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Llm Developer Jobs in Massachusetts (NOW HIRING)

Sr. DevOps Engineer II

Boston, MA · On-site +1

$141K - $181K/yr

Build and maintain AI/ML infrastructure and monitoring for LLM-powered agentic services * Establish and enforce infrastructure-as-code standards using Terraform, defining the patterns other engineers ...

Sr. DevOps Engineer II

Boston, MA

$141K - $181K/yr

Build and maintain AI/ML infrastructure and monitoring for LLM-powered agentic services  ... Innovate on developer experience: reduce friction in testing environments, CI/CD pipelines, and ...

Sr. DevOps Engineer II

Boston, MA · On-site

$141K - $181K/yr

Build andmaintainAI/ML infrastructureand monitoring for LLM-powered agentic services * Establish and enforce infrastructure-as-code standards using Terraform, defining the patterns other engineers ...

Sr. AI Developer

Boston, MA · On-site

$59.25 - $78.25/hr

... common LLM orchestration frameworks (such as LangChain/LangGraph, Microsoft Agent Framework, or ... Strong software engineering fundamentals, including data structures, system design, and testing ...

Sr. AI Developer

Boston, MA · On-site

$59.25 - $78.25/hr

... common LLM orchestration frameworks (such as LangChain/LangGraph, Microsoft Agent Framework, or ... Strong software engineering fundamentals, including data structures, system design, and testing ...

Senior AI Engineer

Concord, MA · On-site

$114K - $157K/yr

Leverage LLM tooling/APIs such as LangChain and MCP connectors to implement retrieval-augmented ... Strong programming skills in Python and familiarity with modern data/ML pipelines. * Solid ...

Full Stack Developer

Arlington, MA · On-site

$65.85 - $82.32/hr

Foundational understanding of AI and LLM technologies, especially their application in workflow automation, developer productivity, business process improvement, and applied software development.

Senior AI Engineer

Concord, MA · On-site

$114K - $157K/yr

Leverage LLM tooling/APIs such as LangChain and MCP connectors to implement retrieval-augmented ... Strong programming skills in Python and familiarity with modern data/ML pipelines. * Solid ...

Data Engineer

Boston, MA · On-site

$124K - $149K/yr

You will help bridge enterprise data systems with LLM-based interfaces that support self-service ... Partner with AI/ML engineers to enable LLM-powered data access. * Contribute to AI-native data ...

Integrate with multi-provider LLM APIs (OpenAI, Google Gemini, etc.) and make principled selection decisions as the landscape evolves. * Evaluate and adopt emerging techniques in prompt engineering ...

Showing results 41-60

Llm Developer information

See Massachusetts salary details

$27

$54

$86

How much do llm developer jobs pay per hour?

As of Sep 4, 2026, the average hourly pay for llm developer in Massachusetts is $54.79, according to ZipRecruiter salary data. Most workers in this role earn between $43.08 and $66.44 per hour, depending on experience, location, and employer.

What does an LLM Developer do?

An LLM Developer designs, fine-tunes, and implements large language models (LLMs) for various applications, such as chatbots, content generation, and AI-driven tools. They work with machine learning frameworks, optimize model performance, and ensure efficient deployment. This role requires expertise in natural language processing (NLP), deep learning, and programming languages like Python.

What are the key skills and qualifications needed to thrive as an LLM Developer?

To excel as an LLM Developer, you need strong expertise in natural language processing (NLP), deep learning frameworks, and programming languages such as Python, typically supported by a degree in computer science or a related field. Familiarity with machine learning libraries (like TensorFlow or PyTorch), cloud computing platforms, and experience with prompt engineering or fine-tuning large language models is crucial. Excellent problem-solving abilities, collaboration, and effective communication skills help you design solutions and work efficiently within multidisciplinary teams. These qualifications are essential for successfully building, deploying, and optimizing large language models that drive impactful AI applications.

What is the role of a large language model developer?

A large language model developer designs, trains, and fine-tunes AI models that understand and generate human language. They work with machine learning frameworks, manage large datasets, and optimize models for accuracy and efficiency, often requiring knowledge of programming, deep learning, and natural language processing techniques.

What are the most commonly searched types of Llm Developer jobs in Massachusetts?

The most popular types of Llm Developer jobs in Massachusetts are:

What job categories do people searching Llm Developer jobs in Massachusetts look for?

The top searched job categories for Llm Developer jobs in Massachusetts are:

What cities in Massachusetts are hiring for Llm Developer jobs?

Cities in Massachusetts with the most Llm Developer job openings:

Infographic showing various Llm Developer job openings in Massachusetts as of August 2026, with employment types broken down into 81% Full Time, 8% Part Time, and 11% Contract. Highlights an 80% Physical, 5% Hybrid, and 15% Remote job distribution, with an average salary of $113,956 per year, or $54.8 per hour.

Senior Lead AI Engineer (AI Foundations: LLM Customization, Finetuning, Reinforcement Learning)

COMFORT SYSTEMS

Cambridge, MA • On-site

$230 - $262/hr

Other

This job post has expired 2 days ago. Applications are no longer accepted.


Job description

Overview:

At Capital One, we are creating responsible and reliable AI systems, changing banking for good. For years, Capital One has been an industry leader in using machine learning to create real-time, personalized customer experiences. Our investments in technology infrastructure and world-class talent — along with our deep experience in machine learning — position us to be at the forefront of enterprises leveraging AI. From informing customers about unusual charges to answering their questions in real time, our applications of AI & ML are bringing humanity and simplicity to banking. We are committed to continuing to build world-class applied science and engineering teams to deliver our industry leading capabilities with breakthrough product experiences and scalable, high-performance AI infrastructure. At Capital One, you will help bring the transformative power of emerging AI capabilities to reimagine how we serve our customers and businesses who have come to love the products and services we build.

