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- ...Software Engineer I, Launch Program 2026 Mastercard works to connect and power a sustainable and inclusive global economy. We are... ...our customers. We are looking for talented software engineers to develop advanced technologies and applications that are revolutionizing...SuggestedWork experience placementInternship
MasterCard
O Fallon, MO5 days ago - ...Data Engineer I, Launch Program 2026 Mastercard powers economies and empowers people in 200+ countries and territories worldwide... ...specialize in building high-quality, scalable ETL pipelines, developing robust feature engineering workflows, and creating shared tools...SuggestedFull timePart timeWork at officeWorldwideFlexible hours
Missouri Staffing
O Fallon, MO2 days ago $138k - $221k
...and innovative spirit? The Cloud Data Platforms team is an excellent opportunity for you to design and develop the next wave of data innovation at MasterCard. Our program is leading the efforts to bring our data and analytics expertise into the cloud. We are looking for a...SuggestedFull timePart timeWorldwideFlexible hoursMissouri Staffing
O Fallon, MO1 day ago- ...works to improve experience and metrics in ownership area Develop complete understanding of end-to-end technical architecture... ...implement efficient code Understands and implements Application Programming Interface (API) standards and cataloging to drive API/service...SuggestedContract workLocal area
ShiftCode Analytics
O Fallon, MO4 days ago - ...exciting opportunity for you to join Client's Transaction Switching program and improve authorization transaction time. Authorization sends... ...new technologies and apply it to your team? Have you developed software before - preferably in Java or C/C++? Have you spent...SuggestedH1bLocal areaWorldwide
ShiftCode Analytics
O Fallon, MO4 days ago $100k - $105k
...offshore teams. Req. #873804476 Responsibilities Design and develop Java-based microservices architecture Ensure implementation... ...and AD&D Insurance (Company Provided) Employee Assistance Program Unlimited access to LinkedIn learning solutions Matched 4...SuggestedTemporary workFlexible hoursEPAM Systems Inc
O Fallon, MO3 days ago$200k - $320k
...is a team of specialists and senior engineers who reach across Programs and teams across Mastercard. We extend our reach by sponsoring... ...curated from best practices in other Mastercard teams, or co-developed by A&T and engineers from the Guild. The Role: As an A&T...SuggestedFull timePart timeWorldwideFlexible hoursMasterCard
O Fallon, MO2 days ago$72k - $115k
...our customers. We are looking for talented software engineers to develop advanced technologies and applications that are revolutionizing... ...join a Company that offers a competitive benefits-and rewards program that attracts, develops, and retains the most talented...SuggestedFull timePart timeWorldwideFlexible hoursMasterCard
O Fallon, MO2 days ago$115k - $184k
...your career, we'd love to hear from you. Role Hands-on developer who writes high quality, secure code that is modular,... ...clean, efficient, and maintainable code using object-oriented programming (OOP) principles and modern frameworks. Mentor junior engineers...SuggestedFull timePart timeWorldwideFlexible hoursMissouri Staffing
O Fallon, MO3 days ago- Job Title: Junior Email Marketing Developer Please read the information in this job post thoroughly to understand exactly what is expected... ...SQL * Basic knowledge of Microsoft Excel. * Experience in programming languages (JavaScript, Python, etc.) a plus Work...SuggestedFull timeApprenticeshipWork at officeLocal areaFlexible hours
Automotive Product Consultants, LLC
O Fallon, MO12 hours ago - Job Title: Senior Email Marketing Developer The following information provides an overview of the skills, qualities, and qualifications... ...* 401(k) matching * Dental insurance * Employee assistance program * Health insurance * Life insurance * Paid parental leave...SuggestedFull timeApprenticeshipWork at officeLocal areaFlexible hours
Automotive Product Consultants, LLC
O Fallon, MO23 hours ago $138k - $221k
...Platforms, or Product bundles Work with business/product owners to develop and deliver on new services to introduce new products and... ...Proactively share and seek knowledge within their Guild/Program to drive reuse of patterns/libraries/practices and enhance productivity...SuggestedFull timePart timeWorldwideFlexible hoursMasterCard
O Fallon, MO1 day ago$92k - $147k
...potential. Title and Summary Software Engineer II - iOS Developer Software Engineer II: Who is Mastercard? Mastercard is... ...(preferred): • Basic to intermediate understanding of Swift programming language • Exposure to SwiftUI and a willingness to deepen knowledge...SuggestedFull timePart timeWorldwideFlexible hoursMasterCard
O Fallon, MO3 days ago- ...grade Java applications, design patterns, and performance optimization. # Microservices and REST API Proficiency: Skilled in developing web services, particularly microservices architectures, and REST APIs. This indicates a strong understanding of how to build,...SuggestedFull time
Veracity
O Fallon, MO3 days ago $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...SuggestedFull timePart timeWorldwideFlexible hoursMasterCard
O Fallon, MO3 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...Work at office3 days per week
Veracity
O Fallon, MO1 day 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 ...
MasterCard
O Fallon, MO10 hours ago $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 timePart timeWorldwideFlexible hoursShift workMasterCard
O Fallon, MO2 days ago- ...development with deep experience in Java, microservices, and cloud-native technologies. This is a highly technical role ideal for senior developers or leads passionate about solving complex problems in a fast-paced environment. Key Responsibilities: Design, develop, and...Full timeLocal area
Veracity
O Fallon, MO4 days ago - ...-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 testing. Biggest thing will be confidence with reading code and...Local area
ShiftCode Analytics
O Fallon, MO4 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 ofRemote work
Samprasoft
O Fallon, MO3 days ago - ...: 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......Contract work
Staffing the Universe
O Fallon, MO4 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 ...Local area
RIT Solutions
O Fallon, MO2 days 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...Local area
RIT Solutions
O Fallon, MO2 days ago - 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...
Yantran LLC
O Fallon, MO4 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)...
RIT Solutions
O Fallon, MO1 day ago $85.15k - $153.93k
...Aero team has an opening for an experienced Full Stack Software Developer r to modify existing code and integrate software solutions for... ...deliver new features within an Agile construct. Participate in program Agile software development initiatives (standup, planning,...Work at officeLeidos
Saint Charles, MO2 days ago$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...Full timePart timeFlexible hoursMasterCard
O Fallon, MO5 days ago- 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, MO1 day ago - ...culture conversations, reinforcing a unified and accountable security culture across global offices. Mastercard's summer internship program provides emerging talent with projects that will enhance skills as well as contribute to the department's goals and objectives. In...Summer workInternshipSummer internshipWork at office
MasterCard
O Fallon, MO1 day ago
