IOS Developer
Reuben Cooley, Inc.
RequiredEducation:
• BachelorsDegreeincomputerscience,Engineeringorarelatedsubject RequiredExperience/skills:
• ProficientinnativeiOSdevelopmentusingSwiftandframeworkslikeSwiftUIorUIKit,withasolidunderstandingofObjective-C.Alsoexperiencedincross-platformmobiledevelopmentusingtoolssuchasReactNativeorXamarin
• IntermediateexperienceusingJava/Spring/RESTfulAPIs
• Intermediateexperienceconductingunit,component,integratedandfunctionaltests(e.g.Junit,Mockito,Cucumberetc.)
• PossessesiOSapp/SDKdeploymentcompleteunderstanding
• KnowledgeofiOSarchitectureandmobiledevelopmentlifecycle
• Experiencewiththird-partylibrariesandAPIs
• Workingknowledgeofthegeneralmobilelandscape,architectures,trends,andemergingtechnologies
• Experiencewithofflinestorage,threading,andperformancetuning
• UnderstandingofApple'sdesignprinciplesandinterfaceguidelines
• Knowledgeoflow-levelC-basedlibrariesispreferred
• FamiliaritywithcloudmessageAPIsandpushnotifications
• ProficientunderstandingofcodeversioningtoolsGit,Bitbucket
• Experiencewithcontinuousintegration
• Youareaproblemsolverwithgoodanalyticalskills
• YouhaveaportfolioofreleasedapplicationsontheAppStore
• Softspoken,teamplayerandshouldbegoodincommunicationskillsandnegotiations
• ProficientinnativeiOSdevelopmentusingSwiftandframeworkslikeSwiftUIorUIKit,withasolidunderstandingofObjective-C.
• Alsoexperiencedincross-platformmobiledevelopmentusingtoolssuchasReactNativeorXamarin
• IntermediateexperienceusingJava/Spring/RESTfulAPIs
• KnowledgeofiOSarchitectureandmobiledevelopmentlifecycle DesiredSkills:
• KnowledgeofotherwebtechnologiesandUI/UXstandards
• Knowledgeofsecuritymodels,encryptionstandardsandalgorithms Role:
Theprimarypurposeofthisroleistodevelopanddeliverbest-of-breedauthenticationproductsfore-commercetransactionalusecasesthatwilldriveuptakeandpenetrationfortheproductsandrevenueforClient.Theauthenticationproductsthatfallwithinthisrole'sresponsibilitiesareIDCheck,TokenAuthenticationServiceandTokenAuthenticationFramework. Responsibilities:
• Architect,designandbuildnativeandcrossplatformapplications
• Collaboratewithcross-functionalteamstodefine,design,andshipnewfeatures
• Unit-testcodeforrobustness,includingedgecases,usability,andgeneralreliability
• Workonfeaturedevelopment,defectfixesandimprovingapplicationperformance
• ContinuouslyClient,evaluate,andimplementnewtechnologiestomaximizedevelopmentefficiency
• Designandbuildlibraries/frameworks/applicationsfortheiOSplatform
• Ensuretheperformance,quality,andresponsivenessofapplications
• Supportingtheentireapplicationlifecyclefromconcepttodesign,testing,release,andsupport
• WritingcleanandefficientcodeforiOSapplications
• WorkwithAgilemethodologies
• BachelorsDegreeincomputerscience,Engineeringorarelatedsubject RequiredExperience/skills:
• ProficientinnativeiOSdevelopmentusingSwiftandframeworkslikeSwiftUIorUIKit,withasolidunderstandingofObjective-C.Alsoexperiencedincross-platformmobiledevelopmentusingtoolssuchasReactNativeorXamarin
• IntermediateexperienceusingJava/Spring/RESTfulAPIs
• Intermediateexperienceconductingunit,component,integratedandfunctionaltests(e.g.Junit,Mockito,Cucumberetc.)
• PossessesiOSapp/SDKdeploymentcompleteunderstanding
• KnowledgeofiOSarchitectureandmobiledevelopmentlifecycle
• Experiencewiththird-partylibrariesandAPIs
• Workingknowledgeofthegeneralmobilelandscape,architectures,trends,andemergingtechnologies
• Experiencewithofflinestorage,threading,andperformancetuning
• UnderstandingofApple'sdesignprinciplesandinterfaceguidelines
• Knowledgeoflow-levelC-basedlibrariesispreferred
• FamiliaritywithcloudmessageAPIsandpushnotifications
• ProficientunderstandingofcodeversioningtoolsGit,Bitbucket
• Experiencewithcontinuousintegration
• Youareaproblemsolverwithgoodanalyticalskills
• YouhaveaportfolioofreleasedapplicationsontheAppStore
• Softspoken,teamplayerandshouldbegoodincommunicationskillsandnegotiations
• ProficientinnativeiOSdevelopmentusingSwiftandframeworkslikeSwiftUIorUIKit,withasolidunderstandingofObjective-C.
