Budapest, Hungary · EU long-term residentBudapest, Hungary — open to relocation · EU long-term resident — no visa sponsorship needed
372 words · 100%·5 roles, every bullet
Most of my work is invisible when it goes right: pipelines that don't fail, certificates that rotate themselves, a migration nobody noticed. The log is where I keep the receipts — what I built, and what broke.
Platform engineer, five years: CI/CD systems, internal tooling and provisioning automation that engineering teams adopt. C#, Python and TypeScript across Azure, OpenShift, Kubernetes and Terraform.
Experience
ExxonMobil
Budapest, Hungary
Enterprise Observability Engineer
Sep 2025 – Present
Built a ThousandEyes SDK automation framework that cut account migration from 3-4 days of manual work to ~3 hours, avoiding vendor professional-services cost; handed over to the MSP team.
Cut six-figure annual monitoring spend by removing underused synthetic capacity and redundant cloud network monitoring, with no loss of coverage.
Automated creation and management of the tests behind enterprise reliability dashboards, and extended monitoring to core DNS, DHCP and network services.
Led an OpenTelemetry collector proof of concept on AWS OpenShift (ROSA), subsequently adopted by internal application teams.
Internal SME for Datadog and ThousandEyes: an SDK framework that cut account migration from days to hours, six-figure monitoring spend removed with no loss of coverage, and an OpenTelemetry collector proof of concept adopted by application teams.
4 bullets summarised
API Platform System Architect
May 2025 – Sep 2025
Architected a GitHub Actions v2 pipeline upgrade that eliminated recurring automation failures and improved release reliability across the platform.
Led DR planning, risk assessments and vulnerability assessment execution for a tier-1 API platform to ensure SLA compliance and audit readiness.
Migrated internal services from on-premise OpenShift to the managed OpenShift service, going first as the reference migration and writing the runbook consuming teams followed.
Re-architected a tier-1 platform's GitHub Actions automation, led its DR and vulnerability planning, and ran the reference OpenShift migration other teams followed.
3 bullets summarised
API Platform Senior Engineer
Dec 2023 – May 2025
Migrated 200+ API pipelines from Azure DevOps to a centralised GitHub Actions runner with zero downtime and zero config changes for consuming teams.
Designed the centralised trigger model behind that migration — one repository owning its runner and secrets — removing the need for ~200 per-team cloud app registrations.
Grew CI test coverage from 0% to 95%, eliminating critical regression bugs before production.
Migrated 200+ API pipelines to a centralised GitHub Actions runner with zero downtime, designed the trigger model behind it, and took CI coverage from 0% to 95%.
3 bullets summarised
API Platform Engineer
Dec 2022 – Dec 2023
Built C# APIs automating cloud namespace provisioning and API gateway integration with consistent security policy enforcement.
Automated end-to-end TLS certificate rotation across 200+ OpenShift routes in three environments via Bash and the OpenShift CLI, reducing a full-day manual operation to under 30 minutes.
Built C# automation for namespace provisioning and gateway integration, and cut TLS certificate rotation across 200+ OpenShift routes from a full day to under 30 minutes.
2 bullets summarised
Productivity Solutions Developer
Aug 2021 – Dec 2022
Built and shipped 20+ custom workflow automations, reducing manual operational overhead by ~25% department-wide.
Shipped 20+ workflow automations, cutting manual operational overhead by about 25% department-wide.
--:-- in Budapest·pipelines are green, everyone's logged off
Day job's over. This half of the site is just me — born in Ulaanbaatar, studied in Debrecen, at home in Budapest, usually with something taken apart on the desk or a long anime arc running.
About the name
Tengis — Тэнгис — is Mongolian for sea, which is an odd thing to name a boy from a landlocked country. Hungarian tenger and Turkish deniz come from the same Proto-Turkic root, so the place I was born and the place I live now agree on what it means.
In a parallel universe
I was an on-set extra in the Halo TV series — a soldier of the planet Madrigal, year 2552, favourite food fire-grilled fire walrus. My character died bravely fighting aliens. My enthusiasm survived.
somewhere on Madrigal, between takes
Madrigal, 2552
Meanwhile, in this one
watching — Overlord, AoT, Naruto. Rick & Morty on permanent rewatch
photography — sidelines of a race or up a hill, Canon in hand
Budapest Marathon 5k — the medal outweighs the distance
Ulaanbaatar → Debrecen → Budapest. both winters prepared me for neither
