Backend Developer - AI Data Services
Alignerr · New York, NY
- Hybrid
- Contract
- $60,000 / year
- New York, NY
Job highlights
- Build AI data infrastructure using C#.
- Optimize data pipelines and evaluation systems.
- Develop full-stack tooling for data annotation.
- Collaborate with AI research teams remotely.
- This is a remote contract role.
About the role
Backend Developer - AI Data Services
About The Role
What if your C# expertise could directly shape the infrastructure powering next-generation AI? We're looking for a seasoned C# engineer to build and optimize the data pipelines, annotation tooling, and evaluation systems that leading AI labs depend on to train and improve their models.
This is a fully remote contract role working on real production systems — not toy projects. You'll collaborate with data, research, and engineering teams at the frontier of AI development, solving hard infrastructure problems that have a direct impact on how the world's most advanced models are built.
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 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 correctness across existing C# codebases
- Collaborate closely with data, research, and engineering teams to accelerate model training and evaluation workflows
- 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 foundation and 5+ years of professional C# experience
- Skilled in data modeling and database access — including ORM frameworks and micro-ORMs for high-performance SQL interactions
- Experienced building secure, well-documented APIs and endpoints for data access and manipulation
- Able to commit reliably to 20–40 hours per week on an ongoing basis
- Self-directed and comfortable working asynchronously across a remote-first environment
Nice to Have
- Prior experience with data annotation platforms, data quality systems, or model evaluation pipelines
- Familiarity with AI/ML workflows, model training infrastructure, or benchmarking systems
- Experience with distributed systems, developer tooling, or high-throughput data processing
Why Join Us
- Work directly with leading AI research labs on production systems that matter
- Fully remote and flexible — structure your work around your schedule
- Freelance autonomy with the substance of meaningful, technically challenging work
- Contribute to infrastructure that shapes how next-generation AI models are built and evaluated
- Potential for ongoing work and contract extension as projects grow and evolve
Key skills/competency
- C# Development
- AI Data Services
- Backend Systems
- Data Pipelines
- Model Evaluation
- API Development
- Database Management
- Remote Work
- Full-Stack Tooling
- Systems Programming
Skills & topics
- Backend Developer
- C#
- AI
- Data Services
- Data Pipelines
- Model Evaluation
- Remote
- Contract
- Developer
- Software Engineer
How to get hired
- Tailor your resume: Highlight your C# expertise, system programming, and API development experience for this Backend Developer role.
- Showcase AI relevance: Emphasize any experience with data pipelines, model evaluation, or AI/ML workflows.
- Demonstrate remote readiness: Detail your ability to work asynchronously and communicate effectively in a remote setting.
- Prepare for technical interviews: Be ready to discuss C# system design, database interactions, and production challenges.
Technical preparation
Master C# and .NET for backend systems.,Practice SQL with ORM and micro-ORM frameworks.,Build secure, documented APIs and endpoints.,Understand distributed systems concepts.
Behavioral questions
Describe a challenging infrastructure problem solved.,How do you manage asynchronous communication?,How do you collaborate with research teams?,How do you ensure data quality and correctness?
Frequently asked questions
- What is the work arrangement for the Backend Developer - AI Data Services role at Alignerr?
- The Backend Developer - AI Data Services role at Alignerr is a fully remote contract position. This means you can work from anywhere, offering flexibility in structuring your work schedule.
- What are the primary responsibilities of a Backend Developer in AI Data Services at Alignerr?
- As a Backend Developer in AI Data Services at Alignerr, you will design, build, and optimize C# systems for AI data pipelines, annotation tooling, and model evaluation. You'll develop backend services and improve existing codebases to support AI model training.
- What level of experience is required for the Backend Developer - AI Data Services role?
- Alignerr is seeking a seasoned engineer with a strong systems programming foundation and at least 5 years of professional C# experience. Experience with data modeling, database access, and secure API development is also essential.
- Is this a full-time or part-time position at Alignerr?
- This is an hourly contract role at Alignerr, with a commitment requirement of 20–40 hours per week. This offers a flexible arrangement that can accommodate various schedules.
- What kind of projects can I expect to work on as a Backend Developer at Alignerr?
- You will work on real production systems that power next-generation AI development. This includes building and optimizing infrastructure for leading AI labs, focusing on data pipelines, annotation tools, and model evaluation.
- What are the 'nice to have' skills for the Backend Developer - AI Data Services role?
- Nice-to-have skills include prior experience with data annotation platforms, data quality systems, model evaluation pipelines, AI/ML workflows, model training infrastructure, distributed systems, developer tooling, or high-throughput data processing.
- How does Alignerr support remote work for their Backend Developer positions?
- Alignerr operates as a remote-first environment. They emphasize asynchronous communication and provide the flexibility for developers to structure their work around their schedules, making it ideal for self-directed individuals.