Lead system design for AI/ML services, develop prompting strategies, mentor junior engineers, and ensure code quality while improving product delivery.
Who You Are:
Polly is looking for a skilled and enthusiastic software engineer to join our collaborative engineering team and drive game-changing initiatives across Large Language Model (LLM) technologies and prompt-based AI solutions. With 6+ years of software development experience, including mentoring others and working with distributed systems and relational databases, you’re eager for your next challenge at a hyper-growth SaaS company. In this role, you’ll design and test prompts for diverse use cases, ensuring high-quality output that reaches thousands of end users and plays a key role in our forward-looking innovation strategy.
Does this sound like you? If so, keep reading and apply today!
What you’ll do:
- Lead and contribute to the system design for our AI/ML-based services
- Develop, implement, and test prompts, fine tuned models, and agentic systems integrating with a variety of products.
- Analyze internal and external feedback and behaviors to continuously improve the output quality of LLMs and Agentic Systems.
- Research and adopt best practices based on experience, analysis, and input from the broader software team.
- Develop code that is highly readable, maintainable, and testable including documentation, excellent architecture, and automated testing
- Actively participate in interviewing and evaluating new team members
- Mentor junior members of the software engineering team in all aspects of software development across multiple projects with multiple customers
- Prioritize your work and the work of others with a sense of urgency to ship products in time to have the desired business impact while balancing a quality mindset
- Review code, help drive technical excellence through best practices and latest tools
What you have:
- Bachelor's degree in Computer Science or a related field
- 6+ years of professional experience
- Applied AI Engineering experience integrating LLMs or other ML models into modern web applications.
- Senior level experience working with Large Language Models such as GPT-3/4, ChatGPT, Claude, or CoHere
- Proficiency in Python, Javascript, SQL, C#
- Knowledge of cloud computing platforms and AI deployment tools
- A strong background in AI product development
- Ability to define and execute on strategic and visionary goals
- Excellent communication skills
- Ability to work in a team environment
- Strong Backend Experience working on customer facing features/teams
- Some experience with modern frontend technologies (Vue, React, etc.)
Extras you bring to the table:
- Foundational knowledge of Natural Language Processing (NLP) and Machine Learning tailored to a specific business need
- Deploying into a public cloud service (AWS, GCP, etc.)
- Experience with containerization (Docker/Kubernetes)
- Experience in deploying AI tools
- Ability to gather and preprocess data for use in ML and AI
- Experience with service monitoring, metrics, alerting, log aggregation, and tracing
- Experience with functional/acceptance testing
- Experience with popular AI frameworks and libraries such as TensorFlow, PyTorch, huggingface, Amazon Bedrock, or Anthropic
Why join Polly?
- We are attacking a trillion-dollar market with gross inefficiencies and seeking to transform the way an entire industry operates
- We have an experienced leadership team that previously built large and impactful platforms
- Outstanding opportunity for professional growth and upward mobility
- Direct engagement with the decision makers and senior business leaders
- Competitive salaries
- 100% paid medical/vision/dental/disability/life insurance
- Flexible vacation
Let's get to know each other.
Polly has pioneered the next generation of mortgage capital markets technology with its cutting-edge, data-driven platform. Its enterprise-grade solutions, including the industry's only cloud-native, commercially scalable product, pricing, and eligibility (PPE) engine and first-of-its-kind Polly/™ AI platform, empower the nation's top banks, credit unions, and mortgage lenders to increase profitability, automate workflows, and revolutionize the loan officer and broker experiences. As a mortgage technology trailblazer, Polly is committed to driving meaningful value and ROI through best-in-class innovation that enables unlimited configurability, flexibility, granularity, and scalability. Polly was founded by a seasoned team of mortgage capital markets and technology experts and is headquartered in San Francisco, California. Recognized as a pioneer in mortgage capital markets, as well as in culture and career development, Polly was named to Forbes' America's Best Startup Employers in 2025. This evaluation was based on three key criteria: Employer Reputation, Employee Satisfaction, and Company Growth.
To learn more, follow Polly on LinkedIn or visit www.polly.io. Polly is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, age, color, national origin, religion, sex, gender identity, sexual orientation, marital status, pregnancy status, disability status, veteran status, or any other legally protected status. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.
Beware of recruitment scams impersonating the Polly brand or our employees. Our team communicates only through official Polly channels, and we will never ask for sensitive information over text or conduct text-only interviews. If you are ever suspicious or in doubt, reach out to us directly at [email protected]. We care deeply about this network and your experience.
Top Skills
Amazon Bedrock
Anthropic
AWS
C#
Docker
GCP
Huggingface
JavaScript
Kubernetes
Python
PyTorch
SQL
TensorFlow
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