Source Job

• Design, develop, and maintain features in our React Native app for iOS and Android
• Drive technical decisions and help improve team workflows and mobile engineering culture
• Collaborate with designers, product managers, and backend developers to deliver user value

AUTO1 Group, Europe's leading digital automotive platform, we are revolutionizing the used car market with our well-known brands Autohero, wirkaufendeinauto.de, and AUTO1.com.

• Lead development on the React Native infrastructure that drives the mobile app.
• Design and implement architectural patterns that solve complex problems at scale.
• Elevate existing standards around release management and CI/CD processes.

Jobgether is a platform that uses an AI-powered matching process to ensure applications are reviewed quickly and objectively. The company fosters a high-growth, mission-driven culture with opportunities for professional growth.

• Develop and maintain mobile applications using React Native
• Collaborate with product managers, designers, and backend engineers to deliver end-to-end features
• Implement and manage application state using Redux/Redux Toolkit

Tietoevry Create, a part of global technology organization Tietoevry, creates durable technical solutions that deliver digital transformation at scale. They blend strategic insights and thoughtful design with brilliant engineering and value every team member.

• Work closely with product, design, and engineering peers to launch new features across our web and mobile platforms
• Design, test, and scale new features to solve complex problems in a simple way for our customers
• Be hands-on and execute work as an individual, while also building products that allow for flexibility as we evolve our product offerings

Flex is a growth-stage FinTech company creating the best rent payment experience. They empower renters with flexibility over their most significant recurring expense and have built up unprecedented investor support and an enthusiastic user base.

• Write well-designed, efficient code that works across devices.
• Build both beautiful and functional user experiences.
• Support continuous improvement by staying up-to-date with the rapidly evolving mobile world.

Bounteous is a digital innovation partner that co-innovates with the world's leading brands to create transformative digital experiences. They are focused on driving growth for their clients through strategy, innovation, engineering, and design.

Lead and grow the React Native team, setting clear expectations and supporting individual development. Own mobile domains end-to-end, including architecture, development, QA, and long-term maintenance. Design, build, and maintain iOS/Android features in our React Native app, ensuring correctness and scalability.

We are looking for a Team Lead React Native Engineer with strong English communication skills, a hands-on mindset, and proven leadership experience.

• Lead development and enhancement of the React Native infrastructure.
• Design and implement scalable architectural patterns.
• Establish and maintain CI/CD processes and testing frameworks.

Jobgether uses an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Their system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company.

• Develop, maintain, and optimize mobile applications using React and React Native.
• Collaborate closely with backend, product, and design teams to create well-integrated features.
• Provide architectural guidance and technical leadership, establishing clean boundaries, modularization, and scalable feature structures.

Tietoevry Create (formerly MentorMate) delivers digital transformation at scale using engineering, strategic insights, and design. It offers flexible working models, competitive pay and benefits, and advancement opportunities within their friendly and global people-oriented environment.

• Build and improve mobile app features, creating polished and performant UI components.
• Own features end-to-end, from design to shipping, including any necessary API changes.
• Monitor and optimize the transaction attribution system to ensure accurate processing at scale.

Sierra Studio connects talented Brazilian professionals with exciting career opportunities in a highly-vetted small community of growing companies in the US. Applying to Sierra seamlessly integrates you into their ecosystem, granting automatic eligibility for all relevant opportunities they offer.

• Play a substantial role in the platform frontend engineering team.
• Develop high quality, well designed, reusable, and well-tested system components, and contribute to the overall system designs.
• Expand Cresta’s services beyond web and desktop applications to native and hybrid mobile applications.

Cresta is on a mission to turn every customer conversation into a competitive advantage by unlocking the true potential of the contact center. Their platform combines the best of AI and human intelligence. They have assembled a world-class team of AI and ML experts and are backed by top-tier investors.

