Backend Developer - AI Data Services
Backend Developer — AI Data Services About The Role What if your C# expertise could directly shape the infrastructure powering the world's most advanced AI systems? We're looking for a seasoned C# engineer to design and build the data pipelines, annotation tooling, and evaluation systems that leading AI labs depend on to train and improve next-generation models. This is a fully remote contract role with meaningful, high-impact work on real production systems — not toy projects. If you thrive on complex engineering challenges and want your work to matter at scale, this is the opportunity.
- Organization: Alignerr
- Type: Hourly Contract
- Location: Remote
- Commitment: 20–40 hours/week
What You'll Do
- Design, build, and optimize high-performance C# systems that support AI data pipelines and model 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 closely with data, research, and engineering teams to support model training and evaluation pipelines
- Identify bottlenecks and edge cases in data and system behavior — then implement scalable, production-ready fixes
- Participate in synchronous design reviews to iterate on architecture and implementation decisions
Who You Are
- Native or fluent English speaker with clear written and verbal communication skills
- Full-stack developer with a strong systems programming background
- 5+ years of professional experience writing production-grade C#
- Strong skills in data modeling and database access — ORMs, micro-ORMs, and high-performance SQL
- Experienced building secure, well-documented endpoints for data access and manipulation
- Able to commit 20–40 hours per week consistently
Nice to Have
- Prior experience with data annotation, data quality systems, or evaluation pipelines
- Familiarity with AI/ML workflows, model training, or benchmarking infrastructure
- Experience with distributed systems or developer tooling at scale
Why Join Us
- Work directly with leading AI research labs on systems that influence next-generation model development
- Fully remote — work from wherever you do your best work
- Flexible contract engagement with a consistent, meaningful workload
- Collaborate with a sharp, mission-driven team across data, research, and engineering
- Potential for ongoing work and expanded scope as projects grow