Senior Software Engineer

CassianRx

Philadelphia, PAFULL_TIMEPosted Aug 3, 2026

Role responsibilities

Design and develop scalable, secure back-end systems and integrate complex data flows for the ONE Journey platform. Shape architectural decisions and tune application performance within a focused engineering team.

Requirements

Requires 5-10 years of professional software development experience and a degree in Computer Science or a related STEM field. Proficiency in Node.js, React, and AWS is essential, with a strong foundation in algorithms and system design.

Key skills

Node.js, Express, React.js, JavaScript, SQL, MySQL, AWS, RESTful API Design, Redis, Mocha, Chai, Git, System Design, Object-Oriented Programming, Backend Development, Full-stack Development

Keywords

Node.js, Express, React.js, JavaScript, SQL, MySQL, Redis, AWS, EC2, ECS, SQS, Lambda, Elastic Beanstalk, S3, RESTful, Mocha, Chai, Git, Trunk-based Development, HIPAA, SaaS, Healthcare Technology, System Design, Algorithms, Data Structures, Object-Oriented Programming, Backend, Full-stack, Scalability, Security