Senior Full Stack Engineer

Sphinx builds software to solve complex national security problems in Space. They are hiring a Senior Full Stack Engineer to build mission planning and command and control software for space communications programs. The role involves leading front-end development and contributing across the full stack, with technologies like React, Angular, Vue, Python, and Docker.

• Applying a strong understanding of modern front-end development to build intuitive, responsive, and maintainable user experiences using technologies such as JavaScript, TypeScript, React, Angular, and/or Vue
• Translating design mockups, user feedback, and system requirements into functional, visually appealing, and intuitive user interfaces
• Building performant, secure, and well-tested web applications with a focus on scalability, automation, usability, and security
• Leading the development of critical features across the full software development lifecycle, with significant influence from user feedback, system requirements, design engineering, and evolving customer needs
• Designing, developing, and improving APIs and backend services that effectively support front-end applications and system capabilities
• Developing and maintaining backend functionality using technologies such as Python, SQL, RESTful APIs, and containerized architectures
• Collaborating closely with QA and other engineering disciplines to define acceptance criteria, meet functional and technical requirements, identify defects, and ensure software quality
• Writing and maintaining automated unit, integration, and functional tests to validate functionality and ensure requirements are met
• Conducting thorough code reviews to maintain code quality, enforce best practices, and ensure adherence to established standards
• Advocating for improvements to product usability, quality, security, and performance that positively impact your team and end users
• Supporting junior engineering talent through mentorship and technical guidance

• 5+ years of progressively responsible web or software development experience
• Strong front-end development experience, with a deep understanding of modern UI development principles, component-based architecture, responsive design, performance, and usability
• Extensive experience with JavaScript, TypeScript, HTML, CSS, and modern front-end frameworks such as React, Angular, and/or Vue
• Experience translating designs, user needs, and requirements into intuitive, production-quality user experiences
• Strong full-stack fundamentals with the ability to work effectively with backend systems, including Python, API development and integration, application architecture, and service-to-service communication
• Experience working with relational databases and SQL, including querying and integrating data into web applications
• Experience designing, consuming, and integrating APIs between front-end applications and backend services
• Understanding of modern containerized and microservices architectures using technologies such as Docker and Kubernetes
• Experience collaborating with QA throughout the software development lifecycle, including defining acceptance criteria, troubleshooting defects, validating functionality, and supporting release readiness
• Demonstrated experience writing automated tests and developing software against defined user, functional, and technical requirements
• A strong understanding of software engineering best practices, including code reviews, version control, automated testing, security, performance, and maintainability
• Comfort working with ambiguity, self-directing your work, and providing technical guidance to other engineers
• A demonstrated ability to own technical problems end-to-end and make sound engineering tradeoffs
• Excellent communication skills and experience working with end users and cross-functional teams to design and build solutions that meet their needs
• Experience developing, testing, and deploying software within air-gapped or highly secure government network environments
• Have the ability to hold and maintain a U.S. Government TS/SCI clearance

• Competitive salary
• Meaningful equity ownership
• Profit sharing
• Employer 401(k) contribution
• 100% employer covered medical, dental, and vision insurance for you and your dependents