Senior Software Engineer, Java Full Stack & AI

Mastercard

Confirmed live yesterday High trust

Quick summary

Work type: On-site
Location: O'Fallon, MO
Salary: $115,000–$184,000 / yr
Posted: 1 day ago
Freshness: Confirmed live yesterday
Nearby: 99+ roles within 25 mi

Market check

Salary context

Competitive pay

How this pay compares to similar roles

Similar $163k

This role $150k

$103k $223k

below market most similar roles pay here above market

This role pays less than 66% of similar roles. Most pay $149,500–$177,250 — the blue band above. At the midpoint, this role pays about $150k versus about $163k for comparable roles.

Based on 240 similar postings.

Employer

About Mastercard

Mastercard is a global technology company in the payments industry, processing transactions between financial institutions and merchants using its extensive network of credit, debit, and prepaid card products. Industry: Payments Technology & Financial Services

Mastercard currently has 159 open roles on FindRole.

Listed pay typically runs $120,000–$204,000 across 145 roles with salary data.

Most-posted roles

View all roles at Mastercard

At a glance

TL;DR · Senior Software Engineer, Java Full Stack & AI

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The Senior Software Engineer - Java Full Stack & AI joins the Decision Services Technology team to develop analytics, reporting, and intelligence solutions. This role focuses on building AI-powered capabilities to automate manual analysis and improve customer outcomes within the payments and fraud detection space. You will design, develop, and deploy scalable APIs, backend services, and modern web applications while leading the integration of machine learning models into business products. The technical stack includes Java 8+, Spring Boot, Python, React, and Angular, alongside Oracle or SQL-based databases. You will also utilize CI/CD workflows and potentially work with AWS, Azure, GCP, Docker, Kubernetes, Databricks, and Spark. Responsibilities include mentoring engineers, conducting code reviews, and driving architectural decisions to ensure system reliability and performance.

What does a Software Engineer earn in Missouri?

Median $149500 from 56 postings across 6 companies.

See salary data

Skills

Java Spring Boot Python React Angular REST APIs Microservices Oracle SQL CI/CD AWS Azure GCP Docker Kubernetes Databricks Spark Delta Lake GitHub Copilot

What you'll do

Design, develop, test, and deploy complex software solutions using Java, Spring Boot, and Python.
Build scalable APIs, backend services, and modern web applications using React or Angular.
Lead the implementation of AI-enabled capabilities and automation initiatives into business products.
Contribute to architecture decisions and system designs for distributed and cloud-based systems.
Conduct code reviews and provide technical mentorship to less experienced engineers.
Perform troubleshooting and root-cause analysis for complex technical issues.
Improve system observability, performance, and operational readiness through continuous improvement initiatives.

What we're looking for

Bachelor's degree in Computer Science, Engineering, Information Technology, or a related field, or equivalent experience.
6+ years of experience developing enterprise software solutions.
Advanced proficiency in Java 8+ and Spring Boot.
Deep understanding of REST APIs, microservices, and distributed systems.
Strong knowledge of React, Angular, or comparable frontend frameworks.
Expertise in Oracle or SQL-based database development.
Knowledge of Python for AI, automation, and data-driven applications.
Experience with AWS, Azure, or GCP (preferred); knowledge of Docker, Kubernetes, and cloud-native architectures (preferred).

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