Sr AI/Backend Software Engineer

**WHO ARE YOU?**You are a high‑impact Senior Software Engineer driven by innovation and excited to apply your technical expertise in building and scaling solutions that have a positive impact.WHO ARE WE? We are passionate, innovative, lifelong learners, and creative thinkers working to develop culturally authentic language learning products for K-12 schools and universities. **WHAT IS THIS ROLE ABOUT?**In this Senior Software Engineer role, you will join our talented and collaborative Development team, in designing, building, and scaling backend systems while integrating AI‑powered capabilities. You will play a key role in shaping our innovative, industry‑leading language education products for the K‑12 and Higher Education markets.OUR TECHNOLOGY STACK

• Languages/Frameworks: Ruby/Rails, JS, Vue
• Persistence: MySQL, Postgres, Redis, ElasticSearch
• Hosting: AWS

IN THIS ROLE YOU WILL:

• Participate in all aspects of the Software Development Lifecycle (SDLC)
• Perform tests to optimize performance
• Write clean code to develop functioning web applications
• Work effectively and collaborate with different team members to deliver on-time and efficient projects

YOU MUST HAVE (MINIMUM REQUIRED SKILLS & EXPERIENCE)* Bachelor’s Degree

• 7+ years of experience as a Senior Software Engineer working with Ruby, Ruby on Rails or Python + JavaScript
• Demonstrated software architectural design experience, including data persistence and API design
• Strong understanding of Large Language Models (LLMs), LLM APIs
• Strong understanding of networking and web browser protocols
• Advanced working knowledge of *nix systems, and comfort working at terminal command line.
• Advanced SQL and DB schema design knowledge
• Advanced working knowledge of git & GitHub
• Experience collaborating with other departments/teams
• Strong communication, listening and interpersonal skills to be able to actively listen to needs and respond to audience appropriately

IDEAL IF YOU HAVE or ARE (PREFERRED SKILLS & EXPERIENCE)

• Backend/Full stack development and AI Tooling experience
• Knowledge around LLM evaluation and MLOps practices
• Experience with Sagemaker, AWS Poly, Azure Speech Service
• Experience with SQL, Postgres, Redis, Elasticsearch
• Experience building/deploying high-capacity applications in cloud environments, especially AWS
• A strong understanding of how to architect solutions for scalability and performance
• Experience with Ruby highly preferred
• Experience in ed-tech, education, language-learning or a similar industry
• Familiarity with Web Content Accessibility Guidelines (WCAG) and best practices for meeting 2.1 AA compliance

**LOCATION:**Boston-Hybrid or Remote - Eastern US Time Zone Position requires current residence within the United States of America and within the eastern time zone. Ideal candidates will be located within close proximity to our Boston office location and be willing to work a Tuesday and Thursday (2-day minimum) Hybrid schedule. Relocation assistance is not available. SALARY: $140k-$150k annual base salary range This position is salaried and is eligible for an annual incentive based on employee and organizational performance.