Sr. Full-stack Software Engineer

Artha Nexgen; Northern (KY); Hybrid; USD 55,000 - 124,000; Part time

Job summary

Artha Nexgen, a globally remote contractor opportunity, seeks a skilled Full-Stack Software Engineer to contribute to an AI training project. You will work across front-end and back-end development, tackle complex problems, and review code for correctness and performance.

The role requires hands-on experience across the full stack, with the ability to navigate unfamiliar repositories, understand existing architectures, and translate coding builds between languages.

Qualifications

• Hands-on experience with both front-end and back-end engineering.
• Production experience with multiple programming languages.
• Ability to understand and contribute to software system architecture.

Responsibilities

• Develop, modify, and debug front-end and back-end components.
• Implement user-facing features and supporting services, APIs, and data models.
• Navigate unfamiliar repositories and understand existing architecture.
• Diagnose failures related to state, API contracts, authentication, persistence, networking, and deployment.
• Evaluate and improve code across languages.
• Review AI-generated solutions for correctness, performance, security and maintainability.

Skills

Front-end and back-end engineering

Multiple programming languages

Software architecture understanding

Debugging and problem-solving

Job description

This job requires a minimum of 3 years of experience.

About the Job

Full-Stack Software Engineer

Location: Global, fully remote

Job Type: Contractor (~15 hours per week)

Schedule: Flexible—you choose the hours and days you work, including weekends if desired as long as there is activity.

We are looking for highly skilled Full-Stack Software Engineers to contribute to an AI training project involving software development, technical problem-solving, debugging, system architecture, and code evaluation.

The work involves creating, solving, reviewing, and validating challenging software-engineering tasks across front-end and back-end systems and helping with translating full coding builds from one particular language into another.

This role requires meaningful hands-on experience across both front-end and back-end engineering. Candidates should be comfortable working throughout the application stack rather than specializing exclusively in one layer.

What You’ll Work On

• Develop, modify, and debug front-end and back-end application components.
• Implement user-facing features and the services, APIs, and data models that support them.
• Work inside unfamiliar repositories and understand existing application architecture.
• Diagnose failures involving application state, API contracts, authentication, persistence, networking, and deployment.
• Evaluate and improve code written in multiple programming languages.
• Review AI-generated solutions for correctness, completeness, performance, security, and maintainability.

Required Qualifications

• Meaningful hands-on experience with both front-end and back-end engineering.
• Production experience with multiple programming languages.
• Experience understanding and contributing to the architecture of complete software systems.
• Ability to work effectively in unfamiliar codebases.
• Strong debugging and technical problem-solving skills.

Compensation Structure

Compensation is output-based. Experts are paid per task that meets the project specifications. The time required to complete each task may vary depending on the expert’s experience and workflow.

Minimum submission requirements apply. Experts must submit a minimum number of tasks per week.

Start Timeline & Availability

• We typically fill roles within 48 hours and are looking for experts who are ready to begin immediately. If selected, you will be expected to start your first tasks within 24–48 hours of completing onboarding.