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  • Supportable Low Observable (SLO) Lead Engineer

    $136.85k - $185.15k

     ...Supportable Low Observable (SLO) Lead Engineer Company: The Boeing Company The Boeing Defense, Space & Security (BDS) -...  ...design features Analyze customer and system requirements to develop architectural approaches and detailed specifications for various... 
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    Permanent employment
    Immediate start
    Relocation
    Visa sponsorship
    Work visa
    Relocation package
    Flexible hours
    Shift work

    Boeing

    Berkeley, MO
    2 days ago

  • Lead Site Reliability Engineer

    $122k - $207k

     ...Science or related technical field involving coding (e.g., physics or mathematics), or...  ...accomplished by closely partnering with developers to design, build, implement, and support...  ...monitoring capabilities? • Do you have a low tolerance for manual work and look to automate... 
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    Mastercard

    O Fallon, MO
    21 hours ago

  • Lead Site Reliability Engineer

    $122k - $207k

     ...and auditable by design Operated through repeatable, scalable, low‑toil processes You will provide continuous feedback loops into...  ...operational mindset, influencing architecture and design before code reaches production Enterprise‑grade risk management, controls,... 
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    Mastercard

    O Fallon, MO
    21 hours ago

  • Principal Software Engineer

    $170k - $281k

     ...strategy-only role. You will actively design, code, prototype, and validate core platform...  ...implement large scale distributed systems. Develop reusable services, patterns, and...  ...Streaming-first mindset — experience with low-latency pipelines Proven outcomes — delivers... 
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    Part time
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    MasterCard

    O Fallon, MO
    21 hours ago

  • Senior Principal Site Reliability Engineer

    $200k - $330k

     ...track record of building high-availability, low-latency financial platforms with rigorous...  ...accomplished by closely partnering with developers to design, build, implement, and support...  ...or related technical field involving coding (e.g., physics or mathematics), or equivalent... 
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    Mastercard

    O Fallon, MO
    21 hours ago

  • Lead Software Engineer

    $140k - $231k

     ...delivery ecosystem and delivering a world class developer experience. We are seeking a Lead...  ...solutions • Define high- and low-level design artifacts, including APIs, data...  ...TypeScript) • Drive engineering excellence in coding standards, modular design, and... 
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    MasterCard

    O Fallon, MO
    3 days ago

  • Software Engineer II

    $92k - $147k

     ...billions of payment transactions. The role is hands-on. You will write code, run prototypes, and use AI coding tools every day to ship faster...  ...•You build for scale. Hands-on experience with high-throughput, low-latency systems — ideally streaming or real-time decisioning. •... 
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    Dynamic Yield

    O Fallon, MO
    21 hours ago

  • Java Dev/Architect

     ...Senior Architect/Expert Developer This is a Level 5 role, one of the most senior level roles...  ...is very high volume and also extremely low latency because folks can be sitting in...  ...architect type person. Will get into the code and write it. And a broad understanding of... 
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    Local area
    Relocation
    2 days per week

    Samprasoft

    O Fallon, MO
    1 day ago

  • Senior Site Reliability Engineer

    $96k - $163k

     ...all things automation? - Do you have a low tolerance for manual work and look to automate...  ...to run our products by fostering developer run ownership and empowering developers to...  ...Science or related technical field involving coding (e.g., physics or mathematics), or... 
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    Mastercard

    O Fallon, MO
    21 hours ago

  • Senior Site Reliability Engineer

    $96k - $163k

     ...out how something works? Do you have a low tolerance for manual work and look to...  ...accomplished by closely partnering with developers to design, build, implement, and support...  ...Ops pipeline: Support deployments of code into multiple lower environments.  Supporting... 
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    Immediate start
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    Mastercard

    O Fallon, MO
    21 hours ago

  • Staff Software Engineer / Architect - Java Modernization (AWS / Kubernetes)

     ...a scale Strong grasp of performance tuning, JVM behavior, and low-latency systems Ability to operate as both architect and hands...  ...etc.) Familiarity with CI/CD pipelines and infrastructure-as-code Background in financial services, payments, or high-throughput... 
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    Yantran LLC

    O Fallon, MO
    2 days ago

  • Oracle Developer

     ...Oracle Database Developer Analyze user requirements, develop functional specifications and...  ...Oracle application systems. Develop low-level technical specifications and detailed...  ...for improvement recommendations. Ensures code quality, performs code reviews, and mentors... 
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    Software Technology Inc

    Wildwood, MO
    21 hours ago

  • Lead, Platform Engineering

    $122k - $207k

     ...processes and best practices for virtual infrastructure solutions Develop, customize, and test applications to integrate to MasterCard's...  ..., and runbook automation. Implement Infrastructure as Code (IaC) and policy‑driven automation to ensure consistent, repeatable... 
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    Full time
    Temporary work
    Part time
    Work experience placement
    Worldwide
    Flexible hours

    Dynamic Yield

    O Fallon, MO
    4 days ago

  • Mid Software Developer

    Summary Mid Software Developer O’Fallon, IL Are you ready to enhance your skills and build your career in a rapidly evolving business...  ...team. The Backend Software Developer will modify existing GOTS code and integrate open‑source software solutions for display and analysis... 
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    Work at office
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    Chenega Corporation

    O Fallon, MO
    3 days ago

  • Front End UI Developer (hybrid-remote)

     ...About the job Front End UI Developer (hybrid-remote) *24 month contract to hire role (hybrid-remote) Role o Deliver solutions...  ...sessions. Perform requirements and design reviews, peer code reviews and PCI security reviews to ensure compliance with standards... 
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    Nanosoft Consulting

    O Fallon, MO
    1 day ago

  • Cloud DevOps Engineer

    $95.7k - $159.7k

     ...design, implementation and continuous improvements of complex, low latency, high throughput software that makes the LSEG...  ...responsibilities: * Design, implement and manage infrastructure as code using Terraform * Develop and maintain CI/CD pipelines using tools like Gitlab,... 
    Part time
    Internship

    LSEG (London Stock Exchange Group)

    Creve Coeur, MO
    1 day ago

  • Software Engineer, Back End Java Developer

     ...Software Engineer Back end developer. Message/event based architecture experience preferred but not mandatory Required Experiences/...  ...integration tier technologies. Background developing high volume low latency applications, with focus on performance and resiliency... 

