Senior Full Stack Engineer – SaaS Applications

Sophia

Senior Full Stack Engineer designing, building, and supporting the Sophia learning platform's applications. Collaborating with product and business stakeholders, mentoring engineers, and integrating AI capabilities.

Posted 5/22/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $103,900 - $155,900 per yearWebsite

Tech Stack

Tools & technologies

AWSCloudGoogle Cloud PlatformJavaScriptRuby

About the role

Key responsibilities & impact

Design, develop, and deliver full-stack features across Ruby and JavaScript applications, spanning database, backend, and user interface layers
Own technical direction by evaluating trade-offs, recommending solutions, and establishing scalable patterns and best practices
Collaborate cross-functionally with product managers, business analysts, QA, and engineering partners to shape requirements and deliver iterative releases
Practice and promote Agile development methodologies, including Test ‑ Driven Development (TDD), automated testing, and CI/CD pipelines
Participate in software releases, partner with QA on test plans, and assist with implementation planning
Troubleshoot and resolve production issues, perform root cause analysis, and recommend long-term solutions
Provide level 3 production support for enterprise applications after release
Mentor and elevate other engineers through code reviews, pairing, and technical guidance
Participate in the continuous evolution of engineering standards, development workflows, and system reliability
Explore and apply AI capabilities, showing curiosity and enthusiasm for integrating AI-powered features and AI-assisted development workflows into the platform

Requirements

What you’ll need

Minimum of 5 years of experience in the design, development, and implementation of web applications
At least 5 years of hands-on experience with Ruby and JavaScript
Minimum of 2 years of experience working with AWS or GCP infrastructure
Experience applying Test-Driven Development (TDD) practices and building automated solutions
Bachelor's degree in Computer Science, Engineering, or a related discipline
Relevant cloud certifications (e.g., AWS Certified Solutions Architect, Google Cloud Professional certifications)
Experience with AI/ML tools, APIs, or AI-assisted development workflows
Demonstrated involvement in system architecture, technical decision-making, or long-term platform strategy

Benefits

Comp & perks

medical, dental, vision, life and disability plans
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
entertainment and retail discounts
Non-exempt employees are eligible for overtime pay

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

RubyJavaScriptTest-Driven Development (TDD)automated testingCI/CD pipelinesAWSGCPAI/ML toolssystem architectureroot cause analysis

Soft Skills

collaborationtechnical directionmentoringproblem-solvingcommunicationcuriosityenthusiasm

Certifications

AWS Certified Solutions ArchitectGoogle Cloud Professional certifications