Founding SDR

Windmill is an open-source developer platform (16k+ GitHub stars, Paris-based) that turns scripts into workflows, internal tools, and full-stack apps. It's the sweet spot between Retool and Temporal - we compete with both, plus Airflow and n8n, and we're winning on DX and performance.

How it works: write scripts in Python, TypeScript, Go, Bash, Rust, SQL, etc. Windmill analyzes their parameters and auto-generates UIs, turning each script into a standalone app or a reusable no-code module. Chain scripts into flows (branching, parallelism, retries, error handling) to build powerful workflows. Trigger anything via cron, webhook, auto-generated UI, or custom dashboards built with our app builder. Under the hood: an all-in-one queue/worker runtime, script editor, flow builder, secret manager, OAuth platform, with enterprise-grade permissions, groups, and audit logs.

The insight: no-code tools are intuitive but not extensible. Writing code is only 10% of the work - then you deal with credentials, CI/CD, permissions, UIs, error handling. Windmill handles all of that so developers focus on the logic that matters.

Stack: Rust / TypeScript + Svelte / PostgreSQL. Easy to deploy, works out of the box, replaces entire categories of internal infra.

Founded by Ruben Fiszel (ex-Palantir), who saw the need for enterprise workflow infrastructure but realized it had to be open-source, developer-focused, and built for best-in-class performance and DX - not another Spark wrapper.

300+ enterprise customers, 3M ARR, profitable. Tier 1 investors (YC, Google, Bessemer). Team of 10 engineers. Our customers run between 2 and 600 workers, 1 to +1,000 seats.

Revenue model: the core platform is fully open-source with thousands of individuals and companies using it for free. ~5% of features (enterprise-scoped: SSO, audit logs, dedicated workers, etc.) live in a private repository that companies pay to access, along with premium support. All revenue to date has been generated with zero outbound sales and modest marketing - purely inbound and product-led.

First dedicated sales hire. Build the outbound motion from the ground up on top of a product that already sells itself - $3M ARR with zero outbound to date. This is a 50/50 cold call and email sequencing role focused on getting the right people into demos or onto the open-source product. Hit your number in year one and you write the playbook for the next SDR, hire them, and grow into leading the team.

What you'll do

• Outbound, every day. ~50% cold calls, ~50% email sequencing. Target platform teams, DevOps leads, and engineering managers at companies already using Windmill's open-source or evaluating it against competitors.
• Book the right meetings. Success is a booked demo with the actual stakeholders, or a qualified team starting an OSS evaluation with a clear path to commercial. Volume matters, but quality of account and seniority of contact matter more.
• Build the top of funnel from zero. Account lists, sequences, call scripts, objection handling, qualification criteria - none of this exists yet. You'll build it.
• Run competitive displacement. Identify accounts where we have developer champions using Windmill OSS against competitors and work them top-down.
• Set up the CRM and reporting. Deal stages, pipeline hygiene, conversion metrics from cold touch to booked meeting to qualified opportunity.
• Close the feedback loop. What objections come up on cold calls, which messages land in sequences, which segments respond - bring it back to product and marketing.

Year one target: bookings that convert to $1M+ in new ARR. Hit it, and the next chapter is hiring and leading the SDR team - writing the playbook, ramping the next hire, and growing into the function lead.

Who we're looking for

• Devtool / developer platform background is essential. You've prospected to or worked closely with engineering teams. You understand what developers care about, what "open-core" means, and how PLG and outbound coexist.
• Comfortable on the phone. This is a real cold-call job, not LinkedIn-only outbound. Half your day is dials.
• Strong technical fluency. You can read our docs, hold a credible conversation with a platform engineer, and know when to bring in an SE versus handle it yourself.
• 1–4 years in SDR/BDR, sales, or developer relations with a commercial angle at a B2B SaaS or devtool company. Founding-SDR experience or being the first outbound hire somewhere is a strong signal.
• Experience prospecting into large enterprise (public companies, Fortune 500) is a big plus. Our target buyers sit at companies with serious compliance, procurement, and security requirements.
• Scrappy, autonomous, comfortable building from zero. This is a founding role, not seat #25 in a 50-person SDR org. No SDR manager, no enablement team, no pre-built sequences - you build it.
• US experience strongly preferred - American applicants or candidates with extensive experience selling into US companies. The vast majority of our pipeline is US-based, which means US hours on the phone.
• Fluent in English; French or German is a plus for European accounts.

Example projects in your first 3 months

• Build the outbound playbook targeting platform teams at mid-market and enterprise companies already running Windmill's open-source
• Run a focused competitive displacement campaign against incumbents at accounts where we have developer champions
• Set up the CRM, sequences, dashboards, and weekly pipeline reporting
• Book the first cohort of qualified demos that the founders close - learn the product and the buyer by feeding the top of the funnel

Offer details

• Location: France or US
• Compensation: base (location-dependent) + commission on booked meetings that convert to closed revenue
• Growth path: hit year-one target → hire and lead the next SDRs → grow into SDR team lead

backend: Rust - stateless API servers + workers pulling jobs from a Postgres queue. Optimized for high-throughput job execution (~50ms overhead per job).

frontend: Svelte 5

db: Postgres as the single source of truth (job queue, state, metadata). Compatible with Aurora, Cloud SQL, Neon.

sandboxing: nsjail + PID namespace isolation. We run untrusted user code in 20+ languages (Bun, Python, Go, Bash, PowerShell, PHP, C#, Java, Ansible…) safely on shared workers.

deploy: Docker / Helm. Runs on AWS, GCP, Azure, Hetzner, etc. Self-hosted by large enterprises.

CV + a short note on your devtool/sales experience and how you'd approach Windmill's enterprise motion (keep it genuine — a two-liner beats an AI-generated paragraph) → jobs@windmill.dev (subject: "Founding Enterprise Sales").

1. Apply here or email jobs@windmill.dev
2. 30 min interview with founder
3. Case study / mock sales scenario
4. You're hired