Back to SearchSenior Full-Stack JavaScript Engineer
Remote in Argentina, & 4 others
JavaScript (Fullstack)& 5 others
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We are looking for a Senior Full-Stack Engineer to build and evolve production web systems with strong ownership across frontend and backend services. You will help shape technical design, improve reliability and performance, and collaborate across teams to deliver accessible experiences.
Responsibilities
- Design full-stack solutions that ship reliably to production
- Build TypeScript and React UI features with accessible patterns and solid state management
- Implement backend services using Kotlin on the JVM and shared platform libraries where appropriate
- Define and maintain service interfaces using gRPC/protobuf and REST endpoints
- Model and optimize data in DynamoDB and PostgreSQL to support product features
- Improve performance across browser runtime, service latency, and data access paths
- Ensure quality with unit, integration, and end-to-end tests and clear release criteria
- Operate effectively within AWS, containers, and CI/CD workflows to deliver changes safely
- Evaluate trade-offs for caching, queues, and eventual consistency in distributed systems
- Lead technical design discussions and drive cross-team alignment on architecture
- Troubleshoot production issues and implement pragmatic fixes and preventative measures
Requirements
- 3+ years full-stack web engineering experience shipping production systems
- Strong TypeScript experience with a modern component framework (React preferred)
- Strong JVM backend proficiency with Kotlin or Java, or TypeScript for shared platform libraries
- Strong API development skills with gRPC + protobuf, plus HTTP and REST
- Strong database skills with DynamoDB and PostgreSQL, including data modeling for product features
- Strong AWS experience working effectively in containerized and CI/CD environments as a consumer
- Strong testing discipline across unit, integration, and end-to-end testing
- Cross-team ownership and design leadership skills for driving technical decisions
- Strong collaboration and communication skills to align with stakeholders and partner teams
- English proficiency: B2 Upper-Intermediate
Nice to have
- Experience with cross-platform mobile frameworks such as React Native, Kotlin Multiplatform, Flutter, or Capacitor
- Knowledge of authentication and identity systems including OAuth/OIDC, SSO, and third-party providers
- Experience with OpenTelemetry and structured logging tools such as SigNoz
- Experience building design systems or shared component libraries
- Background in privacy- and accessibility-focused domains and standards such as FERPA, COPPA, or WCAG