Principal Software Engineer

Company	Mastercard
Location	O’Fallon, MO, USA
Salary	$165000 – $264000
Type	Full-Time
Degrees	Bachelor’s
Experience Level	Senior, Expert or higher

Requirements

Strong hands-on experience with Spring Boot and the Java tech stack.
Expertise in RESTful services, microservices, and cloud-native development.
Deep understanding of software design patterns, clean code principles, and best practices in software engineering.
Proven experience designing, developing, and deploying microservices architectures.
Strong familiarity with cloud platforms like AWS, Azure, or Google Cloud.
Solid understanding of test-driven development (TDD), automated testing, and continuous integration/deployment pipelines.
Experience with relational and NoSQL databases, including schema design, querying, and optimization.
Previous experience mentoring junior and mid-level engineers and leading engineering teams.
Experience working in agile development teams, including Scrum or Kanban.
Knowledge of front-end frameworks like ReactJS to better collaborate with front-end teams.
Experience with Big Data frameworks such as Snowflake, Hadoop, Spark, or Kafka.
Familiarity with Docker, Kubernetes, and container orchestration tools.
Familiarity with AI/ML models and into backend systems.
Strong understanding of Agile methodologies, with the ability to drive iterative delivery and cross-team collaboration.
Strong communicator with the ability to explain complex concepts to both technical and non-technical audiences, and to influence stakeholders across product, engineering, and acquisition teams.
Bachelor’s degree in Computer Science, Software Engineering, or a related field or equivalent practical experience.

Responsibilities

Own and define the architecture for high-performance, scalable applications.
Develop and maintain microservices and backend systems primarily using Java and Spring Boot.
Provide technical leadership and mentorship to engineers, helping them grow their skills and improve their craft.
Work closely with cross-functional teams, product managers, data engineers, data scientists to deliver end-to-end solutions.
Actively seek opportunities for process improvement, advocating for best practices in software development, design patterns, and testing.
Ensure high availability, scalability, resiliency, and performance of critical applications.
Explore and experiment with emerging technologies, especially related to Big Data, and Cloud.
Conduct thorough code reviews, ensuring code quality, security, and scalability.

Preferred Qualifications

No preferred qualifications provided.