وظائف مطورينElixir - جدة السعودية

Job Summary<br><br>Tawantech is seeking an experienced and highly skilled React Native Developer to join our technology team in Riyadh, supporting digital banking and financial services solutions.<br><br>The successful candidate will be responsible for designing, developing, enhancing, and maintaining high-performance cross-platform mobile applications using React Native. The role requires strong expertise in modern mobile application architecture, Type Script, React Native ecosystem, API integration, security, performance optimization, and enterprise application development.<br><br>The ideal candidate should have experience working on banking, fintech, financial services, payment, or other highly regulated environments, with a strong understanding of secure mobile application development and enterprise integration.<br><br>tegrations Support integration with banking services such as:Account information Customer onboarding Authentication and authorization Fund transfers Payments Beneficiary management Transaction history Cards and card services Notifications Digital banking services Handle sensitive financial and customer information according to banking security and compliance requirements Work with enterprise integration layers, API gateways, middleware, and backend services where applicable Security<br><br>Implement secure mobile application development practices suitable for banking environments Apply secure authentication and authorization mechanisms such as OAuth 2.0, Open ID Connect, JWT, MFA, and biometric authentication, where applicable Protect sensitive data both in transit and at rest Implement secure storage mechanisms for credentials, tokens, and sensitive information Follow mobile security best practices and organizational security standards Work with security teams to address vulnerabilities identified through security assessments, penetration testing, and code reviews Apply secure coding practices and protect applications against common mobile and API security vulnerabilities Support implementation of certificate/public-key pinning and other mobile security controls where required<br><br>API & Backend Integration<br><br>Consume and integrate REST APIs and JSON-based services Handle API authentication, authorization, error handling, timeouts, retries, and response validation Collaborate with backend developers, API teams, architects, and business analysts to resolve integration issues Troubleshoot API and integration failures across development, testing, and production environments Work with asynchronous operations and real-time communication mechanisms where required<br><br>Performance Optimization<br><br>Analyze and improve application performance, responsiveness, memory usage, and startup time Identify and resolve performance bottlenecks in React Native and Java Script/Type Script code Optimize rendering, state management, API calls, animations, and large data sets Monitor and troubleshoot crashes, ANRs, memory leaks, and other mobile performance issues Ensure applications provide a consistent experience across different device types and operating-system versions<br><br>Native Mobile Development<br><br>Understand the underlying Android and i OS platforms and their interaction with React Native Troubleshoot native build and runtime issues Work with Android Studio, Gradle, Xcode, Cocoa Pods, and native dependencies Develop or maintain native modules when React Native functionality needs to interact with platform-specific capabilities Understand basic Kotlin/Java and Swift/Objective-C concepts sufficient to troubleshoot and integrate native functionality<br><br>Testing & Quality Assurance<br><br>Write and maintain unit, integration, and component tests Work with testing frameworks such as Jest, React Native Testing Library, Detox, or equivalent tools Collaborate with QA teams to resolve defects and improve application quality Participate in functional, regression, integration, performance, and security testing Ensure high-quality code through peer reviews, automated testing, and continuous integration<br><br>CI/CD & Release Management<br><br>Work with CI/CD pipelines for automated mobile application builds, testing, and deployment Support mobile releases through Google Play Console and Apple App Store/Test Flight Work with tools such as Git, Git Hub/Git Lab/Bitbucket, Jenkins, Azure Dev Ops, Git Hub Actions, Fastlane, or equivalent technologies Manage environment-specific configurations for development, testing, staging, and production Support release management, versioning, rollback, and production deployment activities<br><br>Production Support<br><br>Investigate and resolve production incidents affecting mobile banking applications Perform root-cause analysis and implement permanent corrective actions Monitor application crashes, errors,API failures, and performance issues Participate in on-call or incident-management activities when required Work closely with infrastructure, backend, security, Dev Ops, and support teams to resolve critical incidents<br><br>Mandatory Skills<br><br>Strong professional experience in React Native development Strong proficiency in Java Script and Type Script Strong understanding