• Alsoexperiencedincross-platformmobiledevelopmentusingtoolssuchasReactNativeorXamarin
• IntermediateexperienceusingJava/Spring/RESTfulAPIs
• KnowledgeofiOSarchitectureandmobiledevelopmentlifecycle DesiredSkills:
• KnowledgeofotherwebtechnologiesandUI/UXstandards
• Knowledgeofsecuritymodels,encryptionstandardsandalgorithms Role:
Theprimarypurposeofthisroleistodevelopanddeliverbest-of-breedauthenticationproductsfore-commercetransactionalusecasesthatwilldriveuptakeandpenetrationfortheproductsandrevenueforClient.Theauthenticationproductsthatfallwithinthisrole'sresponsibilitiesareIDCheck,TokenAuthenticationServiceandTokenAuthenticationFramework. Responsibilities:
• Architect,designandbuildnativeandcrossplatformapplications
• Collaboratewithcross-functionalteamstodefine,design,andshipnewfeatures
• Unit-testcodeforrobustness,includingedgecases,usability,andgeneralreliability
• Workonfeaturedevelopment,defectfixesandimprovingapplicationperformance
• ContinuouslyClient,evaluate,andimplementnewtechnologiestomaximizedevelopmentefficiency
• Designandbuildlibraries/frameworks/applicationsfortheiOSplatform
• Ensuretheperformance,quality,andresponsivenessofapplications
• Supportingtheentireapplicationlifecyclefromconcepttodesign,testing,release,andsupport
• WritingcleanandefficientcodeforiOSapplications
• WorkwithAgilemethodologies
Vacancy posted 1 day ago
Similar jobs that could be interesting for youBased on the IOS Developer in O Fallon, MO vacancy
- ...Job TitleThe primary purpose of this role is to develop and deliver best-of-breed authentication products for e-commerce transactional... ...a related subjectRequired Experience/SkillsProficient in native iOS development using Swift and frameworks like SwiftUI or UIKit, with...Suggested
- ...that will be tasked to build a new product in the Digital Payment Space. As part of an exciting, fast paced environment developing payment solutions in the mobile and e-commerce space, this position will lead software engineering projects, develop software and...SuggestedWork experience placement
- ...Data Analyst PRIMARY RESPONSIBILITIES Develop both internal and external dashboards using Qlik Work closely with team members from across Mastercard to identify functional and system requirements Work with team in resolving any issues that arise with dashboards...Suggested
$60k - $135k
...Job Title: Mainframe Developer City: O Fallon State/Province: Missouri Posting Start Date: 8/28/26 Wipro Limited (NYSE: WIT, BSE: 507685, NSE: WIPRO) is a leading technology services and consulting company focused on building innovative...SuggestedMinimum wageLocal area- ...networking, DNS, SSL inspection, and identity layers. • Enforce enterprise security policies and support Zero Trust initiatives. • Develop documentation such as SOPs, architecture diagrams, and configuration standards. • Collaborate with Network, Security, Cloud, and...SuggestedContract work
- ...are responsible for ensuring that our platform is stable and healthy. We break down barriers to running our products by fostering developer run ownership and empowering developers to build resilient products. We support our developers during the application build phase...
$96k - $163k
Senior Site Reliability Engineer, Performance Engineering Payment Optimization unifies multiple Mastercard capabilities to improve transaction success, reduce avoidable declines, and simplify issuer, acquirer, and merchant interactions across the payment lifecycle. ...Full timePart timeFlexible hours- ...Essential Duties and ResponsibilitiesDevelop firmware against system requirements for embedded systems applied to refrigeration products.Develop, maintain and improve algorithms and firmware for embedded systems.Documents firmware by producing flow charts, state machines, and...Full timeWork at officeShift work
$96k - $163k
...cloud infrastructure engineering, Infrastructure as Code (IaC), CI/CD, software automation, security, reliability engineering, and developer enablement. The successful candidate will drive platform modernization, establish engineering standards, improve operational...Full timePart timeWorldwideFlexible hours$122k - $207k
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 timePart timeWorldwideFlexible hours- ...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...
