Senior Full Stack Engineer (Remote-Worldwide)

Your Software Supplier; Amsterdam; Remote; EUR 61,000 - 123,000; Part time

Job summary

Micro1 is seeking highly skilled full‑stack software engineers for an AI training project. You will work across front‑end and back‑end components, build features, APIs, and data models, and translate code across languages in a fully remote, contractor role.

You will review AI-generated solutions for correctness, performance, and security while collaborating across unfamiliar codebases. Flexible hours, ~15 hours per week, worldwide.

Qualifications

• Proven track record building production full‑stack apps.
• Hands‑on across frontend and backend technologies.
• Experience with multiple programming languages in production.

Responsibilities

• Develop, modify, and debug front‑end and back‑end components.
• Implement user‑facing features and APIs and data models.
• Trace requests across browsers, apps, APIs, services, databases.
• Navigate unfamiliar repositories and learn existing architecture.
• Diagnose failures in state, contracts, auth, persistence, networking, deploy.
• Evaluate and improve code in several languages.
• Review AI-generated solutions for quality and security.

Skills

Full-stack development

Frontend & backend

Multi-language production

Browser APIs

Architecture understanding

Code debugging

Code review

Job description

This job is with our partner Micro1.

Tasks

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

1. Develop, modify, and debug front-end and back-end application components.
2. Implement user-facing features and the services, APIs, and data models that support them.
3. Trace requests and data across browsers, front-end applications, APIs, services, databases, and external integrations.
4. Work inside unfamiliar repositories and understand existing application architecture.
5. Diagnose failures involving application state, API contracts, authentication, persistence, networking, and deployment.
6. Evaluate and improve code written in multiple programming languages.
7. Review AI-generated solutions for correctness, completeness, performance, security, and maintainability.

Requirements

Required Qualifications

1. Strong professional experience developing production full-stack applications.
2. Meaningful hands-on experience with both front-end and back-end engineering.
3. Production experience with multiple programming languages.
4. Strong knowledge of browser applications, APIs, application state, databases, and service integration.
5. Experience understanding and contributing to the architecture of complete software systems.
6. Ability to work effectively in unfamiliar codebases.
7. Strong debugging and technical problem-solving skills.

Salarisomschrijving

USD 50-100 per hour

Type vacature:

Intern

Vaardigheden

• Er is geen minimale opleiding vereist
• Je beheerst Engels