C++ Developer - Internal Tooling & Optimization
Alignerr
About this role
The Senior C++ Full-Stack Engineer — AI Data & Infrastructure role focuses on building and optimizing production systems that support AI data pipelines and evaluation workflows for leading AI labs. The engineer will work across backend and tooling layers to enable large-scale data annotation, validation, and quality control. The position sits at the intersection of infrastructure, data, and research, helping improve the performance, reliability, and safety of AI-related systems. This is a contract, remote role with flexible hours between 20–40 per week.
Skills
About Alignerr
alignerr.comAlignerr is a platform that pays domain experts to train and improve AI by completing remote, flexible tasks on their own schedule. It connects thousands of subject-matter experts with AI teams via a web app to perform data labeling, annotation, evaluation, and other human-in-the-loop work. Experts earn money for contributing their knowledge while companies get higher-quality, domain-specific data and feedback to boost model performance. Alignerr is used to scale and streamline human-centered workflows for AI training and validation.
Recent company news
Business InsiderContractors training Meta's AI say they read intimate talks with its chatbot — and see data that identifies users
Aug 6, 2025
SiliconANGLEReport: Meta is developing chatbots that will send unsolicited messages to users
Jul 3, 2025
Business InsiderLeaked docs show how Meta is training its chatbots to message you first, remember your chats, and keep you talking
Jul 2, 2025
Built InGet Paid to Train AI: The New Side Hustle for Professionals
Nov 12, 2025
TechCrunchMeta has found another way to keep you engaged: Chatbots that message you first
Jul 3, 2025
About Alignerr
Headquarters
San Francisco, CA
Company Size
201-500 employees
Founded
2018
Industry
Technology
Glassdoor Rating
4.2 / 5
Leadership Team
Sarah Johnson
Chief Executive Officer
Michael Chen
Chief Technology Officer
Emily Williams
VP of Engineering
David Rodriguez
VP of Product
Jessica Thompson
Chief Financial Officer
Andrew Park
VP of Sales
Unlock Company Insights
View leadership team, funding history,
and employee contacts for Alignerr.
Salary
$125k – $171k
per year
More jobs at Alignerr
Similar Jobs
Senior Infrastructure Engineer (Backend/Data Performance)
Earth Species Project
Software Engineer, Internal Tools
xAI
Senior AI Infrastructure Engineer, AI Tooling - DGX Cloud
NVIDIA
Senior Software Technical Program Manager - Infra and Platform Tooling
Nuro
HumanSignal | Columbus, Ohio | Hybrid | Spring/Summer 2026
HumanSignal
AI Automation & Tooling Engineer
Cyberhaven