Senior Backend Engineer

Oscar; Austin (TX); Remote; USD 120,000 - 180,000; Full time

Job summary

A leading company is seeking a Senior Backend Engineer to enhance their AI systems. This role involves designing backend services, integrating large language models, and collaborating with teams to deliver scalable features. The position offers competitive pay, equity, and a remote-first culture, making it ideal for skilled engineers looking to make an impact.

Benefits

Competitive healthcare

Flexible PTO

Home office stipend

Wellness allowance

Learning & development budget

Qualifications

• 5+ years of backend software development experience.
• Strong proficiency with Python and cloud infrastructure (AWS, GCP, or similar).
• Experience deploying and working with LLMs in real-world products.

Responsibilities

• Design, build, and maintain backend services and APIs using Python.
• Integrate and serve LLMs in production.
• Collaborate with ML engineers and product teams.

Skills

Python

Cloud Infrastructure

RESTful APIs

Asynchronous Programming

Containerized Services

Data Pipeline Tools

Product Mindset

Job description

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This range is provided by Oscar. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$120,000.00/yr - $180,000.00/yr

Job Title: Senior Backend Engineer - Python / AI / LLMs
Location: Remote (U.S. preferred)
Employment Type: Full-time
Salary: $120,000 - $180,000 + equity
Benefits: Competitive healthcare, flexible PTO, remote-first culture, home office stipend, wellness allowance, learning & development budget

About Us

Job Title: Senior Backend Engineer - Python / AI / LLMs
Location: Remote (U.S. preferred)
Employment Type: Full-time
Salary: $120,000 - $180,000 + equity
Benefits: Competitive healthcare, flexible PTO, remote-first culture, home office stipend, wellness allowance, learning & development budget

About Us

We're a fast-moving startup on a mission to build AI-powered tools that make complex work simple, faster, and more intelligent. We leverage cutting-edge large language models (LLMs) to solve real problems across industries. Our team is small, senior, and passionate about what we build-every line of code makes a visible impact.

We're looking for a Senior Backend Engineer to join us in scaling the backend infrastructure that powers our AI systems.

What You'll Do

• Design, build, and maintain backend services and APIs using Python (FastAPI, Flask, or Django)

• Integrate and serve LLMs (e.g., OpenAI, Anthropic, Hugging Face, or open-source models) in production

• Collaborate with ML engineers and product teams to deliver intelligent, scalable features

• Build and optimize data pipelines for inference, prompt processing, and model fine-tuning

• Architect systems that balance performance, security, and maintainability

• Own projects end-to-end-from architecture and implementation to testing and monitoring
  
  

What We're Looking For

• 5+ years of backend software development experience

• Strong proficiency with Python and cloud infrastructure (AWS, GCP, or similar)

• Experience deploying and working with LLMs in real-world products

• Deep understanding of RESTful APIs, asynchronous programming, and containerized services (Docker, Kubernetes)

• Familiarity with data pipeline tools and task queues (Airflow, Celery, etc.)

• Product mindset-you think beyond code and care about usability, performance, and impact
  
  

Bonus Skills (Not Required but Nice to Have)

• Experience with FastAPI

• Familiarity with vector databases (Pinecone, Weaviate, FAISS)

• Prompt engineering or fine-tuning experience with LLMs

• Background in NLP, search, or applied ML

• Experience building dev tools, SaaS, or productivity platforms
  
  

Why You'll Love Working Here

• Competitive salary ($120K-$180K) + meaningful equity

• Fully remote, flexible work environment

• Comprehensive health, dental, and vision insurance

• Wellness, L&D, and home office stipends

• Work on cutting-edge AI systems that ship to real users

• Smart, low-ego team that values impact over bureaucracy
  

Oscar Associates Limited (US) is acting as an Employment Agency in relation to this vacancy.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Industries

  Banking

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