Lead Software Engineer - Frontend Development

Join ClickUp as a Staff Frontend Engineer and play a crucial role in shaping our innovative software solutions. You will be responsible for developing and optimizing user interfaces that enhance user experience and drive engagement. Collaborate with a talented team of engineers, designers, and product managers to deliver top-notch features that meet our user…

Role overview SmartRecruiters seeks a Senior Frontend Engineer in Kraków to focus on the Design System and Frontend Platform. The role centers on building web applications that are both scalable and maintainable. Close collaboration with designers and product teams is essential to continually improve user experience across the platform. What you will do Develop and maintain the company design system and core frontend platform. Work with designers and product stakeholders to deliver a consistent, accessible user interface. Create solutions that follow established design principles and standards. Integrate frontend components with backend services by partnering with backend teams. Take part in shaping the future of frontend architecture at SmartRecruiters. Location This position is based in Kraków.

Join ClickUp as a Senior Frontend Engineer and take your career to the next level! As a key member of our dynamic team, you will play a crucial role in designing and implementing innovative front-end solutions that enhance user experience. Your expertise will help us deliver top-notch features for our users while collaborating closely with cross-functional teams.

Fraud Warning: Beware of potential scams posing as legitimate job opportunities. To ensure your application is considered, please apply only through the official Sensor Tower website or directly through our authorized profiles on platforms like LinkedIn, Indeed, BuiltIn, or Hackajob. Sensor Tower will never request payment, credit card, or bank account information during the application process. All official communications will originate from email addresses ending in sensortower.com. Interviews will be conducted via phone or Zoom, and no conversations will shift to external email or text platforms. If you encounter any issues, please reach out to us. Remember to attach your resume when applying.Recruitment Agencies: Sensor Tower does not accept unsolicited resumes from third-party agencies. Please refrain from sending resumes to our job alias, employees, or any other location. Sensor Tower will not cover fees related to unsolicited resumes and will not compensate agencies without a signed agreement.About This Role:Are you excited by the dynamic environment of a startup?Do you have a passion for developing high-impact, rapidly deployed products?Are you committed to mentoring emerging engineers and championing technical excellence?Join us in revolutionizing how insights are derived in digital marketing!Apply today!Role Summary:As a Mid / Senior Frontend Engineer at Sensor Tower, you will play a crucial role in developing top-notch products and features that enhance our user experience. Our flat organizational structure allows for your input to significantly influence product design and development.

Join our innovative team at dev2 as a Frontend Software Engineer, where you'll play a crucial role in creating cutting-edge web applications. Your expertise will help us deliver exceptional user experiences and drive our projects to success.

Senior Frontend EngineerLocation: Remote / WarsawEmployment Type: UoP / B2BSalary: 20,000 - 25,000 + VAT per month (based on experience for B2B)At PhotoAiD, we are a pioneering technology company specializing in biometric photography. Our innovative application allows users worldwide to easily capture document photos using their smartphones, revolutionizing the way people manage their documentation needs.PhotoAiD by the Numbers1 in 1000 people has taken a photo with us, and this is just the beginning!Shipping points in over 100 countries across 4 continents!Join a team of 100+ members dedicated to fostering a great work environment.Engage in 10 A/B tests weekly as we thrive on data-driven decisions.Support for over 10,000 document types, from fishing licenses to Mozambican passports.Utilized 10 million training photos to enhance our artificial intelligence capabilities.Why Join Us?Our technology significantly improves the lives of millions, enabling document photo capture from the comfort of home.We are scaling globally, from Mozambican passports to fishing licenses in Scandinavia.We prioritize high-quality engineering; our systems must be fast, secure, and reliable.Together, we cultivate a culture of collaboration, feedback, and mutual respect.Your ResponsibilitiesWeb DevelopmentBuild and maintain production applications for biometric photos and printing machinery.Implement advanced photo editing features (cropping, rotation, format conversion).Create responsive, touch-first interfaces optimized for kiosks.Implement virtual scrolling for large image galleries.Manage complex state handling in multi-step order flows.Mobile DevelopmentDevelop features for capturing and processing images in our React Native + Expo application.Integrate with native camera APIs and AI-based image validation.Architecture and QualityDesign modular architecture based on features.Write unit, integration, and E2E tests.Implement error boundaries and error handling.Work with OpenAPI schemas for type-safe backend integration.Participate in code reviews and maintain high code quality standards.

