Product Manager in London

Siena is the first intelligence layer for customer experience, building an operating system of AI agents that learn, remember, and act across every customer touchpoint—from support conversations to shopping experiences, voice, and social media interactions. We enable products to use, remember, and act on every customer touchpoint, turning each interaction into intelligence that improves the next one.

We are a small, distributed team that punches way above our weight. Every person has outsized impact within a highly leveraged organization, moving fast and building fun, impactful experiences.

Who We’re Looking For

• The operator who wants to build – experience as solutions engineer, implementation manager, technical account manager, or customer success in technical startups. You’ve implemented complex systems, managed enterprise rollouts, and architected solutions that hit the pain points in production.
• The technical PM – have shipped product at technical B2B companies, ideally in CX, helpdesk, e‐commerce, marketing tools, or AI automation. You understand how software is built and adopted and thrive cross‐functionally with engineering, design and go‐to‐market teams.
• The consumer‐minded builder – know what makes products feel good to use, think about user behaviour, purchase patterns and building premium experiences. You bring a user‐first lens to enterprise software.

You Have

• 3+ years in PM, solutions engineering, implementation, technical account management, customer success engineering, sales engineering, solutions consulting, or product ops
• Experience with technical products and enterprise customers
• AI‐native mindset – comfortable with Claude, Cursor, v0 and high LLM usage
• Technical fluency – able to scope webhook systems, OAuth flows, and complex integrations
• Builder mentality – ship features, write documentation, run demos, and measure outcomes
• Customer confidence – thrive in conversations with customers, run demos, and co‐sell with sales

You Thrive When

• Building complex AI systems that get smarter over time
• Shipping new capabilities that change how shopping and CX happen online
• Seeing customers adopt what you built, create real value, and move business metrics

What You’ll Do

• Own product areas end‐to‐end in our AI agent ecosystem: discovery, shipping, and enabling customers and internal teams.
• Build new agent capabilities that work seamlessly across platforms.
• Design and ship evaluation systems that keep our agents continually smarter; build QA suites, automated testing, and performance monitoring.
• Own platform automation and onboarding to help customers go live in days, not weeks.
• Expand our integrations ecosystem by shipping new platforms and enterprise app requirements.
• Run full launch cycles from internal testing to early access to GA, including customer enablement through webinars, documentation and training sessions.
• Demo your own products to customers and co‐sell with sales; become a recognized PM in our customer communities.
• Act as a forward‐deployed PM – meet customers onsite, break down enterprise workflows into features, scope in real time, validate pain points, and prototype quickly.

Hiring Process

• Fill a short form and jump on an intro call where we discuss your product and launch experience.
• Build a hands‐on case study – code a small AI feature, provide a live link and a Loom walkthrough.
• Join a round of interviews to discuss experience in depth.
• Work with us for a trial week on a real project – ship something meaningful while experiencing our culture.

Benefits

• Meaningful impact – your work directly shapes our product and company.
• Globally distributed, bleeding‐edge team in CX and AI.
• Competitive salary plus equity or stock grants.
• Learning budget – grow with us.
• AI‐fluency – make AI a second nature.
• Tackle unsolved problems – redefine the next decades of customer experience.

Our Values

The people who thrive here are curious, customer‐obsessed, and take ownership without being asked. They fix problems first and explain later. They are direct with feedback, focused on getting things right over politeness, and maintain high standards while moving at startup speed. Building real relationships with teammates is essential for great work. When things get tough, they adapt and keep pushing forward.

Our Approach to AI

We treat AI like a natural extension of ourselves, building ecosystems of agents for research, debugging, writing, analysis, or coding. Everyone gets premium AI accounts and a quarterly budget for new tools. Knowledge sharing flows through demo days, Slack threads, and collaborative learning.

Siena provides equal employment opportunities to all employees and applicants for employment without regard to race, colour, religion, sex, national origin, age, disability, genetics, sexual orientation, gender identity, or gender expression. We are committed to a diverse and inclusive workforce and welcome people from all backgrounds, experiences, perspectives, and abilities.