About

Hi, my name is Oliver Sild. I was born in 1993 in a small country known as Estonia. I’m currently living in a small city with less than 40,000 people.

In primary school, I ran my own private servers for games and created dynamic SMS services to earn my first pocket-money.

Hacking in the games was a regular thing, so finding ways to address these issues quickly became my main interest.

Later, I studied IT and I’m a certified computer networking specialist. During my studies I also became a volunteer in Estonian Defence League’s Cyber Unit (Pärnu).

I quit my studies and started my own company which focused on web development and website security.

Few years later; I founded Patchstack, co-founded a coworking space and kickstarted the start-up ecosystem in Pärnu, Estonia.

In late 2020, my co-founded NGO named CTF Pärnu also opened the first Hackerspace in Pärnu, Estonia.

I believe in communities, personal development and lifelong learning. Big cities are over-rated and life-quality in small- close to nature cities is the future!

Big things can be done from anywhere!


Oliver is the innovator who wakes up in the middle of the night after dreaming about a new startup idea to pitch the new idea to his team. He is extremely good at communication and motivating people. He is a strong believer in self-development and continuous learning. He’s a great CEO who truly values his employees.

Agnes Talalaev (CMO at Patchstack)


Things I’m proud of

TOP 5 Young Entrepreneur in Estonia (2020) - I was selected as one of the TOP 10 nominates for the young entrepreneur of the year (2020) in Estonia.

Winner of Salto Growth Camp (2020) - I participated in a startup competition where WebARX received the first place and I was voted to the second place as the most helpful founder in the programme.

Young Entrepreneur Of The Year (2019 - Pärnu, Estonia) - In 2019 I received a title of “Young entrepreneur of the year” in Pärnu, Estonia.

Brave Entrepreneur Of The Year (2019 - Pärnu, Estonia) - In 2019 I received a title of “Brave entrepreneur of the year” in Pärnu, Estonia. The recoqnition was given by Luminor Bank.

Alumni of Cylon Accelerator (2017) - WebARX was selected to the top 10 from 1000 early-stage cyber-security startups in the world to be part of the intensive 3 month business accelerator in London, UK.

Alumni of Tehnopol Startup Incubator (2017) - WebARX graduated from the Tehnopol Startup Incubator by leaving to Cylon Accelerator and raising its first investment.

3rd place at JIC Starcube Competition (2015) - ESEC was selected to the top 10 early-stage startups to be part of intensive 3 month ICT startup competition/accelerator in Brno, Czech Republic.


Things I’ve done

Welcome Patchstack! (2021) - We merged WebARX and Plugbounty together and launched a vulnerability database for WordPress plugins. We also started partnerships with some of the largest hosting companies in the world.

Hackerspace Pärnu (2020) - CTF Pärnu NGO opened the first Hackerspace in Pärnu, Estonia where cyber-security enthusiast can learn, practice and come together.

CTF Pärnu (2018) - Co-founded an NGO which organizes cyber-security capture the flag events all over Estonia. Later opened the first Hackerspace in Pärnu, Estonia.

Plugbounty (2019) - Part of WebARX, but is a standalone platform where ethical hackers can report security vulnerabilities inside open source web application components.

WebARX (2017) - A security company focused on web application security. Even though, I was playing with the idea of this company starting from 2015, it was formally set up in the end of 2017 in London, UK.

Forwardspace Co-working Space (2017) - Opened the first co-workingspace in Pärnu, Estonia. Over the years it has become the centre of the local start-up and tech community.

ESEC Solutions (2014) - My first company which we built with a classmate to build websites and helped businesses whose websites were hacked.


Where I’ve volunteered

University of Tartu Pärnu College - In 2019 I was invited to the advisory board of a local university in Pärnu, Estonia.

Pärnumaa Vocational Education Centre - In late 2019 and early 2020 I helped local ICT teachers to combine ICT Security Specialist programme based on secondary education. Starting from September 2020 students can now officially learn to become ICT Security Specialist at PVEC.

Red Cross Youth - When I was ~16, I was selected to be a youth group leader in Red Cross. We provided first-aid at sports events and helped police with searching missing people.