of React.js and React Native architecture Hands-on experience with Redux / Redux Toolkit or equivalent state-management solutions Strong experience integrating REST APIs and backend services Strong understanding of asynchronous programming and API communication Experience with Git and modern source-control practices Experience developing and debugging applications on both Android and i OSStrong understanding of mobile application security Experience with automated testing and debugging Good understanding of CI/CD and mobile application release processes<br><br>Preferred Technical Skills<br><br>Experience with React Navigation Experience with React Native Reanimated / Gesture Handler Experience with Firebase services, push notifications, analytics, and crash reporting Experience with biometric authentication Experience with secure storage solutions such as Keychain/Keystore integrations Experience with deep linking and universal/app links Experience with offline data handling and synchronization Experience with Web Sockets or real-time communication Knowledge of native Android/i OS development Experience with Kotlin, Java, Swift, or Objective-CExperience with automated mobile deployment using Fastlane Experience with Docker, Kubernetes, microservices, or API gateways is an advantage<br><br>Banking Domain Experience<br><br>Candidates with experience in banking, fintech, payments, digital banking, or financial services are highly preferred.<br><br>Experience with one or more of the following will be considered an advantage:<br><br>Digital Banking Applications Mobile Banking Retail Banking Corporate Banking Payments Card Management Fund Transfers Beneficiary Management Customer Onboarding / KYCAuthentication & MFAOpen Banking Payment Gateways Core Banking Integrations API Banking Financial Transaction Processing<br><br>Requirements<br><br>Experience<br><br>Minimum 5 years of professional experience in software/mobile application development Minimum 5 years of hands-on experience in React Native development, with strong expertise in building and maintaining enterprise-grade mobile applications Proven experience developing and supporting i OS and Android applications using React Native Strong experience with Java Script, Type Script, React, Redux/Redux Toolkit, REST APIs, and mobile application architecture Experience working on banking, fintech, payments, digital banking, or financial services projects is highly preferred Experience working in enterprise and highly regulated environments is an advantage Proven experience working with cross-functional teams including Backend, QA, Dev Ops, Security, Business Analysts, and Solution Architects<br><br>Education<br><br>Bachelor's degree in Computer Science, Software Engineering, Information Technology, Computer Engineering, or a related technical field Relevant professional certifications are an advantage

Hungerstation is part of the Delivery Hero Group, the world’s pioneering local delivery platform, our mission is to deliver an amazing experience—fast, easy, and to your door. We operate in around 65 countries worldwide. Headquartered in Berlin, Germany. Delivery Hero has been listed on the Frankfurt Stock Exchange since 2017 and is part of the MDAX stock market index.<br><br>Job Description<br><br>We are looking for a highly talented Senior Backend Engineer to join our Riyadh office. If you are looking for a place where you can gain hands-on experience and create a direct impact, then this may be the place for you! The ideal candidate will have a track record as a significant individual contributor as well as a strong team player, supporting a team, and working closely with the management teams to drive strategic initiatives forward across the region.<br><br>You Will Be Working On<br><br>Take part in architectural decision-making on a platform that is used by millions of people. Actively participate in migrating our monolithic application into Microservices. Playing an active role in designing, improving and most importantly securing the overall backend architecture to support massive growth in users and products without compromise. Deal with Docker containers, Kubernetes manifests, all this on Google Cloud Platform. Coaching and mentoring other team members as a senior member of the team and member of our Backend Chapter. We embrace Design Driven Development, SOLID Principles, Event-driven Architecture, Algorithms and automated tests (unit, integration and functional). Understanding development lifecycle and collaborating with cross-functional and agile teams. Participate in the continuous and common effort of test coverage, refactoring and documentation. Showing off your code review, debugging and investigation skills on a regular basis.<br><br>Qualifications<br><br>5+ years of experience in backend development using GoLang, Ruby on Rails (RoR), Java, or Python. Strong database expertise with Postgre SQL and NoSQL databases. You should have a solid understanding of normal forms, ACID principles, isolation levels, indexing, query optimization, and memory caching (e.g., Redis, Memcached). Proficiency in monitoring, alerting, and logging tools such as Grafana. Deep understanding of software architecture, including Domain-Driven Design (DDD), microservices, Kubernetes, and containerization. Experience with monolithic migration. Strong testing mindset with experience writing unit and integration tests to ensure code quality and reliability. Adaptability & problem-solving skills – Ability to navigate ambiguity, work in a dynamic, fast-paced environment, and make informed decisions.