Senior Software Engineer - Research and Development New London, England, United Kingdom · Londo[...]

PolyAI; London; On-site; GBP 50,000 - 90,000; Full time

Job summary

An innovative firm is seeking a Senior Software Engineer to join a new team focused on enhancing large language models. In this exciting role, you will leverage your Python expertise to develop tools that improve model visibility and configurability. You will work collaboratively with cross-functional teams, employing a data-driven approach to ensure model reliability and accuracy. This position offers a unique opportunity to contribute to cutting-edge technology that transforms customer service automation. If you are passionate about driving impactful solutions in a dynamic environment, this role is perfect for you.

Benefits

Employee share options plan

25 days holiday plus bank holidays

Flexible working from home policy

Work from outside of the UK for up to 6 months

Enhanced parental leave

Bike2Work scheme

Annual learning and development allowance

One-off WFH allowance

Company-funded fertility programs

Private healthcare and dental cover

Qualifications

• 4+ years of experience in Python development.
• Experience with evaluation suites and data-driven tools.

Responsibilities

• Develop software for visibility and configurability of LLM models.
• Prototype and iterate on solutions for production-level quality.

Skills

Python

Problem-solving

Data-driven methodology

Iterative development

Education

Degree in Computer Science

Equivalent experience

Tools

AWS

GCP

Azure

Job description

Senior Software Engineer - Research and Development

PolyAI automates customer service through lifelike voice assistants that let customers lead a conversation. Our voice assistants make it possible for businesses to deliver outstanding customer service that rivals their human agents. Our customers, which include the world’s leading logos, are expanding how they use our platform, driving automation of critical customer service operations and integrating PolyAI into their daily customer service workflows.

This is an exciting position as we are building a new team within the Engineer function. This team will focus on the application of the latest technology into our product.
In this role, you will work on building software to enhance the visibility and configurability of large language models (LLMs). You will be responsible for rapidly developing tools and platforms to evaluate, iterate, and productionalize models, ensuring their reliability and accuracy.

Responsibilities:

1. Must have at least 4 years of Python experience.
2. Must have at least 4+ years working experience.
3. Develop software that provides visibility into LLM models and offers configurability for tuning and evaluation.
4. Take a hands-on approach to quickly prototype, test, and iterate on solutions, moving from proof-of-concept to production.
5. Employ a data-driven methodology to drive model accuracy, leveraging evaluation results to inform decisions.
6. Collaborate with cross-functional teams to integrate developed tools and ensure they meet production standards.
7. Communicate findings and ranking metrics clearly to both technical and non-technical stakeholders.

Requirements:

1. Open to feedback and happy to work in an iterative position.
2. Degree in Computer Science or related field, or equivalent experience.
3. Strong proficiency in Python.
4. Experience developing evaluation suites, datasets, and data-driven tools for model reliability testing.
5. Ability to rapidly prototype and iterate on solutions while maintaining a focus on production-level quality.
6. Strong problem-solving skills and a creative mindset.
7. Familiarity with cloud platforms such as AWS, GCP, or Azure is a plus.

Benefits:
Participation in the company’s employee share options plan.
25 days holiday, plus bank holidays.
Flexible working from home policy.
Work from outside of the UK for up to 6 months each year.
Enhanced parental leave.
Bike2Work scheme.
Annual learning and development allowance.
One-off WFH allowance when you join.
Company-funded fertility and family-forming programmes.
Menopause care programme with Maven.
Private healthcare and dental cover, discounts on gym members and relaxation apps, and access to a range of mental health programs.

At PolyAI, we take great pride in our values—they guide everything we do. We believe that a strong culture leads to meaningful work and lasting impact.

Our core values are:

1. Only the best: We expect the best from our people, we hire people that expect the best from themselves, and we nurture this drive for excellence.
2. Ownership: We care deeply about what we do. We take ownership of our initiatives, decisions and outcomes.
3. Relentlessly improve: We demand more from ourselves and are always evolving. Continuous, obsessive improvement is the only way we will transform the world of conversational AI.
4. Bias for action: Our world moves quickly and so do we. We take calculated risks and we deliver impact fast.
5. Disagree and commit: We are all working toward the same goal. If we don’t agree with something, we work hard to understand it and when a decision is made, we accept it and give it our all.
6. Build for people: We are hyper-focused on delivering the best automated experiences possible so that we can empower people to get exactly what they need, when they need it.

PolyAI is proud to be an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All employment decisions at PolyAI will be based on the business needs without attention to ethnicity, religion, sexual orientation, gender identity, family or parental status, national origin, neurodiversity status or disability status.

Kindly find the Privacy Notice for our recruitment process by following the link here. This document provides important information regarding how we handle your personal data throughout the recruitment journey.

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