Top 14 C developer Jobs in O'fallon, Mo

Site Reliability Engineer II
Mastercard —O'Fallon, MO
- $76,000 - $127,000 a year
- Online Application
- Computer science
- Computer Science
- Bachelor of Science
- Paid jury duty
- Health savings account
Senior Site Reliability Engineer
Mastercard —O'Fallon, MO
- $96,000 - $163,000 a year
- Online Application
- Computer science
- Computer Science
- Bachelor of Science
- Paid jury duty
- Health savings account
Software Developer
iBrain Technologies —Chesterfield, MO
- Remote
- Computer Science
- Mid-level
- Travel
Senior Software Engineer - Java Full Stack Engineer
Mastercard —O'Fallon, MO
- $115,000 - $184,000 a year
- Online Application
- Computer science
- 7 years
- Computer Science
- Paid jury duty
- Health savings account
Engineer - Application Development
World Wide Technology Holding, LLC —St. Louis, MO
- $90,000 - $135,000 a year
- Full-time
- Remote
- System design
- Mid-level
- 3 years
- Profit sharing
- Wellness program
3d
Senior Software Engineer
Mastercard —O'Fallon, MO
- $115,000 - $184,000 a year
- Online Application
- Computer science
- Computer Science
- System design
- Paid jury duty
- Health savings account
Mobile Application Developer
Bridgesoft —Pacific, MO
- Computer science
- Computer Science
- Software troubleshooting
Lead Software Engineer (C/C++)
Mastercard —O'Fallon, MO
- $140,000 - $231,000 a year
- Online Application
- Product management
- Mentoring
- Linux
- Paid jury duty
- Health savings account
SharePoint Developer
CGI Group, Inc. —United States
- $97,300 - $156,700 a year
- Computer Science
- 5 years
- Writing skills
- Paid parental leave
- Paid holidays
Senior Salesforce Developer
CGI Group, Inc. —United States
- $97,300 - $156,700 a year
- Computer Science
- 8 years
- AWS
- Paid parental leave
- Paid holidays
7d

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Site Reliability Engineer II

Mastercard -
O'Fallon, MO

Apply Now

Job Details

Full-time
$76,000 - $127,000 a year

Benefits

Paid jury duty
Health savings account
Paid holidays
Disability insurance
Health insurance
Dental insurance
Flexible spending account
Tuition reimbursement
Vision insurance
401(k) matching
Gym membership
Bereavement leave
Life insurance

Qualifications

Data structures
System design
Algorithms
System design for system development
Collaboration with product development teams
Technical troubleshooting support
Distributed computing
DevOps automation
Design (software development lifecycle)

Full Job 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

Site Reliability Engineer II

The BizOps team at Mastercard is looking for a Site Reliability Engineer (SRE) who thrives on solving complex problems, building robust CI/CD pipelines, and leading the organization in DevOps automation and best practices.

Are You:
A natural problem-solver who loves to understand how things work?
Passionate about CI/CD and obsessed with automation?
Someone with a low tolerance for manual tasks, always seeking ways to automate?
If yes, we want to hear from you.

About the BizOps Team
Business Operations (BizOps) is at the forefront of Mastercard’s DevOps transformation, leading the charge through tooling, automation, and advocacy across development, quality, release, and product teams.
We’re looking for individuals who:
Have an appetite for change.
Push the boundaries of what automation can achieve.
Build strong relationships across development, operations, and product teams.

Mission
BizOps ensures production readiness by partnering closely with developers to design, build, implement, and support services. Key responsibilities include:
Ensuring operational excellence in availability, performance, capacity, monitoring, self-healing, and deployment automation.
Supporting daily operations with a focus on root cause analysis and business impact.
Driving the “shift-left” approach, engaging early in development to enhance reliability.
Managing risk and compliance across all environments.
Standardizing and streamlining traditional support functions.
Acting as a key communication bridge between internal and external stakeholders.
Aligning product and customer priorities with operational needs.

Responsibilities
Engage in and improve the entire service lifecycle – from design to deployment and operations.
Analyze ITSM platform activities and provide feedback to development teams on operational gaps and resiliency issues.
Provide system design consulting, capacity planning, and launch readiness support.
Monitor and maintain system availability, latency, and health.
Scale systems through automation and reliability-focused improvements.
Support and improve the CI/CD pipeline for software promotion, enforcing validation and operational gating.
Lead DevOps automation initiatives and best practices at Mastercard.
Drive sustainable incident response and conduct blameless postmortems.
Take a holistic approach to problem-solving during production incidents, improving Mean Time to Recovery (MTTR).
Work effectively with a globally distributed team across multiple time zones.
Share knowledge and mentor junior engineers.

Qualifications
BS degree in Computer Science or a related technical field (e.g., Physics, Mathematics) or equivalent practical experience.
Strong foundation in algorithms, data structures, scripting, software design, and pipeline management.
Systematic problem-solving approach with excellent communication, ownership, and drive.
Experience debugging and optimizing code, and automating manual tasks.
Ability to handle high-pressure situations and make decisions with urgency.
Proficiency in one or more programming languages: C, C++, Java, Python, Go, Perl, or Ruby.
Experience working with large-scale distributed systems and troubleshooting them effectively.
Experience with CI/CD tools, such as:
Git/BitBucket
Jenkins
Maven
Artifactory
Chef
Strong background in designing and implementing efficient CI/CD flows that get code from development to production with high quality and minimal manual effort.
Proven track record of working across development, operations, and product teams

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 [email protected] 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: $76,000 - $127,000 USD

Apply Now

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c developer jobs in o'fallon, mo

Site Reliability Engineer II

Senior Site Reliability Engineer

Software Developer

Senior Software Engineer - Java Full Stack Engineer

Engineer - Application Development

Senior Software Engineer

Mobile Application Developer

Lead Software Engineer (C/C++)

SharePoint Developer

Senior Salesforce Developer

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