Software Engineer (C#) - Internal Tooling

up to $75/hr

source wording: “$50-75/hr”

Platform: Alignerr
Category: Coding & software eval
Eligibility: Worldwide
Freshness: seen live 57 min ago

What this role asks for

20–40 hrs/week
3+ yrs experience
Python
Annotation

Read from the posting's own words: show the exact sentences

20–40 hrs/week: “…Alignerr - Type: Hourly Contract - Location: Remote - Commitment: 20–40 hours/week What You'll Do * Design and build high-performance C# systems that support large-scale…”
3+ yrs experience: “…iterate on architecture and implementation decisions Who You Are * 3–5+ years of professional experience writing production-grade C# * Strong full-stack developer with a solid systems…”
Python: “…behavior * Implement interoperability solutions — such as invoking Python ML models from .NET or wrapping native libraries * Identify bottlenecks and edge cases,…”
Annotation: “…workflows * Develop full-stack tooling and backend services for data annotation, validation, and quality control at scale * Improve reliability, performance, and…”

The role, as Alignerr describes it

Software Engineer (C#) — Internal Tooling (AI Infrastructure)

About the Role

What if your C# expertise could directly shape the infrastructure powering the next generation of AI? We're looking for a senior full-stack C# engineer to build the data pipelines, annotation systems, and evaluation tooling that leading AI labs depend on every day.

This isn't toy work or proof-of-concept territory. You'll be writing production code that sits at the heart of real AI training and evaluation workflows — the kind of systems that determine how models learn, improve, and get measured.

- Organization: Alignerr - Type: Hourly Contract - Location: Remote - Commitment: 20–40 hours/week

What You'll Do

Read the rest of the description (7 more paragraphs)

* Design and build high-performance C# systems that support large-scale AI data pipelines and evaluation workflows * Develop full-stack tooling and backend services for data annotation, validation, and quality control at scale * Improve reliability, performance, and correctness across existing C# codebases * Build robust benchmarking and evaluation harnesses to measure system behavior * Implement interoperability solutions — such as invoking Python ML models from .NET or wrapping native libraries * Identify bottlenecks and edge cases, then ship scalable, well-reasoned fixes * Collaborate with data, research, and engineering teams across model training and evaluation workflows * Participate in synchronous design reviews to iterate on architecture and implementation decisions

Who You Are

* 3–5+ years of professional experience writing production-grade C# * Strong full-stack developer with a solid systems programming foundation * Experienced in interoperability scenarios — calling Python ML models from .NET, wrapping native libraries, bridging ecosystems * Proven track record designing benchmarking harnesses and performance evaluation systems * Clear, precise written and verbal communicator — you can explain technical decisions to mixed audiences * Native or fluent English speaker * Able to commit 20–40 hours per week consistently

Nice to Have

* Prior experience with data annotation platforms, data quality pipelines, or evaluation systems * Familiarity with AI/ML workflows, model training, or benchmarking infrastructure * Experience with distributed systems or developer tooling * Background working in fast-moving research or AI-adjacent engineering environments

Why Join Us

* Work on real production systems alongside top AI research labs — not toy demos * Fully remote and flexible — structure your hours around your best work * Freelance autonomy with the substance of meaningful, high-stakes engineering * Make a tangible impact on the infrastructure that shapes how next-generation AI models are built and evaluated * Potential for ongoing work and contract extension as projects grow

Posted by Alignerr, reproduced here so you can judge the role before clicking. Original posting ↗

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Source: platform job feed · first seen 57 min ago · ID 05113189-64f6-41b9-ab53-51a6bd968a8a

Software Engineer (C#) - Internal Tooling

The role, as Alignerr describes it

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