Join our dynamic team as a Frontend Engineer specializing in React, where you will play a pivotal role in developing and enhancing a scalable, high-performance SaaS frontend. Your focus will be on creating rich, engaging UI/UX experiences, including mobile web applications.

Join Box as a Senior Frontend Software Engineer in Warsaw, Poland, and play a pivotal role in shaping the future of content management. As part of our dynamic team, you will craft and maintain engaging user interfaces that enhance the experience for over 115,000 organizations globally. Your expertise will help drive collaboration and streamline workflows through innovative, AI-powered solutions. You'll be responsible for documenting software specifications, participating in agile ceremonies, and fostering a collaborative work culture. This is an exciting opportunity to be at the forefront of a technological revolution in the content cloud space.

Join Fairmarkit as a Senior Frontend Engineer and be a key player in revolutionizing the procurement process. You will design and implement user-centric web applications that elevate the user experience. Collaborate with cross-functional teams to create scalable and maintainable solutions while ensuring high performance and responsiveness.

Join HelloFresh in the vibrant city of Warsaw as part of our HelloTech team, a pivotal technology hub comprising over 1000 professionals dedicated to developing the digital products that enhance our comprehensive food experience. From meal kits to gourmet offerings, HelloTech designs the platforms that deliver tailored food solutions to millions of customers each month. Our direct-to-consumer subscription model is intricately linked to technology, influencing every aspect from user-friendly applications and personalized services to pricing, forecasting, and advanced supply chain management, with a commitment to minimizing food waste. While our brands cater to diverse customer needs, they are interconnected through shared platforms, data, and operational excellence powered by HelloTech. HelloTech operates through autonomous, cross-functional teams, each managing specific products or domains comprehensively. By collaborating with our Warsaw office, you will contribute to the development of scalable, data-driven products that enhance how customers discover, order, and enjoy HelloFresh’s offerings, both now and in the future. About the Role: What's Inside the Box This position requires providing high-level technical expertise within the Activation Mealkits project group. The focus is on enhancing the end-to-end activation journey for various meal kit brands, covering the technical flow from landing pages to checkout. This high-impact project encourages innovation through experimentation, where your technical decisions will directly impact conversion rates and revenue generation. Your role will involve supporting a dynamic and adaptable setup utilized across multiple markets and languages. The technical scope includes not only classic frontend engineering with React and TypeScript but also collaboration across experimentation frameworks, CMS integrations, caching systems, and selected backend services. This is a unique opportunity to influence systems that serve millions of users in 16 different countries. What You’ll Do: The Recipe Technical Architecture: Define the technical framework and engineering standards for landing pages, funnel stages, and checkout experiences using React, TypeScript, and contemporary technologies. Cross-Functional Coordination: Lead complex technical initiatives from inception to rollout, coordinating efforts across frontend, CMS, experimentation, and backend layers. System Evolution: Develop and enhance systems that facilitate experimentation.

Join the innovative team at nordsec as a Senior Frontend Engineer specializing in React within our Network Department. In this role, you will leverage your expertise to create dynamic and responsive user interfaces that enhance our network solutions. Collaborate with cross-functional teams to deliver high-quality software that meets our users' needs.

Role overview Sigma Software Group seeks a Principal Full-Stack Engineer with deep frontend expertise for its Warsaw office. The position involves designing and building web applications that put user experience at the center. Collaboration is essential, as the role works closely with colleagues from different disciplines to ensure software solutions meet client expectations. What you will do Design and implement web applications with a strong emphasis on frontend quality and usability Collaborate with cross-functional teams to deliver reliable, high-quality software Lead technical projects and set direction for development efforts Mentor junior engineers and help shape team best practices Requirements Extensive experience in both frontend and backend development Demonstrated ability to lead projects and guide teams Proven track record of mentoring and supporting junior developers Strong commitment to building user-centric software This Warsaw-based role offers the opportunity to influence client projects and contribute to the growth of the team.

