Sophia Learning is an innovative education platform that helps students save time and money by offering low-cost, self-paced online courses designed to transfer for college credit. Our mission is to make higher education more accessible by delivering flexible, high-quality learning experiences that support students at every stage of their educational journey.As a Senior Full Stack Engineer, you will play a critical role in designing, building, and supporting the mission-critical applications that power the Sophia learning platform. You will take ownership of technical decisions, mentor other engineers, and collaborate closely with product and business stakeholders — your internal clients — to translate complex requirements into scalable, reliable solutions. You'll help us embrace and mature an agentic software development lifecycle — directing AI coding tools to build and ship efficiently — while staying personally accountable for the quality of what you deliver.What You'll DoDesign, develop, and deliver full-stack features across our web applications, spanning database, backend, and user interface layersTake end-to-end ownership of the features and services you build — from technical direction through delivery, quality, and production healthOwn technical direction by evaluating trade-offs, recommending solutions, and establishing scalable patterns and best practicesCollaborate cross-functionally with product managers, business analysts, QA, and engineering partners — your internal clients — to shape requirements and deliver iterative releasesPractice and promote Agile development methodologies, including Test-Driven Development (TDD), automated testing, and CI/CD pipelinesParticipate in software releases, partner with QA on test plans, and assist with implementation planningTroubleshoot and resolve production issues, perform root cause analysis, and recommend long-term solutionsProvide level 3 production support for enterprise applications after releaseMentor and elevate other engineers through code reviews, pairing, and technical guidanceParticipate in the continuous evolution of engineering standards, development workflows, and system reliabilityHelp embrace and mature our agentic software development lifecycle — applying AI coding agents and AI-assisted workflows to build efficiently, and bringing curiosity and enthusiasm for integrating AI-powered features into the platformWhat You BringTechnical ExpertiseDemonstrated proficiency across modern web application stacks, comfortable learning and shipping in whatever language a project requiresExperience designing and developing across all tiers of modern web applicationsStrong understanding of object-oriented programming principles and established design patternsExperience working with relational databases, including writing complex SQL queries, with familiarity in NoSQL technologiesKnowledge of responsive web design principles and modern front-end frameworksExperience with cloud platforms, such as Amazon Web Services (AWS) and/or Google Cloud Platform (GCP)Familiarity with containerization and orchestration technologies, including Docker and Kubernetes, as well as cloud-native architecturesExperience with CI/CD pipelines, automated build and deployment processes, and version control systems (e.g., Git)Experience working in Agile development environments, utilizing tools such as JiraExposure to, or a demonstrated interest in, agentic engineering principles and maturing an agentic software development lifecycleProfessional ExperienceMinimum of 5 years of experience in the design, development, and implementation of web applicationsAt least 5 years of hands-on full-stack development experience across modern web technologiesMinimum of 2 years of experience working with AWS or GCP infrastructureExperience applying Test-Driven Development (TDD) practices and building automated solutionsPreferred QualificationsBachelor's degree in Computer Science, Engineering, or a related disciplineRelevant cloud certifications (e.g., AWS Certified Solutions Architect, Google Cloud Professional certifications)Experience with AI/ML tools, APIs, or AI-assisted development workflowsDemonstrated involvement in system architecture, technical decision-making, or long-term platform strategyOtherMust be able to travel up to 10% of the timeMust be able to lift 25 lbsTypical office settingMobility within the office including movement from floor to floorTravel via plane, car, and metro may be required to perform this jobMust be able to work more than 40 hours per week when business needs warrantAccess information using a computerEffectively communicate, both up and down the management chainEffectively cope with stressful situationsStrong mental acuityRegular, dependable attendance and punctuality are essential functions of this jobOther essential functions and marginal job functions are subject to modification#LI-JD1SEI offers a comprehensive package of benefits to employees scheduled 30 hours or more per week. In addition to medical, dental, vision, life and disability plans, SEI employees may take advantage of well-being incentives, parental leave, paid time off, certain paid holidays, tax saving accounts (FSA, HSA), 401(k) retirement benefit, Employee Stock Purchase Plan, tuition assistance as well as entertainment and retail discounts. Non-exempt employees are eligible for overtime pay, if applicable.SEI is an equal opportunity employer committed to fostering an inclusive and collaborative culture where individuals can grow their careers and contribute fully. We strive to attract talent with broad experiences, skills and perspectives. We welcome applications from all. While it is not typical for an individual to be hired at or near the top end of the pay range at SEI, we offer a competitive salary. The actual base pay offered to the successful candidate may vary depending on multiple factors including, but not limited to, job-related knowledge/skills, experience, business needs, geographical location, and internal pay equity. Our Talent Acquisition Team is ready to discuss your interest in joining SEI. The expected salary range for this position is below.