Senior Software Engineer - AI Trainer

AfterQuery; Port Reading (NJ); On-site; USD 120,000 - 160,000; Full time

Job summary

AfterQuery is a research lab focused on AI data for training and evaluation. We’re seeking a Full Stack Engineer to build production-quality applications across domains, contributing to data-driven AI models.

You will develop end-to-end applications using Next.js, Redis, and SQL databases, including dashboards, management systems, and real-time features. This role demands strong full-stack design, performance focus, and collaboration within a small team.

Qualifications

• 5+ years of software engineering experience.
• Experience in building full stack applications.
• Ability to design robust backend APIs and data models.
• Experience with real-time data handling and performance optimization.
• Proficiency with Next.js, Redis, and SQL databases.
• Familiarity with Tailwind CSS for UI development.

Responsibilities

• Design and develop complete, production-quality applications from scratch across various domains using Next.js, Redis, and SQL databases.
• Build dashboards, management systems, workflow tools, and data-driven platforms.
• Implement functionality including user authentication, data management, real-time features, reporting, and complex business logic.

Skills

5+ years software engineering

Full stack development

API design

Real-time features

Tools

Next.js

Redis

PostgreSQL

MySQL

Tailwind CSS

Job description

AfterQuery empowers foundational AI labs, enterprises, and startups by providing high-quality human-generated datasets that are essential for fine-tuning more capable, refined, and reliable AI systems. We are on the forefront of creating the world's most complex data infrastructure to capture the useful data for our major clients. We have raised our most recent round from BoxGroup, YC and a group of strategic angels that will push us to be at the forefront of the industry.

We're seeking a Full Stack Engineer to build diverse, production-quality applications that will serve as training examples for AI models. You'll create complete, functional end-to-end applications across various domains and use cases - each application you build becomes part of our AI training dataset. Your work will involve developing a wide range of software solutions that demonstrate different architectural patterns, features, and implementations.

Responsibilities

• Design and develop complete, production-quality applications from scratch across various business domains and use cases using Next.js, Redis, and SQL databases
• Build diverse application types including dashboards, management systems, workflow tools, and data-driven platforms that demonstrate different feature sets and architectural patterns
• Implement comprehensive functionality in each application including user authentication, data management, real-time features, reporting, and complex business logic

Required Qualifications

• Strong proficiency in Next.js for building modern, performant frontend applications with server-side rendering and API routes
• Experience with Redis for caching, session management, and real-time data handling to optimize application performance
• Solid experience designing and working with SQL databases (PostgreSQL, MySQL, or similar) including schema design, queries, relationships, and optimization
• Ability to architect full stack applications that effectively leverage Next.js, Redis, and SQL databases together in production environments
• Experience implementing efficient data flows between frontend, caching layer, and database to ensure responsive user experiences Retry
• Experience with Tailwind CSS for rapidly building responsive, custom user interfaces with utility-first styling
• 5+ years of experience as a software engineer

About AfterQuery

AfterQuery is a research lab investigating the boundaries of artificial intelligence through novel datasets and experimentation. We believe great AI comes from exceptional, human-generated data.

We're backed by top investors, including Y Combinator and Box Group, and support all leading AI labs.