Senior Customer Success Manager

At Fyxer AI, we’re not building a traditional Customer Success team — we’re building a high-leverage commercial engine that turns relationships into revenue and support into strategic partnership.

Our CSMs don’t just react — they lead. They are commercially-minded operators who see opportunity in every interaction, drive growth through insight, and build trust that compounds over time.

The Role

This is a hands-on, high-impact role for someone who thrives in ambiguity, moves fast, and loves building from zero.

You’ll work with a variety of customers — from fast-growing startups to complex enterprises — helping them onboard, scale, and expand with Fyxer AI. You’ll be central to how we grow: turning usage into value, and value into revenue.

We’re looking for someone who’s comfortable in a startup environment — someone who knows how to sell through success, build relationships across an organization, and create scalable motions from scratch.

What’s on Offer

• Location: Onsite in our New York office (we’re a 42-person company with 10 in NYC — this role is in-person, no remote)

• Compensation: $100,000–$150,000 base + equity + benefits

• Hiring Manager: Violaine Yziquel, Chief Commercial Officer

What Success Looks Like

You’ll be on the frontline of our Customer Success motion — helping define it while actively delivering results. We don’t have all the playbooks or tooling in place yet. You’ll help build them while ensuring our customers are supported, engaged, and growing.

Success means:

• Renewals are a no-brainer because value is clear and relationships are deep

• Expansions happen regularly because opportunities are spotted and acted on

• Customers lean on us as strategic partners, not vendors

Your Core Responsibilities

1. Drive Retention & Expansion Across Strategic Accounts

• Own a portfolio of high-potential, multi-segment customers (enterprise and high-growth startups)

• Manage the full renewal and plan for expansion cycle

• Build strong, multi-threaded relationships across customer teams

• Surface and close commercial opportunities through value-driven conversations

2. Build the Foundations of Customer Success at Fyxer AI

• Develop scalable, repeatable playbooks that leverage AI insights to drive implementation, renewal, and expansion

• Help shape our GTM tech stack — choosing and implementing the right tools for scale

• Define and refine KPIs, dashboards, and success metrics that matter most

3. Be a Strategic Partner to Product, Sales & Leadership

• Translate customer insights into product feedback and roadmap input

• Collaborate with Sales on account strategy and pre-to-post handoffs

• Bring a commercial lens to everything — success should drive revenue

What We’re Looking For

• 7+ years in Customer Success or Account Management with direct revenue ownership (renewals + expansion)

• Proven experience driving growth across complex customers — you’ve worked with enterprise-scale accounts but thrived in environments without established playbooks

• Commercially driven — fluent in value, confident with numbers, and unafraid to upsell

• Builder mindset — energized by ambiguity, bias to action, and excited to define processes from scratch

• Exceptional communicator — credible with execs, clear with teams, collaborative with peers

• Tooling-savvy — you understand modern GTM systems and can help design and implement what works best

• Startup-ready — fast-moving, hands-on, and motivated by impact over hierarchy

The Application Process

1. Submit your CV (no cover letter required)

2. Intro call with our hiring team (30 mins)

3. Customer case study with a panel (45 mins)

4. Meet more of the team (30 mins)

Our Culture

Our culture is intentional — built for speed, ownership, and intensity.
We’re in the race of our lives to reshape one of the largest AI opportunities in the world: email. In this race, there’s only first or last.

We win by:

• Moving fast — every second counts

• Owning outcomes — full autonomy, full accountability

• Never letting it slide — relentlessly striving for excellence

It’s intense — but focused. We remove distractions, support your wellbeing, and reward your impact.