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Posted on 2026/01/08

Senior C++ Full-Stack Engineer — AI Data & Infrastructure

Alignerr

via Remote

Full-time

Full Description

About the Job

Alignerr connects top technical experts with leading AI labs to build, evaluate, and improve next-generation models.

We work on real production systems and high-impact research workflows across data, tooling, and infrastructure.

Position

Senior C++ Full-Stack Engineer — AI Data & Infrastructure

Type: Contract, Remote Commitment: 20–40 hours/week Compensation: Competitive, hourly (based on experience)

Role Responsibilities

• Design, build, and optimize high-performance systems in C++ supporting AI data pipelines and evaluation workflows

• Develop full-stack tooling and backend services for large-scale data annotation, validation, and quality control

• Improve reliability, performance, and safety across existing C++ codebases

• Collaborate with data, research, and engineering teams to support model training and evaluation workflows

• Identify bottlenecks and edge cases in data and system behavior, and implement scalable fixes

• Participate in synchronous reviews to iterate on system design and implementation decisions

Qualifications

Must-Have

• Native or fluent English speaker

• Full-stack developer experience with a strong systems programming background

• 3-5+ years of professional experience writing production C++ (with a focus on modern standards like C++17 or C++20).

• Strong systems programming background in performance optimization, concurrency (e.g., threading, atomics), and memory safety (e.g., RAII, smart pointers, sanitizers).

• Clear written and verbal communication skills

• Ability to commit 20–40 hours per week

Preferred

• Prior experience with data annotation, data quality, or evaluation systems

• Familiarity with AI/ML workflows, model training, or benchmarking pipelines

• Experience with distributed systems or developer tooling

Application Process

• Submit your resume

• Complete a short technical screening

• Project matching and onboarding

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