Maksymilian Malecki

• I lead a team of 11 engineers on a polyglot InsurTech platform serving brokers across Europe — quote management, calculation engine, core platform, and PSD2-compliant payment services
• I designed and shipped a production RAG system for querying insurance policy documents — iterated through multiple retrieval architectures to find the right balance of accuracy and cost; the final in-house Python solution met the regulatory accuracy bar for the broker domain
• I built Go microservices across the platform (API layer, access control, shared identity); integrated the platform with multiple insurers — including legacy SOAP APIs still in production
• I led AWS cost optimization through query profiling (pg_stat_statements), targeted indexing, and instance right-sizing — keeping infrastructure costs flat while data volume grew
• I maintain compliance with GDPR, multi-country regulatory requirements, and strict auditability across all AI systems

Tech: Go, PHP, Python, React, PostgreSQL, Elasticsearch, Qdrant, AWS Bedrock, Kubernetes

• I worked in the checkout team at a multi-million user security platform — maintaining stability and uptime of the critical purchase flow
• I shipped A/B experiments on the checkout process with analytics via Google Cloud BigQuery
• I handled cross-product integrations with other NordSecurity services

Tech: Slim Framework, Google Cloud BigQuery, RabbitMQ, PHPUnit

• I improved Developer Experience across engineering teams
• I updated internal cross-team packages

Tech: Symfony 5-6, PostgreSQL, RabbitMQ

Project: e-learning platform (1 year)

• I pivoted into Go and Python — wrote my first production Go microservices in a cloud-native stack
• I migrated the content authorization service from Kotlin to Go and built a Python-based dev-ex tool to orchestrate local container environments

Project: fintech training platform (3 years)

• I was the core architect of the PHP 8.1 microservices migration — moving from monolith to distributed services
• I built and owned the user management microservice and led the security services layer
• I drove the PHP 7 → 8.1 upgrade across the whole platform

• I made the architectural call to build a PWA instead of native mobile apps — faster to ship, lower cost, single codebase
• I migrated the frontend from Angular.js to React and split the PHP monolith into Node.js and PHP microservices
• I migrated from a single VPS to Kubernetes on GCP and re-architected big cron jobs for multi-threaded processing

• Loyalty platform: I refactored the codebase to Hexagonal Architecture and introduced Kubernetes
• E-commerce platform: I maintained OroCommerce and delivered new features

• I developed features including async ElasticSearch re-indexation via RabbitMQ
• I load-tested releases using Scala and Gatling on AWS

• I led the frontend team (3 developers + 1 QA)
• I migrated multi-gigabyte data from MongoDB to MySQL
• I was responsible for deployments (Ansible)
• I migrated the monolith app to microservices
• I migrated the codebase from Symfony 2.8 to 3.0

Earlier Career (2007-2015)