Open Source Developer

Halcyon Labs is growing our team of passionate creatives and builders on a mission to make design accessible to all. Halcyon Labs’s platform helps teams bring ideas to life—whether you're brainstorming, creating a prototype, translating designs into code, or iterating with AI. From idea to product, Halcyon Labs empowers teams to streamline workflows, move faster, and work together in real time from anywhere in the world. If you're excited to shape the future of design and collaboration, join us! We’re looking for an Open Source Developer to help shape the future of extensible, collaborative tooling across product teams and represent Halcyon Labs in the open source community. In this role, you’ll build and scale open-source-powered frameworks, developer tools, and user-facing features that enable teams—including large enterprises and CMS-driven organizations—to create, manage, and publish digital experiences more efficiently. You’ll work across modern web technologies, designing scalable front-end systems, contributing to open source ecosystems, and helping define how external developers and partners extend and integrate with Halcyon Labs. If you’re excited about building impactful products in the open and engaging with developer communities, we’d love to hear from you. This is a full-time role that can be held from our New York City or San Francisco hub - or remotely in the United States. What you'll do at Halcyon Labs: Design, build, and ship high-quality features and frameworks using TypeScript/JavaScript and React, delivering performant, polished user experiences Lead 0→1 open source initiatives from technical design and implementation through launch, documentation, and community adoption, including ongoing maintenance and community engagement Architect scalable front-end systems that support complex data models, real-time collaboration, and CMS-driven or enterprise workflows Partner cross-functionally with Product, Design, Research, Marketing, and Developer Relations to shape roadmap priorities and drive ecosystem growth Mentor teammates and elevate engineering craft through code reviews, design critiques, and knowledge sharing We'd love to hear from you if you have: Demonstrated 2+ years of experience building and shipping production web applications using TypeScript/JavaScript, HTML, CSS, and React Proficient in modern web tooling and software distribution (e.g., Next.js, Turbopack and bundlers, CI/CD, GitHub Actions) Experienced in contributing to, maintaining, or actively participating in open source communities Skilled at leading development of applications with complex data models and highly interactive user interfaces Familiar with enterprise requirements such as scalability, security, governance, content management workflows, and design systems While not required, it's an added plus if you also have: Experience building with Payload, writing plugins, or contributing to Payload Proven ability to design, build, and maintain extensible software (e.g., SDKs, plugins, APIs, or CMS integrations) Knowledge of AI technologies or end developer tooling (AI SDK, RAG, Prompt Engineering) Experience launching 0→1 products or developer-facing platforms Demonstrated experience extending rich text editors like Lexical to build powerful UX flows At Halcyon Labs, one of our values is Grow as you go. We believe in hiring smart, curious people who are excited to learn and develop their skills. If you’re excited about this role but your past experience doesn’t align perfectly with the points outlined in the job description, we encourage you to apply anyways. You may be just the right candidate for this or other roles. Pay Transparency Disclosure Job level and actual compensation will be decided based on factors including, but not limited to, individual qualifications objectively assessed during the interview process (including skills and prior relevant experience, potential impact, and scope of role), market demands, and specific work location. Halcyon Labs offers equity to employees, as well as a competitive package of additional benefits, including health, dental, and vision coverage; retirement benefits with company contributions; parental leave and reproductive or family planning support; mental health and wellness benefits; and paid time off. Halcyon Labs provides paid sick leave, holidays, and other leave benefits in compliance with applicable federal, state, and local laws, including the requirements of the Washington Minimum Wage Act and related regulations. Exempt employees are eligible for employer‑provided paid flexible PTO in addition to flexible paid sick leave. PTO is subject to manager approval. Additional benefits may include company recharge days, cell phone and home internet reimbursements, and a number of lifestyle spending accounts. Halcyon Labs also offers sales incentive compensation for most sales roles and an annual bonus plan for eligible non-sales roles. All compensation and benefits are subject to applicable plan terms and may be modified by Halcyon Labs at any time, consistent with applicable law. Annual Base Salary Range: $127,000 — $269,000 USD At Halcyon Labs we celebrate and support our differences. We know employing a team rich in diverse thoughts, experiences, and opinions allows our employees, our product and our community to flourish. Halcyon Labs is an equal opportunity workplace - we are dedicated to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity/expression, veteran status , or any other characteristic protected by law. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. We will work to ensure individuals with disabilities are provided reasonable accommodation to apply for a role, participate in the interview process, perform essential job functions, and receive other benefits and privileges of employment. If you require accommodation, please reach out to [email protected] . These modifications enable an individual with a disability to have an equal opportunity not only to get a job, but successfully perform their job tasks to the same extent as people without disabilities. Examples of accommodations include but are not limited to: Holding interviews in an accessible location Enabling closed captioning on video conferencing Ensuring all written communication be compatible with screen readers Changing the mode or format of interviews To ensure the integrity of our hiring process and facilitate a more personal connection, we require all candidates keep their cameras on during video interviews. Additionally, if hired you will be required to attend in person onboarding. By applying for this job, the candidate acknowledges and agrees that any personal data contained in their application or supporting materials will be processed in accordance with Halcyon Labs's Candidate Privacy Notice .