Open to opportunities

Martin Horvath

@martinhorvath

Full Stack Engineer building cloud-native microservices and data platforms with Python, React, and event-driven architectures.

Slovakia

Message

What I'm looking for

I’m looking for a role where I can own cloud-native microservices and data pipelines, build event-driven architectures, and improve reliability and performance—while mentoring engineers and delivering measurable business outcomes.

I’m a Full Stack Developer with 10+ years of experience designing and delivering high-performance applications across fintech, SaaS, and analytics. I build scalable platforms with Python (Django, Flask, FastAPI), React/Next.js, and cloud-native microservices—grounded in GDPR-compliant systems and event-driven architectures.

My recent work includes migrating Airflow versions and refactoring legacy pipelines, replacing duplicated notification logic, and standardizing authorization and permission checks. I also integrate AI/ML models (e.g., TensorFlow credit scoring) and help teams improve reliability, observability, and long-term architecture while mentoring engineers.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Incubeta

Mar 2025 - Present (1 year 1 month)

Led the migration of Airflow from v2 to v3, addressing DAG parsing and executor behavior to stabilize scheduled runs. Refactored legacy pipelines, replaced Fivetran ingestion with Datalaksa, and built a centralized NotificationService with retry/fallback logic while standardizing Auth0-based authorization.

Python Apache Airflow BigQuery Data Ingestion Auth0 REST APIs DAGs

Full Stack Engineer

Klarna

Jan 2024 - Feb 2025 (1 year 1 month)

Built FastAPI and Django payment microservices using async processing and transaction-safe patterns supporting 1M+ monthly transactions. Improved checkout conversion by 12% and reduced fraud-related chargebacks by 15% through idempotency-based payment APIs, Kafka event-driven billing, and AI credit scoring integration.

fastAPI Django Kafka React Next.js Redis Terraform TensorFlow

Full Stack Engineer

Edge Network — The Supercloud

Jan 2021 - Dec 2023 (2 years 11 months)

Developed multi-tenant Django/React microservices with strict tenant isolation and implemented GraphQL APIs by eliminating N+1 query issues. Migrated to Kubernetes, built Kafka-based real-time event pipelines, and applied ML predictive scaling, reducing infrastructure costs by 18%, event processing latency by 35%, and mean time to detect issues by 40%.

Django React GraphQL Kubernetes Terraform Kafka Predictive ML Scaling Datadog Prometheus

Full Stack Developer

Hotjar

Sep 2017 - Dec 2020 (3 years 3 months)

Built ERP modules in Ruby on Rails for inventory, supply chain, and financial reporting supporting 3,000+ employees. Implemented Python analytics pipelines and AI anomaly detection, reducing reporting latency by 50%, downtime by 8%, and manual release effort by 60% using Docker and Jenkins.

Ruby on Rails Python React scikit learn PostgreSQL Redis Docker Jenkins ERP Development

Software Developer

WEZEO

Jul 2015 - Aug 2017 (2 years 1 month)

Developed Django applications for finance and healthcare clients with strict validation and compliance requirements, and built REST APIs for mobile apps with backward compatibility. Containerized and deployed services on AWS (EC2/RDS), optimizing SQL access patterns to improve slow endpoint performance by 25% while strengthening CI/CD with Jenkins and GitLab CI.