Senior Frontend Typescript Engineer

Fingerprint

Berlin Center

Type of work

Undetermined

Experience

Senior

Employment Type

B2B

Operating mode

Remote

Tech stack

TypeScript

advanced

React

advanced

PostgreSQL

advanced

Amazon AWS

regular

Node

junior

Job description

Online interview

We’re looking for a senior frontend engineer to maintain and improve our JavaScript agents (FingerprintJS and the browser SDK of Fingerprint Pro). This position doesn’t imply making user interfaces, it implies working with browser and server APIs. JavaScript agents are projects made by developers for developers with love.

Examples of Projects you may work on:

Design, document and implement new features of the JavaScript agents
Conduct experiments with the agents
Use native browser JavaScript APIs (we use few third-party libraries in runtime)
Push TypeScript and other tools to their limit
Contribute to an OSS project with 17K+ stars and 23B+ monthly usages
Optimize the code (both size and performance)
Write unit tests for their code and check it manually
Work with engineers who develop the backend for the SDK
Make Node.js scripts that help build, test and update the agents

Requirements:

Strong TypeScript knowledge
Experience of writing asynchronous code with parallel execution
Being comfortable working with browser APIs (DOM, AJAX, page lifecycle events, etc.)
General understanding of the HTTP protocol and web security
Jasmine, Jest or a similar test framework
Passion for writing ideal code
High level of personal ownership and autonomy, which requires experience working without clearly defined requirements
Good English for verbal and written communications inside the company

An ideal candidate will also have:

Experience with Rollup
Experience configuring GitHub Actions
Deep knowledge of browser JavaScript APIs
Browser automation experience
Experience with Open API
Historical record of open source contributions
Experience with technical writing
Willing to learn something new

Our stack:

Backend: TypeScript, Node, Express.
Frontend: TypeScript, React, Storybook.
AWS (Elastic Beanstalk, RDS/Aurora, SQS)
Netlify/CloudFront.
PostgreSQL.