Applications Engineer at Key to Web3 in Austin, TX

Applications Engineer

We are hiring an Applications Engineer to help develop and optimize high-performance web and backend systems across compute infrastructure.

Key Responsibilities:

• Build and maintain web applications using TypeScript, React, and modern frameworks.
• Develop and maintain APIs using Fastify, tRPC, GraphQL, gRPC, and REST.
• Participate in architecture discussions and propose scalable, secure solutions.
• Write modular, testable code focused on long-term maintainability.
• Create and run test plans to ensure software quality.
• Monitor system performance and address bottlenecks.
• Document architecture, APIs, and internal processes.
• Contribute to feature development and iterative product improvements.
• Work cross-functionally with design, product, and engineering teams.
• Participate in Agile workflows (sprint planning, standups, retrospectives).

Key Requirements:

• Proficiency in TypeScript, NextJS, Fastify, tRPC, Drizzle, REST, and PostgreSQL.
• Experience building backend microservices with NodeJS.
• Solid understanding of API architecture and server-side development.
• Strong database skills with query optimization and performance tuning.
• 4+ years of experience in software engineering.
• Experience delivering production-scale systems.
• Bachelor's degree in computer science or related field—or equivalent experience.
• Familiarity with Agile development practices.
• Experience working in early-stage or scaling environments.
• Interest in building user-friendly and accessible interfaces.
• Ability to write clean, maintainable code and follow engineering best practices.
• Strong collaboration skills with cross-functional teams.
• Proactive in identifying technical and process improvements.