Machine Learning Engineer – RAG & Fine-Tuning

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Job Description

Machine Learning Engineer – RAG & Fine-Tuning

This role requires working from our local Hyderabad office 2-3x a week.
Location: Hyderabad, Telangana, India

ABOUT ABC FITNESS

ABC Fitness (ABC) is the global market leader in providing technology solutions to the fitness industry. Built on a 40+ year reputation of excellence, ABC helps fitness providers of all sizes and backgrounds to turn their visions into seamless reality. Founded in 1981, ABC serves 40 million+ members globally, processing over $11B+ in payments annually for 31,000 clubs across 92+ countries. Our integrated suite includes best-of-breed platforms: Evo, Glofox, Ignite, and Trainerize.
As a Thoma Bravo portfolio company, ABC is backed by the leading private equity firm focused on enterprise software. Learn more at abcfitness.com.

ABOUT THE TEAM

The AI Platform Engineering team at ABC builds scalable, high-performance AI systems that power next-generation fitness technology. We specialize in retrieval-augmented generation (RAG) architectures and fine-tuning methodologies to deliver context-aware, cost-efficient AI solutions. As our Machine Learning Engineer, you will be responsible for all retrieval and intelligence behind the LLM, delivering performant, low-cost, high-context AI features.

At ABC, we love entrepreneurs because we are entrepreneurs. We roll our sleeves up, we act fast, and we learn together.

WHAT YOU’LL DO

• Handle embeddings and chunking strategies to optimize document and data retrieval for GenAI-powered features.
• Manage vector stores and retrieval workflows using leading vector databases (Pinecone, FAISS, Weaviate, Azure AI Search) to ensure efficient, scalable access to unstructured and structured data.
• Fine-tune small and large language models using frameworks such as HuggingFace and OpenAI APIs, tailoring models to domain-specific requirements and improving performance on targeted tasks.
• Optimize cost and reduce latency by implementing best practices for token management, model evaluation, and cloud resource utilization.
• Collaborate with engineering, product, and data teams to integrate RAG pipelines into production systems, ensuring reliability, scalability, and security.
• Stay up-to-date with the latest advancements in retrieval-augmented generation, vector search, and LLM fine-tuning, applying new techniques to improve system performance and user experience.

WHAT YOU’LL NEED

• 4–7 years of experience in machine learning or AI engineering, with a proven track record in RAG, vector search, and LLM fine-tuning.
• Deep expertise with vector databases such as Pinecone, FAISS, Weaviate, or Azure AI Search, including experience designing retrieval workflows and managing embeddings.
• Familiarity with HuggingFace and OpenAI fine-tuning APIs, and strong understanding of chunking strategies for optimizing retrieval.
• Proficiency in Python and experience with ML frameworks (PyTorch, TensorFlow) and cloud platforms (AWS, Azure).
• Understanding of token management, evaluation tuning, and cost optimization for large-scale AI deployments.
• Strong problem-solving skills, a collaborative mindset, and the ability to communicate complex technical concepts to both technical and non-technical stakeholders.

AND IT’S GREAT TO HAVE

• Experience with NLP, NLU, and NLG techniques for conversational AI or information retrieval.
• Exposure to ML Ops tools for model monitoring, evaluation, and deployment (ML flow, Weights & Biases).
• Experience with model compression, quantization, or other efficiency techniques.
• Certifications in AWS Machine Learning Specialty or Microsoft AI Engineer.

WHAT’S IN IT FOR YOU:  

• Purpose led company with a Values focused culture – Best Life, One Team, Growth Mindset 

• Time Off – competitive PTO plans with 15 Earned accrued leave, 12 days Sick leave, and 12 days Casual leave per year 

• 11 Holidays plus 4 Days of Disconnect – once a quarter, we take a collective breather and enjoy a day off together around the globe. #oneteam 

• Group Mediclaim insurance coverage of INR 500,000 for employee + spouse, 2 kids, and parents or parent-in-laws, and including EAP counseling 

• Life Insurance and Personal Accident Insurance 

• Best Life Perk – we are committed to meeting you wherever you are in your fitness journey with a quarterly reimbursement 

• Premium Calm App – enjoy tranquility with a Calm App subscription for you and up to 4 dependents over the age of 16 

• Support for working women with financial aid towards crèche facility, ensuring a safe and nurturing environment for their little ones while they focus on their careers. 

We’re committed to diversity and passion, and encourage you to apply, even if you don’t demonstrate all the listed skillsets! 

ABC’S COMMITMENT TO DIVERSITY, EQUALITY, BELONGING AND INCLUSION: 
ABC is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.  We are intentional about creating an environment where employees, our clients and other stakeholders feel valued and inspired to reach their full potential and make authentic connections. We foster a workplace culture that embraces each person’s diversity, including the extent to which they are similar or different. ABC leaders believe that an equitable and inclusive culture is not only the right thing to do, it is a business imperative. Read more about our commitment to diversity, equality, belonging and inclusion at abcfitness.com  

ABOUT ABC: 

ABC Fitness (abcfitness.com) is the premier provider of software and related services for the fitness industry and has built a reputation for excellence in support for clubs and their members. ABC is the trusted provider to boost performance and create a total fitness experience for over 41 million members of clubs of all sizes whether a multi-location chain, franchise or an independent gym. 

 
Founded in 1981, ABC helps over 31,000 gyms and health clubs globally perform better and more profitably offering a comprehensive SaaS club management solution that enables club operators to achieve optimal performance. ABC Fitness is a Thoma Bravo portfolio company, a private equity firm focused on investing in software and technology companies (thomabravo.com). 

#LI-HYBRID 

If you like wild growth and working with happy, enthusiastic over-achievers, you'll enjoy your career with us!