Vacancies
Senior Backend Engineer
up to
6000 $
Country — Estonia
Salary — 4-6 K USD
Working hours — European standard working hours, GTM+3
Most sales tools help you send emails. We’re building something different. We’re creating autonomous AI agents that can:
- Find the right prospects
- Generate highly personalized outreach
- Run conversations
- And book meetings
- All without human involvement.
Why this is interesting:
A lot of AI products stop at “generate text.” We’re focused on outcomes.
That means solving problems like:
- How do you generate messages that actually get replies?
- How do you evaluate and improve agent performance over time?
- How do you orchestrate millions of AI-driven interactions reliably?
- How do you combine structured data + LLMs in a way that scales?
If you enjoy working at the intersection of systems + AI + real-world feedback loops, this will feel like a playground.
What you’ll be working on
- You won’t be maintaining legacy systems.
You’ll be:
- Designing and building core backend systems that power our AI agents
- Creating APIs and services that handle high-scale, real-time workflows
- Working with queues (Kafka / SQS / RabbitMQ) to orchestrate async systems
- Thinking deeply about performance, cost, and reliability in AI pipelines
- Shipping features end-to-end with a small, senior team
The team
- We’re a small group of experienced builders. We move quickly, care about quality, and avoid unnecessary process.
- No layers of management.
- No long planning cycles.
- Lots of ownership and autonomy.
What we’re looking for
- 5+ years of backend engineering experience
- Strong system design fundamentals
- Experience with distributed systems and async processing
- Familiarity with relational and/or document databases
- Clear communicator, high ownership
Why join
- You’ll work on a product where the output is measurable (meetings booked, revenue generated)
- You’ll have real ownership from day one
- You’ll be early in building a new category (AI sales agents)
- You’ll grow as fast as we do