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- ...End/Browser level Performance Testing and Optimization exposure C++, UNIX, Shell Scripting Understanding of Java virtual machine and app servers; JVM GC process and its logs; performance metrics on *nix and Windows. Performance tuning experience with RDBMS (Oracle, SQL...Application
Keylent Inc
O Fallon, MO2 days ago - 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 end to end development, performance code...Suggested
Damco
O Fallon, MO2 days ago - Senior Consultant Location: Ofallon, MO (Dayone onsite) We are seeking a highly skilled Senior Consultant with strong expertise in enterprise integration platforms such as Workday Integration, Dell Boomi, MuleSoft, or similar middleware solutions. The candidate will be...Application
Yantran LLC
O Fallon, MO5 days ago - ...of high-quality Java microservices that integrate with modern front-end frameworks and third-party applications. Apply 12-factor app principles to ensure robust, scalable, and cloud-ready solutions. Contribute to all phases of the development lifecycle...ApplicationHourly payH1bWork at officeRelocation3 days per week
Veracity
O Fallon, MO4 days ago - Role:- Senior Consultant Location:- Ofallon, MO (Dayone onsite) We are seeking a highly skilled Senior Consultant with strong expertise in enterprise integration platforms such as Workday Integration, Dell Boomi, MuleSoft, or similar middleware solutions...Application
Yantran LLC
O Fallon, MO5 days ago - ...Engineer O'Fallon, Missouri Job Type: Contract Job Description Summary: Deep experience building and maintaining Power Apps Canvas applications Strong UX instincts with a focus on clean, intuitive, and scalable design patterns Proven ability to...ApplicationContract work
w3r Consulting
O Fallon, MO2 days ago - ...including knowledge of server-side technologies and databases. Understanding of web application optimizations such as progressive web apps, web workers, browser repaints and reflows, performance and memory optimizations, debugging memory leaks, caching, flame graphs....ApplicationH1bLocal areaRelocation
Samprasoft
O Fallon, MO3 days ago - # What are your top 3 required technical skills? # Fluent in Java and object-oriented development # Strong background in test automation with a focus on APIs. # Experience with JUnit and/or TestNG and Selenium WebDriver (Java) # What are a couple...ApplicationWork experience placement
3B Staffing LLC
O Fallon, MO2 days ago - Java Developer Location: O’Fallon, MO – Day 1 Onsite – No Remote Duration: Long Term Passport copy mandatory to submit the profile Job Description: • Overall 8+ years of experience must • Experience in object-oriented programming and concepts • Experienced...ApplicationRemote work
Argyle Infotech
O Fallon, MO2 days ago - Job Opportunity 12-month contract Position Details Non-Sponsored Position – ONLY OPEN TO US CITIZEN, GREEN CARD, or GREEN CARD EAD (NO H4 EAD, H1, etc.) O’Fallon MO This is remote for now until at least end of January and could possibly remain remote, if ...ApplicationContract workRemote workRelocationFlexible hours2 days per week
Samprasoft
O Fallon, MO3 days ago - Lead Software Engineer Job Description: Overview: 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...Application
Omega Solutions Inc
O Fallon, MO2 days ago - Operations & Technology Fraud Products Team Lead Be part of the Operations & Technology Fraud Products team developing new capabilities for MasterCard's Decision Management Platform, which serves as the core for multiple business solutions to combat fraud and validate...ApplicationLocal areaRemote workRelocation
Samprasoft
O Fallon, MO3 days ago - Job Description Job Description Benefits: Bonus based on performance Competitive salary Flexible schedule Free uniforms Opportunity for advancement Paid time off Training & development Summary: We are seeking a highly skilled Managed IT Services...ApplicationWork at officeLocal areaRemote workFlexible hoursAfternoon shift
TeamLogic IT, Lake St Louis, MO
O Fallon, MO10 days ago - ...submit Pull Requests using Git Collaborate with software engineers, test engineers, TPMs, and PMs Ensure that you use 12-factor app design principles in your development. Ensure that the systems you create comply with Client engineering best practices and...Application
Yantran LLC
O Fallon, MO5 days ago - Role • Develop applications using Java/J2EE technologies. • Excellent communication skills with strong Agile knowledge. • Be able to work with Business/Systems Analysts and Quality Engineers in a behavioural driven development environment. • The Ideal candidate...Application
3B Staffing LLC
