Senior Frontend Engineer

About the Opportunity

HumanSignal is seeking a Senior Frontend Engineer to join our growing engineering team. This role is pivotal in delivering novel product work in our data labeling automation platform powered by GenAI and agents. As a Senior Frontend Engineer, you will be a key player in ensuring our platform is user-friendly, reliable, and scalable. You will collaborate with backend engineers, product managers, and designers to create intuitive and responsive web applications that meet the needs of our growing user base.

Responsibilities

• Develop and maintain front-end components for our data labeling platform, focusing on performance, scalability, and user experience.
• Work closely with product, design, and other engineers to translate requirements and mockups into intuitive user interfaces.
• Participate in code reviews, architecture discussions, and the entire development process, from ideation to production.
• Establish standards for front-end development, including code style, maintainability, and best practices.
• Identify areas for improvement in the codebase and drive changes that enhance the overall quality of the product.
• Mentor and provide guidance to junior engineers on best practices and coding standards.

What You'll Bring

• Extensive experience developing front-end applications with modern JavaScript frameworks (React, Angular, Vue.js).
• Strong knowledge of HTML, CSS, and JavaScript (ES6+), with a focus on cross-browser compatibility, accessibility principles, and delivering high-quality, maintainable code.
• Familiarity with state management libraries (Redux, Vuex) and front-end build tools (Webpack, Vite).
• Comfort working with backend technologies (e.g., REST APIs, Django GraphQL) and willingness to dive into backend code when needed.
• A keen eye for design and UX, with a drive to build intuitive and visually appealing interfaces.
• High user empathy and a focus on delivering value through thoughtful, well-crafted user experiences.
• A passion and aptitude for impactful communication at a Sr+ SWE IC level, using TDDs, code reviews, presentation, and thoughtful feedback.
• BSCS, related degree or equivalent practical experience.

Languages, Frameworks, and Technologies We Use

• Python, Django, JS, Typescript, React, OpenAI API, Spark, BigQuery, Kafka, Jest, Cypress, AWS, Kubernetes, Postgres & Redis.

Within 1 Week, You'll:

• Setup your development environment, and enhance the self-serve documentation and workflows to ensure it's pristine and effective.
• Meet your buddy, team, key stakeholders, and the founders.
• Participate in team meetings and get close to the sprint in progress.

Within 1 Month, You'll:

• Make multiple production contributions, across small features, enhancements, and bug fixes as you ramp up on codebase, systems, workflows, and product.
• Give feedback in retrospectives, bringing in your experiences and a desire to build a world-class engineering team.
• Review multiple pull requests, and leverage your convictions as a software engineer to see design patterns, code style, and syntax upheld.
• Resolve multiple engineering-dependent customer support requests—quickly get to the root cause and resolve complex technical issues.

Within 3 Months, You'll:

• Independently drive and fully own development and delivery of complex features, and present on them in company meetings.
• Review PRDs and lead creation or review of TDDs, experience and give feedback across a quarterly OKRs cycle, and help the team understand and plan its next quarter commitments.
• Continue to engineering team to improve our velocity and predictability.
• Contribute to our industry-leading Open Source products and community (with over 20K+ users).
• Mentor and guide junior engineers.

Within 6 Months, You'll:

• Take the lead and own major features collaborating with other engineers for successful delivery.
• Leverage your experience to work closely with Product Management, Engineering, and Customer Support staff to identify, document, and help resolve technical issues and product feature/functionality gaps.
• Support and help grow the open source community through your participation in meet-ups, design/code camps, and technical speaking engagements.
• You will play a key role in shipping highly scalable products and the next evolution in labeling software.

In 1 Year, You'll:

• Continue delivering increasingly complex projects.
• Play an active role in advancing your career to the next level.

At HumanSignal, we pay based on regional compensation market rate ranges across the globe. We are hiring for this role across North and South America as well as Europe. The base cash compensation range is $140,000 to $200,000 USD. These ranges are provided by market data and are in good faith. The final offer details are determined by several factors including candidate experience, expertise, as well as applicable industry knowledge and may vary from the pay ranges listed above.

It is an exciting time at HumanSignal, we are a growing startup and at this stage, we are constantly evolving. While we have put a lot of thought into your first and most important initiatives, it's only an example and something we will work on together. We're always learning and growing, so like us this role will evolve and expand. We hope that this opportunity sounds exciting to you and that you consider joining us on our journey!