• Lead technical direction and long-term architectural vision for our mobile applications.
• Act as the principal hands-on contributor, setting standards for engineering quality, performance, and scalability.
• Drive alignment across mobile and web teams to ensure a consistent and unified user experience.

Engine is transforming business travel into something personalized, rewarding, and simple. They are building a platform that brings together corporate travel, a powerful charge card, and modern spend management in one place. More than 20,000 companies already rely on them. They have been recognized as one of the fastest-growing travel and fintech platforms in North America, with honors including the Deloitte Fast 500 and Built In’s Best Places to Work.

• Collaborate closely with product and design to build user-facing features at scale.
• Support and unblock peers through async reviews, pairing, and mentorship.
• Drive frontend best practices through deliverables, demos, and documentation.

Onebrief is collaboration and AI-powered workflow software designed specifically for military staffs. By transforming this work, Onebrief makes the staff superhuman.

• Designing, building, and maintaining high-performance mobile applications.
• Integrating front-end functionality with backend services and third-party platforms.
• Troubleshooting, debugging, and continuous improvement of the apps.

Jobgether is a company that uses an AI-powered matching process to ensure applications are reviewed quickly, objectively, and fairly against the role's core requirements.

• Collaborate closely with the frontend engineers to define and implement our frontend strategy.
• Take shared ownership of our library architecture, ensuring performance, scalability, and reliability.
• Build and maintain high-quality library components using React, TypeScript, and JavaScript.

Embeddable is an end-to-end developer platform for building seamless, lightning-fast customer-facing analytics directly into your product. The company launched in December 2023, received a €6m seed funding round in December 2024, and is currently a 20+ person team that has plans to scale significantly.

• Collaborate with multidisciplinary teams, participating in agile ceremonies.
• Assist in the development and maintenance of mobile applications in React Native.
• Contribute to the development of interfaces with React.

ília is a technology, data, and design specialist that drives digital transformation for major market players for over 10 years in the financial, insurance, and mobility sectors. With over 450 professionals, they are present in Brazil and Europe, serving the markets of Latin America, Europe, and North America, developing high-quality digital products with a focus on business results. They are an innovative, creative team passionate about technology, certified for the 5th consecutive year as a Great Place to Work, believing people change the world, and invest in them.

Build rich, performant frontend experiences in React + TypeScript, including dashboards, traces, configuration flows, and real-time views. Collaborate with backend engineers on requirements, define API contracts, implement UI, and ship with metrics, logs, and alerts wired up. Lead frontend architecture decisions around routing, data fetching, caching, and client-side error handling.

Arize AI is the leading AI & Agent Engineering observability and evaluation platform, empowering AI engineers to ship high-performing, reliable agents and applications.

• Architect and develop responsive, high-impact web interfaces using React, NextJS, and TypeScript.
• Collaborate cross-functionally with Product, Design, and Backend teams to deliver seamless UI/UX solutions.
• Write clean, testable, and maintainable code following TDD/BDD best practices.

Jobgether uses an AI-powered matching process to ensure an application is reviewed quickly, objectively, and fairly against the role's core requirements. Their system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company.

Evolve Aircall's frontend architecture into a true platform. Design the architecture that makes collaboration seamless, safe, and performant. Act as an enabler for the entire engineering organization, setting the standards for how frontend code is written, shared, and deployed at Aircall.

Aircall is a unicorn AI-powered customer communications platform used by 22,000+ companies worldwide to drive revenue, faster resolutions, and scale.

Develop user-focused interfaces for an AI-powered platform. Translate UI/UX designs into clean, scalable implementations using React and TypeScript. Collaborate with designers and product managers to refine requirements and user flows.

• Lead the design and development of user interfaces that drive data insights.
• Build reusable, scalable frontend components and systems using modern frameworks and tooling.
• Drive architectural discussions and make technical decisions that ensure code quality and performance.

Attentive is the AI marketing platform for 1:1 personalization redefining the way brands and people connect.