Director of Engineering (Founding Team) — AI Agents — VC Backed at Salestools AI

Meet Salestools

Salestools is rewriting how revenue organizations work. We’re building an operating system of autonomous AI Sales Agents that handle prospecting, insights, outreach, and follow-up conversations with superhuman precision.

Our first agent, Olivia, already drives $10M+ in pipeline every month for customers—and we’re just getting started. We’re not improving sales tools; we’re replacing broken, manual workflows with AI that sells better than humans.

We exist to make salespeople radically more productive and companies dramatically more successful.

The Team

We’re a small, focused group building from our AI Hub in Bucharest. Every engineer here has an outsized impact because there are no side projects and no distractions—only the mission.

We move fast, argue with data, and ship code that matters. If you’ve ever wanted to own an engineering mission at the ground floor of a category-defining company, keep reading.

About the Role

As our Founding Engineering Operator (think “Director of Engineering” without the vanity title), you’ll own our platform end-to-end—stability, speed, scale, and security. You’ll ship production code weekly, translate customer feedback into features in days, and build a team around the standards you set.

You’ll work directly with the CRO, CEO, and Head of AI, shaping the product and defining the future of AI-driven sales.

What You’ll Do

• Architect and scale LangGraph-based agent infrastructure for high-concurrency, low-latency performance.
• Design for 99.99% uptime, multi-region deployment, and sub-100 ms agent response times.
• Lead backend and data platform development—ElasticSearch vectors, scraping, signal enrichment, AI-agent orchestration.
• Turn customer feedback into production features in <7 days.
• Recruit, mentor, and grow a Bucharest engineering team from 0 → 25+, embedding a culture of velocity, ownership, and uncompromising quality.
• Tie every engineering choice to measurable outcomes: lower latency, higher adoption, ARR impact.

Who You Are

• 5+ years owning production systems end-to-end.
• Deep Python expertise (async patterns, clean architecture, microservices).
• Skilled with AWS/GCP/Hetzner, vector databases (ElasticSearch, Pinecone), and event-driven systems.
• Comfortable designing fault-tolerant architectures and balancing cost-performance.
• Obsessed with uptime, telemetry, logs, and user experience speed.
• Collaborative, readable-code advocate—no lone wolves.
• Think like an owner, not an employee.

You Should Not Apply If…

• You’re juggling multiple jobs or consulting gigs.
• You prefer managing over building.
• You need consensus to act.
• You need a fancy title to stay motivated.

Performance Expectations

• 30 days — Understand every line of code; ship 2+ major fixes or improvements.
• 60 days — Telemetry and observability live across infrastructure.
• 90 days — Maintain <100 ms latency for 90%+ of interactions under 10× load.
• 6 months — Build a 3–5 person core team under your leadership.
• 12 months — Lead 10+ projects from spec to launch, doubling reliability or revenue impact.

Why Salestools?

• 💸 Competitive salary + meaningful founding equity—grow as the company grows.
• 🧠 A culture of engineering excellence, not politics.
• 🏥 Private health insurance.
• ⚙️ Your setup, your call—gear and workflow you need.
• 🌍 A global product already creating massive customer value.
• 🧨 Build alongside the CRO and founders—you’re defining the playbook, not just executing it.

Where You’ll Work

📍 Bucharest, onsite, full-time.
We believe deep work, fast iteration, and strong culture happen in the same room, not on Slack.

Our Values

• Everything Is Possible – We approach problems as solvable, no matter the scale. Constraints are sparks for creativity, not excuses.
• Customer Value Above All – Success isn’t logos or headlines—it’s a product in a customer’s hands creating measurable revenue impact. If our agents don’t drive value, we haven’t succeeded.
• Build, Don’t Debate – We ship, test, and learn fast. Ideas live or die by their results in production, not by PowerPoint.
• Ownership Mindset – Every person here acts like a founder. You own outcomes, not tasks. You raise the bar, not the noise.
• High Standards, High Velocity – Speed matters, but never at the expense of quality. We move quickly and keep raising the bar.
• Radical Candor & Respect – Feedback is direct and fast because we care about getting it right, not about politeness theater. Respect is non-negotiable.
• Win Together – We celebrate team wins loudly and fix problems quietly, side-by-side.

Our Approach to AI

• AI as an Extension of Us – We don’t “use tools”; we integrate AI into every workflow. It’s second nature—debugging, research, writing, architecture, everything.
• Agents With Purpose – Every agent we build exists to make customers more productive and successful—not to chase hype.
• Shared Learning Culture – Demo days, open workflows, and constant knowledge-sharing mean every breakthrough spreads fast.
• Bias for Real-World Impact – We test in live environments, measure outcomes in ARR, and iterate relentlessly. Theory is useful; customer value is the proof.
• Shape the Future – We’re not here to slightly improve the status quo. We’re here to rewire revenue operations for decades to come.

About the Role

We’re not hiring a “Director of Engineering” with a desk full of meetings. We’re hiring a Founding Engineering Operator to help create an entirely new category: Autonomous Revenue Agents.

Olivia—the AI agent you’ll scale—isn’t another sales tool. She’s becoming the revenue OS for every company, a stack-agnostic teammate who plugs into any CRM or outreach platform, senses competitor churn before anyone else, and turns every customer touchpoint into pipeline, retention, or upsell.

Your mission: design and scale the infrastructure that makes Olivia ubiquitous. You’ll build for mass adoption across the enterprise and beyond, so any revenue team—from scrappy startup to Fortune 500—can bring their own stack, press “go,” and watch Olivia drive results.

You’ll work shoulder-to-shoulder with the CRO, CEO, and Head of AI, shaping the product and the future of AI-driven sales itself. This is ground-floor, Blue-Ocean engineering—success here means reshaping how the world sells.

What You’ll Do

• Architect & Scale: Build LangGraph-based infrastructure that handles millions of concurrent, low-latency interactions (<100 ms).
• Design for Reliability: Deliver 99.99% uptime, multi-region deployment, and seamless failover.
• Create the Stack-Agnostic Layer: Make Olivia integrate anywhere—no rip-and-replace.
• Turn Signals Into Action: Lead backend & data platform development (ElasticSearch vectors, scraping, signal enrichment, orchestration) to detect opportunities—like competitor churn—and convert them into pipeline.
• Ship at Lightning Speed: Translate customer feedback into production features within 7 days, not quarters.
• Build the Culture: Recruit, mentor, and grow Bucharest’s engineering team from 0 → 25+, embedding velocity, ownership, and uncompromising quality.
• Measure What Matters: Tie every engineering choice directly to business outcomes—reduced latency, higher adoption, and ARR impact.