Senior Machine Learning Expert (AI Training) About the Role What if your deep knowledge of machine learning could directly shape how the world's most advanced AI systems reason, plan, and make decisions?
Backend & Tooling Engineer (Rust)
Remote (Global)
$50 – $75/hr
July 14, 2026
Job description
Backend & Tooling Engineer (Rust) — AI Infrastructure
About the Role
What if your Rust expertise could directly shape the infrastructure powering the next generation of AI? We're looking for a Senior Rust Engineer to build the data pipelines, annotation tooling, and evaluation systems that leading AI labs depend on to train and benchmark their most advanced models.
This is high-impact, production-grade work — not toy projects or throwaway scripts. You'll be embedded in real engineering workflows, solving hard systems problems alongside data, research, and engineering teams at the frontier of AI development.
- Organization: Alignerr
- Type: Hourly Contract
- Location: Remote
- Commitment: 20–40 hours/week
What You'll Do
- Design, build, and optimize high-performance systems in Rust powering AI data pipelines and evaluation workflows
- Develop full-stack backend services and CLI tooling for large-scale data annotation, validation, and quality control
- Improve reliability, safety, and performance across production Rust codebases
- Collaborate with data, research, and engineering teams to support model training and evaluation workflows
- Identify bottlenecks and edge cases in data and system behavior — then implement scalable, well-reasoned fixes
- Participate in synchronous design and code reviews to iterate on architecture and implementation decisions
Who You Are
- Native or fluent English speaker with strong written and verbal communication skills
- 5+ years of professional experience writing production Rust — you know the language deeply, not just the basics
- Proven track record building high-performance backend web services and robust, user-friendly CLI tools
- Experienced with type-safe database interactions and connection pooling for large-scale data workloads
- Able to commit 20–40 hours per week with reliability and focus
- Self-directed and comfortable working asynchronously across a remote team
Nice to Have
- Prior experience with data annotation, data quality pipelines, or model evaluation systems
- Familiarity with AI/ML workflows, model training, or benchmarking infrastructure
- Background in distributed systems or developer tooling
- Experience contributing to or maintaining open-source Rust projects
Why Join Us
- Work on real production systems at the cutting edge of AI development
- Collaborate directly with leading AI research labs on high-stakes infrastructure
- Fully remote and async-friendly — work from wherever you do your best work
- Freelance autonomy with meaningful, technically challenging work
- Potential for ongoing engagement and expanded scope as projects evolve
Compensation by region
Pay varies by where you're based. Each region below is open to applicants in that country only.
Available in 2 regions: pick your country on click.
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