & Advanced Automation

• Lead adoption of AI/ML-driven testing techniques, including:
• Intelligent test case generation o Predictive defect detection
• Anomaly detection in system and performance metrics
• Architect self-healing and adaptive automation frameworks
• Optimize test execution using data-driven and AI-assisted insights
  
  

Automation & DevOps Integration

• Define and scale automation strategies across SIT and regression testing
• Integrate testing into CI/CD pipelines (Azure DevOps, Jenkins, GitHub Actions)
• Ensure continuous testing and shift-left quality practices Database & Data Engineering Validation
• Lead validation of large-scale data systems and pipelines
• Ensure:
• Data integrity across systems
• Accuracy of ETL and streaming pipelines
• High-volume transactional system reliability
• Optimize and validate:
• SQL queries, stored procedures
• NoSQL data consistency and performance Cloud & Distributed Systems Testing
• Drive testing strategies for cloud-native systems (Azure, AWS)
• Validate microservices and containerized applications (Docker, Kubernetes)
• Ensure reliability of distributed and event-driven architectures
  
  

Defect Management & Root Cause Analysis

• Lead complex defect triage and deep root cause analysis across systems
• Resolve cross-layer issues involving:
• Application
• Database
• Infrastructure
• Establish proactive defect prevention mechanisms
  
  

Mentorship & Technical Leadership

• Mentor and guide mid-level SIT engineers
• Act as a technical authority and escalation point
• Drive continuous improvement in:
• Testing processes
• Automation frameworks
• Tool adoption
  
  

Stakeholder & Executive Communication

• Communicate quality, performance, and risk insights to leadership
• Translate technical findings into business impact and decision-making inputs
• Lead SIT governance meetings and cross-functional coordination
  
  

What will help you thrive in this role

Required Qualifications

• Bachelor's or Master's degree in Computer Science, Engineering, or related field
• 10+ years of experience in:

• System Integration Testing (SIT)
• Performance engineering and load testing
• Automation and distributed systems testing
  

Technical Expertise

Testing & Automation Tools

• Selenium, Cypress (UI automation)
• Postman, REST Assured, Karate (API testing)
  
  

Performance Testing

• JMeter, LoadRunner, Gatling, k6
• Monitoring tools: Grafana, Dynatrace, AppDynamics
  
  

Programming / Scripting

• Strong proficiency in:

• Python, Java, C#, or JavaScript
  

Database Expertise

• Advanced SQL (query optimization, stored procedures)
• Experience with:

• Relational DBs: SQL Server, Oracle, PostgreSQL
• NoSQL: MongoDB, Cassandra
• Data pipeline validation (ETL, streaming systems)
  
  
Cloud & DevOps


• Azure, AWS
• CI/CD: Jenkins, Azure DevOps, GitHub Actions
• Containers & orchestration: Docker, Kubernetes
  
  
AI/ML (Preferred)


• Experience with:

• AI-driven testing tools
• Predictive analytics and anomaly detection
• Automation optimization using AI
  

Key Competencies

• Strategic thinking and enterprise-level problem solving
• Strong leadership and technical mentoring skills
• Expertise in complex system integration and performance engineering
• Excellent communication and stakeholder management
• Ability to drive innovation and continuous improvement
  
  

Preferred Experience

• Experience in large-scale, data-intensive systems
• Exposure to IoT, firmware, or hardware integration ecosystems
• Strong understanding of Agile, DevOps, and SRE practices
  
  

Success Metrics

• Reduction in integration defects and production issues
• Achievement of performance SLAs and scalability goals
• Increased automation coverage and efficiency
• Improved SIT cycle time and release predictability
• Adoption of AI-driven testing practices
  
  

Hubbell Incorporated

Hubbell creates critical infrastructure solutions that power our customers, communities, people and the planet. Our company is strategically aligned around enabling grid modernization and electrification. As more products plug in to an aging grid, Hubbell solutions enable the transition to a more reliable, resilient and efficient energy infrastructure. Founded in 1888 our innovation has made us a leading global manufacturer of high quality electrical and utility solutions enabling customers to operate critical infrastructure reliably and efficiently.

The company operates in two segments. Hubbell Utility Solutions (HUS) enable the grid to conduct, communicate and control energy across utility applications and Hubbell Electrical Solutions (HES) are essential to managing power across a wide range of industries and applications. Our vertical market solutions can be applied to markets including Data Centers, Renewables, Commercial Buildings, Industrial, Telecom and Transportation. Supporting both of our business segments is our corporate and Hubbell Unified Business Solutions teams that provide consistent process, tools technologies across our businesses.

We are committed to operating sustainably and ethically while promoting an inclusive and supportive culture for our people to grow and develop in their careers. Our employees proudly work and serve our communities from our headquarters in Shelton, CT, across the United States and around the globe.

Hubbell Utility Solutions

Hubbell Utility Solutions (HUS) enable the grid to conduct, communicate and control energy across utility applications. HUS provides the critical components that allow the grid to reliably transmit and distribute energy, as well as the communications and controls technologies to make the grid smarter and more flexible.

Hubbell Incorporated, its subsidiaries and affiliates, is an EO Employer AA: M/F/Veteran/Disability. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected veteran status, sexual orientation, gender identity or any other protected class.

The above summary of position responsibilities and requirements is not intended, and should not be construed, to be an exhaustive list of duties, skills, efforts, physical requirements, or working conditions associated with the position. It is intended to be an accurate reflection of those principal position elements essential for making decisions related to position performance, employee development, and compensation.