2 days ago

Senior C# Full-Stack Engineer, AI Data & Infrastructure

Alignerr

Hybrid
Contractor
$156,000
Hybrid

Job Overview

Job TitleSenior C# Full-Stack Engineer, AI Data & Infrastructure
Job TypeContractor
CategoryCommerce
Experience5 Years
DegreeMaster
Offered Salary$156,000
LocationHybrid

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Job Description

About Alignerr

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

This is a contract, remote position with a commitment of 20–40 hours/week. Compensation is competitive and 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.
  • 5+ years of professional experience building scalable backend services in C#.
  • Mastery of modern frameworks for building RESTful APIs and RPC services for inter-service communication.
  • Experience integrating with cloud-native data services and orchestrating workflows via message bus architectures.
  • 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.

Key skills/competency

  • C#
  • Full-Stack Development
  • Backend Services
  • AI Data Pipelines
  • RESTful APIs
  • RPC Services
  • Cloud-Native Services
  • Message Bus Architectures
  • Distributed Systems
  • Performance Optimization

Tags:

Senior C# Full-Stack Engineer
System Design
Data Pipeline
AI Evaluation
Full-Stack Development
Backend Services
Data Annotation
Quality Control
Performance Optimization
Workflow Orchestration
Problem Solving
C#
.NET
RESTful APIs
RPC Services
Cloud-Native
Message Bus
Distributed Systems
SQL Databases
Azure
Git

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How to Get Hired at Alignerr

  • Research Alignerr's mission: Study their focus on connecting experts with AI labs and improving next-generation models.
  • Tailor your resume: Highlight your 5+ years of C# backend and full-stack experience, emphasizing AI data platforms and distributed systems.
  • Showcase systems programming: Prepare to discuss your mastery of RESTful APIs, RPC services, and cloud-native data integration.
  • Demonstrate communication skills: Emphasize your ability to collaborate and clearly articulate technical solutions for complex AI workflows.
  • Prepare for technical screening: Brush up on C# system design, data pipeline optimization, and relevant AI/ML concepts for the Alignerr team.

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