About FreshaFresha stands as the premier marketplace platform for beauty and wellness, embraced by millions of consumers and businesses around the globe. With over 130,000 businesses and 450,000 stylists leveraging our services, we have successfully processed more than one billion appointments to date.Headquartered in London, UK, Fresha operates 15 global offices spanning North America, EMEA, and APAC.Our platform empowers consumers to discover, book, and pay for beauty and wellness appointments with local providers. Simultaneously, businesses and professionals in the beauty and wellness sector utilize our all-in-one platform to streamline their operations through an intuitive software suite and innovative financial technology solutions.Fresha’s ecosystem equips merchants with everything necessary for seamless business operations, including appointment scheduling, point-of-sale systems, customer record management, marketing automation, loyalty programs, inventory management, and team oversight.Our consumer marketplace amplifies revenue opportunities for partner businesses by harnessing the power of online booking and automated marketing via mobile applications and advanced integrations with major technology platforms such as Instagram, Facebook, and Google.Role OverviewAt Fresha, we view AI as a catalyst for enhancing feature delivery rather than merely a coding assistant. We equip every engineer with state-of-the-art tools (Claude, GitHub Copilot, Cursor) to minimize technical toil, allowing you to concentrate on delivering impactful product features. We value engineers adept at utilizing these tools to generate momentum within our six-week cycles, expediting the transition from concept to code while ensuring robust technical judgment to verify, secure, and take ownership of the final user experience.In light of our ambitious growth trajectory, we are seeking an exceptional Senior Frontend Engineer to join our global team.You will report directly to the Team Lead and collaborate within a cross-functional product team, taking responsibility for designing and developing applications while coordinating with other team members working on different aspects of our projects.

HelloFresh is seeking a Senior Frontend Engineer to join the Consumer Alliance team in Warszawa, Masovian Voivodeship, Poland. This position centers on developing and enhancing web applications that reach a broad customer base. What you will do Shape the user experience on HelloFresh’s platform through thoughtful frontend development. Collaborate with teammates to deliver new features and ongoing improvements. Address technical challenges and help design solutions for a diverse set of users. Share ideas and feedback in a collaborative environment. Requirements Senior-level experience in building web applications. Enjoys teamwork and values creative approaches. Comfortable tackling complex problems.

About WPP Media WPP is the leading creative transformation company, leveraging the power of creativity to forge better futures for our employees, the planet, clients, and communities. Discover more at wpp.com. WPP Media is WPP’s global media collective, orchestrating the best platforms, talent, and partnerships to unlock endless opportunities for growth in an era where media pervades every aspect of life. Learn more at wppmedia.com. At WPP Media, we value our culture and our people, which empower us to deliver outstanding experiences for our clients and each other. In this role, you will embody WPP & WPP Media’s core values: Be Extraordinary by Leading Collectively to Inspire transformational Creativity. Create an Open environment by Balancing People and Client Experiences through Cultivating Trust. Lead Optimistically by Championing Growth and Development to Mobilize the Enterprise. Role Summary and Impact As a vital member of the Global Operations Centre (GOC), you will collaborate with teams across the U.S., Europe, and Asia to deliver impactful solutions in a vibrant, multicultural setting. We are looking for a talented and passionate Frontend Engineer to join our Data & Technology Solutions team. You will play a key role in designing intuitive, engaging, and high-performance user interfaces for our data products and AI platforms, including the innovative WPP Open platform. If you enjoy creating beautiful and functional web applications, excel in modern JavaScript frameworks, and are keen to turn complex data into user-friendly experiences within the dynamic AdTech landscape, we invite you to apply. You are: A skilled user experience craftsman with a sharp eye for detail and a dedication to constructing pixel-perfect, responsive, and accessible interfaces. Proficient in contemporary frontend technologies, capable of producing clean, modular, and maintainable code. Passionate about performance and consistently optimizing web applications for speed and efficiency.