<br><br>Additional Information<br><br>We offer relocation support globally to our permanent employees. Exchange ideas and meet 2000+ colleagues from different teams within Delivery Hero in our active guilds and through our global tech and product community. Develop your skills with your personal educational budget for conferences and external training. Access our e-learning platform Linked In and participate in our various in-house training programs And much more…

About the Role We're looking for a Senior Python Developer to join our team and help build and maintain our voice and telephony platform. You'll work on the core systems that power call handling, voice processing, and real-time telephony features — writing backend code that needs to be fast, reliable, and production-grade. What You'll DoDesign, build, and maintain Python services and backend components for our voice/telephony platform Work with real-time audio/voice data streams and telephony protocols Integrate Python systems with telephony infrastructure (e.g., SIP, RTP, or similar VoIP protocols) Optimize performance and reliability of systems handling live call traffic Collaborate closely with our Asterisk/telephony engineering team to ensure smooth integration between systems Write clean, well-tested, maintainable code and participate in code reviews Troubleshoot and resolve production issues in a voice/telephony environment Contribute to architecture decisions as the platform scales<br>What We're Looking For5+ years of professional experience with Python Experience with backend/API frameworks (e.g., Django, Flask, or Fast API) Familiarity with telephony/VoIP concepts (SIP, RTP, call routing) or a strong interest in learning this domain quickly Experience with real-time or event-driven systems Solid understanding of databases (SQL/NoSQL) and system design Comfortable working with Linux environments Strong debugging and problem-solving skills in production systems Good communication skills and ability to work on-site with the team<br>Nice to Have Prior experience with Asterisk or similar telephony platforms Experience with audio processing or streaming technologies Familiarity with message queues (e.g., Rabbit MQ, Kafka, Redis) Experience with containerization (Docker) and CI/CD pipelines

Job Summary We are looking for a Senior Share Point Server Developer with 7–10 years of hands-on experience designing, developing, customizing, integrating, deploying, and supporting enterprise Share Point on-premises solutions. The candidate should have strong practical experience with Share Point Server 2016, Share Point Server 2019, and Share Point Server Subscription Edition, together with strong expertise in Share Point server-side development, Share Point Framework (SPFx), Microsoft . NET technologies, enterprise integrations, reporting, troubleshooting, and related Microsoft technologies. The role covers the complete development lifecycle and requires sound software engineering practices, technical leadership, and mentoring capabilities.<br>Key Responsibilities• Design, develop, customize, deploy, and maintain enterprise solutions based on Share Point Server 2016, Share Point Server 2019, and Share Point Server Subscription Edition.• Participate in the full development lifecycle: requirements analysis, solution design, estimation, development, testing, deployment, maintenance, support, upgrades, and modernization.• Develop Share Point server-side and client-side solutions using C#, . NET Framework, Share Point Server Object Model, farm/WSP solutions, SPFx, Type Script, React, Java Script, j Query, HTML, and CSS.• Design and implement solutions and integrations using CSOM, JSOM, REST APIs, Share Point Web Services, Server Object Model, databases, APIs, and enterprise systems.• Develop and maintain Microsoft-based applications and integration components using ASP. NET Web Forms, ASP. NET MVC, ASP. NET Core, WCF, WIF, and Windows Workflow Foundation (WF).• Develop SQL-based solutions and integrations using Microsoft SQL Server, including complex queries, stored procedures, functions, and triggers.• Develop and support reporting and BI solutions using SSRS, Power BI, Excel Services, and Performance Point Services.• Create and maintain Power Shell scripts for deployment, configuration, administration, troubleshooting, maintenance, and automation.• Package, deploy, upgrade, and maintain Share Point custom solutions across development, test, UAT, and production environments.• Participate in Share Point upgrade and migration initiatives, including assessment, remediation, and modernization of legacy customizations.• Troubleshoot Share Point applications, integrations, deployments, workflows, performance, permissions, authentication, and environment-related issues.• Conduct code reviews, maintain development standards and technical documentation, and provide technical guidance and mentorship to other developers.