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Lead Senior Frontend Engineer

HumanFirst

HumanFirst

Software Engineering
Remote
Posted on Nov 20, 2025

Description

HumanFirst is a leader in providing data-centric tools for natural language, used by many of the largest companies across the world. Using cutting-edge technology, HumanFirst helps teams in their digital transformation journeys by empowering them in the curation, management, and continuous improvement of NLU & NLG training data. Our platform accelerates any application where building quality conversational data is critical—whether that includes chatbots, virtual assistants, IVR, agent augmentation, analytics, or NLU-powered help centers.

We’re looking for a full-time senior front-end engineer with a strong inclination for UI, UX & accessibility. This role is primarily focused on the prototyping and integration of features within our React Typescript application where application performance is paramount. You will also take part in improving the front-end developer experience.

Responsibilities

  • Integrating components with the application core business logic
  • Implementing React-query based API consumers & managing server state caching logic
  • Improving the developer experience (testing, automation, etc.)
  • Updating existing components & integration of new components & workflows in our existing React, typescript web app
  • Collaborate with the entire development team to properly define new features & product behaviors

Requirements & experience

  • Mastery of Typescript, HTML & CSS
  • Solid understanding of the React ecosystem
  • Solid understanding of the Webpack ecosystem
  • UI/UX acumen
  • Self-disciplined
  • Solution-driven
  • Strong English communication, french is a plus.
  • Experienced with remote work
  • 5+ years of experience in a similar position
  • Based in Canada

Working with us

HumanFirst values entrepreneurial spirit, fostering creativity, self-motivation & different thinking. Responsible & autonomous individuals who are comfortable with light-weight processes will feel right at home. We value expertise, passion and out-of-the-box mindsets so if your career path doesn’t seem quite traditional, don’t worry about it, chances are you’ll fit right in!

Originally based in Montreal, we have grown into a fully remote team with colleagues in South Africa, North America, and Europe. Our communication channels include Slack, Gather, and Zoom, and we rely on Notion for documentation and JIRA for development work.

We’re the swiss army knife of NLU & NLG: A complete productivity suite for natural language data.

This is your chance to make a difference in a small team that’s scaling quickly & join our great startup adventure!