Join Box, Inc. as a Software Frontend Engineer III in our Growth Services team! We are looking for innovative and enthusiastic engineers to help us build exceptional user experiences that drive growth and engagement. As part of our dynamic team, you will be responsible for developing high-quality frontend applications using modern frameworks and tools.You will collaborate closely with cross-functional teams to translate business requirements into technical solutions, optimize application performance, and ensure a seamless user experience. If you are passionate about frontend technologies and eager to contribute to exciting projects, we want to hear from you!

Join our innovative team at Attio as a Staff Product Engineer, where you will play a pivotal role in designing and enhancing our product architecture. We are looking for a talented engineer who is passionate about building scalable solutions and has a strong understanding of product development. You will collaborate with cross-functional teams to deliver high-quality software that meets the needs of our diverse clientele.

Location: Warsaw, Poland - Hybrid (4 days on-site / 1 day remote)Contract: B2B · 25-40 k PLN net / month + RSUsWhy Fresha & Why Now?Fresha is revolutionizing the global beauty and wellness industry. With over 120,000 businesses, 450,000 professionals, and millions of clients, our platform manages more than 1 billion appointments, streamlining everything from scheduling to payments.Join us during this explosive growth phase—your contributions will be visible across the globe in a matter of days, not months.What You’ll DoAt Fresha, we view AI as a catalyst for accelerating feature delivery, not merely as a coding aid. We equip our engineers with cutting-edge tools (such as Claude, GitHub Copilot, and Cursor) to minimize mundane tasks. This allows you to concentrate on delivering impactful product features. We seek engineers who can effectively utilize these resources to enhance productivity within our 6-week cycles, expediting the transition from concept to code while ensuring technical integrity, security, and a superior user experience.* Take charge of our core booking & scheduling engine—the heartbeat of Fresha—ensuring it scales efficiently and provides seamless experiences for millions.* Design, construct, and launch new user-facing features using React + TypeScript, impacting a vast audience of professionals and clients.* Manage features from inception to completion: research, technical design, implementation, testing, deployment, and monitoring.* Utilize (and enhance) our Design System to rapidly deliver refined UI while elevating standards for consistency.* Develop robust automated tests (Cypress, Jest, React Testing Library) and maintain a healthy CI/CD pipeline.* Collaborate closely with Product, Design, Backend, Infrastructure, and Mobile engineers to bring features from ideation to launch and beyond.* Accelerate your efforts with AI: leverage AI agents, LLM-powered coding tools, and access a variety of AI resources (e.g., chatbots, development assistants).* Interested in backend, DevOps, or mobile? Grow your skills in those areas too!

At CreatorIQ, we are redefining the landscape of creator-led growth with our AI-native operating system, trusted by over 1,300 brands and agencies worldwide.Our mission is to infuse humanity into business and empower individuals to make a significant impact. Our core values—intentionality, excellence, collaboration, and kindness—guide our everyday endeavors. CreatorIQ has been recognized as one of the best companies to work for by BuiltIn LA and NY, named a Leader in The Forrester New Wave™: Influencer Marketing Solutions, and honored by G2 as a Leader and Best Customer Relationship. We take pride in our flexible work model that encourages both in-person and remote collaboration, fostering innovation and adapting to different work styles.Join our passionate and innovative team on this exciting journey to transform the industry!Staff Search EngineerAs a Staff Search Engineer, you will play a pivotal role in the design and continuous improvement of CreatorIQ’s real-time search platform, which serves as the backbone for creator discovery across 30 million profiles and billions of posts. Your responsibilities will include architecting and maintaining Elasticsearch clusters, developing high-performance APIs in Go, and ensuring that the platform is scalable, reliable, and responsive even at large scales.This position combines hands-on development with technical leadership, where you will contribute to architectural decisions and mentor engineers in building a fast, dependable, and impactful search experience for our clients.Primary Tech Stack: Go, Typescript, Elastic, AWS (Cloudwatch, SQS, Lambdas), MSSQL, AWS Redshift