---
title: 'Senior Backend Engineer (Python) at Kollectiv.ai'
canonical: 'https://feeny.ai/job/senior-backend-engineer-python-kollectiv-ai-ukraine-z5b47mqqc8y5'
type: 'job'
last_seen: '2026-09-08'
---

# Senior Backend Engineer (Python) at Kollectiv.ai

- **Company:** Kollectiv.ai
- **Location:** Ukraine
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2025-10-22
- **Last confirmed live:** 2026-09-08
- **Apply:** https://jobs.gem.com/kollectiv-ai/am9icG9zdDrWFzLuPYuS57WPfu7ayje4

## Job description

As our Senior Backend Engineer, you’ll design and build the backend infrastructure that supports high-throughput, reliable, and secure AI agent workflows. You’ll work cross-functionally with ML engineers and data scientists to operationalize models at scale.

## Key Responsibilities

Architect and implement scalable APIs, microservices, and event-driven systems to power ML pipelines and agent orchestration Design efficient data modeling, ETL, and persistent storage suited for high-volume, real-time agent data Optimize backend performance and ensure system stability under heavy concurrent load Collaborate closely with founders and ML teams to deliver end-to-end agent features Establish CI/CD pipelines, monitoring frameworks, and enforce backend security best practices Mentor junior engineers and contribute to team culture and best practices

## Requirements

5+ years designing, implementing, and maintaining backend systems in Python Experience building distributed, scalable services with microservices or serverless architectures Strong grasp of relational and NoSQL databases, message queues (e.g., Kafka), and ETL patterns Proven track record in API design (REST/gRPC), authentication, and reliable asynchronous processing Familiarity with containerization (Docker, Kubernetes) and observability tools (Prometheus, Grafana)

Nice to Haves

Prior experience launching AI products or backend systems for ML/agent-driven applications Knowledge of LLM APIs, prompt pipelines, and agent orchestration Familiarity with cloud-native tools (AWS Lambda, S3, DynamoDB, GCP/Azure equivalents)

## Experience in startup or early-stage environments

## Why You Should Join

Competitive equity & pay - get in early and own what you build. Work closely with experienced founders with a proven startup track record. Move fast, ship fast - no corporate bureaucracy. Shape the AI revolution in healthcare - massive market, untapped potential

## About Kollectiv, Inc

We’re transforming front office operations for healthcare practices through AI-first automation. Think agentic AI that streamlines insurance verification, claim management, pre-authorization, denials management, coding and reviewing notes, and every mundane, repetitive task that bogs down practice staff. Our mission? Free up healthcare professionals to focus on what matters most: their patients.

Our founding team has built a couple of unicorns Andrey Akselrod - Founder/CTO at Smartling, Board Member/CTO at People.ai. Coffee & Kettlebells. Sasha Rohachova - Founder at Inkhunter (YC S18), PM at Pinterest (Led AI/ML/CV/AR innovation lab). Competitive Free-diving.

We’re moving fast and need an engineer who thrives in early-stage chaos and loves shipping quickly. If you want to own technical decisions, build 0→1, and shape the future of AI in healthcare, this is your role.

## About Kollectiv.ai

## Company Overview
- **One-liner**: Kollectiv.ai builds agentic AI that automates front-office operations for healthcare practices, starting with dental revenue cycle management.
- **Entity Type**: Private (Early Stage)
- **Headquarters**: Fremont, California, USA
- **Founded**: 2025
- **Founders**: Andrey Akselrod (Co-founder/CTO) and Sasha Rohachova (Co-founder)

## Core Business
- **Primary industry**: Healthcare IT (dental revenue cycle management)
- **Target customers**: Dental practices and large dental groups (B2B)
- **Mission or purpose**: Free up healthcare professionals to focus on patients by automating repetitive administrative tasks

## Products & Services
- **Kollectiv AI Platform**: Agentic AI that autonomously logs into insurance portals, verifies benefits, checks claim statuses, identifies denials, writes appeals, posts payments, and reconciles accounts — all built with HIPAA compliance, encryption, audit trails, and human-in-the-loop oversight.

## Market Standing
- **Valuation/Market Cap**: Not disclosed
- **Key Metric**: Partnerships covering 100+ dental locations, including two dental groups with $30–50 million in annual revenue each; pilot results show faster and more precise performance than human teams.
- **Notable Investors/Partners**: Not publicly available
- **Growth Signals**: Signed multiple dental group partnerships within first year; focus on scaling from dozens to hundreds of locations; metric-driven approach tracking “interventions” (how often AI requires human takeover).

## Competitive Advantages
- **True agentic AI** that performs actions (e.g., logging into portals, filing claims) rather than just suggesting next steps
- **HIPAA-first architecture** with encryption, least-privilege access, audit trails, and explainability built in from day one
- **Proven founding team** with unicorn-building experience (Smartling, People.ai, Inkhunter, Pinterest AI/ML)

## Strategic Focus
- Achieve true autonomy for core revenue cycle management workflows with minimal human intervention
- Scale the platform across hundreds of dental locations, delivering measurable outcomes
- Expand beyond RCM into the full administrative engine of dental practices

## Why Work Here
- **Early-stage impact**: Founding engineers and early hires shape both product and company culture
- **Experienced founders**: Andrey Akselrod (CTO at Smartling, board/CTO at People.ai) and Sasha Rohachova (founder of Inkhunter, PM at Pinterest leading AI/ML/CV/AR)
- **Remote/hybrid options**: Some roles are on-site in San Francisco (Founding Engineer), others allow remote within Europe/Ukraine (Senior Backend Engineer)
- **Fast-paced, low bureaucracy**: “Move fast, ship fast — no corporate bureaucracy”
- **Equity and competitive pay**: Early-stage equity upside
- **Mission-driven**: Work on AI that directly improves patient care by reducing administrative burden

## Sources
1. [gem.com – Kollectiv.ai Careers](https://jobs.gem.com/kollectiv-ai)
2. [linkedin.com – Persimmon (Kollectiv.ai) Company Page](https://linkedin.com/company/persimmonhq)
3. [groco.com – Kollectiv AI: Building the Administrative Engine of the Future](https://groco.com/article/kollectiv-ai/)
4. [startup.jobs – Kollectiv.ai Company Jobs](https://startup.jobs/company/kollectivai)
5. [startup.jobs – Founding Engineer Job Posting](https://startup.jobs/founding-engineer-agents-backend-ml-kollectivai-6405470)

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- [Senior Backend Engineer (Python)](https://feeny.ai/job/senior-backend-engineer-python-oura-united-states-wavx25r636fg) — United States