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  • $115k - $184k

     ...and services that help people, businesses and governments realize their greatest potential. Title and Summary Senior Software Engineer - Cloud Platforms Overview: Join our mission-driven team building the future of digital commerce on our rapidly scaling... 
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    3 days ago
  •  ...Software Engineer I Location: O'Fallon, MO (Local is Preference) Linux operating and scripting Python with API automation- scripting automation for day to day task Cryptography- how the cert works, and managing it Python or Java- understanding how they run... 
    Suggested
    Local area

    RIT Solutions

    O Fallon, MO
    3 days ago
  •  ...Software Engineer I, Launch Program 2026 Mastercard works to connect and power a sustainable and inclusive global economy. We are a vehicle for commerce, a connection to financial systems for the previously excluded, a technology innovation lab, and the home of Priceless... 
    Suggested
    Work experience placement
    Internship

    MasterCard

    O Fallon, MO
    1 day ago
  •  ...Software Engineer II Location: O'Fallon, Missouri (Main Campus) --- Local Candidates Only!! Duration: End of 2025 Glider: Software Engineer II - (Apache Spark, Airflow, Databricks, AWS, CICD and Coding(Java/Python/Scala); What are your top 3 required technical skills... 
    Suggested
    Local area

    RIT Solutions

    O Fallon, MO
    3 days ago
  •  ...Senior Software Engineer (iOS Developer) Location: St Louis, Missouri Duration: 12 months Glider: Software Engineer ADVANCED What are your top 3 required technical skills? Advanced level knowledge of native iOS development (Swift/Objective-C/Swift UI)... 
    Suggested

    RIT Solutions

    O Fallon, MO
    2 days ago
  • $115k - $184k

     ...Senior Software Engineer 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... 
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    Missouri Staffing

    O Fallon, MO
    4 days ago
  •  ...Senior Software Engineer O'Fallon, Missouri contract Rate: DOE U.S. Citizens and those authorized to work in the U.S. are encouraged to apply. We are unable to sponsor the currently Job Description Java, Spring, and Spring Boot Required. Everything is developed... 
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    Contract work

    Staffing the Universe

    O Fallon, MO
    5 days ago
  • Senior Software Dev Engineers O'Fallon MO (remote FOR NOW but will need to eventually be onsite) We can consider fully remote for a very strong candidate Looking for 2 Senior Software Dev Engineers This is part of
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    Remote work

    Samprasoft

    O Fallon, MO
    4 days ago
  •  ...Lead Full Stack Engineer Job Location: O'Fallon, MO (Hybrid onsite 3 days/week) Job Travel Location(s): Must be able to travel to office as needed Positions: 1 Employment Type: C2H Duration: Long Term Key Technology: Java, Full Stack, SQL Job Responsibilities: Lead... 
    Suggested
    Work at office
    3 days per week

    Veracity

    O Fallon, MO
    2 days ago
  • $85.15k - $153.93k

     ...Job Description Description The Leidos FS2 Aero team has an opening for an experienced Full Stack Software Developer r to modify existing code and integrate software solutions for the Aeronautical Navigation Office. The ideal candidate has an excellent understanding... 
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    Work at office

    Leidos

    Saint Charles, MO
    8 days ago
  • $138k - $221k

     ...greatest potential. Title and Summary Lead Data Platform Engineer Overview: Are you an experienced data platform engineer with...  ...teams, including data scientists, data analysts, and software engineers, to help drive data-driven decision making throughout... 
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    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    2 days ago
  •  ...Senior Azure Platform Engineer 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... 
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    MasterCard

    O Fallon, MO
    1 day ago
  • $138k - $221k

     ...services that help people, businesses and governments realize their greatest potential. Title and Summary Manager, Software Engineering Overview Responsible for the analysis, design, development and delivery of software solutions Defines requirements for... 
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    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    2 days ago
  • $138k - $221k

     ...Lead, AI Security Engineer As an Information Security Engineer specializing in AI Security, you will be at the forefront of protecting...  ...Secure AI Development: Collaborate with data scientists and software engineers to integrate security best practices into the AI development... 
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    Full time
    Part time
    Flexible hours

    MasterCard

    O Fallon, MO
    1 day ago
  • $115k - $184k

     ...Senior Software Engineering (RPA - Automation Anywhere 360 & C# .NET) 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... 
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    2 days ago
  •  ...Bachelors or Masters in CS or related degrees. Minimum of 6+ years with Master or 8+ years with Bachelors of hand on experience in software development in test automation, concurrent coding skills in Java. Test automation experience using open source technologies and/or... 

