Senior software engineer (early stage startup) + equity

About the company:

CostCare AI is a Ukrainian B2B SaaS startup building AI CRM with our AI sales agent to answer client inquiries, and making autonomous actions.

We already have a proof — our AI sales agent lifting 60% of workforce load for our clients! And there is still plenty room to improve. We also have rased $500,000 of angel investment for our business.

Our vision is to increase our agent self learning capabilities, add more capabilities and make interaction with Agent inside platform to feel human like. Also add to platform more agentic functions to bring interaction with CRM to next level.

What you’ll be working on:

We have 3 main areas in our application:

AI core: Improve the quality of our AI sales agent in platform. This comes both to onboarding clients and improve already launched AI for a client. Our main metric here is autonomous resolution rate. Here you would work closely with existing clients, triage problems, and you will see the result of you work immediately in ongoing chats.

Conversation channels: Support and extend existing (Instagram, whatsapp). Add more channels( like telegram, viber, etc)

Platform: we just launched our platform. we want to make it great place to interact with customers, AI and existing data.

Tech Stack:

• Backend: Python, FastAPI, asyncio, LiveKit Agents, Langchain
• AI/LLM:, OpenAI, Anthropic, Gemini, ElevenLabs, Deepgram, Cartesia
• Telephony: Twilio, LiveKit
• Database: MongoDB, Qdrant, S3, Redis
• Infra: K8S, AWS, DigitalOcean, GitHub actions

The product is still in an early stage, so you’ll have the opportunity to influence the tech stack and help shape the architecture as we grow.

We’re looking for someone who:

• Understands system design, the pros and cons of different approaches, and can deliver from idea to production.
• Communicates clearly and takes ownership.
• Has a product mindset — solves real problems, not just code tickets.
• Can work independently and isn’t afraid to ask questions, make decisions, or challenge ideas.

Our Values:

• Mutual Respect: We’re building a healthy, collaborative environment where people feel safe, supported, and inspired to grow together.
• Customer Obsession: We believe our unfair advantage is truly caring about our customers and solving their real problems.
• Trust & Responsibility: We trust each other to take ownership, and in return, we expect them to be responsible and keep growing.
• Honesty: Mistakes happen — what matters is having the courage to own them, learn from them, and solve things together.
• Ambition: We’re aiming high — to build a billion-dollar company and lead the way in AI agent technology.

Why join us?

• Get equity in business
• You’ll join early, shape core systems, and make a real impact.
• Zero bureaucracy, flexible hours, fully remote.
• Paid time off (20 vacation + 10 sick days).
• Transparent, respectful, and feedback-driven team.
• We’re ambitious but grounded — aiming to build something useful and lasting.
  
  

Let’s talk if this sounds interesting — we’d love to hear from you!