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Java jobs in o'fallon USA

36 java jobs found in o'fallon: showing 21 - 36

Software Engineer Ii
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$92000 - 147000 per year | Date posted: 30 Jan 2026
. All About You - Strong hands-on experience in JAVA Spring Boot for developing scalable and high-performance applications - Working knowledge..., and containerization - Has ability to write code (in languages such as Java preferred and JavaScript) to build automation tasks
Devops Sre
Company: Diverse Lynx |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 29 Jan 2026
templates, Mongodb, PostgreSQL, Python, Splunk, Grafana, Web APIs, Micro services, Java Mandatory Skills: Jenkins . Diverse
Devops Sre
Company: Diverse Lynx |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 29 Jan 2026
templates, Mongodb, PostgreSQL, Python, Splunk, Grafana, Web APIs, Micro services, Java Diverse Lynx LLC is an Equal
Senior Software Engineer (aws Platform)
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$115000 - 184000 per year | Date posted: 28 Jan 2026
of Object-Oriented Programming (OOP) principles and experience applying them in languages like Python or Java. Scripting skills
Senior Reliability Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$96000 - 163000 per year | Date posted: 27 Jan 2026
quality and minimal manual effort is desired. - Experience in one or more of the following is preferred: C, C++, Java, Python
Senior Bizops Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$96000 - 163000 per year | Date posted: 27 Jan 2026
decisions with a sense of urgency is needed. Experience in one or more of the following is preferred: C, C++, Java, Python, Go
Senior Bizops Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$96000 - 163000 per year | Date posted: 27 Jan 2026
decisions with a sense of urgency is needed. Experience in one or more of the following is preferred: C, C++, Java, Python, Go
Principal Software Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 22 Jan 2026
vulnerabilities. Key Technology Areas: Backend (Java/2JEE, Spring Boot, Python, API design, microservice architecture) Frontend
Vice President, Software Engineering - Send
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 15 Jan 2026
, deep expertise in Java-based distributed systems, and a proven track record of building high-availability, low-latency... architecture and design decisions for large-scale Java distributed systems, including event-driven architectures, messaging
Vice President, Software Engineering
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 13 Jan 2026
. All About You Technology Expertise Experience working across distributed and mainframe technology stacks Deep experience with Java and event.... Experience with Java, Shell Scripting, SQL Mainframe technologies including COBOL and advantage Ideal Candidate Profile
Software Engineer Ii
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$92000 - 147000 per year | Date posted: 03 Jan 2026
performance tests and drive resolution of failures Dig into Java code, databases, middleware, and vendor software to identify... All About You Strong software engineering experience developing applications using the Java Spring Boot framework for performance testing
Lead Software Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 01 Jan 2026
code in three or more languages (e.g., Java, JavaScript, C, C++, SQL) Familiar with secure coding standards (e.g., OWASP
Director, Reliability Engineering
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 24 Dec 2025
is preferred: C, C++, Java, Python, Go, Perl or Ruby. Experience in Operations tools like Remedy, Service now Interest
Senior Bizops Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$96000 - 163000 per year | Date posted: 06 Dec 2025
decisions with a sense of urgency is needed. Experience in one or more of the following is preferred: C, C++, Java, Python, Go
Senior Bizops Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: US$96000 - 163000 per year | Date posted: 06 Dec 2025
decisions with a sense of urgency is needed. Experience in one or more of the following is preferred: C, C++, Java, Python, Go
Principal Bizops Engineer
Company: Mastercard |

Location: O'Fallon, MO, USA

| Salary: unspecified | Date posted: 26 Nov 2025
is preferred: C, C++, Java, Python, Go, Perl or Ruby. Interest in designing, analyzing and troubleshooting large-scale distributed