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  • Senior Software Engineer - Cloud Platforms

    $115k - $184k

     ...Integrations Design and implement integrations with third-party SaaS platforms to enhance functionality and streamline processes. Develop and maintain APIs for SaaS integrations, ensuring they are secure, reliable, and scalable. Troubleshoot and resolve integration... 
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    2 days ago

  • Lead Data Platform Engineer

    $138k - $221k

     ...and a strong sense of ownership and innovative spirit? The Cloud Data Platforms team is an excellent opportunity for you to design & develop the next wave of data innovation at MasterCard. Our program is leading the efforts to bring our data and analytics expertise into... 
    Suggested
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    5 days 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...
    Suggested
    Work at office
    3 days per week

    Veracity

    O Fallon, MO
    15 hours 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 ...
    Suggested

    MasterCard

    O Fallon, MO
    4 days ago

  • Senior Java Developer

     ...Senior Java Developer Location: O Fallon, MO (Onsite) Duration: 24 Months Must Have Skills: Java PCF Angular Detailed Job Description: You have experience building applications using Java and PCF. You have extensive experience with Java APIs. Some experience with... 
    Suggested

    eTeam

    O Fallon, MO
    4 days ago

  • Sr. Java Developer

    Sr. Java Developer Key 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...
    Suggested

    Damco

    O Fallon, MO
    1 day ago

  • Java Engineer

    Hybrid Role Need local candidates only. Interview Process Hacke rank Test , l1 & L2 interview. An ideal candidate for this role would have extensive experience in Java development and be well-versed in cloud-native applications, microservices, and a modern technology...
    Suggested
    Local area

    Damco

    O Fallon, MO
    5 days ago

  • Lead BizOps Engineer/SRE : Mastercard

     ...business operations is to be the production readiness steward for the platform. This is accomplished by closely partnering with developers to design, build, implement, and support technology services. A business operations engineer will ensure operational criteria like... 
    Suggested
    Local area
    Shift work

    ShiftCode Analytics

    O Fallon, MO
    15 hours ago

  • Java Software Engineer - O'Fallon (Onsite)

    $100k - $105k

     ...scalable microservices while providing technical leadership to both onshore and offshore teams. Responsibilities: Design and develop Java-based microservices architecture Ensure implementation quality, including maintainability, security, and performance best... 
    Suggested
    Temporary work
    Flexible hours

    Missouri Staffing

    O Fallon, MO
    3 days ago

  • C#/.Net Software Developer (Associate, Experienced, or Senior Level)

    $85k - $115k

     ...us. The Boeing Company is currently seeking C#/.Net Software Developer (Associate, Experienced, or Senior Level) to join the Special Equipment...  ..., and test software in C#/Windows Presentation Foundation (WPF) Participate in an Agile scrum team Implement new features... 
    Suggested
    Permanent employment
    Interim role
    Currently hiring
    Relocation
    Visa sponsorship
    Work visa
    Flexible hours
    Shift work
    Day shift

    Boeing

    Berkeley, MO
    1 day ago

  • Lead Mainframe Developer

     ...Lead Mainframe Developer Location: O'Fallon, MO OnSite Full Time Permanent & Contract Product: Hogan Suite (UMB, CIS, CAMS etc.) Must Have Experience in L2 and L3 Maintenance, Support and Compliances: COBOL, VSAM, JCL, DB2, Assembler Working experience in... 
    Suggested
    Permanent employment
    Full time
    Contract work
    Work experience placement

    Staffing the Universe

    O Fallon, MO
    3 days ago

  • Lead, AI Security Engineer

    $138k - $221k

     ...lifecycle, including secure model training, validation, and deployment. Support security engineers in the evaluation of AI systems being developed and implemented. Compliance and Standards: Keep track of emerging industry standards, regulations, and best practices for AI... 
    Suggested
    Full time
    Part time
    Flexible hours

    MasterCard

    O Fallon, MO
    4 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
    2 days ago

  • Senior Software Engineer-O'Fallon, Missouri

     ...: 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 in that Rest API knowledge is a plus Very Mu...... 
    Suggested
    Contract work

    Staffing the Universe

    O Fallon, MO
    3 days ago

  • Software Engineer I, Launch Program 2026 - United States

     ...reliability, performance, and are driven to deliver solutions that delight our customers. We are looking for talented software engineers to develop advanced technologies and applications that are revolutionizing payments. Software engineers at Mastercard build the systems that... 
    Suggested
    Full time
    Part time
    Work experience placement
    Internship
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    4 days ago

  • Senior Software Engineer

    $115k - $184k

     ...you're passionate about building great software and ready to grow your career, we'd love to hear from you. Role Hands-on developer who writes high quality, secure code that is modular, functional and testable. Create or introduce, test, and deploy new technology... 
    Full time
    Part time
    Worldwide
    Flexible hours