    Samprasoft

    O Fallon, MO
    1 day ago

  • Full Stack Java Developer

     ...Title: Full Stack Java Developer Location: Ofallon, MO 63368 Type: Contract Duration: Long Term Project...  ...will have to write scalable, robust, and easy-to-maintain code, and will be required to translate software requirements into high... 
    Contract work

    NR Consulting

    O Fallon, MO
    3 days ago

  • Full Stack Java Developer

     ...Onsite Project Scope: Seeks a Senior Software Developer who will be a crucial part of our software team. The selected...  ...candidate will have to write scalable, robust, and easy-to-maintain code, and will be required to translate software requirements into... 

    Procyon TS

    O Fallon, MO
    21 hours ago

  • Senior Software Engineer - Java Full Stack Engineer

    $115k - $184k

     ...lead in overall architecture, design and produce a high-quality code using different languages. Role: • This position is a...  ...functional guidance, advice, and/or training to other application developers. • Responsible for designing, developing, testing, delivering... 
    Full time
    Part time
    Work experience placement
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    5 days ago

  • Lead Software Engineer (Azure Platform Engineering)

    $140k - $231k

     ...s Azure Platform Engineering team. The team is responsible for developing the best of breed Azure Platform capabilities to application development...  ...solutions to manage Mastercard’s Azure infrastructure via code. • Engage and improve the lifecycle of the Azure platform and... 
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    21 hours ago

  • Salesforce Developer

     ...Jr Salesforce Technical Developer Location: O’Fallon, MO – (Day one onsite) ~5 Years’ experience in building solutions with at...  ...Cloud ~ Developer exposure to LWC and Aura components. Apex coding practices. ~ Deep experience with the software development lifecycle... 

    Zortech Solutions

    O Fallon, MO
    21 hours ago

  • Lead Full Stack Developer

     ...software for combating scammers? The Transaction Security team develops new products for Mastercard's fraud prevention platform. We...  ...class backend and consumer-facing features. Role Ensures code design and its quality for enterprise application Designs highly... 

    Samprasoft

    O Fallon, MO
    1 day ago

  • Lead Software Engineer (C/C++)

    $140k - $231k

     ...strategy for each initiative • Create technical designs and assign work to developers • Develop complex stories in C and write unit tests in C++ (Google Test) • Be a quality gate by leading code and design reviews • Collaborate with other Principals and Leads to... 
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    3 days ago

  • Jr Cloud Data Engineer

     ...databases for complex application systems. Develop data platform components in a cloud and on...  ...end-to-end solutions. Develop low-level technical specifications and detailed...  ...issues and new build deployments. Ensures code quality, performs code reviews, and mentors... 

    Samprasoft

    Wildwood, MO
    1 day ago

  • Lead F5 Network Engineer Load Balancing

    $112k - $187k

     ...Architecture teams in the development of new technologies with high & low level designs • Comply with current standards & best...  ...externally • Methodical problem resolving skills and mastery of developing high level and detailed network designs; solid web applications... 
    Full time
    Part time
    Work at office
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    4 days ago

  • Lead Cloud Solution Architect- Hybrid Cloud

    $140k - $175k

     ...acumen with full-stack technical know-how to develop innovative solutions for our clients' most...  ...Lead the creation of High-Level and Low-Level Designs for areas of expertis Deliver...  ...infrastructure using Infrastructure as Code (i.e. ARM/Bicep, Terraform, Ansible), application... 
    Full time
    Local area
    Flexible hours
    Shift work

    World Wide Technology

    Maryland Heights, MO
    2 days ago

  • Principal Software Engineer, Data Architecture

    $170k - $281k

     ...for modernizing data platforms across a hybrid cloud and on premises environment, supporting both high throughput batch processing and low latency, real time use cases. Your leadership will enable Mastercard’s “edge everywhere, run anywhere” strategy, allowing products... 
    Full time
    Part time
    Worldwide
    Flexible hours

    MasterCard

    O Fallon, MO
    21 hours ago

  • Azure Platform Engineer

     ...Responsibilities: Total 10+ years and experience in working with Azure cloud based environment Experience with infrastructure as code tools such as Terraform Experience with DevOps tools and technologies such as Jenkins, Kubernetes Required skills: Creating and... 
    Long term contract

    Keylent Inc

    O Fallon, MO
    21 hours ago

  • Senior Java Developer : Mastercard

     ...Software Engineer Interview: Coding Test + F2F This is hybrid from day-1 (Need only local candidates) Visa: USC, GC, GC EAD, H4,...  ...actively works to improve experience and metrics in ownership area Develop complete understanding of end-to-end technical architecture and... 
    Contract work
    Local area

    ShiftCode Analytics

    O Fallon, MO
    4 days ago