Dmitry Karasik

+45 22 46 12 23
✉️ dmitry.karasik@gmail.com
LinkedIn: linkedin.com/in/dmitrykarasik
GitHub: github.com/dk

Senior Software Engineer and IT Architect (Backend / Platform / Infrastructure)

Senior engineer and IT architect with 25+ years of experience designing, integrating, and building robust distributed systems, backend platforms, and infrastructure-heavy applications in high-reliability environments.

Strong background in Linux systems, networking, backend architecture, and automation, with extensive experience delivering production systems in telecom, biotech, and enterprise environments.

Recently focused on modern cloud-native stacks (Docker, Kubernetes, CI/CD), API systems, and automation, with strong interest in applied AI and LLM-based workflows.

Known for:

End-to-end ownership of complex systems
Deep debugging and performance optimization skills
Strong reliability mindset (production-first engineering)
Ability to work across backend, infrastructure, and integration layers

Core Skills

Backend & Systems

Distributed systems design
API development (REST, gRPC)
High-performance backend services
System architecture & integration

Infrastructure & DevOps

Linux / Unix systems engineering
Docker, Kubernetes
CI/CD pipelines (GitLab, GitHub)
Automation & deployment systems

Data & Storage

PostgreSQL, Redis
Search systems (Xapian)
Data processing & analysis pipelines

Networking & Protocols

TCP/IP, UDP, SNMP
Telecommunication systems
Network troubleshooting & optimization

Programming Languages

Python, C, C++
Perl (extensive legacy + production use)
JavaScript (Node.js)
Ruby, Golang (selected systems)

Emerging & AI

API integration workflows
Automation tooling
Interest in LLM-based systems and applied AI engineering

Professional Experience

Telia A/S & Norlys A/S — Senior Software Engineer and IT Architect 2018 – Present | Telecommunications

Backend and platform engineering for large-scale telecom infrastructure systems requiring high availability, reliability, and performance. Responsible for architecture and design of backend systems supporting telecom infrastructure with high requirements for availability, scalability, and operational resilience.

Architectural responsibilities:

Designed and evolved backend and integration architecture for telecom platforms
Ensured consistency and stability across distributed systems and services
Defined integration patterns across APIs, network protocols, and service layers
Contributed to infrastructure architecture decisions (container platforms, CI/CD pipelines)
Worked across development, operations, and network domains to align system design with production constraints

Key contributions:

Designed and maintained backend systems supporting telecom infrastructure operations
Built automation and integration services across distributed systems
Worked extensively with system reliability, performance tuning, and production stability
Developed services integrating networking protocols and telecom systems
Improved deployment and operational workflows using CI/CD and containerization

Technical environment:

Linux, Python, Perl, C, PostgreSQL, Redis, Docker, Kubernetes, CI/CD, Git, gRPC, SNMP, TCP/UDP, networking systems

Novozymes A/S — Software Engineer (R&D / Biotech)

2012 – 2017

Software development for research and data-driven scientific environments.

Contributions:

Built internal tools for managing and analyzing large biological datasets
Developed search and data processing systems for R&D workflows
Contributed to internal web applications and data platforms
Worked closely with scientific teams on experimental data systems

Architectural responsibilities:

Designed internal system components for data processing and search-based workflows
Supported architecture of data-driven R&D platforms
Built integration between data storage, search systems, and web-based tools
Contributed to evolution of internal application landscape

Tech:

Linux, Python, Perl, PostgreSQL, Xapian, Node.js, Vue.js, React

Xact Consulting A/S — Software Engineer

2009 – 2012

Worked on code transformation and automation systems for legacy enterprise platforms.

Contributions:

Designed systems for automated code translation (legacy → modern platforms)
Built parsers and transformation pipelines for large codebases
Developed CLI tooling for migration workflows

Tech:

Perl, Linux, Java, parsing systems, compilers, automation tools

Capmon A/S — Software Engineer

2007 – 2009

Built distributed monitoring systems for multi-platform environments.

Contributions:

Designed Linux-based monitoring platform for infrastructure systems
Integrated heterogeneous systems across Windows and Linux environments
Developed protocol integrations for monitoring and alerting systems

Tech:

C, C++, Perl, Java, JavaScript, SNMP, WMI, WinRM, TCP/UDP

Magenta ApS — Backend Developer

2006 – 2007

Backend development for CMS and web-based systems.

Tech:

Linux, Apache, MySQL, mod_perl

Catpipe ApS — Software Engineer

2003 – 2005

Designed and implemented high-volume messaging/email systems.

Contributions:

Built scalable email processing system for high-throughput environments
Focused on reliability, performance, and fault tolerance

Tech:

Perl, Ruby, PostgreSQL, FreeBSD

Education

University of Copenhagen

2000 – 2003
PhD (Computer Science)
Research in image analysis and mathematical modeling

University of Copenhagen

1997 – 2000
Computer Science

Software development for microbiology research systems

Languages

Danish — Professional / Advanced
English — Fluent
Ukrainian — Native
Russian — Native

Additional Information

Interests

Open-source software, systems engineering, AI/automation, running (DHL Relay), rock music

Background

Born in Ukraine, based in Denmark since 1997. Extensive experience working in Danish enterprise environments and cross-functional technical teams.

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