    Missouri Staffing

    O Fallon, MO
    2 days ago

  • Senior Email Marketing Developer

    $80k - $120k

     ...Job Title: Senior Email Marketing Developer Reporting to: Marketing Operations Specialist 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... 
    Full time
    Apprenticeship
    Work at office
    Local area
    Flexible hours

    Automotive Product Consultants Llc

    O Fallon, MO
    1 day ago

  • Lead Software Engineer (iOS Developer)

    Job Opportunity In O'Fallon Mo O'Fallon MO (remote for now but will need to eventually be onsite, can relocate and be onsite) We are willing to give someone "a few months" (manager's words) to relocate if they are interested.
    Remote work
    Relocation

    Samprasoft

    O Fallon, MO
    5 days ago

  • Full Stack Software Developer

    $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... 
    Work at office

    Leidos

    Hazelwood, MO
    11 days ago

  • Senior Software Engineer (Java, SpringBoot, Angular)

    $115k - $184k

     ...feasibility, work with business partners and customers to define alternatives and recommend optimal solutions. Work closely with other developers to design of new functionality and enhancements to MasterCard Commercial products. Demonstrate expertise of principles,... 
    Full time
    Part time
    Work experience placement
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    4 days ago

  • Lead Site Reliability Engineer

    $112k - $187k

     ...we are responsible for ensuring that our platform is stable and healthy. We break down barriers to run our products by fostering developer run ownership and empowering developers to build resilient products. We support our developers during the application build phase... 
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    2 days ago

  • Lead Site Reliability Engineer-1

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

    MasterCard

    O Fallon, MO
    15 hours ago

  • F/A-18 IDIQ Chief Integrator

    $143.65k - $194.35k

     ...Integrator in St. Louis, MO . The F/A-18 IDIQ Chief Integrator is responsible for ensuring the capabilities and initiatives developed for the F/A-18 and EA-18G are well-planned, tested thoroughly, and delivering the right value to the warfighter at the right... 
    Permanent employment
    Full time
    Interim role
    Relocation
    Visa sponsorship
    Work visa
    Flexible hours
    Shift work
    Day shift

    BOEING

    Berkeley, MO
    2 days ago

  • Manager, Software Engineering

    $138k - $221k

     ...services in the delivery of internal or market-facing Products, Platforms, or Product bundles Work with business/product owners to develop and deliver on new services to introduce new products and bundles Ensure objectives and development plans are established at the... 
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    15 hours ago

  • T-38C P3 Software Engineer (Real Time Software Engineer)

    $110.5k - $149.5k

     ...T-38C P3 Software Engineer (Real Time Software Engineer) at BOEING summary: The T-38C P3 Software Engineer at Boeing develops, tests, and maintains real-time embedded flight software for T-38C trainer aircraft. This role involves collaboration with systems integration... 
    Permanent employment
    Full time
    Interim role
    Relocation
    Visa sponsorship
    Work visa
    Flexible hours
    Shift work
    Day shift

    BOEING

    Hazelwood, MO
    2 days ago

  • Senior Software Certification Engineer

    $119k - $172k

     ...is seeking an experienced and dedicated Software Certification Engineer to lead our engineering team in the critical mission of developing and certifying safe, reliable, and innovative aircraft. This role is paramount in ensuring that our aircraft not only meet but exceed... 
    Permanent employment
    Full time
    Work experience placement
    Relocation
    Visa sponsorship
    Work visa
    Flexible hours
    Shift work
    Day shift

    BOEING

    Berkeley, MO
    2 days ago

  • Senior Software Engineer

    $127k - $142.5k

     ...Senior Software Engineer at BOEING summary: Senior Software Engineer at Boeing's Tapestry Solutions, responsible for designing, developing, testing, and maintaining advanced software systems supporting dynamic mission planning for the U.S. Air Force. The role involves... 
    Permanent employment
    Full time
    Interim role
    Worldwide
    Relocation
    Visa sponsorship
    Work visa
    Relocation package
    Flexible hours
    Shift work
    Day shift

    BOEING

    Hazelwood, MO
    2 days ago

  • Sr. SRE/ Performance Engineer

    Based on the skills the Hiring Manager listed as priority, outside of a true Performance Engineer, I am thinking the best profile will be a DevOps Engineer/SRE. Sr. Performance Engineer Hybrid - 3 days onsite (O'Fallon, MO) In-person interview required ...
    Contract work

    ShiftCode Analytics

    O Fallon, MO
    2 days ago

  • Solutions Engineer

     ...business needs. This position offers a hybrid schedule with on-site work in Chesterfield, Missouri. Application Development Design, develop, and implement multi-tier, multi-platform applications.Convert legacy systems to modern architectures like .NET or .NET Core,... 
    Weekly pay
    Full time
    Temporary work
    Chesterfield, MO
    3 days ago

  • Site Reliability Engineer

    $75k - $125k

     ...robust, secure, and efficient operations. The candidate should be able to automate daily activities, support deployment pipelines, develop observability for the cloud platforms. This role requires expertise in cloud concepts, advanced DevOps practices, CI/CD pipelines,... 
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    1 day ago