Senior Full Stack Software Engineer (Voice Team - Must be UK)

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.

We're on the lookout for a Senior Full Stack Software Engineer based in the United Kingdom to join our tech team and play a key role in crafting user-friendly voice experiences. In this role, you'll be responsible for the development of our in-house voice stack, helping develop both front-end features on our user-facing platform as well as internal tooling.

Collaborating with a diverse engineering team, you'll contribute to a cohesive and scalable codebase. Your focus includes implementing new features on our platform. If you're passionate about technology, enjoy tackling challenges, and are eager to contribute to our friendly, innovative environment, we'd love to welcome you aboard!

Minimum Qualifications

• 5+ years professional working experience in a full stack development role within a Technical Business or SaaS company
• Hands-on experience in designing, deploying, and maintaining RESTful APIs
• Advanced commercial experience with Python, React, AND Typescript/Javascript
• Working proficiency in verbal and written English
• Bachelor’s degree or Master’s in Computer Science, Engineering, a relevant technical field or equivalent practical experience

Your Responsibilities Will Involve

• Building and maintaining internal tools which allow speedy data annotation and curation for training machine learning models, as well as admin panels for observability and rollouts of critical pipeline changes.
• Contributing to our user-facing platform for building and configuring voice assistants, particularly
• Mentoring junior Engineers
• Contributing to the implementation of our multi-tenant infrastructure, across multiple cloud vendors.
• Taking a major role in our software development, through writing code, tests, as well as contributing to design ideas, documents and performing code reviews.

Preferred Qualifications

• Experience with one or more cloud services: AWS, GCP, Azure
• Understanding of algorithms, data structures, system design and complexity analysis
• A background or interest in applied machine learning, supercharging teams by building internal tools
• Finds enjoyment in technical challenges and wants to contribute directly to solutions in a start-up environment.

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

• 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.
• Ownership: We care deeply about what we do. We take ownership of our initiatives, decisions and outcomes.
• 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.
• Bias for action: Our world moves quickly and so do we. We take calculated risks and we deliver impact fast.
• Disagree and commit: We are all working toward the same goal. If we donʼt agree with something, we work hard to understand it and when a decision is made, we accept it and give it our all.
• 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.

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