Onsite | Full Stack Software Engineer — $45–$60/hour

24-Mag Llc; New York, Northern (NY, KY); Hybrid; USD 62,000 - 83,000; Full time

Job summary

24-MAG LLC is offering a full-time consulting opportunity for experienced full-stack software engineers. You will build and ship production-grade software across backend, frontend, databases, and cloud environments, and integrate frontier AI model APIs with real-world applications.

The role focuses on rapid prototyping, debugging, and delivering working code for evolving requirements, with a Tuesday-Friday cadence and approximately 40 hours per week.

Qualifications

• 3+ years of professional software engineering experience
• Hands-on production software experience
• Experience building backend services and APIs
• Frontend experience with React or another modern framework
• Cloud deployment/production environments familiarity

Responsibilities

• Build and ship full-stack applications, backend services, APIs, and internal tools
• Integrate pre-release AI model APIs into working software
• Develop telemetry and instrumentation for observing model and system behavior
• Prototype solutions quickly as requirements evolve
• Collaborate on architecture and delivery with engineering leadership

Skills

Full-stack development

Production software engineering

Frontend framework (React)

Backend services & APIs

Education

Bachelor's degree in computer science or related

Tools

Python

Java

Rust

C#

C++

TypeScript

React

Job description

We are sharing a specialised full-time consulting opportunity for experienced full-stack software engineers with hands-on production experience building and shipping modern applications across backend, frontend, database, and cloud environments.

This role supports an advanced generative AI initiative focused on building, integrating, and stress-testing real software using frontier AI models. Selected engineers will develop production-quality applications and internal tools, integrate pre-release model APIs, investigate model and integration failures, and contribute working code quickly across evolving technical requirements.

Key Responsibilities

Full-Stack Software Development

• Build and ship full-stack applications, backend services, APIs, and internal engineering tools
• Develop production software using Python, Java, Rust, C#, C++, TypeScript, or related technologies
• Work across backend services, frontend applications, databases, and cloud environments
• Develop maintainable, production-quality software for realistic application workflows
• Contribute to architecture, implementation, testing, and deployment

AI Model & API Integration

• Integrate pre-release AI model APIs into working software
• Build supporting tool interfaces, application scaffolding, and evaluation harnesses
• Develop telemetry and instrumentation for observing model and system behaviour
• Test frontier model capabilities through realistic end-to-end applications
• Identify technical limitations and integration issues during development

Engineering Analysis & Debugging

• Diagnose model, application, and integration failure modes
• Investigate unexpected system behaviour and implementation problems
• Document reproducible technical issues clearly
• Translate engineering observations into actionable written feedback
• Support research and engineering teams with technically precise findings

Rapid Prototyping & Delivery

• Prototype solutions quickly as requirements evolve
• Onboard onto unfamiliar codebases and contribute working code with minimal ramp-up
• Deliver functional increments with limited up-front specification
• Collaborate with engineers and technical leadership on architecture and implementation decisions
• Maintain consistent standards for code quality and technical documentation

Ideal Profile

Strong candidates may have:

• At least 3 years of dedicated professional software engineering experience
• Hands-on experience building and shipping production software
• Production expertise in at least one of Python, Java, Rust, C#, or C++
• Working proficiency in a second programming language or technical ecosystem
• Experience developing backend services and APIs
• Hands-on experience with React or another modern frontend framework
• Experience with relational or document databases
• Familiarity with cloud deployment and production environments
• Ability to learn unfamiliar codebases and deliver working software quickly
• Demonstrable professional progression
• Strong written communication and technical reasoning skills
• Reliable weekday availability for approximately 40 hours per week

Educational Background

• A degree in computer science, software engineering, computer engineering, or a related technical discipline may be helpful
• Advanced technical education may strengthen an application
• Equivalent professional software engineering experience may also be considered
• Hands-on production engineering experience is particularly important for this engagement

Nice to Have

• Professional experience across multiple programming-language ecosystems
• Strong Python, Java, Rust, C#, C++, or TypeScript experience
• Experience building AI-powered applications
• Familiarity with LLM or foundation-model APIs
• Experience developing evaluation harnesses or engineering tooling
• Background building internal developer tools or platforms
• Experience with cloud infrastructure and production operations
• Familiarity with observability, telemetry, and system instrumentation
• Experience working in fast-moving technology or research environments

Why This Opportunity

• Build production-quality software around frontier AI systems
• Work across backend, frontend, databases, cloud, and model-integration workflows
• Test advanced AI capabilities through realistic software applications
• Identify technical limitations and integration failures before broader deployment
• Collaborate with experienced engineering and research teams
• Develop working software across multiple modern technology stacks
• Contribute full-time to technically demanding, rapidly evolving projects

Contract Details

• Full-time W-2 contingent employment opportunity
• Expected commitment of approximately 40 hours per week during weekdays
• Competitive rates between $45–$60 per hour depending on experience and project scope
• Work may include full-stack application development, API integration, AI model testing, debugging, engineering tooling, and technical documentation
• Candidates should have production experience in at least one of Python, Java, Rust, C#, or C++, together with working proficiency in a second technical ecosystem
• Projects and responsibilities may evolve according to research and engineering requirements

About the Platform

This opportunity is available through 24-MAG LLC. We connect experienced professionals with remote consulting opportunities across technical, evaluation, and project-based workstreams.

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