Applications Engineer

Key To Web3

Texas remote Until 8/21/2026 4+ years exp First posted May 25, 2026 Last posted May 25, 2026

Job description

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.

About this role

Summary

Develop and optimize web/backend systems, APIs, and collaborate cross-functionally.

Job title

Applications Engineer

Experience level

4+ years

Minimum experience

4+ years exp

Industry

software

Location requirements

remote or on-site in Texas, flexible work arrangement.

Salary

Not specified

Management role

Skills & keywords

Required skills

TypeScriptReactFastifytRPCRESTPostgreSQLNodeJSAPI architecturemicroservicessoftware engineering

Preferred skills

NextJSDrizzleperformance tuningAgilescaling environments

Specializations

web applicationsbackend systemsAPI developmentmicroservicesdatabase

Locations

Structured locations inferred from the posting.

Unknown location

Remote

Unknown location

On-site