Sergio Mejia

Esports operations & growth

Sergio Mejia

I’ve played, coached and organized competitive gaming, and I’ve run real campaigns and customer pipelines in business. I connect how players behave with how a business grows.

Based in Colombia · Open to relocation and remote roles · CV available on request

Sergio at the Overwatch World Cup, wearing Colombia’s national team jersey

Selected work

Every figure below comes from the screenshots shown beside it. Trialworkz is early-stage, so I separate what is done from what is in development. Filter by the kind of role you’re hiring for, and click any image or slide to enlarge it.

Trialworkz

Founder · Overwatch tournament community on Discord

Active · tools in development

Goal. Build an Overwatch tournament community with a clear brand, structured events and its own tournament tooling.

What I did. I lead marketing and PR, launched the Discord community, and promoted events on Reddit and Facebook. I ran a first test tournament and direct the developers building the tournament bot (Michael) and the website (Dav), working with producer Alex. Brand identity and art direction by Daniela Romanillo R.

Results so far

  • 50+ Discord members in the first month
  • First test tournament completed, about 10 players online
  • r/Overwatch announcement post: 2.3K views (views, not sign-ups)
  • Second event: open bracket, single elimination, October 25

Done vs. in development. Done: brand identity, community, first test tournament. In development: tournament bot (planned stack: Node.js/TypeScript, Supabase, Stripe, OCR-based match verification), website, official tournament.

Community building · event operations · marketing & PR · product direction

Reddit announcement for the Trialworkz Overwatch open bracket on October 25, showing 2.3K views
r/Overwatch announcement, as posted.
Draft Trialworkz website homepage
Draft homepage (unpublished). The tagline is placeholder copy.

Brand identity deck (in Spanish), art direction by Daniela Romanillo R. Click to enlarge.

Trialworkz brand identity deck, page 1Trialworkz brand identity deck, page 2Trialworkz brand identity deck, page 3Trialworkz brand identity deck, page 4Trialworkz brand identity deck, page 5Trialworkz brand identity deck, page 6
Planned tech stack diagram for the Trialworkz Discord tournament bot
Planned tech stack for the tournament bot, from the developer’s diagram.

Clash Royale competitive ecosystem: field notes

Independent research · carousel and infographic

Question. What does the competitive journey actually feel like for a new player?

What I did. I searched for tournaments, entered one, explored the ecosystem and spoke with an organizer and a creator.

What I found

  • Discovery is hard: inactive listings, regional restrictions, a confusing registration flow and unclear official vs. community events.
  • The opportunity may be in the middle: a clearer path from casual to competitive play, not simply more tournaments.
  • Organizers are users too: they need accessible tools, API access and reliable systems.
  • Watchability needs a story: who, what, why, and can a newcomer follow it.

User research · player-journey analysis · ecosystem thinking · storytelling

Clash Royale field notes carousel, slide 1Clash Royale field notes carousel, slide 2Clash Royale field notes carousel, slide 3Clash Royale field notes carousel, slide 4Clash Royale field notes carousel, slide 5Clash Royale field notes carousel, slide 6Clash Royale field notes carousel, slide 7Clash Royale field notes carousel, slide 8

All 8 slides of the carousel. Click a slide to enlarge it and flip through the rest.

View the infographic (click to enlarge)Infographic of the Clash Royale competitive ecosystem

Real estate marketing & lead generation

Independent real estate professional · Colombia · Feb 2026–present

What I did. I marketed a property listing with Meta (Facebook and Instagram) campaigns that sent people to WhatsApp, testing different audiences and creative formats (a carousel, a reel and a single image). I followed up by WhatsApp and organized weekend visits. The listing sold.

  • 196 WhatsApp conversations across four campaigns on about COP 267,000 in ad spend (≈ US$85), or roughly COP 1,365 per conversation.
  • Cost per conversation ranged from COP 693 to COP 6,246 between campaigns.
  • Separately, I built a prospect sheet of 189 property owners across ten residential complexes (120 selling, 67 renting, 2 either), collected door to door and tracked by stage.

Conversations are Meta-reported messaging results, not sales. Ad account amounts are in Colombian pesos; the US$ figure uses about COP 3,150 per dollar.

Meta Ads · audience and creative testing · lead handling · CRM-style tracking

Meta Ads Manager table for four campaigns, showing messaging conversation results, cost per result and total spend

Ads Manager, all four campaigns. On a phone, scroll sideways or tap to enlarge.

Spanish social post: 3 mistakes that keep your property from sellingSpanish social post on what to consider when investing

Two of the social posts I created.

Esports coaching business

Founder · Overwatch coaching · Sep 2021–Apr 2026

What I did. I built and ran a coaching service on a coaching platform: player development sessions, customer communication and repeat business.

