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Senior Backend Engineer (C#) - AI Data Platform
Alignerr
Denver, CO
Position Overview Senior Backend Engineer (C#) --- AI Data Platform About The Role What if your C# expertise could directly shape the inf...
$50.00 – $75.00/hr Apply Now
Senior C Full-Stack Engineer — AI Data & Infrastructure
Alignerr
Denver, CO
About The Role What if your systems programming expertise could directly shape the infrastructure powering the world's most advanced AI mode...
$50.00 – $75.00/hr Apply Now
Backend Developer - AI Data Services
Alignerr
Denver, CO
Position Overview Fully remote contract role with Alignerr for a seasoned C# engineer to work on high-impact AI data services. Job Overvie...
$50.00 – $75.00/hr Apply Now
Data Science Expert - AI Content Specialist
Alignerr
Denver, CO
Position Overview Fully remote, flexible contract role for experienced data scientists to work with leading AI research labs at Alignerr. ...
$40.00 – $80.00/hr Apply Now
Data Infrastructure Developer (C++)
Alignerr
Denver, CO
About The Role What if your deep C++ expertise could directly shape the infrastructure that powers the world's most advanced AI systems? We'...
$50.00 – $75.00/hr Apply Now
Part-Time Outlet Associate - Kearney Outlet
Goodwill Industries
Denver, Colorado
\*Please Note: This position will be posted through Monday, April 6th, 2026\*Please Note: Excellent customer service skills are a must! Our De...
$19.29 – $19.29/hr Apply Now
Sales Representative (Entry Level)
Atlas Consulting Group, Inc
Denver, CO
At Atlas, we are committed to promoting a positive and productive work culture that attracts top business professionals. Our dedication to thi...
$55k – $85k/year Apply Now
Intern - Procurement Analyst (Remote: USA)
Cologix, Inc.
Denver, CO
About Our Company: Headquartered in Denver, Colorado, Cologix is a leading North America network-neutral interconnection and hyperscale ed...
$23.00 – $23.00/hr Apply Now
Energy Analyst Intern
Guzman Energy
Denver, CO
**Energy Analyst Intern** ***Guzman Energy \| Denver, CO \| Paid Internship, In-Person*** **About Guzman Energy** Guzman Energy is a Denver...
$21.00 – $25.00/hr Apply Now
Recruiting Coordinator
Spekit 🐙
Denver, CO
**About Spekit** At Spekit, we're building a truly context-aware experience where you never have to *search* for the right answer again. It st...
$65k – $80k/year Apply Now
Senior Backend Engineer (C#) - AI Data Platform

Position Overview Senior Backend Engineer (C#) --- AI Data Platform About The Role What if your C# expertise could directly shape the infrastructure powering the next generation of AI?...

$50.00 – $75.00/hr Apply Now

Position Overview
  • Senior Backend Engineer (C#) --- AI Data Platform
About The Role
  • What if your C# expertise could directly shape the infrastructure powering the next generation of AI? We're looking for a Senior Backend Engineer to design and build the data pipelines, annotation tooling, and evaluation systems that leading AI labs depend on to train and improve their most advanced models.
  • This is a fully remote, flexible contract role for a seasoned engineer who thrives on solving hard systems problems and wants their work to matter at scale.
  • Organization: Alignerr
  • Type: Hourly Contract
  • Location: Remote
  • Commitment: 20--40 hours/week
What You'll Do
  • Design, build, and optimize high-performance C# systems supporting large-scale AI data pipelines and evaluation workflows
  • Develop backend services and tooling for data annotation, validation, and quality control at scale
  • Improve the reliability, performance, and safety of existing C# codebases
  • Collaborate with data, research, and engineering teams to accelerate model training and evaluation
  • Identify and resolve bottlenecks and edge cases across data and system behavior
  • Participate in synchronous design reviews and iterate rapidly on architecture and implementation decisions
Who You Are
  • 5+ years of professional experience building scalable backend services in C#
  • Strong systems programming background with full-stack development experience
  • Deep expertise in modern frameworks for RESTful APIs and RPC services
  • Experienced with cloud-native data services and message bus architectures for workflow orchestration
  • Native or fluent English speaker with clear written and verbal communication skills
  • Self-directed and reliable --- able to commit 20--40 hours per week and deliver independently
Nice to Have
  • Prior experience with data annotation platforms, data quality pipelines, or evaluation systems
  • Familiarity with AI/ML workflows, model training pipelines, or benchmarking infrastructure
  • Experience with distributed systems design or developer tooling
  • Background working directly with or alongside AI research teams
Why Join Us
  • Work on real production systems used by leading AI research labs --- not toy projects
  • Fully remote and asynchronous-friendly --- work from wherever you do your best work
  • Flexible contract structure with meaningful, high-impact technical work
  • Collaborate with top engineers and researchers pushing the boundaries of AI
  • Potential for ongoing contract extensions as projects grow and new initiatives launch
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