Senior Full-Stack Engineer (JavaScript, Node.js)

Salary: $141000 - 182000 per year Requirements: Minimum of 5 years of professional software development experience. Proficient in programming languages: Python, JavaScript, and SQL. Proven ability to manage projects autonomously from start to finish. Experience in developing production web applications using React with a Python backend; FastAPI experience is a plus. Strong SQL expertise with familiarity in cloud data warehouses; Snowflake experience preferred but not mandatory. Familiar with integration tasks; MuleSoft experience desired, but other integration platforms or custom API experience is acceptable. Hands-on experience deploying and managing services on AWS, particularly using container services like ECS/ECR. Competent with CI/CD tools, particularly GitHub Actions. Strong communication abilities to convey technical concepts to diverse audiences. Experience in a regulated environment with a focus on data sensitivity and compliance. Responsibilities: Take full ownership of intricate full-stack projects, from initial scope through architecture to production and ongoing monitoring. Develop and implement user-centric applications utilizing React for the frontend and Python services for the backend, with FastAPI preferred. Create, sustain, and enhance data pipelines and transformations for Snowflake or similar cloud data platforms. Design and execute integrations between internal systems and external services; MuleSoft experience preferred, but other platforms or custom API work is also suitable. Deploy and manage containerized services on AWS (ECS, ECR) and oversee related CI/CD pipelines primarily using GitHub Actions. Refine and productionize prototypes and tools produced by other teams to ensure usability for non-engineers. Lead code evaluations, establish engineering standards, and uphold technical documentation. Mentor fellow engineers, offer technical guidance, and enhance engineering quality throughout the team. Ensure compliance of engineering work with data sensitivity and regulatory requirements typical to the insurance and finance sectors. Technologies: AI API AWS Backend CI/CD Cloud FastAPI Frontend GitHub JavaScript MuleSoft Python React SQL Snowflake Swift Web Architect DevOps Terraform Fullstack More: At Halcyon Labs, we are pioneering a technology-driven approach to revolutionize how individuals purchase and manage their insurance. Our mission emphasizes automation, AI-integrated self-education and enrollment, combined with modern engineering methodologies that facilitate swift and secure operations. Joining our close-knit, high-trust engineering team presents a unique opportunity to influence architectural frameworks, data strategies, and the integrations that fuel our operations. We offer a competitive base salary ranging from $140,000 to $180,000, dependent on experience and expertise, with onsite flexibility in Tampa, FL. We prioritize a supportive culture with various benefits including a 401(k) plan with company matching, comprehensive healthcare options, ample paid time off, a fully equipped onsite gym, and a cafeteria with fresh meals. last updated 25 week of 2026