UI Jobs in O Fallon, MO

401 - 420 of 573 Jobs

UX Researcher - Emerging Talent Intern (July 2025 - December 2025)Job Title - UX Researcher - Emerging Talent Intern (July 2025 - December 2025)

ServiceNow, Inc.Company Name - ServiceNow, Inc.

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Remote or San Diego, California, USA

Full-time

Company Description It all started in sunny San Diego, California in 2004 when a visionary engineer, Fred Luddy, saw the potential to transform how we work. Fast forward to today - ServiceNow stands as a global market leader, bringing innovative AI-enhanced technology to over 8,100 customers, including 85% of the Fortune 500 . Our intelligent cloud-based platform seamlessly connects people, systems, and processes to empower organizations to find smarter, faster, and better ways to work. But thi

Senior Software QA EngineerJob Title - Senior Software QA Engineer

PsiQuantumCompany Name - PsiQuantum

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Remote or Palo Alto, California, USA

Full-time

Quantum computing holds the promise of humanity's mastery over the natural world, but only if we can build a real quantum computer. PsiQuantum is on a mission to build the first real, useful quantum computers, capable of delivering the world-changing applications that the technology has long promised. We know that means we will need to build a system with roughly 1 million qubits that supports fault tolerant error correction within a scalable architecture, and a data center footprint. By harnes

Software Engineering Senior Advisors - HybridJob Title - Software Engineering Senior Advisors - Hybrid

CignaCompany Name - Cigna

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Remote or Franklin, Tennessee, USA

Full-time

The job profile for this position is Software Engineering Senior Advisor which is a Band 4 Career Track Role with eviCore healthcare MSI, Inc. Responsibilities: Deliver software solutions that align to the end user and create software solutions and deliver backlog items in microservice solutions, as well as platform components and packages for use by other development teams. Build modern, architecturally sound software components, tools, and applications. Collaborate with peers to deliver quali

Director, UX Research, AIJob Title - Director, UX Research, AI

ServiceNow, Inc.Company Name - ServiceNow, Inc.

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Remote or Santa Clara, California, USA

Full-time

Android Developer with Native (Front End)Job Title - Android Developer with Native (Front End)

Techno-Comp, Inc.Company Name - Techno-Comp, Inc.

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Remote

Contract, Third Party

Job Title: Android Developer with Native (Front End) Work Location: NYC, NY (REMOTE) Duration: Long Term Job Description: We are looking for a driven mobile developer to help us continue to build our flagship Android and iOS applications. In addition, this position will play a significant role in expanding our SDK which enables our customers to build novel telecom experiences inside their own mobile applications. We are looking for someone with: Req: Android, Java, Kotlin, Swift A college or uni

Full Stack Engineer(Java)-Data Modeling - VP - TAMPAJob Title - Full Stack Engineer(Java)-Data Modeling - VP - TAMPA

CitiCompany Name - Citi

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Remote or Tampa, Florida, USA

Full-time

Citi: Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Citi provides consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management. As a bank with a brain and a soul, Citi creates economic value that is systemically r

Sr Consultant, User Experience (Product Design Lead)Job Title - Sr Consultant, User Experience (Product Design Lead)

Nationwide Mutual Insurance CompanyCompany Name - Nationwide Mutual Insurance Company

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Remote or Columbus, Ohio, USA

Full-time

If you're passionate about helping a Fortune 100 company drive their strategy forward through innovative product development and advancing strategic partnerships to protect customers (and their pets), then Nationwide is the place for you! At Nationwide , "on your side" goes beyond just words. Our customers are at the center of everything we do and we're looking for associates who are passionate about delivering extraordinary care. If you're passionate about helping a Fortune 100 company drive t

WordPress Full Stack DeveloperJob Title - WordPress Full Stack Developer

Mass General BrighamCompany Name - Mass General Brigham

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Remote or Somerville, Massachusetts, USA

Full-time

Site: Mass General Brigham Incorporated At Mass General Brigham, we know it takes a surprising range of talented professionals to advance our mission-from doctors, nurses, business people and tech experts, to dedicated researchers and systems analysts. As a not-for-profit organization, Mass General Brigham is committed to supporting patient care, research, teaching, and service to the community. We place great value on being a diverse, equitable and inclusive organization as we aim to reflect t

IRS Cleared Information Technology ProfessionalsJob Title - IRS Cleared Information Technology Professionals

Delmock Technologies, IncCompany Name - Delmock Technologies, Inc

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Remote or Lanham, Maryland, USA

Full-time

Help us make our nation stronger! We are looking for talented IT professionals to help us support the IRS, our long-standing client, with their IT Modernization needs. Looking for: Program Managers, Project Managers, Technical Integrators, Business Analysts (Product Planning), Delivery Managers, Technical Architects, Full Stack Developers, Automation Leads, Back End Developers, Front End Developers, Sr. System Engineers, Sr. Business Analysts, Technical Architects, Security Test Engineers, Commu

ServiceNow ITOM DeveloperJob Title - ServiceNow ITOM Developer

Mass General BrighamCompany Name - Mass General Brigham

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Remote or Somerville, Massachusetts, USA

Full-time

Senior Salesforce Application Developer, remoteJob Title - Senior Salesforce Application Developer, remote

steampunkCompany Name - steampunk

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Remote

Full-time

QualificationsRequired: Bachelor's degree from an accredited institution and 10+ years of total experience5+ years of experience with Salesforce developmentFunctional knowledge of Salesforce.com data structure and understanding of how to leverage the tool to meet complex process and reporting requirementsMust have proven knowledge and practical application of LWC, Apex, and the Salesforce APIsEligible to obtain and maintain and government Public Trust security clearanceSalesforce development and

