Senior Frontend Engineer (Contract)

At Rehire, we are collaborating with a leading technology company to find a talented Senior FrontEnd Developer with extensive experience in React. You will be joining a dynamic team dedicated to developing scalable and high-performance applications.We are looking for a candidate with strong technical insight, architectural judgment, and a focus on performance, capable of designing and implementing robust solutions within the React ecosystem.Key Responsibilities:Develop applications using React.Design scalable applications within the React ecosystem.Build efficient and optimized UX interfaces.Optimize performance in component usage.Design clean architectures for secure and efficient data flow.Prioritize the implementation of native React components.Manage server states and cache handling effectively.Collaborate with other departments for demos and presentations.Provide training on application usage when necessary.Qualifications:Minimum of 3-4 years of experience in FrontEnd development, specifically in React. (MANDATORY)Intermediate to advanced knowledge of React native components.Intermediate proficiency in TypeScript. (MANDATORY)Intermediate knowledge of JavaScript.Experience with modern CSS (Tailwind or PostCSS).Experience with Radix UI and Headless UI.Utilization of React Testing Library.Experience with geolocation applications.Ability to design scalable architectures and optimize performance.Position Details:Schedule: Monday to Friday from 9:00 AM to 6:00 PM.Location: Offices in Polanco, Mexico City.Competitive salary with legal benefits.Work modality: Hybrid. Initially in-person 5 days a week, with flexibility thereafter.

Encora is seeking a Frontend Developer with strong skills in React and TypeScript to join the team in Mexico. This position centers on building scalable web applications and maintaining responsive, high-performing user interfaces. Role overview This role focuses on developing features that enhance the user experience and ensure smooth interactions on the front end. The work involves collaborating with team members to deliver reliable, efficient solutions for web applications. What you will do Develop and maintain web applications using React and TypeScript Work to improve performance and responsiveness of the user interface Contribute ideas to enhance the overall user experience Who we’re looking for Experience with React and TypeScript Interest in building scalable, high-quality web applications Enjoys solving challenging problems and working on innovative projects

ALTEN Mexico is on the lookout for a talented Senior Frontend Web Developer specializing in React. The ideal candidate will possess extensive experience in crafting modern, efficient, secure, and maintainable web applications, translating product vision into engaging and user-friendly web experiences for clients in the financial sector.Main ResponsibilitiesDevelop web applications using React, ensuring performance, security, and maintainability.Convert requirements and designs into functional interfaces that enhance user experience.Deliver software adhering to quality standards and best practices.

Important Notice:Be cautious of fraudulent job postings. To ensure your application is considered, only apply through Sensor Tower's official website or reputable sites like LinkedIn, Indeed, BuiltIn, or Hackajob. Sensor Tower will never request payment or sensitive financial information as part of the application process. Communication will only occur through official email addresses ending in sensortower.com. Interviews will take place via phone or Zoom, and will not transition to alternative email or text formats. If you encounter any suspicious activity, please contact us directly. Remember to attach your resume when applying.To Recruitment Agencies:Sensor Tower does not accept unsolicited resumes. Please refrain from sending resumes to our job alias, employees, or any other organizational contact. We are not liable for any fees related to unsolicited submissions and will not compensate any agency that does not have a signed agreement with us.About the Role:Are you excited by the dynamic and innovative environment of a startup? Do you have a passion for designing high-impact, rapid-release products? Are you eager to mentor aspiring engineers and promote technical excellence? Join us in revolutionizing how the world analyzes insights in digital marketing!Role Summary:As a Senior Frontend Engineer at Sensor Tower, you will play a pivotal role in shaping our development processes while building robust features. You will take ownership of critical technical components, ensuring our applications are scalable, maintainable, and efficient. In our agile organization, your insights will guide the technical vision of our product, enhancing the user experience for our clients navigating the digital landscape.