O Fallon, MO2 days ago - Mastercard Opportunity We are the global technology company behind the world’s fastest payments processing network. We ensure every employee has the opportunity to be a part of something bigger and to change lives. We believe in connecting everyone to endless, priceless...ApplicationRelocation
Samprasoft
O Fallon, MO3 days ago - Advanced JEE Architect/Systems Engineer Looking for an advanced JEE architect/Systems Engineer with extensive experience and willing to take ownership for platform performance from the inception to delivery that will also help support performance for complex financial...Application
Samprasoft
O Fallon, MO3 days ago $159k - $254k
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...ApplicationFull timePart timeWorldwideFlexible hoursMasterCard
O Fallon, MO2 days ago$63 - $90 per hour
...test corpus covering key EDI transaction sets and create a reusable validation harness. Provision Azure resources, including Function Apps, Application Insights, and optionally Service Bus, using Terraform scripts. Implement CI/CD pipelines to automate deployments across...ApplicationTechnology Partners
Wildwood, MO4 days ago- Overview Decision Point Corporation is looking for an Intermediate Software Developer to join our team supporting the Transportation Geospatial Information System (TGIS) at Scott AFB, IL. This position is on a hybrid telecommute model with onsite work at Scott AFB. Duties...ApplicationFor contractorsLocal areaRemote work
Decision Point
O Fallon, MO4 days ago - Interview : Video + F2F Visa : USC, GC This is hybrid from day-1 Lead Java Developer Responsible for identifying and resolving end-to-end performance bottlenecks across distributed systems, Spring Boot services, middleware components...Application
ShiftCode Analytics
O Fallon, MO1 day ago - Job Title 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...Application
Yantran LLC
O Fallon, MO1 day ago - Senior Full Stack Developer (C#.Net) You'll work across the full stack using a range of Client web technologies including C#, ASP.Net Core, entity framework, and AWS producing clean, scalable code, integrating backend data, and designing functional, user-friendly UIs...Application
Infotree Global Solutions
Wildwood, MO2 days ago $59.5 - $85 per hour
...configuration management, and observability fundamentals. Hands‑on experience deploying and debugging Azure‑hosted .NET applications, such as on App Service. Practical experience with Power BI Embedded, including embedding tokens, working with Power BI REST API, JavaScript SDK, and...ApplicationTechnology Partners
Wildwood, MO4 days ago$73.45k - $132.78k
Description Leidos has an exciting opportunity for an Exploitation Specialist/GDAT Software Engineer to join our team in St. Louis, MO. This work requires skills and knowledge to modernize applications to facilitate production operations for customer. These...ApplicationFor contractorsLocal areaImmediate startLeidos
O Fallon, MO3 days ago- Consultant Software Engineer Been the victim of credit card fraud and thought, Vengeance! Yeah, we get it. Want to feel your spine tingle by thwarting credit card fraudsters across the globe? Interested in creating Thats the stuff! software for combating scammers? ...Application
Samprasoft
O Fallon, MO3 days ago - Product Manager Location: O’Fallon MO – manager strongly prefers local candidates, otherwise it must be someone who can relocate ASAP once they get the job (will allow up to 1 month MAX) This job will be 2 days in office, 3 day remote Overview: This team is...ApplicationWork at officeLocal areaImmediate startRemote workRelocation
Samprasoft
O Fallon, MO3 days ago $69.55k - $125.73k
Description Leidos National Solutions has an exciting opportunity for a highly motivated individual to join our team delivering Geospatial solutions through system integration, operations, and sustainment support. In this role, you will assist with standing up and...ApplicationContract workLocal areaImmediate startLeidos
O Fallon, MO5 days ago- Java Developer Location: O’Fallon, MO (Onsite from day 1) Interview Process: 3 rounds will be Zoom Duration: 12+ Months Job Description: Strong Java developer with very good understanding of micro services. Grasp of software engineering skills in modular...ApplicationWork experience placement
Argyle Infotech
O Fallon, MO2 days ago $61.9k - $141k
As a Data Engineer at Booz Allen, you’ll use your skills and experience to help build advanced technology solutions and implement data engineering activities on some of the most mission‑driven projects in the industry. You’ll develop and deploy the pipelines and platforms...ApplicationBooz Allen Hamilton
O Fallon, MO4 days ago
