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Beta — Launching December 2025

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Senior Staff AI Engineer

Rascal Ventures•Tring, England, United Kingdom(Remote)

EngineeringSeniorPosted 9 Dec 2025

Senior Staff AI Engineer at Rascal Ventures

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About This Role

Join Rascal Ventures, an early-stage funded tech startup, and become a founding AI Engineer. You will architect a system from scratch that combines computer vision, natural language processing, and semantic search to solve a real problem in the healthcare industry.

This role offers the chance to define what 'good' looks like and build the systems to measure it, with a strong emphasis on safety from day one. You'll not only be optimising models but designing how all the pieces interact, ensuring scalability and reliability.

This is a great opportunity to build a portfolio career in the tech industry.

Key Responsibilities

1Build the core AI system, encompassing architecture, model selection, inference optimisation, and deployment.
2Ensure AWS infrastructure is scalable and reliable.
3Collaborate with the CTO on safety frameworks and evaluation processes.
4Establish technical patterns for future AI engineers to follow.
5Assist in interviewing and onboarding new team members.
6Take ownership of the technical direction, with input from the CTO.
7Raise concerns about safety and data quality proactively.

8Mentor other team members to improve overall team quality.

Requirements

10+ years of experience shipping software, with 5+ years in production ML systems.
2+ years of experience at an early-stage startup.
Expert-level proficiency in Python.
5+ years of hands-on experience with AWS (SageMaker, Lambda, ECS).
Experience building computer vision systems (object detection, image classification).
Experience building retrieval systems with embeddings (Weaviate, Pinecone, Faiss).
Strong understanding of NLP and document understanding (parsing, OCR, transformers).
Solid grasp of MLOps fundamentals (Docker, CI/CD, model versioning, feature stores).

About Rascal Ventures

Rascal Ventures is an early-stage, funded tech startup focused on building impactful solutions within the healthcare industry. They are committed to responsible AI practices and building diverse teams.

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R

Rascal Ventures

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Skills Required

PythonAWSSageMakerLambdaECSComputer VisionObject DetectionImage ClassificationNLPDocument UnderstandingParsingOCRTransformersMLOpsDocker

Job Details

Department: Engineering
Seniority: Senior
Type: full-time
Location: Tring, England, United Kingdom

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