Accelerate Your Career with Clara!At Clara, the fastest-growing company in Latin America, we have developed a premier solution enabling businesses to efficiently manage their payments. We proudly support over 20,000 dynamic companies with locally issued corporate cards, seamless bill payment, innovative financing, and a robust B2B platform designed for scalability.Backed by renowned investors, including top regional VCs and leading global funds, we are committed to constructing the financial infrastructure that empowers high-performing organizations across the region. Join us in a fast-paced environment that promotes career growth and allows you to produce remarkable work alongside a passionate team across the Americas.What You Will DoWe are building a talent pipeline for exceptional Senior Frontend Engineers eager to shape user-facing experiences at Clara. If you have a passion for frontend architecture, modern React development, and crafting seamless user interactions, we want to hear from you for future opportunities.As a Senior Frontend Engineer, you will be responsible for designing and implementing scalable web applications that prioritize speed, security, and visual consistency. Collaborating closely with product managers, designers, and backend engineers, you will create features that merge technical excellence with significant business impact.Your responsibilities will include:

Join Clara as a Senior Frontend Engineer specializing in Transactions & Insights, where you will drive innovative solutions in our applications. You will collaborate with a talented team to enhance user experiences and deliver insightful features that empower our clients.

ALTEN México is actively seeking a Senior Frontend Mobile Developer specializing in React Native and iOS to join our dynamic team. The ideal candidate will possess extensive experience in developing native mobile applications for iOS, with strong expertise in SwiftUI and UIKit. You will be responsible for building critical features for a high-security and high-performance banking application, collaborating closely with backend teams, design, and QA within an agile environment.Main ResponsibilitiesDesign, develop, and maintain key functionalities of a high-performance mobile banking application.Ensure the quality of the delivered software meets internal standards and provides an excellent user experience.Collaborate with backend, design, and QA teams in an agile setting.Implement and maintain mobile analytics tools (Firebase Analytics, AppDynamics).Develop solutions using CoreData, Combine, and multithreading (GCD, Operations).Implement mobile security mechanisms: Keychain, biometric authentication (Face ID, Touch ID), encryption, and more.Consume REST APIs and manage JSON structures.Implement automated testing (unit and UI tests).Conduct constructive code reviews aligned with acceptance criteria.

Join Orion Innovation, an award-winning global business and technology services firm that is recognized for its innovative approach to business transformation and product development. Our expertise spans digital strategy, experience design, and engineering, delivering exceptional agility, scalability, and maturity. We partner with diverse clients across various industries, including finance, telecommunications, media, consumer products, automotive, life sciences, e-commerce, and education.Position: React Native DeveloperMinimum Experience Required: 2 yearsExperience in compiling and publishing applications for iOS.Integration of authentication systems such as Auth0, Okta, Clerk, etc.Proficient in consuming REST and SOAP APIs.Willingness to work 3 days in the office.Intermediate level of English.

Turnitin is on the lookout for a talented Principal Frontend Engineer with a robust background in contemporary frontend technologies, including web components, React, and micro frontends. This position is perfect for engineers who are enthusiastic about crafting and delivering user-friendly, efficient, and dependable interfaces that bolster our acclaimed educational platform.As a vital member of our product development team, you will significantly influence the user experience of both our current and upcoming applications. You will work in close collaboration with backend engineers, designers, and product managers to devise scalable and engaging solutions that fulfill the needs of educators and students globally. Key Responsibilities: Technical Leadership & OwnershipLead the design, development, and enhancement of major frontend components and platform functionalities.Steer architectural decisions at both system and program levels, ensuring compliance with enterprise reference architecture.Serve as the primary decision-maker when mid and junior engineers encounter complex technical challenges, providing clarity and direction to keep projects progressing smoothly.Innovate within project and platform constraints, introducing fresh methodologies and solutions.Strike a balance between strategic technical vision and practical, supportable execution. Component Development & Design SystemsDesign, develop, and maintain highly efficient, reusable, and scalable web components using modern frontend frameworks.Create modular UI libraries and design systems to ensure consistency, maintainability, and reusability across projects.Establish and uphold best practices in accessibility, security, performance optimization, and responsive design.Collaborate closely with designers and product managers to define the architecture of reusable component libraries and design systems. Integration & Cross-Functional CollaborationGuarantee the seamless integration of web components into applications.Partner with backend engineers to design APIs that facilitate efficient data flow and interaction.Work alongside DevOps to enhance CI/CD processes for frontend builds and deployments.Collaborate with QA teams to ensure smooth transitions, debugging, and resolution of testing issues.Code Quality, Standards & PerformanceProduce clean, maintainable, and well-documented code that aligns with modern engineering standards.Conduct code reviews and establish departmental best practices for quality and maintainability.Create robust unit and integration tests for reusable components.Identify and resolve performance bottlenecks, ensuring cross-browser and cross-platform compatibility.Mentorship & Cultural Leadership

