Senior Fullstack Engineer

# Senior Fullstack Engineer Summary Our  client is standing up a brand-new shared native app component platform for its North America team, and you'd own the backend backbone of it. This role is backend-heavy: you'll build the data proxies, unified data sources, caching, and auth/security layer the platform depends on, working closely with the client's engineering team in Austria. Frontend comfort is a real plus here, not the main event — some custom CMS work is also expected.

Requirements (Must-Haves)
* Excellent English communication skills — you'll interact directly with clients and cross-functional teams, including close day-to-day collaboration with an Austria-based engineering team
* 8+ years of professional software development experience, with proven depth on the backend
* Advanced proficiency in Node.js and NestJS for production backend services
* Real, hands-on experience with caching strategies, authentication/authorization, and application security
* Experience building data proxy layers or unifying multiple/disparate data sources into a single consistent API
* Solid experience with relational databases (PostgreSQL, MySQL) — data modeling and query optimization
* Hands-on AWS experience: S3, EC2, ECS, RDS, Route
53, Cloud Watch, Lambda
* Experience with Git Hub Actions and CI/CD pipeline management
* Comfortable being one of the first engineers on a brand-new platform team, where architecture, conventions, and process aren't fully defined yet Requirements (Nice-to-Haves)
* Frontend comfort with React and Next.js — you won't be leading frontend work, but you can pick it up when needed
* Experience with a headless or custom CMS (Contentful, Strapi, Sanity, or similar) — some custom CMS work is expected in this role
* Microservices architecture experience
* Docker and containerization experience
* GraphQL experience
* Experience working with distributed, cross-border engineering teams across time zones
* Infrastructure as Code experience (Terraform, Cloud Formation)
* Testing framework familiarity (Jest, Mocha, Cypress)
* Agile/Scrum experience in a fast-moving, still-forming team Bonus Points
* Experience in a  platform incubation  or 0-to-1 internal tooling context — building something from scratch that later spins out into its own team
* Prior consulting or agency background, comfortable working as an embedded contractor inside a client's internal team
* Contributions to open-source projects