Senior Fullstack Engineer (TS/Node, Effect.js) — Remote

Appfire; United States; Remote; USD 140,000 - 190,000; Full time

Benefits offered by this job

Equity program

26 vacation days

Wellness days

Volunteer time

Learning platform

Health insurance

Home office allowance

Job summary

Appfire is seeking a strong software engineer to join the Astroneers team, focusing on JMWE/JMCF products. You will design, build, and maintain scalable apps in Node.js and TypeScript, collaborate across disciplines, and push performance and UX improvements. Remote-friendly, fast-paced, and highly collaborative environment.

You will help shape product decisions, mentor teammates, and explore AI capabilities while delivering high-quality software used by thousands of customers worldwide.

Qualifications

• 5+ years delivering scalable cloud applications.
• Proficient in full-stack JavaScript/TypeScript with Node.js backend.

Responsibilities

• Join a cross-functional product team and collaborate with engineers, PMs, and support teams.
• Design, build, and maintain efficient, scalable applications in JS/TS.
• Automate cloud services and configuration management for scalability and cost optimization.
• Contribute to product discussions and advocate for customers and business needs.

Skills

Full-stack JavaScript/TypeScript

5+ years experience

AI models integration

Cloud architectures

Mentoring teammates

Performance & security

English: B2+

Tools

Effect.js

Express.js

Node.js

Cursor (AI tools)

Job description

Appfire is seeking a strong software engineer to join the Astroneers team, focusing on JMWE/JMCF products. You will design, build, and maintain scalable apps in Node.js and TypeScript, collaborate across disciplines, and push performance and UX improvements. Remote-friendly, fast-paced, and highly collaborative environment.

You will help shape product decisions, mentor teammates, and explore AI capabilities while delivering high-quality software used by thousands of customers worldwide.