    Staffing the Universe

    O Fallon, MO
    2 days ago
  •  ...Intern, Information Security - Engineering Mastercard works to connect and power a sustainable and inclusive global economy. We are a vehicle for commerce, a connection to financial systems for the previously excluded, a technology innovation lab, and the home of Priceless... 
    Summer work
    Internship
    Summer internship
    Work at office

    MasterCard

    O Fallon, MO
    2 days ago
  •  ...Data Engineer I, Launch Program 2026 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... 
    Full time
    Part time
    Work at office
    Worldwide
    Flexible hours

    Missouri Staffing

    O Fallon, MO
    3 days ago
  • Job Title: Junior Email Marketing Developer Location: On-Site (OFallon, MO) Position Type: Full-time Exempt Summary: Milestone Marketing Solutions is looking for a marketing professional looking to specialize in data-driven email deployment and analytics. From...
    Full time
    Apprenticeship
    Work at office
    Local area
    Flexible hours

    Automotive Product Consultants Llc

    O Fallon, MO
    3 days ago
  • $138k - $221k

     ...Lead Software Engineer 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... 
    Full time
    Part time
    Flexible hours

    MasterCard

    O Fallon, MO
    1 day ago
  • $138k - $221k

     ...Lead Data Engineer 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... 
    Full time
    Part time
    Worldwide
    Flexible hours

    Missouri Staffing

    O Fallon, MO
    6 days ago
  • $119k - $190k

     ...is product management role that is also technical in nature and works closely with customers, Technical Program Managers, Software Design Engineers, and User Experience. You will define and guide products, that may be technical, from conception to launch by connecting... 
    Full time
    Part time
    Worldwide
    Flexible hours

    Mastercard

    O Fallon, MO
    3 days ago
  • $119k - $190k

     ...roadmap for technical platforms and back-office batch processes integrated with transactional APIs. • Act as product owner for engineering teams, writing and prioritizing epics, features, and user stories with strong technical context in reconciliation and reporting.... 
    Full time
    Part time
    Worldwide
    Flexible hours

    Mastercard

    O Fallon, MO
    4 days ago
  • $119k - $190k

     ...product teams to enable their business goals through scalable AI and decisioning solutions. PM-Ts integrate expertise from architects, engineering PM-Ts, and technical program managers to define and execute actionable roadmaps that align with enterprise and product priorities... 
    Full time
    Part time
    Worldwide
    Flexible hours
    3 days per week

    Mastercard

    O Fallon, MO
    3 days ago
  • $119k - $190k

     ...businesses and governments realize their greatest potential. Title and Summary Lead Product Manager- Technical Leads software engineering projects and creates the development and delivery of enhanced software solutions. Researches alternative technical solutions... 
    Full time
    Part time
    Worldwide
    Flexible hours

    Mastercard

    O Fallon, MO
    3 days ago
  •  ...languages * Experience with responsive HTML design, preferably in emails * Experience with Handlebars, EJS, or other HTML templating engines * Experience with Salesforce Marketing Cloud Engagement (formerly ExactTarget) * An understanding of REST and SOAP APIs *... 
    Full time
    Apprenticeship
    Work at office
    Local area
    Flexible hours

    Automotive Product Consultants, LLC

    O Fallon, MO
    1 day ago
  • $119k - $190k

     ...understand their business needs and translate to business and functional requirements • Work cross-functionally with project managers and engineering teams to gather estimates, create designs and drive the delivery of business and functional requirements • Act as the voice of... 
    Full time
    Part time
    Worldwide
    Flexible hours
    Shift work

    Mastercard

    O Fallon, MO
    3 days ago
  • $119k - $190k

     ...operations in a DevOps model •Experience with XP, TDD and BDD in the software development processes •Proven track record of data driven...  ...leadership while commanding the respect of the individual engineers across the organization •Deep understanding of the platform, the... 
    Full time
    Temporary work
    Part time
    Worldwide
    Flexible hours
    Shift work

    Mastercard

    O Fallon, MO
    1 day ago
  • $119k - $190k

    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 ...
    Full time
    Part time
    Worldwide
    Flexible hours

    Mastercard

    O Fallon, MO
    4 days ago
  • $119k - $190k

     ...UX designers, and internal customers to define the details behind the business requirements Refine user stories to be walked with engineering teams and clarify/follow up on open queries. Ensures business requirements are accurately captured through collaboration with... 
    Full time
    Part time
    Remote work
    Worldwide
    Flexible hours

    Mastercard

    O Fallon, MO
    1 day ago