Team Description:

The Intelligent Foundations and Experiences (IFX) team is at the center of bringing our vision for AI at Capital One to life. We work hand-in-hand with our partners across the company to advance the state of the art in science and AI engineering, and we build and deploy proprietary solutions that are central to our business and deliver value to millions of customers. Our AI models and platforms empower teams across Capital One to enhance their products with the transformative power of AI, in responsible and scalable ways for the highest leverage impact.

In this role, you will:
  • Partner with a cross-functional team of engineers, research scientists, technical program managers, and product managers to deliver AI-powered products that change how our associates work and how our customers interact with Capital One.
  • Design, develop, test, deploy, and support AI software components including foundation model training, large language model inference, similarity search, guardrails, model evaluation, experimentation, governance, and observability, etc.
  • Leverage a broad stack of Open Source and SaaS AI technologies such as AWS Ultraclusters, Huggingface, VectorDBs, Nemo Guardrails, PyTorch, and more.
  • Invent and introduce state-of-the-art LLM optimization techniques to improve the performance — scalability, cost, latency, throughput — of large scale production AI systems.
  • Contribute to the technical vision and the long term roadmap of foundational AI systems at Capital One.
The Ideal Candidate:
  • You love to build systems, take pride in the quality of your work, and also share our passion to do the right thing. You want to work on problems that will help change banking for good.
  • Passion for staying abreast of the latest research, and an ability to intuitively understand scientific publications and judiciously apply novel techniques in production.
  • You adapt quickly and thrive on bringing clarity to big, undefined problems. You love asking questions and digging deep to uncover the root of problems and can articulate your findings concisely with clarity. You have the courage to share new ideas even when they are unproven.
  • You are deeply Technical. You possess a strong foundation in engineering and mathematics, and your expertise in hardware, software, and AI enable you to see and exploit optimization opportunities that others miss.
  • You are a resilient trail blazer who can forge new paths to achieve business goals when the route is unknown.
Basic Qualifications:
  • Bachelor's degree in Computer Science, AI, Electrical Engineering, Computer Engineering, or related fields plus at least 6 years of experience developing AI and ML algorithms or technologies, or a Master's degree in Computer Science, AI, Electrical Engineering, Computer Engineering, or related fields plus at least 4 years of experience developing AI and ML algorithms or technologies
  • At least 6 years of experience programming with Python, Go, Scala, or Java
Preferred Qualifications:
  • 7 years of experience deploying scalable and responsible AI solutions on cloud platforms (e.g. AWS, Google Cloud, Azure, or equivalent private cloud)
  • Experience designing, developing, integrating, delivering, and supporting complex AI systems
  • Demonstrated ability to lead and mentor an engineering team and influence cross-functional stakeholders
  • Experience developing AI and ML algorithms or technologies (e.g. LLM Inference, Similarity Search and VectorDBs, Guardrails, Memory) using Python, C++, C#, Java, or Golang
  • Experience developing and applying state-of-the-art techniques for optimizing training and inference software to improve hardware utilization, latency, throughput, and cost
  • Passion for staying abreast of the latest AI research and AI systems, and judiciously apply novel techniques in production
  • Excellent communication and presentation skills, with the ability to articulate complex AI concepts to peers

Capital One will consider sponsoring a new qualified applicant for employment authorization for this position.

The minimum and maximum full-time annual salaries for this role are listed below, by location. Please note that this salary information is solely for candidates hired to perform work within one of these locations, and refers to the amount Capital One is willing to pay at the time of this posting. Salaries for part-time roles will be prorated based upon the agreed upon number of hours to be regularly worked.

Cambridge, MA: $229,900 - $262,400 for Sr. Lead AI Engineer

McLean, VA: $229,900 - $262,400 for Sr. Lead AI Engineer

New York, NY: $250,800 - $286,200 for Sr. Lead AI Engineer

San Francisco, CA: $250,800 - $286,200 for Sr. Lead AI Engineer

San Jose, CA: $250,800 - $286,200 for Sr. Lead AI Engineer

Candidates hired to work in other locations will be subject to the pay range associated with that location, and the actual annualized salary amount offered to any candidate at the time of hire will be reflected solely in the candidate’s offer letter.

This role is also eligible to earn performance based incentive compensation, which may include cash bonus(es) and/or long term incentives (LTI). Incentives could be discretionary or non discretionary depending on the plan.

Capital One offers a comprehensive, competitive, and inclusive set of health, financial and other benefits that support your total well-being. Learn more at the Capital One Careers website (https://www.capitalonecareers.com/benefits) . Eligibility varies based on full or part-time status, exempt or non-exempt status, and management level.

This role is expected to accept applications for a minimum of 5 business days.

No agencies please. Capital One is an equal opportunity employer (EOE, including disability/vet) committed to non-discrimination in compliance with applicable federal, state, and local laws. Capital One promotes a drug-free workplace. Capital One will consider for employment qualified applicants with a criminal history in a manner consistent with the requirements of applicable laws regarding criminal background inquiries, including, to the extent applicable, Article 23-A of the New York Correction Law; San Francisco, California Police Code Article 49, Sections 4901-4920; New York City’s Fair Chance Act; Philadelphia’s Fair Criminal Records Screening Act; and other applicable federal, state, and local laws and regulations regarding criminal background inquiries.

If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation, please contact Capital One Recruiting at 1-800-304-9102 or via email at RecruitingAccommodation@capitalone.com . All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodations.

For technical support or questions about Capital One's recruiting process, please send an email to Careers@capitalone.com

Capital One does not provide, endorse nor guarantee and is not liable for third-party products, services, educational tools or other information available through this site.

Capital One Financial is made up of several different entities. Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC).

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