Open to opportunities

Kamil Kamil

@kamilhajduk

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Senior software engineer (backend leaning)

Poland

Message

What I'm looking for

I’m looking for a backend role building event-driven microservices with strong observability and cloud-native delivery. I want to work on clean, maintainable systems—ideally with data pipelines or AI-driven products—where I can own reliability end to end.

I’m a backend-focused Python developer with 7+ years of experience building event-driven microservices on cloud platforms. I’m especially drawn to distributed systems that deliver reliability, clarity, and measurable outcomes through strong observability.

At Complexio, I’m building an AI-powered knowledge graph product backed by Neo4j. I integrate company-wide context from Slack, GitHub, Notion, Linear, and email into a conversational chatbot interface, and I also maintain a Python middleware library powering 20+ microservices.

I’ve designed idempotent database migration scripts and batch workflows to ensure zero data loss across production environments. I implement end-to-end observability with Datadog metrics, dashboards, and alerting across a 20+ service distributed architecture, and I contribute to CI/CD pipelines and Kubernetes deployments on Azure AKS.

Previously, at AI Clearing, I led backend initiatives for mobile and web applications using FastAPI, PostgreSQL, Docker, and RabbitMQ, including secure authentication with Keycloak (OAuth2/OIDC). Earlier roles at Dealavo and DXC Technology shaped my engineering discipline around data pipeline performance, third-party integrations at scale, and thorough testing with Pytest and Unittest—always with clean, maintainable code.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Complexio

Sep 2025 - Present (8 months)

Built an AI-powered knowledge graph product backed by Neo4j, ingesting company-wide context from Slack, GitHub, Notion, Linear, and email into a conversational chatbot interface. Delivered production-grade microservices infrastructure with company-wide middleware, idempotent migrations, and observability across a 20+ service architecture.

Neo4j fastAPI Python Microservices Event Driven Architecture PostgreSQL Datadog Kubernetes CI CD

Python Developer

AI Clearing

Aug 2023 - Aug 2025 (2 years)

Led backend development for multiple mobile and web applications using FastAPI, PostgreSQL, Docker, and RabbitMQ, enabling scalable real-time progress and quality monitoring. Optimized data pipelines and report generation workflows, reducing processing time from over 24 hours to under 1 hour.

Python fastAPI PostgreSQL RabbitMQ Docker Data Pipelines

Python Developer

Dealavo

Jun 2021 - Jul 2023 (2 years 1 month)

Developed and maintained a distributed system processing millions of pricing offers daily across 30+ international markets. Built integrations adopted by 50%+ of clients and created automated data cleaning, aggregation, and reporting for data-driven pricing decisions.

Python SQL Distributed Systems Data Cleaning Aggregation CI CD

Junior Programmer

DXC Technology

Jul 2018 - Dec 2019 (1 year 5 months)

Developed automated Python data quality tests and built CI/CD pipelines using Azure DevOps. Contributed to multiple projects spanning frontend applications and big data systems while working across the full software development lifecycle in an agile team.

Python Automated Testing CI CD Azure DevOps Agile Scrum Data Quality Big Data Linux