Summary: Ciklum is seeking a Senior Full Stack Engineer to join a cross-functional team engineering future experiences on a widget-based front-end platform. Highlights: 1. Design and develop scalable front-end applications using React and TypeScript. 2. Build reusable, high-quality UI components and optimize performance. 3. Develop and integrate backend services using Node.js and Express. **Ciklum** is looking for a **Senior Full Stack Engineer** to join our team in Argentina. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. **About the role:** As a Senior Full Stack Engineer, you'll become a part of a cross\-functional development team engineering experience of tomorrow. Project Description: Widget‑based front\-end platform that powers Intelligent Agreement Management (IAM) experiences across creation, sending, signing, and management—bringing consistent, modern UX to our most visible product surfaces. It standardizes how teams build UI via a shared shell and micro‑frontend architecture, with robust utilities and CI/CD that publish versioned widgets to our global CDN for reliable, high‑scale delivery. Engineers work at a meaningful scale—building experiences used by 1\.7 million organizations—and integrate agreement‑centric AI to turn contracts into intelligent workflows. Joining team means shaping platform patterns, performance, and observability. **Responsibilities:** * Design, develop, and maintain scalable front\-end applications using React and TypeScript * Build reusable, high\-quality UI components and ensure performance optimization * Develop and integrate backend services using Node.js and Express * Participate in code reviews, testing, and continuous improvement of development processes * Ensure code quality through automated testing and best engineering practices **Requirements:** * 8\+ years of development experience * Proficient with TypeScript and the React framework * Proficient in building reusable front\-end components * Proficient with front\-end testing libraries * Proficient with Express and NodeJS * Experience delivering a SaaS product **Desirable:** * Be open minded, forward thinking, and passionate about great software * Experience with the entire software development lifecycle, including version control, build process, testing, and code release * Experience with data modeling or schema languages, such as XML Schema or JSON Schema. * Agile and Test\-driven development methodologies * Experience with NextJS (Bonus) * Experience with ADO (Bonus) * Experience with micro\-frontend frameworks * Experience building/consuming RESTful or gRPC web\-services * Strong communication skills, particularly in an asynchronous environment **What\`s in it for you?** * Care: your mental and physical health is our priority. We ensure comprehensive company\-paid medical insurance and mental health programs, 5 undocumented sick\-leave days per year * Tailored education path: boost your skills and knowledge with our regular internal events (meetups, conferences, workshops), Udemy license, language courses and company\-paid certifications * Growth environment: share your experience and level up your expertise with a community of skilled professionals, locally and globally * Long\-term employment with 20 working\-days paid vacation and local bank holidays * Flexibility: 100% remote work mode * Opportunities: we value our specialists and always find the best options for them. Our Internal Mobility Program helps change a project if needed to help you grow, excel professionally and fulfill your potential * Global impact: work on large\-scale projects that redefine industries with international and fast\-growing clients * Welcoming environment: feel empowered with a friendly team, open\-door policy, informal atmosphere within the company and regular team\-building events **About us:** At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting\-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress. As we expand into Latin America, every Ciklumer is helping to shape our story. Collaborate with seasoned experts and make a global impact backed by two decades of industry leadership. Want to learn more about us? Follow us on Instagram, Facebook, . **Explore, empower, engineer with Ciklum!** Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum. REQUIRED SKILLS ExpressJS Node.js React TypeScript JOB INFO Job Identification 2717 Job Category Software Engineering Posting Date 04/22/2026, 05:38 AM Locations AR\-Remote (Remote)