<br>Technical Requirments<br>Experience and Education• Bachelor’s degree in Computer Science, Software Engineering, Computer Engineering, Information Technology, or a related technical discipline.• 7–10 years of professional software development experience, with substantial hands-on experience developing enterprise Share Point Server solutions.• Strong practical experience with Share Point Server 2016 and/or Share Point Server 2019; experience with Share Point Server Subscription Edition is highly desirable.• Proven experience working with enterprise or business-critical Share Point solutions in on-premises environments.<br>Share Point Server Development Strong hands-on experience with Share Point Server Object Model, farm solutions and WSP packages, Features and Feature Receivers, custom Web Parts, Application Pages, Event Receivers, Timer Jobs, custom workflows, Lists and Libraries, Content Types, Site Columns, custom forms, Share Point Search customizations, CSOM, JSOM, REST APIs, Share Point Web Services, and sound software architecture, design patterns, coding standards, security, scalability, maintainability, and performance best practices.<br>Share Point Framework and Client-Side Development Strong hands-on experience developing SPFx solutions using Type Script, React, Java Script, j Query, HTML, and CSS, including SPFx development for Share Point Server environments and compatibility considerations across Share Point Server 2016, 2019, Subscription Edition, and Share Point Online. Experience with XML, XSLT, Angular, Vue.js, or related technologies is an advantage.<br>Microsoft . Net Development Strong hands-on experience with C#, . NET Framework, ASP. NET Web Forms, ASP. NET MVC, ASP. NET Core, Windows Communication Foundation (WCF), Windows Identity Foundation (WIF), and Windows Workflow Foundation (WF), with the ability to develop, maintain, troubleshoot, and modernize Microsoft-based enterprise applications integrated with Share Point.<br>Share Point Architecture and Administration Strong understanding of Share Point farms, Web Applications, Site Collections, Service Applications, Application Pools, IIS, Search, Managed Metadata, User Profile Services, Share Point security and permissions, farm topology, Central Administration, Windows and Claims-Based Authentication, NTLM, Kerberos, and Active Directory integration, with sufficient administration knowledge to deploy, configure, monitor, and troubleshoot Share Point custom solutions. Experience with ADFS or federated authentication is an advantage.<br>Troubleshooting, Power Shell and ALM• Strong troubleshooting experience using Share Point ULS Logs, Windows Event Viewer, IIS Logs, Share Point Health Analyzer, Developer Dashboard, and related diagnostic tools.• Strong experience with Power Shell for Share Point administration, deployment, configuration, troubleshooting, and automation.• Experience packaging, deploying, upgrading, and maintaining Share Point solutions across multiple environments; proficiency with Git, TFS, SVN, Azure Dev Ops, or equivalent tools; CI/CD experience is desirable.<br>SQL Server and reporting Strong knowledge of Microsoft SQL Server, including complex queries, stored procedures, functions, triggers, custom database integration, and an understanding of Share Point database architecture and Microsoft-supported practices. Experience developing reporting and BI solutions using SQL Server Reporting Services (SSRS), Power BI, Excel Services, and Performance Point Services, including integration of Share Point solutions with reporting and analytics platforms.<br>Migration and Modernization• Experience upgrading or migrating Share Point applications and custom solutions between Share Point Server versions, including assessment of legacy customizations for compatibility, remediation, modernization, and migration.• Experience with Share Point Server 2016 to 2019 and/or Share Point Server 2019 to Subscription Edition upgrades is highly desirable, including the ability to identify obsolete, unsupported, or high-risk customizations and recommend appropriate remediation.<br>Certifications• Microsoft Share Point certifications are highly desirable.• Relevant Microsoft certifications in Share Point, Microsoft 365, Azure, Power Platform, development, architecture, or related Microsoft technologies are considered an advantage; historical Share Point Server development or administration certifications remain relevant.• Demonstrated continuous technical learning and completion of relevant Microsoft training and certifications will be considered positively.<br>Professional Skills• Strong software engineering, analytical, troubleshooting, and problem-solving skills; ability to translate complex business and technical requirements into practical, maintainable solutions.• Ability to work independently, take ownership of technical deliverables, manage multiple priorities, and provide technical leadership, code review, and mentoring.• Strong collaboration and communication skills; experience working in Agile environments using Scrum or Kanban; excellent written and verbal communication skills.• Fluent in Arabic and English.