Senior Software Engineer (Java, Hadoop) in O'Fallon, MO

Description

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Title and Summary

Senior Software Engineer (Java, Hadoop) Our Purpose
We work to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. We cultivate a culture of inclusion for all employees that respects their individual strengths, views, and experiences. We believe that our differences enable us to be a better team – one that makes better decisions, drives innovation and delivers better business results.

Who is Mastercard?
Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential.

Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all.

Overview
Be part of MasterCard's Decision Management Platform, which serves as the decisioning engine for multiple business solutions to combat fraud and validate cardholder identity. Our patented Java-based platform processes billions of transactions per day in tens of milliseconds using a multi-tiered, message-oriented approach for high performance and availability.

Have you ever wanted to be a part of something BIG? Do you have experience integrating new and emerging technologies into existing environments as technologies evolve and demands change? In this role, you can make an immediate impact for a Leading Global Technology Company, MasterCard. The Senior Software Engineer role is responsible for working with teams across the company to implement new data solutions while maintaining the stability of the platform. You'll work within the Fraud Data Engineering team to grow their knowledge and expertise. You will get the chance to work with extremely large data sets and be on the cutting edge of transforming the way Mastercard captures, processes, stores and visualizes transactional data.

We're looking for a highly skilled and passionate engineer who thrives at the intersection of customer needs, business goals, and cutting-edge technology. The ideal candidate is not only technically proficient but also deeply curious, collaborative, and committed to delivering impactful solutions.

Key Responsibilities

-6–8 years of experience in software application development, with a strong foundation in programming.
-Minimum 5 years of hands-on experience in Java or Scala.
-At least 3 years of experience working with Hadoop platforms.
-Solid understanding of software engineering principles, including object-oriented design and microservices architecture.
-Proven expertise in building data processing applications using Scala and Python 3.10+.
-Strong grasp of design patterns, clean code practices, and writing maintainable, scalable software.
-Experience developing container-based applications in a microservices environment.
-Passion for learning and mentoring, with a collaborative mindset and eagerness to grow technical skills.
-Deep knowledge of Big Data platforms such as Databricks, Cloudera, Teradata, and the underlying Hadoop architecture.
-Creative problem-solver with a startup mentality and enthusiasm for tackling complex data and algorithmic challenges.
-Proficient with Git or similar version control systems.
-Committed to building high-quality, robust, and scalable software, with experience in CI/CD, test automation, and monitoring/alerting.
-Comfortable working in a high-performing Agile team.
-Excellent communication and interpersonal skills.

Preferred Qualifications

-Experience with relational and NoSQL databases, including query optimization and performance tuning.
-Hands-on experience with Spark 3.x and building large-scale batch data -pipelines on Hadoop clusters.
-Familiarity with messaging systems like Kafka and reactive architecture paradigms.
-Experience designing fault-tolerant, high-availability systems.
-Background in data modeling and building data dictionaries for big data environments.
-Exposure to cloud platforms such as Azure, AWS, or IBM Cloud (in order of preference).
-Knowledge of secure software development, including tools like Checkmarx.
-Experience with data analytics platforms, workflow engines, and UNIX shell scripting.
-1–2 years of experience in software architecture and mentoring junior engineers.

Skills & Attributes

-High energy, detail-oriented, and proactive with the ability to work independently under pressure.
-Strong initiative and self-motivation to drive results.
-Excellent verbal and written communication skills.
-Strong collaboration and organizational abilities.
-Willingness to embrace challenges and work within a matrixed, geographically distributed team.

About Mastercard

In the US, Mastercard is an inclusive Equal Employment Opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law.

If you require accommodations or assistance to complete the online application process, please contact reasonable_accommodation@mastercard.com and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.

Corporate Security Responsibility
All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

Abide by Mastercard's security policies and practices.

Ensure the confidentiality and integrity of the information being accessed.

Report any suspected information security violation or breach, and

Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.
#LI-KC Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact reasonable_accommodation@mastercard.com and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly.

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

• Abide by Mastercard's security policies and practices;

• Ensure the confidentiality and integrity of the information being accessed;

• Report any suspected information security violation or breach, and

• Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.

In line with Mastercard's total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: insurance (including medical, prescription drug, dental, vision, disability, life insurance); flexible spending account and health savings account; paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave); 80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire; 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; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations.

Pay Ranges

O'Fallon, Missouri: $115,000 - $184,000 USD

 Apply on company website