SR Frontend React.js Engineer

Here at ília, our job openings are always open to everyone and are not restricted by gender, ethnicity, sexual orientation, social factors, physical or intellectual conditions (PwD), etc. We encourage applications from members of all minority groups!

We are specialists in technology, data, and design, driving the digital transformation of major market players for over 10 years, in the financial, insurance, and mobility sectors. With more than 450 professionals, we operate in Brazil and Europe, serving the Latin American, European, and North American markets, developing high-quality digital products focused on business results. We are an innovative, creative team passionate about technology.

Certified for the 5th consecutive year as a Great Place to Work, here at ília we believe that people change the world, and we invest in them. Our awesome deliveries are made by people for people — after all, awesome people make awesome deliveries!
#Cometoília!

We are looking for a Frontend React.js Engineer to join our team and help build a next-generation investment web application. The ideal candidate has solid experience in modern web development using React.js and Next.js, a strong understanding of performance and usability, and the ability to collaborate closely with backend and mobile teams.
About the project

We are embarking on a mission to build a cutting-edge, direct-to-consumer digital investment platform for a leader in the financial services industry. The core challenge is to create a seamless and intuitive experience that captures and retains significant assets, particularly from individuals transitioning out of employer-sponsored retirement plans and those seeking to invest their personal capital.
This is a ground-up initiative to deliver a modern wealth management solution. You will be at the heart of a strategic, multi-phased program that fundamentally transforms how our client engages with its customers.

The work

The project involves architecting and developing a robust platform powered by a modern, API-based infrastructure. We will integrate with a leading fintech partner to handle the core mechanics of account opening, funding, and trading, allowing our team to focus on building a superior, client-facing experience.
Success requires more than just great code. You will join a dynamic, cross-functional team of product managers, UX/UI designers, business strategists, and compliance experts. You will work in close collaboration to navigate complex financial regulations, translate intricate business requirements into elegant technical solutions, and solve challenging integration problems with our external partners. This role is ideal for a proactive problem-solver who thrives in a collaborative environment and is passionate about building products that have a real-world impact on people's financial futures.

• English proficiency: C1 or higher
• Proven experience in web development using React.js.
• Deep knowledge of JavaScript and TypeScript.
• Strong experience consuming and integrating RESTful APIs.
• Proficiency with version control via Git and collaborative workflows (branching, pull requests, code reviews).
• Hands-on experience with automated and/or end-to-end testing using frameworks such as Jest, Playwright, or Cypress.
• Good understanding of UX/UI principles, with a strong eye for visual details and usability — especially in financial or data-rich applications.
• Experience collaborating with backend teams using Node.js.
• Experience with CSS-in-JS or modern styling libraries.
• Strong experience building modular and re-usable components for React applications focusing on high maintainability.
• Strong experience with State Management frameworks such as ReactContext, Zustand and Redux.

• Experience developing financial or investment web applications.
• Experience with CI/CD pipelines for web applications.
• Familiarity with Docker and Kubernetes-based environments.
• Knowledge of web performance optimization and best practices.
• Experience working with cloud platforms such as AWS or Azure.
• Understanding of mobile platforms (React Native, iOS, Android) and experience aligning web and mobile experiences.

Our employment model is CLT (Brazilian labor law), with a 40-hour flexible workweek, performed remotely. ília’s benefits are designed to provide an AWESOME experience for every ílian. Below is a summary of our benefits. #Cometoília

Health and Well-being:

• SulAmérica Health and Dental Plan, extended to dependents
• Meal/Food allowance on a flexible “Caju” benefits card
• Life Insurance
• Home-office allowance on a flexible “Caju” benefits card
• Wellhub (Gympass)
• Sesc (Commerce Social Service) - extended to dependents, with access to services throughout Brazil
• TotalPass

For Your Development:

• ília University: Corporate university with over 20,000 courses available for personal and professional development
• Language Academy: Language school for ílians
• í-talks and Chapters: Moments and ceremonies where the team shares practices, studies, projects, and ideas. Chapters bring together people with similar skills to exchange ideas, practices, and experiences

Additional Unique Perks:

• Pet Health Plan - Guapeco
• Onhappy – leisure travel benefit that gives you the freedom to travel with whomever you want
• BYOD (Bring Your Own Device) – We rent your personal laptop by paying you a monthly fee for its use, but we also provide work computers for ílians. It’s your choice!
• Your Birthday, Your Cake! - Extra voucher on the flexible “Caju” benefits card on your birthday
• Networking Reward Program – A referral program that rewards you for bringing in new employees