Hybrid Senior Full-Stack Engineer II Frontend/Backend Leader

HellaGoodAudio; Renton (WA); Hybrid; USD 159,000 - 238,000; Full time

Benefits offered by this job

Health & Wellness

Time Off to Recharge

Financial Well-being

Life & Family Support

Volunteer and Community Initiatives

Learning & Development

Exclusive Perks

Job summary

Hasbro’s Digital Innovations team seeks a Senior Full Stack Engineer II to own end-to-end user-facing features across frontend, APIs, services, and data. You will mentor engineers, drive cross-stack design, and ensure performance, security, and accessibility while collaborating with Product and UX.

You will design GraphQL schemas, build backend changes in C#/.NET or Node.js, and operate production services on AWS.

Qualifications

• 7+ years building and shipping web products across frontend and backend.
• Strong frontend experience with Vue 3 and/or React + TypeScript, including large-codebase maintainability and accessible UI development (WCAG-aligned).
• Experience defining or evolving state management, component architecture, and design systems.
• Backend and data experience designing GraphQL/REST APIs and implementing services in C#/.NET and/or Node.js, with PostgreSQL/SQL + MongoDB.
• Experience operating production services in AWS (deployments, debugging, scaling/observability basics).
• Proven track record to lead cross-team execution through clear design docs, technical discussions, partner alignment, and mentoring.
• Hands-on experience using AI agents for production delivery including validating and correcting AI-generated code.

Responsibilities

• Lead cross-functional initiatives delivering user-facing features end-to-end.
• Define frontend standards for Vue 3/React with TypeScript, including component and build system APIs, promote state and GraphQL data patterns, performance budgets, and accessibility WCAG alignment.
• Design and evolve GraphQL schemas and APIs that match product workflows.
• Build and ship backend changes in C#/.NET and/or Node.js, and make data model changes in Postgres/MongoDB driven by usage and frontend needs.
• Mentor a team of engineers via pairing and code/design reviews to drive adoption of domain standards.
• Participate in on-call and incident response for your domain; drive root-cause fixes and embed security-by-default in features and APIs.
• Guide engineers in using AI agents effectively: model agent workflows for software development, share patterns for instructing agents, and help engineers get up to speed.

Skills

Vue 3

React + TypeScript

State management

GraphQL/REST APIs

AWS

Mentoring

AI agents

Tools

PostgreSQL

MongoDB

C#/.NET

Node.js

Job description

Hasbro’s Digital Innovations team seeks a Senior Full Stack Engineer II to own end-to-end user-facing features across frontend, APIs, services, and data. You will mentor engineers, drive cross-stack design, and ensure performance, security, and accessibility while collaborating with Product and UX.

You will design GraphQL schemas, build backend changes in C#/.NET or Node.js, and operate production services on AWS.