Senior Frontend Software Engineer

Leading provider of web-based platform for SMS marketing and business texting in North America through SimpleTexting product.
Frontend
Senior Software Engineer
Hybrid
5+ years of experience
Enterprise SaaS

Description For Senior Frontend Software Engineer

Sinch SimpleTexting, the leading SMS marketing platform in North America, is seeking a Senior Frontend Software Engineer to join their team in Madrid. This role offers an opportunity to work on a platform that serves thousands of organizations, including Fortune 500 companies, small businesses, and nonprofits. The position involves developing scalable frontend applications using React and TypeScript, working in an agile environment with daily production releases.

As a Senior Frontend Engineer, you'll be responsible for building intuitive interfaces, optimizing performance, and implementing state management solutions. The role requires expertise in modern frontend technologies, including React, TypeScript, and GraphQL, along with a strong focus on testing and best practices. You'll work closely with product designers to create exceptional user experiences and contribute to architectural decisions.

The position offers a hybrid working model based out of the Madrid office, combining the benefits of remote work with in-person collaboration. You'll join a mature engineering environment that maintains a startup-like atmosphere, encouraging new ideas and innovation. The team structure ensures autonomous decision-making while following established engineering processes.

This is an excellent opportunity for a senior frontend developer who enjoys working with modern technologies, values continuous learning, and wants to contribute to a platform that enables businesses to scale their SMS engagement strategies. The role combines technical challenges with the opportunity to impact how thousands of organizations communicate with their audiences.

Last updated 14 days ago

Responsibilities For Senior Frontend Software Engineer

  • Develop and maintain scalable, high-performance frontend applications using ReactJS and TypeScript
  • Build intuitive and developer-friendly interfaces
  • Work closely with product designers to translate UX/UI wireframes into functional user experiences
  • Optimize performance, accessibility, and responsiveness of the application
  • Implement state management solutions and scalable component architectures
  • Integrate frontend applications with RESTful APIs and GraphQL endpoints
  • Ensure high-quality codebase with focus on testing
  • Stay up to date with latest frontend development best practices
  • Work in collaborative environment, contributing to architecture and design decisions

Requirements For Senior Frontend Software Engineer

TypeScript
React
  • Proven experience developing frontend applications using React and TypeScript
  • Strong understanding of modern UI frameworks, component-driven design, and best practices
  • Experience with state management libraries like Redux or React Query
  • Knowledge of performance optimization techniques
  • Experience working with RESTful APIs, WebSockets, and GraphQL
  • Familiarity with design systems, reusable UI components, and accessibility standards
  • Understanding of frontend build tools and modern development workflows (CI/CD)
  • Experience writing unit, integration, and end-to-end tests using Jest, Playright
  • Strong problem-solving skills and ability to work in collaborative team
  • Love of learning and sharing knowledge

Interested in this job?

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