Description

Job Title: Full-stack Engineer

The Applied AI team at Circle is at the forefront of leveraging AI to drive innovation across our company.

We’re looking for a Senior Full-stack Engineer, Applied AI, to help drive the development of AI solutions that enhance user experiences across our platform, both internally and externally.

If you’re passionate about working on real production use cases of large language models (LLMs) and want to contribute to transformative AI applications, this role is for you.

What you’ll be doing

• Ship full-stack AI projects end to end – exciting projects such as AI Agents, Retrieval-Augmented Generation (RAG), Structured Extraction, internal tooling for customer-facing teams, and build infrastructure for LLM inference.
• Help guide the end-to-end architecture and technical strategy for AI solutions.
• Improve processes, tools, and systems to scale AI solutions across Circle.
• Optimize AI infrastructure for performance, reliability, and cost-efficiency.
• Help us stay up-to-date with the cutting-edge AI research, techniques, and tools.

What you’ll need to be successful

• 5+ years experience working as a full-stack engineer on complex web applications.
• Strong proficiency in Ruby on Rails, MySQL/Postgresql, ReactJS. Familiarity with both frontend and backend is necessary, but a high degree of proficiency in both is not a requirement.
• Strong proficiency in at least one programming language commonly used for AI development (Python, JavaScript, TypeScript).
• You have deployed at least one AI Agent to production, with a deep understanding of the entire development lifecycle — from initial concept to final deployment with customer feedback loops.
• Hands-on experience with AI frameworks and tools, such as OpenAI, Anthropic, Hugging Face, LangChain, and vector databases.
• Strong understanding of NLP, ML, and LLM fundamentals – including modern LLM technologies, RAG, and prompt engineering techniques.
• A desire to work in an environment which values speed of iteration and individual autonomy, while also embracing personal accountability and the ability to collaborate effectively as part of a dynamic team.

Bonus points

• You have contributed to open-source AI/ML projects.

$130,000 – $140,000 USD per year

The cash compensation range shown is a starting point. In addition to equity, benefits and perks, your cash compensation is subject to an annual review and increase on a once per year basis.

The fun stuff

• Fully remote: work from anywhere in the world!
• Autonomy and trust to do your job: we care about outcomes over everything else.
• Paid time away: all employees are given 35 days of PTO annually. We also offer a paid sabbatical after 5 years.
• Generous U.S. benchmarked compensation and startup equity no matter where you are in the world.*
• Awesome medical coverage with 100% coverage for you and your family, or medical reimbursement options where applicable!*
• Parental leave for parents expanding their family, or just starting one.
• Home office stipend to help you get up and running.
• Learning & development stipend to help you level up your professional skills.
• Annual bonus potential for roles that don’t already receive variable income or commission.
• Company retreats: Twice a year, the Circle team gets together for a fully paid company retreat in incredible places around the world! We’ve had past retreats in Colombia, Portugal, and Mexico, with more planned on the horizon.
• Check out our Careers page for more.

Diversity, Equity & Inclusion

As a fully-remote international company, diversity is baked into our DNA. Here’s how our CEO, Sid Yadav, frames our hiring mission: “let’s find talent in underserved and under-represented corners of the world, set them up to do the best work of their lives, and in turn, change their life.” To achieve this hiring mission, we offer competitive U.S. benchmarked compensation no matter where someone’s located in the world, and we proactively seek candidates who expand representation of backgrounds, cultures and lived experiences in our teams.

Equal Employment Opportunity

Circle is an equal opportunity employer and as such, we do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, or any other characteristic protected by applicable laws. If you require any accommodations during the recruitment process, please let us know and we will work with you to meet your needs.

Hey! Boost your skills/chances of getting hired faster. Take short AI courses for FREE – Click HERE!

Before you apply: Here is an interview Q&A for you: Click here

NOTE: Here is why some companies may not hire you.

Hey!! Here is how to pause or cancel your subscription 

This gaming phone blew my mind — here’s my honest review: Click here