09/15/2024 updated

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Full-Stack Engineer • Ex-Shopify, Klarna, Omio

Berlin, Germany
Worldwide
Berlin, Germany
Worldwide

Profile attachments

Alex Zhuk - CV - dev.pdf

JavaScriptApple IOSApplication Performance ManagementMySQLNode.jsTypeScriptLarge Language ModelsFull Stack DevelopmentTeam ManagementWeb TechnologiesGPT
I am a Full-Stack Engineer and Engineering Leader with over a decade of experience in the tech industry. After leading teams of up to 15 people at companies like Shopify and Klarna, I've transitioned back to hands-on full-stack development. My expertise spans Developer Experience, LLMs, Mobile, and Web technologies, with a background that includes both early-stage startups and BigTech.

Experience

Professional experience10+ years
Freelancer since2024

Languages

EnglischFluentRussischNative speakerUkrainischNative speaker

Project history

Full-Stack Engineer

Self Employed

Internet & IT

< 10 team member

Built and launched Telegram bot for Vipassana meditators.
Stack: NodeJS, Typescript, XState, DigitalOcean, MySQL, Langchain, OpenAI APIs

Full-Stack Engineer - Consultant

Other

< 10 team member

Worked with an early-stage startup (myself and 2 founders) to develop their first MVP.
Stack: React, Typescript, Refine, TanStack Query, Java Spring, PostgreSQL, OpenAI APIs

Engineering Group Manager - Shop Infrastructure Group

Shopify

Internet & IT

>10.000 team member

Directly led three teams forming the Shop Infrastructure Group. Our primary focus was to develop and maintain the infrastructure of the Shop app.

* Unified tools, patterns, and infrastructure across multiple backend codebases
* Established reliable metrics for the Shop app's boot and screen navigation,
empowering teams to enhance app performance by up to 70% for certain screens
* Reduced Shop app boot time by approximately 30%
* Developed a suite of E2E smoke tests to ensure the main branch remains
functional at all times
* Provided consistent support for 40+ teams

My responsibilities:
* Developed the roadmap and long-term vision for the Shop Infra Group
* Enhanced the on-call process across the Shop department
* Established development processes and best practices
* Mentored team members for individual career growth
* Oversaw the technical direction and architecture of our systems

Group size: 15 people
Direct reports: 10 software engineers

Engineering Manager - App Performance Tooling team

Klarna

Banking & Financial Services

5000-10.000 team member

* Decreased Klarna's React Native App load time by 60%
* Built tooling allowing other engineers in Klarna to measure App performance
* Built tooling preventing performance regressions

My responsibilities:
* Combining Engineering Manager and Product Manager roles
* Set up processes and development practices
* Individual career development of team members
* Overseeing technical direction and architecture of our systems

Direct reports: 6 software engineers

Engineering Manager - Consumer Deals team

Klarna

Banking & Financial Services

5000-10.000 team member

* Established process for automated sourcing of deals
* Built tools for internal editors to add and moderate deals
* Integrated deals in the most relevant places in Klarna's React Native App

My responsibilities:

* Set up processes and development practices
* Together with Product Manager defined the team's vision, mission, and roadmap
* Individual career development of team members
* Oversaw technical direction and architecture of our systems
* Participated in technical due diligence of one of the companies Klarna acquired

Direct reports: 6 software engineers

Engineering Manager - UI Platform team

Omio

Internet & IT

500-1000 team member

* Drove migration of Omio's Native Apps to React Native
* Built tools for Web and React Native development used by 60 engineers
* Oversaw Omio's Web and React Native architecture
* Ported Omio's styleguide to React Native
* Covered main user flows with E2E tests

My responsibilities:
* Combined Engineering Manager and Product Manager roles
* Set up processes and development practices
* Individual career development of team members
* Oversaw technical direction and architecture of our systems
* Led Frontend Chapter - a company-wide forum for Frontend engineers to share
knowledge and align on architectural decisions
* Built and kept the team's roadmap updated

Direct reports: 8 software engineers

Engineering Manager - Checkout team

Omio

Internet & IT

500-1000 team member

* Built Frontend architecture enabling checkout flow for 500+ bus, train, and flight
providers
* Integrated 8 payment methods
* Enabled 5 other teams to add their functionalities into the checkout flow

My responsibilities:
* Set up processes and development practices
* Individual career development of team members
* Oversaw technical direction and architecture of our systems
* Established Frontend Chapter - a company-wide forum for Frontend engineers to
share knowledge and align on architectural decisions
* Led development and adoption of Omio's UI Styleguide - a library of React
components used across all Omio's Frontends

Direct reports: 4 software engineers

Tech Lead - Frontend

Omio

Internet & IT

500-1000 team member

Frontend Engineer

Multiple companies

Internet & IT


Portfolio


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