Sr. Front-End Engineer (W2)

Braintrust; Los Angeles (CA); On-site; USD 160,000 - 190,000; Full time

Job summary

A leading technology company is seeking a Sr. Front-End Engineer to join their team. The role involves enhancing a high-traffic investor website using React while collaborating closely with UX designers and product managers. A strong emphasis is on creating re-usable components and ensuring high-quality code standards. Candidates should have significant experience in software development, particularly in web app technology, and should be proficient in modern JavaScript and React.

Qualifications

• At least 7 years of experience in software engineering/app development.
• Experience building public-facing transactional web applications preferred.
• Experience in banking, financial services, or e-commerce preferred.

Responsibilities

• Collaborate with product managers to validate requirements and designs.
• Implement re-usable components and collaborate with back-end engineers.
• Conduct code reviews to ensure code quality.

Skills

Proficiency in modern JavaScript (ES6+)

Proficiency in React

Proficiency in TypeScript

Understanding of React state management

Advanced CSS techniques

Proficiency in Git

Education

Undergraduate degree in computer science, engineering, or a technical field

Job description

Join to apply for the Sr. Front-End Engineer (W2) role at Braintrust

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Join to apply for the Sr. Front-End Engineer (W2) role at Braintrust

• Must be able to work 3 days a week on site (either LA or Irvine offices)
• Must be able to work under a W2 contract.
  
  

Job Description

• Long term contract until July 2025.
• Must be able to work 3 days a week on site (either LA or Irvine offices)
• Must be able to work under a W2 contract.
  
  

We are looking for a senior level front-end engineer to join our vibrant and high-performing team. We are completely overhauling the investor website that is used by millions of individual investors and tens of thousands of financial advisors across the U.S. Our front-end is built on React and sits on top of a RESTful service layer with the whole set up running on AWS. A collaborative React ninja with experience in building high-performing public facing transactional applications will be welcomed to our team. Join us.

Responsibilities & Duties:

• Work with product managers and other subject matter experts to validate requirements and related designs.
• Collaborate with UX designers to inform implementation and identify opportunities for componentization.
• Identifying, defining, and grooming of developer stories in collaboration with product owners/scrum master to prioritize and plan.
• Implementation of re-usable components and reference implementations (when needed).
• Collaborate with back-end engineers to design and agree upon on experience layer APIs.
• Work with QA / test team to define and develop test plans, suites, cases.
• Proactively ensure individual code quality (e.g., well organized, scalable, good component composition, etc.).
• Regularly conduct PRs / code reviews within the feature team to ensure broader code quality.
• May conduct some level of testing (e.g., unit testing, integration testing).
• Troubleshooting, eliminating bugs / defects, and making optimizations throughout the application lifecycle.
• Contributing to documentation throughout the application lifecycle (when needed).
• Occasionally develop prototypes and conduct proofs of concept.
  
  

Qualifications & Skills

• At least 7 years of experience in software engineering / app development.
• Experience building and supporting public facing transactional web applications preferred.
• Experience in banking, financial services, or e-commerce industry preferred.
• Undergraduate degree in computer science, engineering, or another technical field
  
  

Must Haves:

• Proficiency in modern JavaScript (ES6+), including concepts like closures, promises, async/await, and modules.
• Proficiency in React and its core concepts, including JSX, event handling, component lifecycle methods, and hooks.
• Understanding of React state management, API handling, react-redux patterns, and the Vite testing suite
• ReactJS frameworks, libraries, and developmental tools such as MaterialUI, Vitest, and Storybook, as well as working from design applications such as Zeplin.
• Interacting with RESTful APIs involves understanding best practices for efficiently fetching and handling data to ensure optimal performance and user experience.
• Using various tools and libraries to mock data and methods in a testing environment, such as Vite, Jest, and MSW (Mock Service Worker), and a comfort level using tools like Postman for advanced mocking scenarios.
• Proficiency in advanced CSS techniques, including CSS-in-JS. Must have experience with this pattern/approach, as it differs significantly from writing traditional stylesheets.
• Ensuring code quality with test case management tools and other utilities (e.g., linting tools)
• Proficiency in Git and Git concepts, including creating and managing pull requests, and conducting thorough pull request reviews.
• Proficiency in TypeScript, including a strong understanding of interfaces, types, generics, and advanced type features.
  
  

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Technology, Information and Internet

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