Backend Developer - AI Data Services
Alignerr · New York, NY
- Hybrid
- Contract
- $80,000 / year
- New York, NY
Job highlights
- Build AI data pipelines and annotation tooling.
- Optimize C# systems for AI model training.
- Develop backend services for data annotation.
- Collaborate with AI research and engineering teams.
- Fully remote contract role with flexible hours.
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
- Backend Development
- C#
- AI Data Services
- Data Pipelines
- Model Evaluation
- Annotation Tooling
- Systems Programming
- API Development
- Database Access
- Remote Work
Skills & topics
- Backend Developer
- C#
- AI
- Data Services
- Data Pipelines
- Annotation Tooling
- Model Evaluation
- Systems Programming
- API Development
- Remote Work
- Contract Role
- Freelance
- Software Engineer
- Developer
How to get hired
- Tailor your resume: Highlight your 5+ years of C# experience, systems programming, and API development.
- Showcase AI/ML familiarity: Emphasize any experience with data annotation, model training, or evaluation systems.
- Demonstrate remote readiness: Mention your ability to work asynchronously and communicate effectively in a remote setting.
- Prepare for technical questions: Be ready to discuss C# performance optimization and database interactions.
Technical preparation
Master C# performance tuning.,Practice SQL with ORMs.,Build mock APIs for data access.,Review system design principles.
Behavioral questions
Describe a complex C# problem solved.,How do you handle asynchronous work?,Explain your API design process.,Share an experience improving system reliability.
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, allowing you to structure your work around your schedule and collaborate from anywhere.
- What specific technologies are most important for this Backend Developer role?
- The primary technology emphasized for this Backend Developer role is C#. Proficiency in data modeling, database access (including ORM frameworks), and API development is also crucial.
- How does Alignerr support remote work for this Backend Developer position?
- Alignerr fosters a remote-first environment, encouraging asynchronous work and clear communication. This Backend Developer role offers flexibility in scheduling for 20-40 hours per week.
- What kind of projects will a Backend Developer work on at Alignerr?
- As a Backend Developer at Alignerr, you will build and optimize data pipelines, annotation tooling, and evaluation systems that support the training and improvement of advanced AI models.
- Is this a contract or permanent position for the Backend Developer?
- This Backend Developer position is an hourly contract role with potential for ongoing work and extension, offering freelance autonomy.
- What are the expected hours for the Backend Developer - AI Data Services role?
- The commitment for the Backend Developer - AI Data Services role is between 20 to 40 hours per week on an ongoing basis.
- What distinguishes Alignerr's AI Data Services work from typical development projects?
- Alignerr's AI Data Services work focuses on real production systems that directly impact the development of next-generation AI models, offering technically challenging infrastructure problems.