Backend Developer - AI Data Services
Alignerr · New York, NY
- Hybrid
- Contract
- $80,000 / year
- New York, NY
Job highlights
- Build AI data infrastructure with C# expertise.
- Optimize data pipelines and annotation tooling.
- Work remotely on production AI systems.
- Collaborate with AI research and engineering teams.
- Shape next-generation AI model development.
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#
- Backend Development
- AI Data Services
- Data Pipelines
- Model Evaluation
- API Development
- Database Management
- Systems Programming
- Remote Work
- Contract Role
Skills & topics
- Backend Developer
- C#
- AI
- Data Services
- Data Pipelines
- Annotation Tooling
- Model Evaluation
- API Development
- Systems Programming
- Remote
How to get hired
- Tailor your resume: Highlight C# systems programming, AI data services, and API development experience.
- Showcase remote work skills: Emphasize asynchronous communication and self-direction in your application.
- Prepare for technical interviews: Be ready to discuss C# performance optimization and database interactions.
- Understand the AI impact: Articulate your interest in shaping AI model development through infrastructure.
- Network if possible: Connect with Alignerr employees on LinkedIn for insights into their culture.
Technical preparation
Master C# performance optimization techniques.,Practice SQL data modeling and ORM usage.,Build and document secure API endpoints.,Familiarize with AI/ML workflow concepts.
Behavioral questions
Describe a challenging system bottleneck you solved.,How do you ensure code quality in a remote team?,Explain your approach to asynchronous collaboration.,How do you prioritize tasks with flexible hours?
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 and structure your hours around your schedule, within the 20-40 hours per week commitment.
- What programming language is primarily used for the Backend Developer AI Data Services position at Alignerr?
- The primary programming language for this Backend Developer AI Data Services role at Alignerr is C#. The job description emphasizes a strong foundation in C# for building and optimizing systems.
- What kind of projects will I work on as a Backend Developer AI Data Services at Alignerr?
- As a Backend Developer AI Data Services at Alignerr, you will work on real production systems, building and optimizing data pipelines, annotation tooling, and evaluation systems for leading AI labs to train and improve their models.
- Is this a full-time or part-time role for the Backend Developer AI Data Services at Alignerr?
- This is an hourly contract role at Alignerr, with a commitment of 20-40 hours per week. While not a traditional full-time employee position, it offers substantial work and the potential for ongoing engagement.
- What are the key qualifications for the Backend Developer AI Data Services role at Alignerr?
- Key qualifications for the Backend Developer AI Data Services role at Alignerr include 5+ years of professional C# experience, a strong systems programming foundation, experience with data modeling and database access, and the ability to build secure APIs. Native or fluent English is also required.
- Does Alignerr offer benefits for contract roles like the Backend Developer AI Data Services position?
- As this is an hourly contract role, Alignerr typically does not offer traditional employee benefits. However, the role provides freelance autonomy, flexible hours, and the opportunity for ongoing work and contract extensions.