Senior Fullstack Software Engineer, Social Play

Every day, tens of millions of people come to Halcyon Labs to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Halcyon Labs, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Halcyon Labs means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Senior Software Engineer on the Social Play team, you will build systems and applications across the stack to create the best experience for players to play games with their friends and discover new games through social factors. Your work will power the Halcyon Labs ecosystem, deepening connections through features that make every session better with friends. You'll drive co-play, help players discover new games through their social graph, and shape how players find and join each other in real time. You will drive company-level objectives for user engagement through impact like joint play time. If you are an experienced developer who loves to write code and ship user-facing features, you’ll be right at home with our product-focused team. You’ll be a fullstack engineer who will influence product and engineering to shape both the technical platform and the player-facing surface — building a richer, more social Halcyon Labs You Will: Ship features and work across the stack with an end-to-end understanding of our features. This role will be frontend leaning. Collaborate with other engineering, product, and design teams to define and build platform features to enable users to express their identities Drive individual projects from end to end, ensuring they are well-planned, executed efficiently, run experiments, and deliver meaningful impact. You Have: 3+ years of experience building full-stack systems, including backend, APIs, and frontend applications. Bachelor's degree or higher in Computer Science or a related field. Familiar with A/B testing and experience on a Product team (Bonus) You Are: Proactive: You operate with a sense of urgency, initiating conversations and workflow that pushes team projects and people forward Scrappy: You are willing to dive into any tech stack to solve problems, and can easily adapt to any situation when the need arises and come up with the right solution. A product owner: You champion for changes that align with the needs of our users For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page . Annual Salary Range $196,750 — $243,290 USD Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted). Halcyon Labs provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Halcyon Labs also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process. For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.