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.

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.

Depending On Team, Responsibilities Can Include

• Contributing to our user-facing platform for building and configuring voice assistants,
• Contributing to the implementation of our multi-tenant infrastructure, across multiple cloud vendors ensuring long-term scalability and maintainability.
• Taking a major role in our software development, through writing code, tests, as well as contributing to design ideas, documents and performing code reviews.
• Working independently on the technical design and implementation of full stack features for our agent studio platform, from UI through backend to data pipelines

Requirements

• 3+ years as a professional Software Engineer, with significant experience delivering both backend and frontend features in production.
• Proficiency in Python or Go, Typescript and React all a must
• Hands-on experience in designing, deploying, and maintaining RESTful APIs
• Experience with one or more cloud services: AWS, GCP, Azure
• Understanding of algorithms, data structures, system design and complexity analysis

We’re looking for talented Senior Full Stack Software Engineers to join one of our three high impact teams: Runtime , Data , and Product Engineering . All three teams work closely together, share high engineering standards, and solve challenging technical problems at scale, but each has its own mission and area of focus.

• Runtime: own the global infrastructure that powers real-time voice interactions. In this role, you’ll work at the core of the agentic process - streaming audio, transcribing speech, using LLMs and acting on their output, and synthesising natural voice. You’ll design and optimise systems across VoIP, WebRTC to deliver low-latency, secure, and reliable conversations. Your work directly shapes the user experience of every call, driving down response times, improving comprehension, and ensuring we meet strict SLAs for performance and security.
• Data: play a key role in delivering the next generation of our no-code agent studio platform. In this role, you’ll be leading the design and development of features that power insight generation, reporting, and the data-driven backbone of our no-code platform for building voice assistants.
• Product Engineering: help shape our cutting-edge low-code platform. This role offers the opportunity to work end-to-end, from design to implementation, on creating features which enable a simple user experience for interacting with complex AI systems.

You’ll go through a centralised hiring process that lets us get to know your skills and preferences, while you explore which team best aligns with your interests and expertise. At the end, we’ll match you with the team where you can have the most impact.

We currently have multiple engineering roles open across different teams. Please apply to the one role that feels like the best match for your skills and experience . Our Talent team will review your application against all open positions. If we believe you may be a stronger fit for another role or team, we’ll ensure your application is considered there as well.

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

🫂TELUS Health EAP 24/7 - offers you and your chosen family confidential, judgment-free support for any work, health, or life challenge

🧡 Enhanced parental leave

🚲 Bike2Work scheme

📚 Annual learning and development allowance

🏡 We’re all about making WFH work for you - that’s why we offer a one-off WFH allowance when you join. Offering perks like noise-cancelling headphones or a comfortable desk chair to boost your comfort and focus!

👨‍👩‍👧 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 want the world to enjoy the experiences they have with us. We are building for a future that prefers automation.

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.