Front-End DeveloperJob Title - Front-End Developer

Resource 1Company Name - Resource 1

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Remote

Contract

Resource 1 is seeking a Front-End Developer for a remote 6-month contract position. Selected individual will play a crucial role in designing, developing and implementing user-facing features for web applications. Will collaborate closely with cross-functional teams, including designers, back-end developers and product managers to deliver high-quality, responsive and intuitive user interfaces. Responsibilities: Develop and implement user-facing features for web applications using HTML, CSS and J

Sr Web Application DeveloperJob Title - Sr Web Application Developer

Miracle Software Systems, Inc.Company Name - Miracle Software Systems, Inc.

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St. Peters, Missouri, USA

Contract

#W2 only Sr Web Application Developer St. Peters, MO Long Term Skills: Azure, Angular, CSS, HTML, JavaScript, JQuery, .Net MSSQL, TDD Responsibilities: 5+ years as a professional full stack web/interactive designer/developer.Expert knowledge in HTML, CSS, and Javascript.Expert knowledge of Microsoft .NET Framework and .NET Core, as well as Visual Studio.Expert knowledge of Microsoft Web API.Expert knowledge of Microsoft Entity Framework and Microsoft SQL Server, and general database structures

OutSystems DeveloperJob Title - OutSystems Developer

SynergisticITCompany Name - SynergisticIT

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Remote

Contract

Our client, a financial services firm based in Charlotte, NC, is looking for an OutSystems Developer. This position is fully remote. Responsibilities:Lead, design, develop, deploy and maintain applications using OutSystems for Enterprise applications.Primary function will be core development of OutSystems web applications in an environment using Agile methodology.Participate in all phases of the Enterprise application development life cycle as appropriate; including, but not limited to gathering

Mobile Software Engineer- Java/KotlinJob Title - Mobile Software Engineer- Java/Kotlin

CACI International, Inc.Company Name - CACI International, Inc.

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Remote

Full-time

Mobile Software Engineer- Java/Kotlin Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: None Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Local * * * The Opportunity: CACI is currently looking for a Mobile Developer with agile methodology experience to join our BEAGLE (Border Enforcement Applications for Government Leading-Edge Information Technology) Agile Solution Factory (ASF) Team supporting Customs and

Salesforce Developer (remote) (clearance)Job Title - Salesforce Developer (remote) (clearance)

steampunkCompany Name - steampunk

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Remote

Contract

Required: Bachelor's degree from an accredited institution and 10+ years of experience5+ years of experience with Salesforce developmentFunctional knowledge of Salesforce.com data structure and understanding of how to leverage the tool to meet complex process and reporting requirementsMust have proven knowledge and practical application of LWC, Apex , and the Salesforce APIsEligible to obtain and maintain and government Public Trust security clearanceSalesforce development and implementation exp

Web Applications DeveloperJob Title - Web Applications Developer

Collabera LLCCompany Name - Collabera LLC

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St. Peters, Missouri, USA

Full-time

MUST HAVES: 8+ years as a professional full stack web/interactive designer/developer. Bachelor's degree in Computer Science or similar field (or equivalent experience). Expert knowledge in HTML, CSS, and Javascript. Expert knowledge of MS- Office .NET Framework and .NET Core, as well as Visual Studio. Expert knowledge of MS Web API. Expert knowledge of MS Entity Framework and MSSQL Server, and general database structures. Intermediate to Expert JavaScript/Jquery skills. Intermediate knowledge of

SRE/ Performance Engineer (Jmeter/Dynatrace exp. mandatory) - local to OFallon, MO onlyJob Title - SRE/ Performance Engineer (Jmeter/Dynatrace exp. mandatory) - local to OFallon, MO only

Shift Code AnalyticsCompany Name - Shift Code Analytics

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O'Fallon, Missouri, USA

Contract, Third Party

Hi, I hope you are doing well. Please let me know if you are looking for a job change and interested in the below position. Additional Job Information: Title: Sr. Performance Engineer Position Type: Contract Location: O Fallon, MO, United States Description: 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. Hybrid 3 days onsite (O'Fallon, MO) In-person interview required 24 month co

SDET Engineer - LPL- REMOTE- C2CJob Title - SDET Engineer - LPL- REMOTE- C2C

Maintec Technologies IncCompany Name - Maintec Technologies Inc

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Third Party, Contract

SDET Engineer LPL-C2C Location - Austin, TX (Initial Remote) SUBMIT ON Client : LPL Financial Need strong Testng, Selenium, Java Coding experience Interview Process: 3 Rounds of Zoom Video 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 in Java. Test automation experience using open source technologies and/or in-house frameworks -- MU

Sr Web Application DeveloperJob Title - Sr Web Application Developer

Miracle Software Systems, Inc.Company Name - Miracle Software Systems, Inc.

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St. Louis, Missouri, USA

Contract

Miracle Software systems, Inc is Looking for Web Application Developer. Please Go through the below Requirement. Requirement Details:Job role: Sr Web Application DeveloperLocation: St. Peters, MO.Duration: 12+ MonthsResponsibilities:2+ years as a professional full stack web/interactive designer/developer.Bachelor's degree in Computer Science or similar field (or equivalent experience).Expert knowledge in HTML, CSS, and Javascript.Expert knowledge of Microsoft .NET Framework and .NET Core, as wel