  • 4.98 rating across 248 Overwatch orders
  • 204 clients have ordered; 558 total orders across 12 services
  • Five 5-star client reviews shown (the platform masks names)

Platform income figures are private and not shown.

Player development · customer relationships · service delivery · acquisition

Overwatch coaching listing: 4.98 rating, 248 served
Coaching dashboard: 204 ordering clients, 12 services, 547 served
Five 5-star client reviews

QA tester assessment: Driving Empire (Roblox)

Take-home assessment for Voldex · not an employment role

A 14-page submission in five parts: a risk-based test plan, six issues spotted in gameplay video, a priority ranking of six reported bugs, a release decision with incomplete information, and three bugs I found and wrote up myself. Open the tabs for my notes, then scroll the full document below.

Scenario: a new Vehicle Trading feature ships soon and there are 45 minutes to test. I ordered the work by risk:

  1. Core flow: send, accept, decline, complete and cancel trades.
  2. Ownership and item integrity: vehicles transfer correctly and ineligible ones can’t be traded.
  3. Acceptance logic: any change to the offer must reset both players’ acceptance.
  4. Edge cases: interruptions, different map locations, trading while inside a vehicle.
  5. Player experience: is the process clear and does it give enough feedback?

Biggest risks I named: players being scammed or trading away a vehicle by accident, and wrong ownership transfers when a trade is interrupted, cancelled or modified.

Risk-based testing · bug reporting · reproduction steps · prioritization · escalation and communication

The full submission. Scroll inside the box to read all 14 pages.

QA assessment, page 1QA assessment, page 2QA assessment, page 3QA assessment, page 4QA assessment, page 5QA assessment, page 6QA assessment, page 7QA assessment, page 8QA assessment, page 9QA assessment, page 10QA assessment, page 11QA assessment, page 12QA assessment, page 13QA assessment, page 14

Flower Cat League

Head of Social Media & Producer · since September 2026

What I do. I direct social media and marketing and produce events for a Clash Royale community league on Discord. I helped direct the overhaul of the old rewards system into the current FCL token shop, where wins earn tokens that players redeem for rewards.

League context (supplied by the league owner, October 23, 2026). These are whole-league figures, not my individual results, and the league was running before I joined.

1,493Discord members, up from about 50 testers in 2024
2,476players in the league’s records
112tournaments run
66%of tournament players came back for another one
~2,000average viewers on BigSpin’s stream of the FCL Championship
527player questions answered by the league’s AI helper since June 2026

Social strategy · event production · community · rewards-system direction

Flower Cat League website shop page with FCL token rewards

Credentials, with proof

Official posts and announcements, shown as published.

Official Colombia post, July 30, 2019: final roster for the Overwatch World Cup 2019, including Sergio Barrero Mejia as DULLA
2019: named to Colombia’s final 7-player roster (listed as “DULLA”).
Official Colombia post, April 16, 2023: Overwatch World Cup 2023 team with ImDullahax listed among the reserves
2023: named a reserve (listed as “ImDullahax”).
Universidad Carolina video: fourth consecutive national Overwatch championship
Universidad Carolina’s announcement of Dragones UC’s fourth consecutive national Overwatch title (July 2020). I played for the team from 2018 to 2023. Watch on Facebook.

About

I’m an esports and growth professional based in Colombia. I competed at national and international level in Overwatch, coached players for years as my own business, and now build tournament and community projects while running campaigns for clients.

My background connects gaming with business: community and events on one side, marketing, lead pipelines and QA on the other. I’m open to relocation and remote roles in gaming, esports and adjacent companies.

Education & certificates

  • Video Game Design, Carolina University (completed 2023; diploma in process)
  • Google Data Analytics Professional Certificate (June 2026)
  • Google Digital Marketing & E-commerce Professional Certificate (May 2025)
  • Real Estate Management Certificate, Politécnico Grancolombiano (2026)

The Digital Marketing and Data Analytics course projects (reports, SQL, spreadsheets) were completed during those certificates.

Experience

  • Kampaing Kings, remoteJan 2026–present · QA / Team Lead for a team of 50+; I track their transfers to closers
  • Independent real estate professionalFeb 2026–present
  • Valhallan Esports & Legacy Martial ArtsJul 2025–Feb 2026 · Sales, marketing, esports coach, customer service
  • Goldfish Swim SchoolApr 2024–Aug 2025 · Sales, marketing, customer service
  • Rangel HomesNov 2023–Apr 2024 · Marketing, business operations
  • Customer support, Booking.com and Dow JonesOct 2022–Oct 2023 · Remote
  • Founder, esports coaching businessSep 2021–Apr 2026
  • Gaming House Manager, Carolina UniversityJan 2021–Oct 2022

Let’s talk

I’m looking for roles in esports and gaming operations, community, QA and player experience, growth marketing and business operations. Open to relocation and remote work.

My CV is available on request, tailored to the role.