Product Engineer

Overview
Join to apply for the Product Engineer role at Siena AI .

Siena is the first intelligence layer for customer experience. We're creating an operating system of AI agents that learn, remember, and act across every customer touchpoint—from support conversations to shopping experiences to voice and social media interactions. Siena doesn't just automate support; it powers shopping agents, builds persistent customer memory, generates actionable business insights, and creates empathetic interactions that feel human. We're transforming how businesses understand and connect with their customers, turning every interaction into intelligence that makes the next one better.

The Team
We’re a small, distributed team that punches above our weight. Every person here has outsized impact because we’ve built leverage into everything we do. If you're excited about building something that doesn't exist yet, keep reading. We're building agents that remember customers, learn from every interaction, and connect experiences across channels.

What we’re looking for
You’re a builder who thrives at the frontier of AI agents, customer experience, and e-commerce. You’ll own critical domains in our AI agent ecosystem, build new capabilities, shape evaluation and QA systems, and collaborate with product, design, and leadership to create the infrastructure for the future of e-commerce and CX. You’ll bring strong opinions, push back when something isn’t worth building, and help us choose the right bets.

You have

3+ years of software engineering experience building technical B2B products, ideally in CX, e-commerce, or AI automation

AI-native mindset — you already use tools like Claude, Cursor, v0, or ChatGPT daily to build and ship faster

Full-stack fluency — React, TypeScript, Node.js, APIs, integrations, data modeling

Comfort working directly with clients and solving complex, real-world problems

Curiosity and a builder’s DNA — you like figuring things out, not just following specs

Product judgment — you're able to build product with agency and autonomy

You thrive when

Building complex systems that blend UX, AI, and integrations

Designing evaluation and QA processes that make agents continuously improve

Shipping new capabilities that change how shopping and CX happen

Juggling multiple initiatives while keeping the big picture in mind

Debating trade-offs, pushing back on requests, and shaping the why behind what we build

What you’ll do

Build new agent capabilities end-to-end and make them work seamlessly across platforms

Translate messy customer workflows into elegant product features and deployment opportunities

Design and ship evaluation and QA systems that improve agent performance over time

Expand our integrations ecosystem by shipping new platforms and enterprise connections

Own platform automation and onboarding to help customers go live in days, not weeks

Work across multiple initiatives at once, balancing speed with thoughtful trade-offs

Partner with product, design, and leadership to shape what gets built—and what doesn’t

Why Siena?

Meaningful impact. Your work directly shapes our product and company.

Globally distributed team working at the bleeding edge of CX and AI.

Great salary plus the opportunity for equity or stock grants.

Learning budget. If you're growing, so are we.

The thrill of building something new. Join us at a stage where your contributions matter most.

AI-fluency. Make AI your second nature.

Tackle unsolved problems. We’re redefining how customer experience will look in the next decades.

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’re direct about feedback—both giving and receiving it—because they care more about getting things right than being polite. They maintain high standards while moving at startup speed, and they build real relationships with teammates because they know that's how great work gets done. When things get tough, they adapt and keep pushing forward.

Our approach to AI
The people who thrive here treat AI like a natural extension of themselves. They've built their own ecosystem of agents—some for research, others for debugging, writing, analysis, or writing code. They know which AI works best for what problem. Everyone gets premium accounts plus a quarterly budget for new tools. Demo days where someone shows off clever workflows and Slack threads about which model handles a specific use case better help us share knowledge. At Siena, we’re looking for people who want to break boundaries, create the future, and reshape industries. If that’s you, we look forward to your application.

Equal Employment Opportunity: Siena provides equal employment opportunities to all employees and applicants for employment without regard to race, color, 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.

Additional
Location note: Dublin 12, County Dublin, Ireland.

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