Remote-First Senior TypeScript Fullstack Engineer | Security

Cryptonext Security; United States; Hybrid; USD 120,000 - 180,000; Full time

Job summary

CryptoNext Security is seeking an experienced software engineer to own features end-to-end in TypeScript, from backend Node.js services to a React SPA. You will design HTTP APIs, model PostgreSQL schemas, and build with Vite, TanStack, Tailwind, and shadcn/ui. Collaborate closely with Product and QA, write tests, and review code.

AI-assisted development is encouraged with thoughtful trade-offs. The role emphasizes secure coding practices, open API contracts, and a pragmatic approach to shipping

Qualifications

• Strong TypeScript across the stack with strict mode and shared types.
• Backend in Node.js with API design, auth, and observability.
• Experience with asynchronous processing and job queues.
• PostgreSQL schema design, indexing, and migrations.
• Strong React fundamentals and modern frontend tooling.
• Experience designing REST/OpenAPI based contracts.
• Solid testing—unit and integration, defensible testing scope.
• Familiarity with AI-assisted development and governance.

Responsibilities

• Own features end to end in TypeScript, from design to deployment.
• Design HTTP APIs consumed by typed RPC clients with OpenAPI specs.
• Model and query PostgreSQL, including migrations and performance.
• Build interfaces with Vite, TanStack, Tailwind and shadcn/ui.
• Collaborate with Product and QA; review code and ensure quality.
• Write tests and enable QA to automate verification.
• Propose upgrades and refactors with documented trade-offs.
• Use AI coding tools responsibly and explain choices.

Skills

TypeScript across stack

Node.js backend

Asynchronous processing

PostgreSQL

React

Frontend toolchain

API design

Unit/integration testing

AI-assisted development

Senior decision making

Tools

Go

Hono

Vite

TanStack

Tailwind

shadcn/ui

Job description

CryptoNext Security is seeking an experienced software engineer to own features end-to-end in TypeScript, from backend Node.js services to a React SPA. You will design HTTP APIs, model PostgreSQL schemas, and build with Vite, TanStack, Tailwind, and shadcn/ui. Collaborate closely with Product and QA, write tests, and review code.

AI-assisted development is encouraged with thoughtful trade-offs. The role emphasizes secure coding practices, open API contracts, and a pragmatic approach to shipping