Senior Software Engineer II
Mastercard•O'fallon, MO
•$115,000 - $184,000•Onsite
About The Position
As a Senior Data Engineer, you’ll take ownership of building and optimizing data platforms, pipelines, and systems that enable advanced analytics, machine learning, and business insights. You’ll collaborate closely with engineering, product, and analytics teams to deliver reliable, production-ready data solutions.
Requirements
- Experience designing and building scalable systems using modern Data Engineering principles
- Strong experience with Distributed Data Processing and large-scale data platforms
- Hands-on experience with Data Integration, Data Modeling, and Data Processing
- Experience building and maintaining Data Lakes and modern data architectures
- Solid understanding of Database Design and data optimization techniques
- Knowledge of Workflow Orchestration tools and end-to-end pipeline automation
- Strong understanding of Data Security and data governance practices
- Proven ability to work independently on complex technical challenges
- Strong troubleshooting and root cause analysis skills in data environments
- Experience working in Agile/Scrum environments and collaborating across teams
- Strong communication and collaboration skills, with the ability to influence decisions
- Experience mentoring or supporting other engineers
- Bachelor’s degree or equivalent experience
Nice To Haves
- Experience with cloud platforms (AWS, Azure, or GCP) and modern data tooling
- Experience with event-driven or streaming architectures
- Exposure to machine learning or advanced analytics environments
- Experience in high-throughput or regulated environments (payments, banking, fintech)
Responsibilities
- Design, build, and maintain scalable data platforms leveraging Data Engineering best practices
- Develop and optimize large-scale data pipelines using Distributed Data Processing frameworks
- Implement and manage automated workflows using Workflow Orchestration to ensure reliable data movement and processing
- Design and integrate data from multiple sources using Data Integration techniques to create a unified, accessible data layer
- Build and maintain scalable Data Lakes for storing and analyzing large, diverse datasets
- Define and implement robust Data Modeling strategies to support analytics and reporting use cases
- Design and optimize Database Design solutions to ensure performance, scalability, and data integrity
- Process and transform large datasets using efficient Data Processing techniques to generate actionable insights
- Ensure strong Data Security practices, including data protection, governance, and compliance
- Lead system design discussions and contribute to architectural decisions
- Own full SDLC delivery including requirements, design, development, testing, and deployment
- Troubleshoot and resolve production issues through structured root cause analysis
- Drive improvements in performance, scalability, and reliability of data systems
- Collaborate across teams to align data solutions with business needs
- Mentor team members and contribute to knowledge sharing and technical development
Benefits
- insurance (including medical, prescription drug, dental, vision, disability, life insurance)
- flexible spending account and health savings account
- 16 weeks of new parent leave
- up to 20 days of bereavement leave
- 80 hours of Paid Sick and Safe Time
- 25 days of vacation time
- 5 personal days
- 10 annual paid U.S. observed holidays
- 401k with a best-in-class company match
- deferred compensation for eligible roles
- fitness reimbursement or on-site fitness facilities
- eligibility for tuition reimbursement
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What This Job Offers
Job Type
Full-time
Career Level
Senior
