Technical Customer Success Manager

There are billions of calls made every day which will soon be handled by AI. Today 70% of business customer support calls are outsourced to call centers and contact centers. These call centers are looking for a solution that they can build simulate, and deploy voice agents all in one platform. We are building this.

Through YC we grew at 22% week over week and went through demo day with the some of the top revenue in the batch. We already work with the largest contact centers in the world and are looking for people that want to build the future of AI phone support together.

San Francisco, CA - On-site, Full Time

AI voice is the future. We’re building it. Want in?

At some point in the future, every business will answer their phone with voice AI. We are building the platform that makes it possible - and we need someone who can orchestrate complex customer deployments, align teams, and keep everything moving without losing the human touch.

Phonely builds conversational voice AI agents for high volume phone workflows. Our customers use us to qualify leads, book appointments, route calls, and resolve real customer conversations in production. We are growing fast and just getting started.

We are looking for a Technical Customer Success Manager who comes from a project management background and knows how to drive complex, multi-stakeholder work across the finish line. This is not a traditional CSM role. You will be the connective tissue between our customers, our engineering team, and our product team - translating business needs into technical plans and holding everyone accountable to outcomes.

You will own a book of accounts from onboarding through expansion. You will need to get comfortable with APIs, webhooks, and modern SaaS infrastructure - not to write production code, but to understand what is being built and advocate effectively for your customers.

• Customer deployments end-to-end: Own the full lifecycle from kickoff to production, managing scope, timelines, dependencies, and stakeholders throughout
• Cross-functional coordination: Act as the bridge between customers, engineering, and product. Translate requirements in both directions and keep projects unblocked
• Technical onboarding: Lead implementation sessions, configure integrations using APIs and webhooks, and validate workflows before go-live
• Account health and expansion: Track adoption metrics, identify risks early, and build plans to drive deeper usage and growth against defined targets
• Customer voice: Synthesize feedback from the field into clear, structured insights that influence product direction
• Proof-of-concepts: Rapidly prototype and validate new use cases to accelerate customer decision-making
• Documentation and process: Maintain clear project documentation, status updates, and runbooks that keep everyone aligned

• 2+ years in project management, technical account management, or implementation: you have owned complex, multi-stakeholder projects and delivered outcomes against timelines
• Excellent written and verbal communication: you write clearly, present confidently, and can shift between a CTO and a business owner in the same conversation
• Technical fluency: comfortable with APIs, webhooks, and cloud tools at a conceptual and configuration level. You do not need to write the code, but you need to understand it
• Organized and proactive: you track every open item, anticipate blockers before they become problems, and follow through without being chased
• Customer-first mindset: you take genuine ownership of customer outcomes, not just activity metrics
• Comfortable with ambiguity: you thrive when the playbook does not exist yet and can build structure from scratch

• Experience at a SaaS, AI, or developer-tools company
• Background in solutions engineering, technical consulting, or implementation
• You have built something - a company, a product, a project that did not exist before

We are a team of ex-athletes, founders, and builders with low egos and high standards. We take the work seriously without taking ourselves too seriously. On-site in San Francisco - meals covered, quarterly offsites to interesting places (Rocky Mountains, Costa Rica, Indonesia), and meaningful equity in a company that is growing fast. You will work directly with the founders and have real ownership over how we support and grow our customers.

To achieve human-level performance with voice AI agents, we need 99.9% reliability across all verticals. Building a high-performing Voice AI solution requires a combination of key elements:

1. Voice AI Infrastructure: Develop robust systems that can handle real-time conversations seamlessly.
2. API Integrations: Connect with relevant software to ensure smooth interactions.
3. LLM Testing, Simulation, and Evaluation: Validate models under various conditions to ensure accuracy.
4. Performance Monitoring: Continuously track metrics to optimize system performance.
5. Countless Other Tasks: From scaling infrastructure to managing edge cases, achieving this level of reliability is no small feat.

We’ve brought all of these elements together in one place so enterprises can integrate reliable and accurate voice AI into their offerings in minutes, not months.

• 15-min intro call to evaluate fit
• Deep dive into your experience with a team member
• Case study
• Final conversation with leadership

No visa sponsorship. US-based only.

Role: Customer Success

Job Type: Full-time

Experience: 2+ years preferred

Location: San Francisco, CA (on-site only, relocation assistance offered)

Salary: $100K–$170K

Equity: 0.05%–0.15%