We are seeking a talented Salesforce Developer to join our dynamic team at Lifted An Upwork Company. As a Salesforce Developer, you will play a crucial role in designing, developing, and implementing Salesforce solutions that meet the unique needs of our clients.In this position, you will leverage your technical expertise to customize Salesforce applications, integrate third-party applications, and optimize user experience. Your contributions will directly impact our clients' success by enhancing their CRM capabilities.

We are seeking a highly skilled and innovative Senior Mobile Engineer with expertise in React Native and React to join our dynamic team at Lendable. In this role, you will be responsible for designing and developing high-quality mobile applications that enhance user experience and drive engagement.As a Senior Mobile Engineer, you will collaborate with cross-functional teams to define, design, and ship new features. You will have the opportunity to lead projects and mentor junior developers, ensuring best practices in mobile development are applied. If you are passionate about mobile technology and have a desire to make a significant impact, we want to hear from you!

At beumergroup1, we believe in the power of talent and creativity. We welcome unsolicited applications from innovative thinkers and passionate professionals eager to join our dynamic team. If you have unique skills and experiences that you think would contribute to our mission, we encourage you to submit your application. We are always looking for exceptional individuals who share our values and commitment to excellence.

About Delinea:Delinea stands at the forefront of identity security, providing revolutionary solutions that protect both human and machine identities through intelligent and centralized authorization. Our innovative approach empowers organizations to manage their interactions seamlessly across the modern enterprise landscape. By harnessing the power of AI, Delinea’s advanced cloud-native Identity Security Platform ensures comprehensive context is applied throughout the entire identity lifecycle, spanning cloud and traditional infrastructures, data, SaaS applications, and AI technologies. As the only platform capable of discovering all types of identities—including workforce members, IT administrators, developers, and machines—Delinea allows organizations to assign appropriate access levels, identify anomalies, and respond to threats in real-time. With deployment times measured in weeks rather than months, a 90% reduction in management resources compared to competitors, and an impressive uptime of 99.995%, our solutions deliver unparalleled security and operational efficiency. Discover more about us at Delinea.com, LinkedIn, X, and YouTube.Join our dynamic and passionate global team at Delinea and contribute to making the world a safer place. Our success is driven by exceptional product leadership, talented engineers, and strategic investments from TPG. We celebrate diversity, encourage innovation, and foster a culture of respect and fairness. If you are eager to challenge the status quo and push boundaries in the tech industry, we want to hear from you!

Join Clara as a Senior Frontend Developer, where you will play a pivotal role in enhancing our Transaction Management Platform tailored for Latin America. We are seeking a passionate and skilled developer who loves crafting exceptional user experiences and is keen to collaborate with a dynamic team in a fully remote environment.In this role, you will work closely with product managers and backend developers to create seamless and efficient frontend solutions. You will be responsible for translating design wireframes and prototypes into high-quality code, ensuring the performance and responsiveness of applications across various devices.

