Максим

CONTACTS Maksym Mokryi
[відкрити контакти](див. вище в блоці «контактна інформація») Senior System Engineer & Backend Architect
Telegram / Viber: same number Linux · Python · PostgreSQL · Infrastructure Automation
[відкрити контакти](див. вище в блоці «контактна інформація») Remote · 20+ years in production systems
[відкрити контакти](див. вище в блоці «контактна інформація»)
SUMMARY
Kyiv, Ukraine
20+ years of hands-on production experience across Linux administration,
OPERATING SYSTEMS backend engineering, and database architecture. Started as a Linux system
administrator in 1999, grew into a backend developer in 2004, and have been a
Linux — 20+ years Team Lead and System Architect for the last 8+ years — owning the full stack
◦ Debian / Ubuntu (production) from the Linux host through nginx and PostgreSQL to the API. Comfortable on
◦ CentOS / RHEL family both sides of the SRE / backend boundary. Currently looking for a System
◦ Server hardening, package Engineer role where deep Linux knowledge, database performance, and Python
management, systemd automation matter.
Windows Server — administrative
KEY STRENGTHS FOR THIS ROLE
AUTOMATION & SCRIPTING • Linux production experience across Debian / Ubuntu and CentOS / RHEL
• Bash / shell scripting (20+ yrs) families — daily work for 20+ years, including server provisioning, hardening,
troubleshooting, and uptime management.
• Python — automation, tooling,
APIs (8+ yrs) • PostgreSQL administration and performance expertise — recently delivered
5×–20× speedups on a production workload through index design, query
• AWS CloudFormation (IaC)
rewrites, schema rework, and EXPLAIN-driven tuning. Same level of comfort
• Git, GitLab CI/CD with MariaDB / MySQL.
• Docker • Python and Bash automation — 8+ years of Python (Flask, FastAPI for tools
Ansible, Proxmox VE — actively and APIs) plus 20+ years of shell scripting for deployment, monitoring, and
learning; comfortable picking up operational tasks.
given sysadmin background. • Infrastructure ownership end-to-end — designed and operated AWS-hosted
services (S3, DynamoDB, Lambda, API Gateway) using CloudFormation as
DATABASES infrastructure-as-code. Strong instinct for IaC and reproducible setups.
PostgreSQL — 20+ years • nginx, web-service configuration, TLS, reverse-proxy and load-balancing
◦ Performance tuning (recent 5×– patterns — daily operational use.
20× speedups) • Comfortable writing clean operational documentation — deployment
◦ Triggers, indexing, replication, runbooks, post-mortems, internal wikis. Required by the role and natural for
backups me.
MySQL / MariaDB — 20+ years
AREAS I'M ACTIVELY PICKING UP
Redis — 3 years
Two items from your stack are not yet on my CV — I'm honest about that, and
WEB & SERVICES both are well within reach for someone with my Linux/automation background:
• nginx (reverse proxy, TLS, load • Ansible — already familiar with the model (declarative, idempotent, agentless
balancing) over SSH); plan to be productive within 2–3 weeks. The hard parts (Linux
internals, package management, networking) I already own.
• REST APIs, web services
• Proxmox VE — comfortable with virtualisation concepts and with KVM/QEMU
• Flask / FastAPI for internal tools
at the host level; Proxmox itself is a management layer on top of that. Expect
a similar 2–3 week ramp.
CLOUD
• AWS: EC2-equivalents via WORK EXPERIENCE
Lambda / ECS, S3, DynamoDB
Senior Backend Engineer / Team Lead & System Architect
• API Gateway, CloudFormation,
CloudTrail Seller-Online LTD • Nov 2017 – Present (8+ years) • Remote · Kyiv, UA &
Feasterville-Trevose, US
• Load Balancer
• Own production Linux infrastructure for two e-commerce platforms (Seller-
 Online, UA-for-US) — server administration, deployment, monitoring, incident
LANGUAGES response.
• PostgreSQL database administration and performance tuning — delivered 5×–
English — B2 (Duolingo 116, May
20× speedups through indexing, query rewrites, EXPLAIN analysis, and
2026)
schema work.
Ukrainian — Native • Designed and operated AWS infrastructure using CloudFormation
Russian — Native (infrastructure-as-code) — S3, DynamoDB, Lambda, API Gateway.
French — open to learning (company • Built and maintained Python services (Flask + SQLAlchemy) and shell-based
offers courses) automation for deployments and operational tasks.
• Drove the application process and security review for Amazon SP-API
SOFT SKILLS Restricted Data (PII) access — approved Feb 2026 — and Etsy Open API
commercial approval.
• Fast learner — picks up new tools
quickly • Integrated Claude Code, Google Gemini, and OpenClaw into the daily
workflow — +30–40% productivity on engineering and operational tasks.
• Analytical, automation-minded
• Lead a small engineering team — code review, architectural decisions,
• Reliable, accountable, self-
mentoring.
organized
• Strong documentation habits Full-Stack Engineer (Linux + PHP)
• Calm under production incidents Arsenal LTD • Jan 2012 – Sep 2017 (5y 9m) • Donetsk / Dnipro, Ukraine
• Built and operated large-scale e-commerce features and back-office systems
on Linux + PHP + MySQL/PostgreSQL stacks.

Full-Stack Engineer (Linux + PHP)
Discon LTD • Jan 2008 – Dec 2011 (4y) • Donetsk, Ukraine
• Delivered customer-facing web apps and internal tooling on
Linux/PHP/MySQL stack — full lifecycle from server setup to deployment.

Full-Stack Engineer (Linux + PHP)
Ok-Checkout • Jan 2004 – Sep 2007 (3y 8m) • Donetsk, UA & Los Angeles, US
• Worked on a US-facing checkout and payment-processing product — early
exposure to high-availability concerns, trusted-data handling, and Linux server
operations.

System Administrator & IT Teacher
Idea LTD / IT Step Academy • Sep 1999 – Dec 2003 (4y 4m) • Donetsk, Ukraine
• Linux server administration — daily operations, networking, package
management, user/permission management, backups.
• Taught IT fundamentals at IT Step Academy — networking, operating systems,
scripting.
• This is where the systems-engineering DNA started. Everything I built later sat
on top of these skills.

EDUCATION
Donetsk National Technical University • 1995–2000
Faculty of Computer Science — Computer Systems and Networks.

ADDITIONAL TRAINING
• AWS Services course (2023)
• Python foundation course (2017)

AVAILABILITY
• Personal military deferment on family grounds — no draft interruption to
work.
 • Workspace with redundant power supply and backup internet —
uninterrupted operation during regional outages.
• Full-time, fully remote. Comfortable working on French (Paris) and Ukrainian
schedules.

I'm happy to go deeper on any of the above in an interview — especially the
PostgreSQL, Linux, and infrastructure-automation pieces.