Mat Leszkiewicz

I’m a support engineer with a passion for cybersecurity and mission to help people be safer in the web.

Lanuages

Polish Native English Fluent

Profile

I finished a Higher Diploma in Computer Science degree at South East Technological University (previously known as WIT) with a passion to learn cybersecurity and SoC.

Over the past four years, I have gained exposure to a wide range of industry-standard technologies in the fields of networking, cloud computing, and cybersecurity, such as AWS (CloudFormation), Heroku, load balancing, networking protocols, ELK Stack, Windows, macOS, and Linux operating systems.

My most recent experience was as a software developer intern at FundRecs, a fintech company, where I focused on designing AWS CI/CD pipelines, infrastructure research for new features in the existing program, and product development.

Additionally, I have spent the past five years working for top international IT companies, including TikTok and Accenture, in content moderation and model optimization.

As a skilled IT professional, I have experience in scripting and coding, including Python, Java, JavaScript, Bash, NodeJS, and test-driven development. My full-stack experience also includes SQL/NoSQL databases such as MySQL and MongoDB.

Furthermore, I am an EU citizen with a full permit to work in Ireland and am motivated to start a full-time job in any environment, whether it be work-from-home, hybrid, or on-site.

Education

01/21–12/24 | Southeast Technological University in Waterford
Higher Diploma in Computer Science

Main Modules:

  • Full Stack Web Development
  • Java
  • Computer Systems & Networks
  • Databases
  • DevOps
  • Cyber Security
  • Security Solutions and SoC
  • Agile Workshops
  • Mobile App Development

Assignments:

  • IMDB clone in React
  • Real Time Streaming Server on Raspberry Pi
  • JavaScript place marking web app
  • Simple weather station web app in Java
  • Next.JS IMDB clone
  • IMDB Kotlin Clone

Work Experience

06/23–Present | Intercom
Technical Support Engineer, Ireland

  • Debugging complex issues and solving technical problems for customers using Ruby, Rails, JavaScript, and native mobile development.
  • Utilizing technical knowledge to develop tools that enhance team efficiency and effectiveness.
  • Influencing the direction of Intercom’s product through customer communication and collaboration with product teams.
  • Supporting the incident response team.
  • Organizing tool workshops to enhance team performance.
  • Developing the internal tools as a member of Engineering Special-T.
  • Acting as a lead in the Interconnected Special-T on enhancing the intercom community.
**12/22–06/23 Work Gap: Traveling**

04/22–12/22 | FundRecs
Software Developer Intern in the DevOps Department, Ireland

  • Designing two CI/CD pipelines for Java applications on the AWS Code Pipeline platform brings new features to the users.
  • Developing 25 AWS CloudFormation scripts to streamline deployment processes.
  • Using Elasticsearch for threat hunting investigations.
  • Implementing Cyber Security AWS solutions for Slack shortened response time by 2 hours weekly.

01/21–04/22 | TikTok
Model Optimization Specialist, Ireland

  • Supporting the quality team in continuously optimizing the quality assurance process, enhancing policy remediation, and conducting training.
  • Creating the automated error tracker innovation for the in-house project that was in line with GDPR standards saved up to 50% on the data entry time of the quality assurance team.
  • Receiving one of the highest annual performance bonuses on the team.

01/20–01/21 | Accenture
Content Review Associate, Ireland

  • Conducting investigations and resolving issues regarding content violating internal policies.
  • Responding to user inquiries with high quality, speed, empathy, innovation, and accuracy.
  • Remaining up-to-date with client policies and guidelines and resolving inquiries accordingly.
  • Attending the office as a volunteer during the pandemic to help with the essential workload and receiving performance bonuses.

Technology Skills

Network Architecture • Docker • AWS • Elastic Stack • Honeycomb • Git • HTML5 • CSS3 • Python • Linux • Bash • Raspberry Pi • JavaScript • Ruby • Java • SQL • NoSQL • Application architecture • Full Stack • Web API • NodeJS • Atlassian Stack • Heroku • Next.JS • Kotlin

Interests and Achievements

🌍 Traveling

  • Passionate and resilient traveler: visiting 16 countries on 3 continents.
  • Living full-time in 4 countries.
  • Hiking and wild camping through the whole Wicklow Way in August 2020.
  • Backpacking through Morocco and Spain in 2018.
  • Reaching the highest mountain in Poland, Rysy (2501 m), twice.
  • Sailing through the Indian Ocean and around the Baltic Sea in 2017.

📚 Psychology

  • Reading dozens of books about the topic (including problem solving, critical thinking, encouragement, and behavioral psychology).
  • Organizing and conducting public commercial training about effective communication in 2016.

🛡️ Cybersecurity

  • Actively listening to cybersecurity and SoC podcasts such as Darknet Diaries, Malicious Life, and Modern Mischief.
  • Staying up to date with cybersecurity threats, incident response, and threat intelligence news.
  • Actively pursuing the Junior Pentester Certification on the TryHackMe platform.