Average salary: $76,985 /yearly

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  • Software Engineer II

    $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...
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    Mastercard

    O Fallon, MO
    1 day ago

  • Software Engineer II

    $160k

    Mastercard is seeking a Software Engineer II to build secure, scalable applications for the Financial Services industry within our dynamic IT organization. You will design and implement cloud-based services, integrations, and APIs, writing clean, testable code and collaborating...
    Suggested

    Mastercard

    O Fallon, MO
    20 hours ago

  • Software Engineer II

    Excellent communication skills with the ability to communicate with all levels of management Ability to build rapport and relationships Someone understanding the concept of operations first, focusing on usability, operability of applications from the get go...
    Suggested

    Saxon Global

    O Fallon, MO
    4 days ago

  • Senior Site Reliability Engineer

    $96k - $163k

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

    Mastercard

    O Fallon, MO
    1 day ago

  • Site Reliability Engineer II

    $76k - $127k

    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 ...
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    Mastercard

    O Fallon, MO
    1 day ago

  • Senior Site Reliability Engineer, Performance Engineering

    $96k - $163k

    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 ...
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    Mastercard

    O Fallon, MO
    1 day ago

  • Site Reliability Engineering Intern, Summer 2027 - St. Louis, MO, US

    $25 - $30 per hour

    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 ...
    Suggested
    Full time
    Part time
    Summer work
    Internship
    Worldwide
    Flexible hours

    Mastercard

    O Fallon, MO
    1 day ago

  • Sr. Software Developer

    Job TitleAbout 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 ...
    Suggested

    Yantran LLC

    O Fallon, MO
    20 hours ago

  • Manager, Software Engineering

    $140k - $231k

    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 ...
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    Mastercard

    O Fallon, MO
    1 day ago

  • CMM Programmer - Aerospace Manufacturing

    Job Description Job Description At Seyer Industries, you'll help Build the Future of Flight by programming CMM's for precision aerospace and defense components that demand the highest levels of quality and accuracy. Join a growing, technology-driven manufacturer where...
    Suggested
    Temporary work

    Seyer Industries Inc.

    Saint Peters, MO
    11 days ago

  • Sr. Software Engineer

    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
    1 day ago

  • CMM Programmer — Aerospace Precision & Impact

    Seyer Industries, a precision aerospace and defense components manufacturer based in St. Peters, Missouri, seeks a CMM Programmer to develop and optimize measurements for high-precision parts. You will work with PC-DMIS across multiple CMMs to capture critical customer... 
    Suggested

    Seyer Industries, Inc.

    Saint Peters, MO
    20 hours ago

  • Manager, Site Reliability Engineering

    $122k - $207k

    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
    1 day ago

  • Lead Site Reliability Engineer-2

    $122k - $207k

    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 ...
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    Mastercard

    O Fallon, MO
    1 day ago

  • C++ Developer

    Global Credit Card Authorization Team OpportunityThis is an exciting opportunity for you to join the global credit card authorization team. The system facilitates billions of transactions among issuers, acquirers, and service providers. We are looking for engineers that...
    Suggested

    Samprasoft

    O Fallon, MO
    20 hours ago

  • Senior Java Developer

    Digital Identity Technical ArchitectOverview: As part of an exciting, fast paced environment developing digital identity and security solutions in the mobile and e-commerce space, this position will provide technical expertise within the development lifecycle for new products...

    Samprasoft

    O Fallon, MO
    20 hours ago

  • Lead Mainframe Developer

    Lead Mainframe DeveloperLocation: O'Fallon, MO OnSite Full Time Permanent & ContractProduct: Hogan suite (UMB,CIS,CAMS etc.)Must HaveExperience in L2 and L3 Maintenance, Support and CompliancesCOBOL, VSAM, JCL, DB2, Assembler1. Working experience in CAMS, Settlement / ...
    Permanent employment
    Full time
    Work experience placement

    Georgia IT Inc

    O Fallon, MO
    20 hours ago

  • Java Developer

    Software EngineerInterview: Coding Test + F2F This is hybrid from day-1 (Need only local candidates) Visa: USC, GC, GC EAD, H4, L2Responsible for the analysis, design, development and delivery of software solutionsDefines requirements for new applications and customizations...
    Contract work
    Local area

    ShiftCode Analytics

    O Fallon, MO
    20 hours ago

  • Java Developer

    Sr. Java DeveloperKey Skills and Experience:Strong hands on experience in Java(J2ee)Strong in webservices(microservices), Rest API's, Oracle DB knowledge, Cloud native(preferably AWS or Azure)Ability to drive end to end development, performance code reviews, build test...

    Damco

    O Fallon, MO
    20 hours ago

  • C++ Developer

    C++ Developer – ReplacementLocation: OFALLON, MO – DAY 1 Onsite (hybrid)Duration: Long TermNumber of openings: 1Roles and Responsibilities:Need someone who can analyze C/C++ code and find performance bottlenecks.Proficient in C/C++Proficient in a scripting language (shell...

    Zortech Solutions

    O Fallon, MO
    20 hours ago

  • Senior Software Engineer - Java

    $115k - $184k

    Senior Software Engineer - JavaMastercard 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...
    Full time
    Part time
    Worldwide
    Flexible hours
    3 days per week

    Dynamic Yield

    O Fallon, MO
    20 hours ago

  • Python Developer

     ...parallelization where possible to improve throughputImprove fault tolerance, logging and restartability.All About You:Expert Python programmer in a Unix environmentProven track record in ML pipeline design including LSF and NiFiExperience in designing large-scale data-... 
    For contractors
    H1b
    Work at office
    Local area

    Samprasoft

    O Fallon, MO
    20 hours 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
    2 days ago

  • Lead Software Engineer

    $60k - $135k

    Job Title: Lead Software Engineer City: O Fallon State/Province: Missouri Posting Start Date: 8/25/26 Wipro Limited (NYSE: WIT, BSE: 507685, NSE: WIPRO) is a leading technology services and consulting company focused on building innovative...
    Minimum wage
    Local area

    Wipro

    O Fallon, MO
    1 day ago

  • Senior Software Engineer

    $115k - $184k

    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
    Shift work

    Mastercard

    O Fallon, MO
    13 days ago

  • Senior Software Engineer

    $115k - $184k

    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
    13 days ago

  • Senior Site Reliability Engineer

    $190k

    As a Senior Site Reliability Engineer at Mastercard, you’ll drive the performance, reliability, and scalability of mission-critical, cloud-native payment platforms. You will design and implement robust monitoring, alerting, and observability solutions, automate infrastructure...

    Mastercard

    O Fallon, MO
    20 hours ago

  • Senior Site Reliability Engineer

    $180k

    Mastercard is seeking a Senior Site Reliability Engineer to enhance reliability, scalability, and performance of our critical IT & Data Management platforms. You will design resilient architectures, automate deployments, and champion observability to ensure always-on services...

    Mastercard

    O Fallon, MO
    20 hours ago

  • Site Reliability Engineer II

    $165,000 per week

    Mastercard is seeking a Site Reliability Engineer II to enhance the reliability, scalability, and performance of critical IT systems. In this role, you will design and implement robust monitoring, automation, and incident response processes to support innovative, user‑focused...

    Mastercard

    O Fallon, MO
    20 hours ago

  • Senior Site Reliability Engineer

    $195k

    Mastercard seeks a Senior Site Reliability Engineer in Financial Services within the IT & Data Management team. You’ll design, build, and optimize resilient, secure, and scalable platforms that power global payments. Partner with software and data teams to improve reliability...

    Mastercard

    O Fallon, MO
    20 hours ago