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Senior Backend Engineer (Python)

Remote, Ukraine - Remote +1·Full-time·Added over a year ago (last checked 6 Nov)

Kollectiv AI

1 open role

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Our summary

Work mode: Remote (Ukraine - Remote / Europe - Remote)
Contract: Full-time
English: Required
Experience: 5+ years

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Skills

Nice to have

Requirements

What we're looking for

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 have

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

Pay & benefits

What you'll get

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

The role

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.

What you'll do

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

About Kollectiv AI

Kollectiv AI is a healthcare technology company that provides an AI platform for dental revenue cycle management, automating processes from insurance verification to payment posting. The company operates in the healthcare technology sector, focusing on improving efficiency and accuracy for dental billing teams.

Kollectiv AI's presence in Spain is indicated by a current opening for a Senior Backend Engineer (Python), suggesting the company is building an engineering team in the country. The role is based in Spain, and the company's careers page is hosted on a third-party platform, indicating an active recruitment effort for international talent.

Industry: Healthcare Technology

Good to know if you are moving

The company is hiring a Senior Backend Engineer (Python) in Spain, indicating a need for backend engineering talent.
Kollectiv AI operates in the healthcare technology sector, specifically dental revenue cycle management, which may appeal to professionals with experience in healthcare or fintech.
The careers page is hosted on a third-party platform (gem.com), which may indicate a streamlined application process.
The company's official website describes its platform as automating dental billing processes, suggesting a product-focused engineering environment.

In their own words

About the company & team

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.

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.

All open roles at Kollectiv AI