Remote Senior Full-Stack Engineer - Flexible Hours

Appsierra Group; American Samoa; On-site; USD 104,000 - 208,000; Full time

Job summary

Appsierra Group is seeking a Senior Full-Stack Software Engineer for a highly experienced contract role. You will work across front-end and back-end systems on an AI training project, translating builds between languages and reviewing AI-generated code.

Responsibilities include building UI components, APIs, data models, and ensuring cross-layer integration. Strong problem-solving across systems is essential, with flexible remote scheduling.

Qualifications

• Strong professional experience building and maintaining production full-stack applications.
• Hands-on experience across both front-end and back-end engineering.
• Production experience with multiple programming languages.
• Strong knowledge of browser-based applications, APIs, state, databases, and service integrations.
• Ability to understand and contribute to the architecture of complete software systems.
• Experience working effectively within unfamiliar codebases and repositories.
• Strong debugging, analytical, and technical problem-solving skills.
• Ability to assess code quality across correctness, performance, security, and maintainability.
• Comfortable working independently in a flexible, remote environment.

Responsibilities

• Develop, modify, and debug front-end and back-end application components.
• Build and improve user-facing features along with the APIs, services, and data models that support them.
• Trace requests and data across browsers, front-end applications, APIs, services, databases, and external integrations.
• Navigate unfamiliar repositories and understand existing application architecture and implementation patterns.
• Diagnose issues involving application state, API contracts, authentication, persistence, networking, and deployment.
• Develop, review, and improve software across multiple programming languages.
• Translate complete coding implementations between programming languages while preserving functionality and behavior.
• Review AI-generated code and solutions for correctness, completeness, performance, security, and maintainability.
• Solve technically challenging software-engineering problems across different application layers.

Skills

Python

JavaScript

TypeScript

React

Node.js

Java

Rust

Go

Job description

Appsierra Group is seeking a Senior Full-Stack Software Engineer for a highly experienced contract role. You will work across front-end and back-end systems on an AI training project, translating builds between languages and reviewing AI-generated code.

Responsibilities include building UI components, APIs, data models, and ensuring cross-layer integration. Strong problem-solving across systems is essential, with flexible remote scheduling.