Senior Full Stack Engineer (Front-End Oriented)

Who is Eleos?

Today, more people than ever are speaking publicly about their mental health. Whether it’s ourselves, our friends and family, or even public figures, taking care of behavioral health is no longer taboo—it’s vital, and it’s only human. At Eleos, we are on a mission to help deliver the world’s most effective behavioral care through data, measurement, and personalization. Simply put, we want to empower clinicians to do the essential work only they can do.

What is this opportunity?

We are looking for a Senior Full Stack Engineer (Front- End Oriented) to join our innovative team. In this role, you will lead the development of user-centric, cutting-edge interfaces that empower clinicians and improve the effectiveness of behavioral health care. If you thrive in building complex, scalable, and beautiful frontend systems, this role is for you.

What are we looking for? You are a highly experienced frontend engineer with extensive expertise in React and modern frontend development practices. You have a proven track record of delivering scalable and maintainable user interfaces. You are passionate about UX/UI design and have the technical ability to bring those designs to life seamlessly.

How will you contribute?

• Lead the design and development of complex frontend features and interfaces.
• Collaborate closely with product managers and UX designers to create user-friendly solutions.
• Optimize frontend performance to ensure fast and reliable applications.
• Drive best practices in code quality, testing, and documentation.
• Mentor junior engineers and contribute to the growth of the team.

Who are you?

• 5+ years of experience in frontend development.
• Strong proficiency with modern JavaScript frameworks such as React, Angular, or Vue.
• Experience working with JavaScript frameworks, particularly React and its ecosystem
• A real passion for JS and clean, maintainable code
• Deep awareness of cross-browser quirks and responsive design
• Experience with advanced React patterns including SSR, RSC, and micro frontend architectures
• Familiarity with Chrome extensions development and Chrome Web APIs (audio capturing, permissions, etc.)
• Team player with strong communication skills, egoless and transparent
• Ability to take ownership and make an impact

How will you contribute?

• Lead the design and development of complex frontend features and interfaces.
• Collaborate closely with product managers and UX designers to create user-friendly solutions.
• Optimize frontend performance to ensure fast and reliable applications.
• Drive best practices in code quality, testing, and documentation.
• Mentor junior engineers and contribute to the growth of the team.