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  • Software Engineer I, Launch Program 2026 - United States

     ...The Launch program is a development program that is supplemental to the role and is designed to help you transition from being a student to being a Mastercard employee. In this program, you will participate in: Four-day orientation focused on getting to know Mastercard... 
    For students
    Work experience placement
    Internship

    MasterCard

    O Fallon, MO
    5 days ago

  • Senior Software Engineer

    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
    Suggested
    Remote work

    Samprasoft

    O Fallon, MO
    3 days ago

  • Sr. Software Developer

    About Us: At *** (*** | Connected World, Connected Experiences), we live the philosophy of connected world and connected experiences. We thrive on change that is powered by the intelligent symphony of technology and humans designing meaningful and sustainable experiences...
    Suggested

    Yantran LLC

    O Fallon, MO
    4 days ago

  • Senior Software Engineer

    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
    1 day ago

  • Software Engineer

    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
    2 days ago

  • Software Engineer I - Level 9

    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
    2 days ago

  • Senior Software Engineer-O'Fallon, Missouri

    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...
    Suggested
    Contract work

    Staffing the Universe

    O Fallon, MO
    4 days ago

  • Senior Software Engineer

    $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
    3 days ago

  • Senior Java Developer : Mastercard

    Interview : Coding Test + F2F This is hybrid from day-1 ( Need only local candidates ) Visa : USC, GC, GC EAD, H4, L2 Description : Responsible for the analysis, design, development and delivery of software solutions Defines requirements...
    Suggested
    Contract work
    Local area

    ShiftCode Analytics

    O Fallon, MO
    4 days ago

  • Software Engineer I (Java/Fullstack)

    $72k - $115k

    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...
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    2 days ago

  • Java Software Engineer - O'Fallon (Onsite)

    $100k - $105k

    We are seeking a senior-level Java Software Engineer with strong technical expertise to guide development efforts and drive high-quality software delivery in our corporate banking division. You will work on high-traffic, scalable microservices while providing technical...
    Suggested
    Temporary work
    Flexible hours

    EPAM Systems Inc

    O Fallon, MO
    3 days ago

  • Lead BizOps Engineer

    $112k - $187k

    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...
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours
    Shift work

    MasterCard

    O Fallon, MO
    2 days ago

  • Java Engineer

    Java Engineer Client - Client Salary - $65 /Hr or 115k per annum Location - New York City , NY ( Candidates need to go for in person interview .) or, O Fallon, MO (no need of in person interview). Hybrid role. Need local candidates only. ...
    Suggested
    Local area

    DCM INFOTECH LIMITED

    O Fallon, MO
    1 day ago

  • Mid level Performance Engineer/Software Engineer : Mastercard

    Interview : Coding test + F2F interview Visa : All apart from h1b and cpt This is hybrid from day-1 ( Need only local canddiates ) All of the performance scripts are in C/C++. They said that they would be open to a recent grad currently...
    Suggested
    H1b
    Local area
    Worldwide

    ShiftCode Analytics

    O Fallon, MO
    4 days ago

  • Sr Principal Software Engineer

    $200k - $320k

    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...
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    2 days ago

  • Junior Java Developer: Mastercard

    Interview : Coding Test + F2F interview This is hybrid from day-1 ( Need only local candidates ) Visa : USC, GC, GC EAD, H4, L2 Description: We are looking for more junior java developers that have experience with testing that are looking to get into ...
    Local area

    ShiftCode Analytics

    O Fallon, MO
    4 days ago

  • Java Engineer

    Position: Java Engineer Location: Onsite - 5 Days/Week (O'Fallon, Missouri or NYC, NY) Type: Full-Time Employee (FTE) Openings: 5 urgent positions Interview Mode: Local candidates must be available for in-person interviews We're seeking experienced...
    Full time
    Local area

    Veracity

    O Fallon, MO
    4 days ago

  • Software Engineer II - iOS Developer

    $92k - $147k

    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...
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    3 days ago

  • Lead SDET Engineer

    Job Title Need strong Testng, Selenium, Java Coding experience Must have: 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...

    Staffing the Universe

    O Fallon, MO
    1 day ago

  • Senior Software Engineer Java SpringBoot Angular

    Job Title: Senior Software Engineer Overview: Job Overview Responsible for the analysis, design, development and delivery of software solutions. Define requirements for new applications and customization adhering to MasterCard standards, processes and best practices...
    Work experience placement

    MasterCard

    O Fallon, MO
    4 days ago

  • Sr Software Engineer - Java / Angular

    Summary Seeking an experienced full stack Software Engineer with proficiency in Java and Angular development, to assist the company with ongoing build and support work as well as to prepare and execute a systems migration/integration.This is a full time employee position...
    Full time
    Local area
    Remote work
    Relocation

    Timeless Technology Solutions

    Dardenne Prairie, MO
    10 hours ago

  • Lead Full Stack Engineer

    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...
    Work at office
    3 days per week

    Veracity

    O Fallon, MO
    1 day ago

  • Manager, Software Engineering

    $138k - $221k

    Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions...
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    1 day ago

  • Senior Software Engineer - Cloud Platforms

    $115k - $184k

    Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions...
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    3 days ago

  • Senior Software Engineering (RPA - Automation Anywhere 360 & C# .NET)

    $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...
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    1 day ago

  • Lead, AI Security Engineer

    $138k - $221k

    Lead, AI Security Engineer As an Information Security Engineer specializing in AI Security, you will be at the forefront of protecting our AI systems and data. Your role will involve deep technical expertise in designing, implementing, and maintaining advanced security...
    Full time
    Part time
    Flexible hours

    MasterCard

    O Fallon, MO
    5 days ago

  • Senior Azure Platform Engineer

    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 ...

    MasterCard

    O Fallon, MO
    10 hours ago

  • Lead Data Platform Engineer

    $138k - $221k

    Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, were helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions...
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    1 day ago

  • Imaging Assistant PRN

     ...: MO-SSM Health St. Joseph Hospital - St. Charles, MO Requirements:   Patient facing and Office experience preferred. Imaging students welcome! Fulfill your calling and be a part of the SSM Team. Apply Today! Job Summary: Assists technologists and provides... 
    For students
    Hourly pay
    Daily paid
    Part time
    Work experience placement
    Relief
    Work at office
    Flexible hours
    Shift work
    Night shift
    Weekend work
    Day shift

    SSM Health

    Lake Saint Louis, MO
    2 days ago

  • Service Specialist - Flexible Hours

     ...ROADS LEAD TO THIS OPPORTUNITY The journey to Valvoline Instant Oil Change (VIOC) is different for everyone. Our employees are students, recent grads, parents, veterans, career changerswho have all found their way to our team. No matter where youve been or what... 
    For students
    Hourly pay
    Weekly pay
    Part time
    Flexible hours
    Weekend work

    Valvoline Instant Oil Change

    O Fallon, MO
    3 days ago