Alex Plekhanov

• Nov 2017 — Present
  Staff Software Engineer

  Byborg IP (Docler Holding)

  • Designed and operated statistics infrastructure handling 2 million events/day + monitoring and alerting
  • Introduced Apache Kafka into statistics system: eliminated critical data loss
  • Introduced PostgreSQL with TimescaleDB: allowed us to provide filtering by 30 dimensions to provide granular data to clients
  • Led cross-functional initiatives with minimal oversight: owned Kafka integration and TimescaleDB implementation from research and design docs through ongoing operations. Documented decisions and created playbooks, keeping stakeholders informed
  • Implemented observability with Grafana dashboards tracking both technical metrics (latency p95/p99, error rates, throughput) and business KPIs
  • Mentored developers on production debugging and system reliability practices
  • Interview candidates for Senior/Staff Software Engineer roles
  • Established CI/CD workflow: introduced Docker, PHPStan, CodeSniffer, makefile
  • Championed DDD adoption: ubiquitous language, layered architecture, rich domain models, value objects, and business invariant enforcement
  • Led modernization of legacy applications and system
• Jun 2015 — Jul 2017
  Senior PHP Software Engineer

  Stickerpipe (908.vc)

  • Develop content distributing API (stickers for keyboards)
  • Develop Telegram and Facebook bots
• Oct 2013 — May 2015
  PHP Software Engineer

  DataArt

  • Develop new features
  • Organizing PHP User Group in the city
  • Give talks on PHP User Group meetings
• Apr 2013 — May 2013
  PHP Software Engineer

  FORFORCE

  • Develop new features for the social network project
• Oct 2012 — Mar 2013
  PHP Software Engineer

  OWOX

  • Develop internal products on OWOX Engine platform

• Sep 2010 — Jun 2015
  Bachelor in Applied Mathematics

  Dnipropetrovsk National University

English - advanced (Cambridge KET, PET, FCE).
Ukrainian - native.
Russian - native.
Luxembourgish - beginner.

• 
  Denes Kiss Head of Engineering (managed me directly) · Byborg IP

  Alex is the rare engineer who combines deep technical expertise with the ability to drive meaningful change across an organization. As a Staff Software Engineer on our Affiliate Systems team, he doesn't just write code - he shapes how we think and build systems.

  What sets Alex apart is his end-to-end ownership. He led the complete rework of our Timescale-based statistics system, taking it from initial planning through POC to production deployment. But his impact extends beyond individual projects. Alex actively drives RFCs within the company, elevating technical discussions and pushing us toward better architectural decisions. He has that special ability to plan complex features, validate them through proof-of-concepts, and then execute flawlessly all the way to production.

  Beyond his technical contributions, Alex is a natural mentor. He's the kind of person team members gravitate toward for guidance, and he generously shares his knowledge and experience. And on a personal level, he's simply great to work with - the kind of colleague you'd happily grab a beer with after work.

  Any team tackling complex technical challenges would be incredibly fortunate to have Alex. He brings the complete package: technical depth, leadership, and genuine collegiality.

• 
  Fabian Lauer Staff Software Engineer (worked together on the team) · Byborg IP

  Alex and I worked together for over three years, during which he consistently demonstrated strong technical expertise, sharp analytical thinking, and solid leadership. As the unofficial lead for our backend initiatives, Alex was always proactive in supporting his team and ensuring projects progressed smoothly. He frequently led software projects that required collaboration across multiple teams, delivering valuable outcomes for the wider organization.

  His friendly and collaborative approach made working with him a seamless and productive experience. I'm confident Alex will bring the same impact and leadership to any team he joins.

• 
  Janos Juhasz Software Engineer (worked together on the team) · Byborg IP

  I had the pleasure of working directly with Oleksii for eight years on the same team, collaborating on numerous and diverse projects. Throughout this entire period, his attitude toward his work was exemplary.

  He is an outstanding team player, consistently reliable, and produces highly precise work. Oleksii is also genuinely helpful to his colleagues and is eager to learn and champion new technologies.

  It was truly a pleasure working alongside him. I confidently recommend him for any Software Engineer position.