Michal Golinski, Developer in Warsaw, Poland
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Michal Golinski

Verified Expert  in Engineering

Bio

Michal is a problem solver with a down-to-earth, getting-things-done attitude. Having a strong distributed computing and startup background, he can successfully connect technical and business worlds. Michal has solid professional experience with large-scale systems, microservices, and cloud-native environments.

Portfolio

Fresha
Elixir, Ruby, Ruby on Rails 5, PostgreSQL, Datadog, Back-end
Orange
GitLab, GoCD, Ansible, Terraform, NGINX, ActiveMQ, Java, Docker, Prometheus...
Wirtualna Polska
Go, REST, RPC, Microservices Development, Back-end

Experience

SQL - 9 yearsBack-end - 7 yearsRPC - 5 yearsREST - 5 yearsMicroservices Development - 5 yearsGo - 3 yearsPostgreSQL - 3 yearsElixir - 2 years

Availability

Part-time

Preferred Environment

Go, Elixir, Linux, Microservices, REST, RPC, gRPC, SQL, PostgreSQL, Back-end

The most amazing...

...system I've worked on was a petabyte-scale storage system, where I ensured all files were stored reliably, efficiently, and available when users needed them.

Work Experience

Senior Back-end Engineer

2019 - 2021
Fresha
  • Worked on a mix of Elixir and Ruby-based back-end infrastructure for translating our system to 20+ languages, enabling the service to reach almost 1.5 billion new users.
  • Re-engineered the product catalog engine to allow higher customizability, helping attract new types of customers.
  • Rebuilt authentication mechanisms to enable new functionality from a business roadmap, all on a 24/7 up-and-running system.
Technologies: Elixir, Ruby, Ruby on Rails 5, PostgreSQL, Datadog, Back-end

Platform Engineer

2018 - 2019
Orange
  • Took part in a project bringing mobile-first user experience for telecom services (a new kind of flexible subscription-based mobile plan that is manageable entirely through an app).
  • Managed delivery of an online charging platform on an extremely short schedule (coordination of approximately 20 people from different teams within an organization, planning, and risk management).
  • Introduced and implemented DevOps practices across teams.
Technologies: GitLab, GoCD, Ansible, Terraform, NGINX, ActiveMQ, Java, Docker, Prometheus, Elasticsearch, Back-end

Software Developer

2017 - 2018
Wirtualna Polska
  • Developed microservices for more than 10,000 RPS, tens of petabytes storage system, and hundreds of millions of objects.
  • Designed and implemented parts of garbage collection that helped efficiently optimize disk storage usage.
  • Implemented and promoted new approaches to observability and monitoring of microservices (e.g., Prometheus).
Technologies: Go, REST, RPC, Microservices Development, Back-end

Cohort Member

2016 - 2016
Entrepreneur First
  • Selected to join the 7th Cohort of Europe's top accelerator, which specializes in building deep technology companies from scratch.
  • Validated and explored a number of internet of things ideas in the areas of smart city and smart agriculture both from technical and business perspectives.
  • Performed customer development activities for a number of IoT ideas for applying LPWAN technologies (explored LoraWAN specifically).
Technologies: Go, C++, Java, Internet of Things (IoT), Streaming

Developer/Scientist Innovator

2014 - 2016
TNO
  • Integrated two major 5G research platforms together (Open5GCore and OpenAirInterface) with commercial equipment (Ericsson eNBs).
  • Virtualized 5G platforms (virtualization: Docker, KVM, VMware, Xen; scripting: Python, Perl, bash; programming: C, and C++).
  • Developed a multi-domain MPLS-BGP VPN module for The OpenDaylight SDN controller (SDN, Quagga, BGP, programming: Java, C++, Python, web front end: HTML/CSS + JavaScript, Bootstrap framework).
  • Maintained the department network and lab using Nagios, Cacti, and The Dude.
Technologies: Java, C++, 5G Development, Internet of Things (IoT), Long-term Evolution (LTE), Software-defined Networking (SDN), Multiprotocol Label Switching (MPLS), Border Gateway Protocol (BGP), Python, Back-end

Green Wireless Power Transfer Networks

https://ieeexplore.ieee.org/document/7389968?arnumber=7389968
I was part of the team that was the first in the world to propose two classes of wireless power transfer network (WPTN) protocols. we implemented and tested the protocols in a real-life, embedded system against proposed performance indicators.

We managed to save 80% energy with only 17% less energy harvested compared to the baseline.

Our findings were published in the 6th most-cited journal in the field, according to Google Scholar - Impact factor (2017): 7.172.
2012 - 2015

Master's Degree in Electrical Engineering

Delft University of Technology - Delft, The Netherlands

2008 - 2012

Bachelor's Degree in Electrical Engineering

Warsaw University of Technology - Warsaw, Poland

2011 - 2011

Student Exchange Participant in Computer Science

Swiss Federal Institute of Technology (ETHZürich) - Zürich, Switzerland

Tools

GitLab, Ansible, Terraform, NGINX, ActiveMQ

Languages

Go, Elixir, SQL, Ruby, Java, C, C++, Embedded C, Embedded C++, Python, C#

Paradigms

REST, Microservices Development, Software-defined Networking (SDN)

Platforms

Linux, MacOS, Docker

Frameworks

gRPC, Ruby on Rails 5

Storage

PostgreSQL, Datadog, Elasticsearch

Other

RPC, Back-end, GoCD, Prometheus, Microcontrollers, Software Design, Software Development, Algorithms, Data Structures, Wireless Networking, Wireless Protocols, Networking, Drones, Distributed Systems, Cryptography, Software, TCP/IP, Routing, Internet of Things (IoT), Streaming, 5G Development, Long-term Evolution (LTE), Multiprotocol Label Switching (MPLS), Border Gateway Protocol (BGP)

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