Hire Hangar

Senior Frontend Engineer

Argentina, Bolivia, Chile full-time Senior $1,500 - $4,000
full-time Senior level Technology & IT Salary listed Curated
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About the role

Join Hire Hangar and work with fast-growing global companies while building a long-term career.
Job Title: Senior Frontend Engineer
Location: Remote
Time Zone: US Time Zones (EST–PST)
Role Overview
We are seeking a Senior Frontend Engineer to build AI-powered product interfaces and analytics-driven user experiences. This role is ideal for someone who enjoys building highly interactive frontend applications using modern React architecture and AI integrations.
Key Responsibilities

Build and maintain frontend applications using React 19 and Next.js App Router

Develop dashboards and data-heavy interfaces

Translate designs into responsive production-ready UI

Build complex forms and scalable frontend components

Integrate AI-powered workflows and LLM functionality

Work with real-time frontend data flows

Optimize frontend performance and usability

Collaborate with product, design, and engineering teams remotely

Required Qualifications

Strong production experience with React 19 and Next.js App Router

Expert-level TypeScript strict mode experience (non-negotiable)

Strong Tailwind CSS implementation skills

Experience building dashboards, analytics tools, or data-heavy applications

Experience with Server Components and frontend state management

Production experience integrating LLM APIs into applications

Practical prompt engineering experience

Experience with OpenAI APIs or AI SDKs

Familiarity with AI-assisted development tools such as Cursor, Copilot, or Claude Code

Experience working with Supabase or similar BaaS platforms

Ability to work with PostgreSQL schemas and relational data structures

Experience implementing polling and real-time data-fetching patterns

Strong written and verbal English communication skills

Prior remote work experience, be fluent with remote collaboration tools and platforms (such as Slack, Zoom, Google Workspace, Jira, Linear, or similar), and have ideally worked with US or UK-based companies. Applications without this experience will not be considered.

Preferred Qualifications

Experience working on AI-native products

Familiarity with modern charting and visualization libraries

Experience contributing to design systems and scalable UI architecture

Tools & Technology

React 19

Next.js App Router

TypeScript

Tailwind CSS

Supabase

PostgreSQL

OpenAI API / AI SDKs

Cursor, Copilot, Claude Code

Google Workspace

Slack, Zoom, and other remote collaboration tools

Please NOTE
It is crucial that you complete the application form in full. As part of the application process, you will be required to record a video. If your application is successful, you will receive an email confirming next steps—the video is the first step of the interview process. If you do not record a video, we will not be able to consider you for ANY open roles.
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Originally posted on Himalayas

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Senior
Technology & IT API integration CSS Data Analysis Javascript MySQL Senior level

Likely questions

  1. Tell us about work you have done that is close to the Senior Frontend Engineer role.
  2. How would you approach your first 30 days at Hire Hangar?
  3. Which of API integration, CSS and Data Analysis have you used recently, and what did it help you achieve?
  4. How have you led people, improved a process, or made a hard decision in a previous role?
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with API integration, CSS and Data Analysis.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Senior Frontend Engineer role because I can bring practical experience in API integration, CSS and Data Analysis, learn the team quickly, and contribute to the outcomes Hire Hangar needs from this hire.

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