Paweł Kołodziejczyk

Senior Engineer & Technical Educator | Kubernetes · Observability · Distributed Systems · Cloud-Native

Cracow Metropolitan Area

About

Engineer and educator at the intersection of distributed systems, reliability, and developer enablement. I build platforms — and the people who operate them. Over the past 5 years I've designed and delivered technical training to 1,300+ engineers across Kubernetes, observability, and cloud-native systems. I've seen firsthand what separates teams that operate with confidence from those that don't — and I bring that lens to everything I build. In practice that means: distributed systems in production at scale, Kubernetes, observability (Prometheus, OpenTelemetry, tracing), traffic management stacks, and cloud migrations that actually stick. Helping people grow is not a side effect of my work — it's the goal. /* null pointers should be destroyed */

Experience

  • Senior Software Engineer at LeadIQ
    Jul 2023 - Present · 3 yrs

    Introduced Scala 3 to the engineering team, leading the migration and establishing new patterns and conventions across the codebase Built backend services powering sales prospecting workflows, serving both internal teams and the core product Led internal Kubernetes knowledge-sharing sessions, upskilling the engineering team on container orchestration and production operations Scala, Scala3, ZIO, GraphQL, K8s, Docker, Microservices, Kafka, Postgres, Mongo, Datadog

  • Comarch (7 yrs 5 mos)
    • Technical Trainer
      Jun 2020 - Present · 6 yrs 1 mo

      Designed and delivered multi-level technical curricula to 1300+ engineers across Kubernetes (intro -> advanced with Istio, OpenTelemetry, Prometheus), containerisation, Ansible, and cloud-native systems Built courses from scratch - including hands-on labs, assessments, and progressive skill tracks - covering both theory and production-grade practices High repeat engagement: many participants returned for subsequent courses and advanced levels https://www.comarch.pl/szkolenia/rozwiazania-chmurowe/zarzadzanie-kontenerami-1/kubernetes-poziom-podstawowy/

    • Cloud Architect / Senior Software Engineer
      Feb 2019 - Feb 2021 · 2 yrs 1 mo

      Core member of the R&D cloud team, supporting migration of multiple internal teams to cloud-native architectures Drove adoption of 12-factor app principles, microservices patterns, and well-formed API design across the organisation Introduced Domain-Driven Design concepts to engineering teams Organised and spoke at internal meetups, building engineering culture around distributed systems and cloud-native practices Kubernetes, Docker, Prometheus, Grafana, Kafka, Postgres, Scala, Java, Python, Ansible

  • Senior Software Engineer at LeadIQ
    Mar 2021 - Sep 2022 · 1 yr 7 mos

    Built backend services powering sales prospecting workflows, serving both internal teams and the core product Led internal Kubernetes knowledge-sharing sessions, upskilling the engineering team on container orchestration and production operations Led technical hiring for Scala FP backend engineers - reviewing CVs, conducting in-depth technical interviews, and providing hiring recommendations Scala, ZIO, GraphQL, Cats, Monix, Kubernetes, Docker, Microservices, Kafka, Postgres, Mongo, Datadog

  • SoInteractive (3 yrs 4 mos)
    • Scala Developer / Integration Architect
      Jul 2017 - Jan 2019 · 1 yr 7 mos

      Built and evolved an event-based gamification platform in a microservices architecture as a core team member Optimised legacy systems for speed, availability, and scalability Introduced Domain-Driven Design (both strategic and tactical modelling) to the team Collaborated closely with the DevOps team on infrastructure and deployment practices Scala, Microservices, Kafka, MongoDB, Cassandra, Docker, Sbt, DDD, Ansible

    • Scala Developer
      Oct 2016 - Jun 2017 · 9 mos

      Worked on event-based gamification platform in microservices manner as a member of the core team Scala, Akka (Actors, Cluster, Streams, HTTP, Persistence), Microservices, Kafka, MongoDB, Cassandra, Docker, Sbt

    • Junior Scala Developer
      Oct 2015 - Sep 2016 · 1 yr

      Worked on event-based gamification platform as a member of the core team Scala, Akka (Actors, HTTP, Persistence), RabbitMQ, MongoDB, Cassandra, Docker, Sbt

  • Java Developer Intern at Compact Solutions
    Jul 2015 - Sep 2015 · 3 mos

    Designed, implemented, and tested a module for JSON serialisation/deserialisation of complex data flow graphs in the MetaDex product Java 8, Maven