Join Our Team at TruelogicTruelogic is a premier provider of nearshore staff augmentation services, proudly based in New York. With a legacy spanning over two decades, we have been at the forefront of delivering exceptional technology solutions to businesses of all sizes, ranging from dynamic startups to established industry leaders, assisting them in achieving their digital transformation objectives.Our talented team of over 600 tech professionals, strategically located in Latin America, drives digital innovation through partnerships with U.S. companies on their most significant projects. Collaborating with Fortune 500 companies or agile startups, we consistently deliver impactful results that transform businesses.By applying for this role, you are taking an exciting step towards joining a vibrant team that values your skills and ambitions. We strive to align your expertise with opportunities that promote remarkable career development and success while contributing to projects that will shape the future.About Our ClientOur client is revolutionizing digital intimacy with a rapidly growing platform dedicated to real-time media sharing among close friends. Supported by prestigious Silicon Valley investors, this company has expanded to millions of daily active users by emphasizing genuine connections over conventional algorithm-driven feeds. They are pioneering a new category of mobile-first experiences designed to connect users with their inner circles on a large global scale.Position OverviewAs a Senior Mobile Engineer specializing in React Native, you will be instrumental in enhancing our Android ecosystem by converting high-performance features from a refined iOS environment. Collaborating with a dynamic mobile team, you will design and elevate core functionalities to ensure consistent feature parity and an exceptional user experience across platforms for a vast global audience.

As a Senior UX Designer at Coupa, you will play a pivotal role in shaping the user experience of our innovative products. You will collaborate with cross-functional teams to design user-centric solutions that enhance the usability and accessibility of our software. Your expertise will help drive the design process from concept through to execution, ensuring a seamless experience for our users.

Join our dynamic team at Bluelight Consulting as a Laravel Developer with proficiency in React. This fully remote position is tailored for talented developers across Latin America who are passionate about building innovative and high-quality web applications. You will work closely with our team to design, develop, and maintain robust applications that enhance user experience and drive business success.

At Liquid Development, we pride ourselves on being the largest outsourcing art studio in North America since our inception in 2000. Our vibrant and collaborative work environment fosters creativity among a diverse team of talented professionals, ensuring we remain at the forefront of content creation. Our contributions to AAA titles, including renowned franchises such as Halo, Mass Effect, Borderlands, and Call of Duty, underline our commitment to excellence in the gaming industry.Explore our work on ArtStation: https://www.artstation.com/liquiddevelopmentWe are actively building our talent pool for exceptional 3D Material Artists for 2026! By submitting your application, you’re not applying for a specific role today; instead, you’re joining a curated network of creative professionals we may reach out to as new opportunities arise. This is a proactive step to align your skills with future projects, allowing us to keep you in mind for exciting collaborations.As a 3D Material Artist, you will have a keen artistic eye and a passion for creating top-tier, game-ready materials. You will collaborate with our experienced team on long-term projects, working closely with Environment Art, Concept Art, and Engineering to develop materials that are visually striking and aligned with the project's artistic vision.Your Responsibilities Will Include:Designing and maintaining a diverse array of PBR materials and surface treatments that enhance the project's visual aesthetic.Creating and managing Substance Designer graphs for tileable materials, trims, and intricate surface details.Working in tandem with Environment Artists to ensure seamless material integration across in-game environments.Assisting in the development and documentation of material workflows, standards, and libraries.Identifying and resolving material-related issues during both production and post-production phases.

ALTEN México is on the lookout for a Mid-Level React Native Mobile Developer to join our dynamic team responsible for developing the AT&T Super App. The ideal candidate will possess a strong background in high-traffic mobile applications, extensive knowledge of React Native, and expertise in performance optimization. You will play a crucial role in implementing and enhancing critical functionalities within a TelCo ecosystem and digital services. Collaborating closely with Product, Architecture, QA, and DevOps teams in an agile environment, you will ensure the application's quality, stability, and ongoing evolution.Main ResponsibilitiesDevelop, enhance, and maintain key features of the Super App using React Native.Refine screens, flows, forms, validations, and reusable UI components.Integrate REST/GraphQL APIs and manage errors, authentication, timeouts, and telemetry efficiently.Optimize mobile performance (rendering, lists, images, caching) to ensure a seamless user experience.Address and fix bugs, crashes, and compatibility issues on both iOS and Android platforms.Conduct root cause analysis and document findings, solutions, and validation of fixes.Maintain high code quality through small, clear PRs aligned with repository standards.Work with dev/qa/stage/prod environments and assist in generating test builds.Collaborate closely with Product, QA, Architecture, and DevOps teams using agile methodologies.Contribute to the health of the codebase through targeted refactoring when necessary.