- ...Card Company, is looking for a Lead Site Reliability Engineer for their Fallon, MO location. Responsibilities: This job is a developing subject matter expert in the Site Reliability Engineering area, influencing stakeholders and applying advanced knowledge to drive...
- Job Title Mastercard Direct Services Program About the Role Possesses a strong knowledge of programming, tools, architecture patterns, and BDD. Ensures performance and scalability for applications and platforms responsibilities. Works closely with software engineers...
- As a Senior Site Reliability Engineer at Mastercard, you’ll drive the performance, reliability, and scalability of mission-critical, cloud-native payment platforms. You will design and implement robust monitoring, alerting, and observability solutions, automate infrastructure...
- Mastercard seeks a Senior Site Reliability Engineer in Financial Services within the IT & Data Management team. You’ll design, build, and optimize resilient, secure, and scalable platforms that power global payments. Partner with software and data teams to improve reliability...
- Mastercard is seeking a Senior Site Reliability Engineer to enhance reliability, scalability, and performance of our critical IT & Data Management platforms. You will design resilient architectures, automate deployments, and champion observability to ensure always-on services...
- As a Site Reliability Engineering Intern at Mastercard, you will support the design, monitoring, and operation of large-scale, cloud-based systems that power secure, global payments. Working alongside experienced SREs and software engineers, you’ll help maintain production...Internship
- Mastercard is seeking a Site Reliability Engineer II to enhance the reliability, scalability, and performance of critical IT systems. In this role, you will design and implement robust monitoring, automation, and incident response processes to support innovative, user‑focused...
- ...Sr. Software EngineerWe are seeking a skilled Software Developer with a strong background in Java, Spring Boot, Microservices, and Kafka. The ideal candidate will have a minimum of 5 years of experience in software development, with a proven track record of delivering...
- ...• Define requirements for new applications and customization adhering to MasterCard standards, processes and best practices. • Develop, customize, and test applications to integrate to MasterCard’s specifications. • Provide leadership, mentoring, and technical training...Work experience placement
- ...like Jenkins, Maven, Gradle, Chef, and Sonar 3. GenAI / AI-Enabled Engineering Ability to leverage GenAI tools to improve developer productivity Apply AI-assisted coding, testing, documentation, and troubleshooting Explore practical GenAI use cases for...Work experience placement3 days per week
- ...Agile team in the continuous validation of web applications, system to system interfaces and complete software solutions. Design and develop test automation scenarios to validate system to system interfaces and complete software solutions (for API and UI tests). Interact...
- ...dashboard deploymentsMaintain Security Rules Add/Remove/Modify as neededPeriodic evaluation of clusters with team managementDesign, develop and implement datamarts with quality and integrity at the top of mind to support our productsCreate documentation to support...Contract workRemote work
- ...Under a new CEO, *** is committed to a transformative journey with 'Scale @ Speed' as our guiding principle. Job Title: Software Developer (Contractor) Location: OFallon, MO, USA Job Summary: We are seeking a skilled Software Developer with a strong background...Hourly payContract workFor contractors
- ...capabilities and effectiveness of solutions Design effective rule strategies to identify and provide solutions for customers Develop and implement rule changes in an agile environment Validate rule changes against transactions data and ensure quality is...Long term contractWork experience placementLocal areaRelocationFlexible hours
- ...EngineerLocation: O'fallon, MODuration: 12+ monthsPrimary Skills:C# developmentFront end/angularAPIDesired Skills:SQLBatchRole:Plan, design and develop technical solutions and alternatives to meet business requirements in adherence with MasterCard standards, processes and best...
- ...experiences of our global workforce, we continue to drive innovation at scale. The Pricing & Billing Resource Center (PBRC) team develops and operates business-critical, API-driven platforms built on Java and Spring technologies. These platforms deliver highly...Full timePart timeFlexible hours
- ...• Support SharePoint migrations and upgrades. • Integrate SharePoint with other Microsoft 365 services. • Develop and support solutions using SharePoint Framework (SPFx). • Automate business processes with Power Automate and Power Apps....
- ~ What are your top 3 required technical skills? # Understand Continuous Integration (CI) and Delivery (CD) concepts, and capabilities to support automation, pipelines, virtualization, and containerization # Fluency in one or more languages like Scala, Java...
- ...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, theories,...For contractorsWork experience placementBank staffFlexible hours
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to IOS Developer. Be the first to apply!


