Senior Engineer, Full Stack

Join Halcyon Labs – Powering the Future of Digital Marketing Halcyon Labs is transforming e-commerce by building the infrastructure for human-led curation at scale. We help brands run performance-driven creator programs while enabling top creators to monetize their influence and partner directly with the brands they love—driving discovery through trusted tastemakers and authentic recommendations. Halcyon Labs recently became a unicorn, raising at a $1.5B valuation with backing from Bessemer Venture Partners, Avenir Growth Capital, and Bain Capital Ventures. At Halcyon Labs , you're building the future of human-led commerce for the world's best brands, tastemakers, and shoppers. You move fast and see immediate impact in your work, alongside accomplished teammates who are driven by helping find the world's best things. If you’re excited to help shape the future of curated commerce at the intersection of technology, culture, and taste, we’d love to meet you. About the Role: We’re looking for a talented and experiencedSenior Full Stack Engineer to join our growing engineering team. In this role, you’ll collaborate closely with fellow engineers to build and scale a variety of full stack initiatives—from API design and UI development to data pipeline optimization and internal tooling. Your Impact to the Role: Design and implement APIs using Node.js Build and maintain user interfaces with React and Redux Ensure platform performance, scalability, and long-term maintainability Develop and optimize data pipelines and internal tools Deploy production-ready applications on AWS using containerization, ALB, and ECS Monitor system performance and proactively implement improvements Maintain high standards for code quality, structure, and best practices You Are Energized By: Having a significant impact on our innovative platform and shape the future of influencer and affiliate marketing Collaborating with the CTO to develop and implement full stack projects Solving complex technical challenges with clean, efficient, and scalable code Making a meaningful impact on an innovative platform shaping the future of influencer and affiliate marketing Collaborating closely with technical leadership to bring full stack projects to life Solving complex problems with clean, efficient, and scalable solutions What We're Looking For: Strong proficiency in React, NodeJS and Relational Databases Deep understanding of JavaScript language nuances and best practices Intermediate knowledge of UI design, including SCSS and animations Experience deploying production-ready projects on AWS, including containerization, ALB, and ECS Familiarity with logging and alerting using CloudWatch or alternative monitoring technologies Keen attention to detail in code structure and style Bachelor's Degree in Computer Science or Engineering 5+ years of experience with JavaScript-based front-end languages 3+ years of experience with React and Redux 3+ years of experience developing APIs in NodeJS Bonus Points: Experience working in high-growth startups or fast-paced product environments Enjoy mentoring and helping shape engineering best practices and team culture We are hiring at multiple levels therefore the compensation for this role will fall be between $145,000-$225,000 annually. In compliance with New York Pay Transparency Law, the salary range for this position is as shown. We note that salary information as a general guideline only, actual compensation may vary from posting based on the offer for this role, including the scope and responsibilities of the position, relevant work experience, key skills, education, training and business considerations. New York Pay Range $145,000—$225,000 USD The provided salary range is base salary, exclusive of bonus potential or commission and is a good faith estimate of cash compensation. Halcyon Labs is flexible pending candidate's experience and how our business needs evolve throughout the search. Every employee of Halcyon Labs receives equity on top of cash compensation! Halcyon Labs offers a bundle of benefits on top of being a great place to work. Our teammates are provided benefits such as: Medical & Dental Coverage at 70% Equity in Halcyon Labs Flexible PTO 14 weeks of parental leave Wellness & Social Stipend Technology Stipend Learning & Development Stipend 401k program (3% automated contribution from Halcyon Labs !) Wellhub Membership Company retreats Opportunity to monetize your influence- all employees build out a Halcyon Labs page! Birthday PTO Brand new NYC HQ office Originally posted on Himalayas