Krzysztof Krzys

Krzysztof Krzys

Software Engineer

+48 797 380 526krzysztof.krzys@icloud.comPoznan, Poland

Professional profile

I translate business requirements into technical solutions and ensure their reliable operation. Led system transformations from monoliths to distributed architectures across organizations of various scales. Pragmatic approach: solutions fitted to actual needs, not conference trends. Recent projects include infrastructure automation, observability systems, and exploring practical LLM applications in system operations.

Technical approach

Core tools

Go as the sweet spot – zen-like simplicity meets performance, ideal for distributed systems. TypeScript where flexibility is needed. Python as the screwdriver for automation and LLM experiments. React for interfaces (SolidJS when I get to choose), Vue/Nuxt recently proving surprisingly practical for rapid iteration. Svelte elegant but sadly rarely acceptable. Angular preferably avoided when possible.

Infrastructure

AWS as primary cloud environment. Go as the cloud language – writing services that actually scale. Python for automation and orchestration. Infrastructure as Code (Terraform), containerization (Docker, Kubernetes when it makes sense), CI/CD pipelines. Observability with Grafana and Prometheus as mandatory baseline. Recently experimenting with practical LLM applications in operations automation – results promising, though requiring caution.

Philosophy

Technology as a tool, not an end in itself. Go as zen-like balance between simplicity and performance – a rare combination that simply works without philosophical debates. Currently investing serious time in Rust – the learning curve is real, but the payoff for systems work feels worth it. Elixir and the BEAM ecosystem intrigue me for different reasons: fault tolerance patterns that make distributed systems actually resilient. Using what solves the problem, not what's fashionable.

Methods

Iterative delivery over big-bang releases. Observability from day one – you can't fix what you can't see. Automation of repetitive tasks because humans make mistakes when bored. Code review as knowledge sharing, not gatekeeping. Documentation that explains why, not just what. Technical debt tracked and paid deliberately, not accidentally accumulated.

Skills & technologies

Languages

  • Go
  • Python
  • TypeScript
  • JavaScript
  • PHP (legacy)

Infrastructure

  • AWS
  • Terraform
  • Docker
  • Kubernetes
  • Linux

Frontend

  • React
  • Vue/Nuxt
  • SolidJS
  • Svelte
  • Next.js

Observability

  • Grafana
  • Prometheus
  • CloudWatch
  • Distributed Tracing

Databases

  • PostgreSQL
  • MongoDB
  • Redis
  • DynamoDB

Practices

  • IaC
  • GitOps
  • CI/CD
  • FinOps
  • SRE
  • LLM Automation

Routinely wrestling with legacy systems – PHP primarily, though increasingly reluctantly.

Professional experience

  1. Josera

    2020 – present
    • Full Stack Developer
    • Solution Architect
    • DevOps Engineer / SRE
    • R&D Engineer

    Poznan, Poland

    End-to-end responsibility for distributed systems. Infrastructure transformation from ad-hoc deployments to repeatable, monitored processes. Implementation of observability enabling rapid diagnostics. Introduction of cost management practices. Research on practical LLM applications in system operations automation.

    • Go
    • AWS
    • Terraform
    • Python
    • Docker
    • Kubernetes
    • Observability
    • LLM
  2. Norweb AS

    2017 – 2019
    • Full Stack Developer
    • Information Architect
    • UX/UI Analyst

    Szczecin & Poznan, Poland | Trondheim, Norway

    First experience with distributed systems and infrastructure as code. Migration from manual deployments to CI/CD pipelines. Introduction of containerization and basic monitoring. Learning that reliability is a result of conscious design decisions, not chance.

  3. Dige

    2014 – 2017
    • Full Stack Developer
    • UX/UI Analyst
    • Team Lead

    Szczecin, Poland

    Web application development. First experiences with code requiring long-term maintenance. Team coordination and client communication.

  4. Nomadiq & Studio Dōzo

    2010 – 2014
    • Full Stack Developer
    • Graphic Designer
    • DTP Specialist

    Szczecin, Poland

    Collaboration with non-profit organization in creating technological solutions for the non-governmental sector. Design and development of web applications and content management systems.

  5. Flower Station

    2006 – 2007
    • Full Stack Developer
    • eCommerce Solutions Architect
    • Graphic Designer

    London & Aberdeen, United Kingdom

    Design and implementation of e-commerce platform for florist chain. Responsibility for system architecture and payment integration.

  6. Oskar Wegner

    2003 – 2005
    • Database Administrator
    • Account Director Assistant

    Szczecin, Poland

    Database administration and data-driven analysis in advertising agency. Preparation of analytical reports, SQL queries, reporting process automation. Support for client services department through data insights.

  7. Urząd Marszałkowski Województwa Zachodniopomorskiego

    2001 – 2003
    • Inspector for Cultural Institutions
    • Data Protection Officer
    • ISO 9000:2001 Coordinator

    Szczecin, Poland

    Data-heavy analysis of regional institutions – financial and substantive. Statistics, budget forecasting, indicator analysis. SQL as primary tool. Supervision of cultural institutions, implementation of personal data protection procedures, and coordination of ISO 9000:2001 quality management system implementation.

Selected projects

Practical automation with LLM

Exploring practical LLM applications in system operations – not chatbots, but actual automation. Log analysis, pattern recognition, assisted diagnostics. Serverless architecture for cost control.

  • Python
  • LLM/RAG
  • AWS Lambda
  • Grafana
  • Prometheus

Infrastructure evolution on AWS

Transformation from ad-hoc to standardization. Self-service provisioning with guard rails. Deployment pipeline with sensible rollback. Observability enabled by default.

  • AWS
  • Terraform
  • Docker
  • Kubernetes
  • Grafana
  • Prometheus

FinOps and AWS cost optimization

FinOps as culture, not just tools. Visibility: everyone sees costs. Accountability: teams responsible for spending. Result: 35% reduction with improved reliability.

  • AWS Cost Explorer
  • Terraform
  • Grafana
  • CloudWatch

Education

Having coded since childhood and completed mathematics-physics track in secondary school, I chose sociology and political science. Deliberately – convinced that what truly matters is awareness of the context in which systems operate. Technology solves problems, but first you need to understand people.

University of Szczecin

Sociology and Political Science

Master's Degree

Szczecin | PL

Languages

  • PolishNative
  • EnglishFluent
  • GermanIntermediate
  • FrenchBasic

Interests

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