Senior Full Stack Engineer - Lingo E-Commerce Platform

The Opportunity

This position works out of our Alameda, CA location in the Lingo Division. Working on Lingo, you will help build a next-generation technology that enables individuals to make decisions about how to improve energy, lose weight or enhance athletic performance.

What You'll Work On:

• Design and architect scalable features for our Direct-to-Consumer e-commerce platform built on Next.js and Azure
• Own critical systems including payment processing, CMS integration, authentication, and commerce workflows
• Lead technical initiatives from design through deployment, ensuring performance, security, and reliability
• Build and optimize our TypeScript monorepo using Turborepo, balancing shared code with application independence
• Drive integration strategy for third-party platforms including CommerceTools, Contentful, Auth0, Braze, and payment gateways
• Establish engineering standards and best practices across testing, monitoring, and deployment
• Mentor mid-level and junior engineers through code reviews, pair programming, and technical guidance
• Collaborate with Product, Design, and cross-functional stakeholders to translate business requirements into technical solutions
• Optimize application performance including Core Web Vitals, bundle size, and serverless function efficiency
• Contribute to architectural decisions that impact the scalability and maintainability of the platform
• Champion accessibility, internationalization, and compliance requirements (GDPR, PCI-DSS)

Required Qualifications:

• 6+ years of professional software engineering experience, with at least 3 years in full-stack roles
• Expert-level proficiency in TypeScript with deep understanding of advanced types, generics, and type safety patterns
• Extensive experience building production applications with React and Next.js (App Router, Server Components, API routes)
• Proven track record building and scaling e-commerce platforms with hands-on experience in Direct-to-Consumer (DTC) business models
• Strong understanding of payment systems, including third-party integrations, fraud prevention, and PCI compliance
• Experience architecting and maintaining serverless applications (Azure Functions, AWS Lambda, or similar)
• Deep knowledge of web architecture, performance optimization, and scalable infrastructure
• Experience with headless CMS platforms and content modeling
• Proficiency with modern testing strategies including unit, integration, and E2E testing
• Strong communication skills and ability to influence technical decisions across teams
• Experience mentoring engineers and elevating team technical capabilities

Preferred Qualifications:

• Experience with Azure ecosystem (Functions, Service Bus, Blob Storage, Application Insights) or equivalent AWS services
• Hands-on experience with CommerceTools or similar commerce platforms
• Deep knowledge of Next.js including streaming, caching strategies, and edge runtime optimization
• Experience with monorepo tools like Turborepo
• Knowledge of authentication protocols (OAuth 2.0, SAML, JWT) and identity providers like Auth0
• Experience with error monitoring tools such as Sentry or New Relic
• Understanding of CDN strategies, edge computing, and global content delivery
• Experience with Docker, containerization, and CI/CD pipelines
• Contributions to open source or demonstrated thought leadership in the web development community