Senior Solutions Engineer

Siena AI; United States; Remote; USD 130,000 - 210,000; Full time

Benefits offered by this job

Equity or stock grants

Learning budget

Job summary

Siena AI seeks a senior Solutions Engineer to own the technical side of the customer lifecycle, from pre‑sales demos through post‑sales builds. You will maintain the demo environment and work from within a GTM team, partnering with AEs, Engineering, Product, and Deployment to deliver tailored integrations.

You’ll run live demos, scope multi‑week POCs, and draft SOWs with ROI backing. This role requires strong communication, hands‑on API work, and deep knowledge of ecommerce CX tools, in a fully

Qualifications

• 5+ years as a Solutions or Sales Engineer in B2B SaaS.
• Hands-on with APIs, webhooks, and authentication; comfortable with Postman.
• Experience with ecommerce CX stacks such as Shopify plus helpdesks.

Responsibilities

• Build and maintain the demo environment and asset library for the GTM team.
• Run demos using real data across Support, Shopping, Social, Reviews, and Voice agents.
• Lead live technical discovery and propose solutions when the product needs tailoring.
• Own multi-week POC and trials from start to handoff.
• Scope and test integrations across the ecommerce CX stack; decide native vs. custom.
• Collaborate with AEs, Engineering, Product, and Deployment; own the technical voice.
• Draft and scope Statements of Work with ROI justification.
• Triages issues and informs roadmap with real-deal insights.

Skills

APIs & webhooks

Demos & POCs ownership

Communication with non-technical CX/Le

AI/LLM agent familiarity

Pricing usage-based models

Tools

Postman

Shopify

Gorgias

Zendesk

Kustomer

Dixa

Job description

Meet Siena

Siena is the Agent of Record for CX, built for consumer brands like Spanx, FIGS, Brooklinen, and Grüns.

Siena is the Agent of Record for CX, built for consumer brands like Spanx, FIGS, Brooklinen, and Grüns. It runs as a connected multi‑agent stack on top of a shared intelligence layer: agents that sell, support, listen, handle social and voice across the entire customer journey, turning every conversation into signal you can act on.

The team

We are a small, fully distributed, global team. We have built leverage into how we work, which is what lets a team this size move at the speed we do. We hire athletes. Everyone here owns real outcomes, defaults to writing over meetings, communicates with directness, and acts the moment they see something worth acting on. Low ego, high standards, fast clock.

If you want to set the bar rather than follow one, keep reading.

The Role

You’re the second Solutions Engineer on a small, high-output GTM team, owning the technical side of the customer lifecycle: pre‑sales demos and integration scoping through to post‑sales custom builds inside existing accounts. You’ll build and maintain the demo environment the whole GTM team sells from, then stay in accounts after the deal closes, building workflows and integrations alongside deployment. You’ll partner closely with AEs, Engineering, Product, and Deployment, and be the credible technical voice in the room, solo or with an AE.

What You’ll Do

• Build and maintain the demo environment and asset library the whole GTM team relies on to sell accurately
• Run demos built around the prospect’s real data, across our Support, Shopping, Social, Reviews, and Voice agents and Siena Intelligence
• Lead live technical discovery: map the prospect’s stack, answer "can it do X?" honestly, propose solutions when the standard product doesn’t fit
• Own multi‑week POC and trial programs end to end, with a clean handoff to Deployment
• Scope integrations across the ecommerce CX stack, decide native versus custom, and build and test them yourself
• Work in existing accounts alongside field deployment managers to scope new integrations and workflows
• Draft, scope, and price Statements of Work, backed by the technical ROI case
• Triage issues, file well‑scoped tickets, and bring product gaps into roadmap reviews grounded in real deals

Who You Are

The Bar

If you’re missing any of these, this isn’t the role for you.

• 5+ years as a Solutions or Sales Engineer (pre‑sales) in B2B SaaS, with a track record of personally owning demos and POCs
• Hands‑on with APIs, webhooks, and authentication. Comfortable in Postman, judging integration feasibility, and building it yourself
• Working knowledge of the ecommerce CX stack: Shopify plus helpdesks (Gorgias, Zendesk, Kustomer, Dixa, or similar)

Strong Signal

Not dealbreakers, but what separates a good hire from a great one.

• Clear communicator: you explain AI and technical concepts to non‑technical CX or commerce leaders, and write tight SOWs and RFP responses
• Self‑directed: comfortable prioritizing across many live deals, and building your own process and leverage with AI tooling
• Have worked with usage‑based pricing
• Hands‑on experience configuring, prompting, or selling LLM or AI agent products

Nice to Have

Bonus, not required.

• Contact‑center technology experience
• Experience writing and pricing custom‑integration SOWs, or a forward‑deployed background
• Familiarity with the fast‑moving AI CX landscape

Not a Fit If

• You want a pure pre‑sales role with no post‑sales account work
• You want to lead a team, this is a high‑agency, execution role
• You need someone else to build and test the integration for you
• You’re not comfortable being the solo technical voice in the room

Why Siena?

Real ownership. You will own problems, not tasks, with the autonomy to solve them your way and the trust to do it without a manager in your inbox. Work that ships and matters. What you build reaches real consumer brands fast. A category we are creating. The Agent of Record is new ground, with unsolved problems and cutting‑edge models, not a crowded field to compete in. A team that respects your judgment. Globally distributed, async‑first, low bureaucracy. We hire adults and treat you like one. Great salary plus equity or stock grants. Own a piece of what you build. Learning budget. If you are growing, so are we. AI‑fluency by default. Few places will push your work with production AI further or faster.

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 (ChatGPT, Claude, Perplexity Pro, Cursor, Lovable) plus a quarterly budget for new tools. But the magic happens in how we share knowledge. Demo days where someone shows off a clever workflows. Slack threads about which model handles a specific use case better. Learning from each other’s AI workflows.

How We Hire

We use AI‑assisted screening tools as part of our hiring process. All decisions are made by humans. You can request a human‑only review at [e-mail].

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.