Senior Software Engineer (Front End)- HumanSignal

Company: Unusual Ventures
Location: San Francisco
Posted on: April 1, 2025

Job Description:

HumanSignal builds software that helps give meaning to data. We believe that data labeling is fundamentally a human effort in guidance, orchestration, and targeted feedback with AI to produce deeply meaningful actionable data context in real-world production applications. We believe such ability should be open, accessible, and practical for everyone in society. We believe in humans.We're growing engineering to support delivering novel product work in a data labeling automation platform powered by GenAI and agents. We're looking for the next group of passionate and talented engineers who desire to join and grow alongside us in our mission to build and deliver software that democratizes everyone's ability to harness these technologies.About the Opportunity:HumanSignal is looking for a Front-End Engineer who is comfortable working across the stack when necessary. You will be a key part of our efforts to ensure 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. This role is ideal for engineers who enjoy creating intuitive and impactful user interfaces and are passionate about building software that democratizes data labeling through AI and automation.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.Must have skills and experience:
  • Must have a degree in Computer Science or related degree
  • Prior experience working in a fast-paced startup
  • 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 (MobX, Redux, Vuex) and front-end build tools (Webpack, Vite).
  • Comfort working with backend technologies (e.g., Django, REST APIs, 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:Django, Django REST Framework, Python, JS, Typescript, MobX, React, Jest, Cypress, AWS, Kubernetes, Postgres & Redis, OpenAI API, Spark, BigQuery, KafkaMore about HumanSignal:In late Spring 2022, HumanSignal raised $25 million in Series A funding, bringing our total funds raised to $30 million from notable investment partners Redpoint Ventures, Unusual Ventures, Bow Capital, Swift Ventures, as well as angel investors.HumanSignal is a fully distributed organization with people all over the world. We have team members in North America, Europe, and South America across 6 countries.
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Keywords: Unusual Ventures, San Francisco , Senior Software Engineer (Front End)- HumanSignal, IT / Software / Systems , San Francisco, California