Senior AI Engineer - remote job

LottieFiles is hiring a Senior AI Engineer - a senior role, so the employer expects you to make the calls yourself. The role sits in IT and programming and is fully remote. The company places no restriction on where the candidate lives, so you can apply from anywhere.

The employer did not publish a figure; that is settled at interview. The advert sets no condition on working hours.

This vacancy passed an automated check: the list excludes any advert requiring a foreign work permit, visa sponsorship, a particular citizenship, or residence in a specific country.

A 2-3 sentence summary of the role: Develop and enhance AI systems that generate production-quality motion from natural language, focusing on improving existing systems and creating specialized models for higher quality and efficiency. This role involves hands-on engineering with end-to-end ownership and significant impact on product quality.

What you will do: - Design and implement improvements in prompt interpretation, model orchestration, and structured generation. - Diagnose and address recurring failure modes to enhance system durability. - Develop feedback loops and quality gates to ensure high-quality outputs. - Conduct experiments and evaluations to measure output quality improvements. - Design and fine-tune specialized models for direct Motion DSL generation. - Create high-quality training and evaluation datasets. - Build evaluation systems that ensure meaningful generalization tests.

What they are looking for: - Strong ML and software engineering background. - Practical experience with supervised fine-tuning and modern post-training workflows. - Strong evaluation skills to design effective experiments and regression suites. - Experience with structured or code generation, including DSLs and compilers. - Production engineering judgment to ensure system reliability and maintainability. - Product and visual judgment to distinguish polished output from technically valid but less refined results.

Terms: - Fully remote working environment. - Flexible work hours. - No specified pay, location, or hours. - Contract type not specified.