William Rainaud

Head of Customer Success Engineering

I help enterprise engineering organizations successfully adopt developer platforms and DevOps tooling. Technical leader. Customer advocate. Builder.

Currently at JetBrains · Leading North American Customer Success Engineering

The Setlist

A look at the work I've done across enterprise sales engineering, customer success, and developer platforms.

I'm a Customer Success Engineering leader with 8+ years of experience working at the intersection of technical sales, developer tooling, and enterprise platform adoption. I've partnered with engineering leaders at Fortune 500 companies to drive long-term platform success — from initial discovery through multi-year retention and expansion.

I've led complex enterprise engagements, designed and executed Proof-of-Concept programs, and represented companies at major developer conferences including AWS re:Invent, Google DevNext, and Gartner AIBS Summit.

Companies I've Worked At
JetBrains Grafana Labs TechXtend
What I'm Known For
  • Enterprise developer platform adoption & retention
  • Technical discovery and solution architecture
  • Proof-of-Concept design & execution
  • Cross-functional partnership with Sales, Product & Engineering
  • Performance testing platforms (k6 / Grafana)
  • Team leadership and Customer Success org scaling
How I Work

Close collaboration with Account Executives and Sales teams. Deep technical engagement with engineering organizations. Strong feedback loop with Product. Focus on long-term customer value, measurable outcomes, and trust.

Experience

Head of Customer Success Engineering — North America

JetBrains | March 2026 – Present

Lead the NA Customer Success Engineering org for enterprise adoption, retention, and expansion of JetBrains developer tooling. Manage and mentor CSEs, define regional strategy, and serve as technical executive partner for strategic accounts.

Solutions Engineer

JetBrains | December 2024 – March 2026

Led enterprise technical discovery, POC engagements, and product demos. Contributed to 220% YoY quota attainment in 2025. Represented JetBrains at AWS re:Invent, Google DevNext, Gartner AIBS, DeveloperWeek 2026, DPE Summit, and IntelliJ Gathering.

k6 Sales Specialist

Grafana Labs | March 2022 – July 2024

Technical SME for performance testing and observability. Led enterprise POCs and supported multi-million-dollar deals alongside account executives.

Inside Account Executive

Grafana Labs | November 2020 – March 2022

Achieved 100% ARR growth in 2021. Guided customers through evaluation, onboarding, and long-term adoption.

erwin Sales Specialist

TechXtend | August 2017 – November 2020

Delivered enterprise data architecture and governance solutions to C-level buyers. Achieved 42% revenue growth for the erwin product line in 2018 (TechXtend MVP Award).

Projects

Applications and tools built to explore ideas and solve real problems.

Production

MICA — Monmouth Inventory Control Application

A full-stack web app for managing inventory tracking and reporting workflows, built with a team at Monmouth University.

GitHub

Portfolio Site

Personal portfolio site (this one) built as a single-file HTML/CSS/JS artifact.

Education

M.S. Information Systems

Monmouth University, 2019–2022

Full-Stack Web Development Certificate

Rutgers University, 2017–2018
(HTML, CSS, JavaScript, SQL)

B.A. Photography

Monmouth University, 2011–2014

Get In Touch

Whether you're exploring technical leadership partnerships, enterprise developer platform strategy, or just want to connect — feel free to reach out.