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Petro Chaikivskyi
PHP Full-Stack Developer
Ternopil, Ukraine
[open contact info](look above in the "contact info" section)
Telegram: @petro_chaikivskyi
[open contact info](look above in the "contact info" section)
https://github.com/chaikivskyi/

SKILLS
Backend: PHP, Laravel, Symfony, NodeJs

Frontend: JS, React, Redux, TypeScript, AlpineJs, jQuery, KnockoutJs, RequireJs, CSS, SASS, Tailwind

Database & Cache: MySql, PostgreSql, DynamoDB, Redis, Valkey, OpenSearch, ClickHouse

Queue Engines: SQS, RabbitMQ, Redis, DB, Laravel Horizon

Cloud & DevOps: Docker, Gitlab CI/CD, Circle CI, DigitalOcean, AWS

Monitoring: Sentry, Datadog

AI-assisted development: Claude Code CLI

Ecommerce: Magento 2, Adobe Commerce, ScandiPWA, Hyva

EXPERIENCE

Thinksoft, Remote — PHP Engineer
Jul 2025 - Present

- Led architecture and delivery of a greenfield product from first commit to production launch, shipping
core features within the target timeline.

- Designed and built an AI workflow converting digital documents into structured data

- Built the pipeline for scale and observability from day one: SQS-backed jobs, DynamoDB, S3, Lambda,
and end-to-end tracing so failures surface before customers report them.

- Implemented integrations with third-party services and state registries, engineered around strict API
rate limits with backoff and queue-aware throttling, zero rate-limit incidents in production.

- Set up the team's Claude Code environment - project configuration, agents, skills and written guides
covering where AI assistance helps and where it misleads, adopted by 3 engineers.

- Partnered with DevOps and frontend to align infrastructure and delivery across the launch.

Skills: Laravel, PostgreSQL, Valkey, AWS, Cognito, SQS, DynamoDB, S3, AWS Lambda, SNS, SES, ECS.

Evestar, Remote, Part-time — Full-Stack Engineer (Laravel / React)
Feb 2025 - Jun 2025 (5 months)

- Took over a startup MVP after a previous team failed to deliver, stabilised it and shipped to production
in 3 months.

- Audited MVP requirements against the existing implementation, mapped the gaps, and produced a
delivery plan with realistic estimates that the team hit.

- Resolved critical defects and re-implemented several core features that were unsalvageable as written.

- Built staging and production environments on DigitalOcean with automated deployments via PHP
Deployer and Bitbucket Pipelines, replacing manual releases.

- Delivered a configurable notification system and Slack integration supporting external workspaces.

- Wrote a Node.js web bot that reliably bypasses Cloudflare protection and solves Google CAPTCHAs,
unblocking data collection workflow.

Skills: Laravel, ReactJs, NodeJs, DigitalOcean.

Frozeneon, Remote — Laravel Developer
Aug 2023 - Jul 2025 (1 year 11 months)

High-load social gaming platform, 100M+ registered users.

- Built and maintained the game processing and finalisation algorithms handling 1000+ games/day.

- Redesigned the Steam API integration around rate-aware queue workers, eliminated throttling failures
affecting thousands operations/day.

- Optimised database queries and indexing across the highest-traffic paths, cutting query time

- Designed the statistics collection pipeline and the interfaces presenting it, giving the product team
visibility into 10+ previously untracked metrics.

- Shipped platform features end to end on Laravel, REST APIs and Horizon-managed queues, monitored
in Datadog.

- Worked directly with frontend and design to keep the player experience consistent across releases.

Skills: Laravel, Horizon, Laravel Queue, Rest API, Blade, DataDog, ClickHouse

Monsoon Consulting, Remote — Lead Full-Stack Developer
Mar 2022 - Aug 2023 (1 year 6 months)

- Led a team of 3 developers building and supporting B2B and B2C e-commerce platforms for
international clients.

- Delivered dynamic B2B pricing (customer-tier and volume-based rules) on a Magento 2 storefront.

- Built CRM integration synchronising ⟨orders / customers / inventory⟩ between the storefront and CRM.

- Optimised backend performance across client sites, improving page load by 400%.
- Ran code review for the team and mentored 1 junior developer.

- Consulted directly with clients and stakeholders on technical requirements and architecture direction.

Skills: Magento 2, Hyva, ScandiPWA, PHP, MySQL, JavaScript, React, jQuery, CSS, Elasticsearch, Gitlab
CI/CD.

Elogic Commerce, Ternopil — PHP Full-Stack Developer
Feb 2021 - Mar 2022 (1 year 2 months)

Developed new features for a high-scale B2C e-commerce website with over 1 million products

Enhanced performance for product searching.

Integrated a third-party service to incorporate a Q&A feature

Implemented frontend performance optimizations, focusing on Core Web Vitals.

Developed Recurring Payments functionality for both PayPal and Stripe payment gateways.

Engineered an online document viewer

Skills: Magento 2, Symfony, PHP, MySQL, JavaScript, Elasticsearch, jQuery, CSS.

Plumrocket, Ternopil — PHP Developer
May 2018 - Nov 2020 (2 years 7 months)

Provided comprehensive support for customer e-commerce websites

Developed custom Magento 2 modules

Upgraded e-commerce platform for multiple clients

Skills: Magento 2, PHP, MySQL, JavaScript, Debugging.

EDUCATION

Ternopil Academy of National Economy, Ternopil— Master's degree, Computer Science
2019 - 2020

Ternopil Academy of National Economy, Ternopil— Bachelor's degree, Computer
Science
2015 - 2019

CERTIFICATIONS

AWS Certified Developer – Associate
https://www.credly.com/badges/bdde98eb-2694-456b-a02e-35c07c31d782
Date issues: July 18, 2026

AWS Certified AI Practitioner
https://www.credly.com/badges/f2265a78-dd22-4975-91d2-c33e9ec0ca90
Date issues: April 24, 2026

Zend PHP Certified Engineer 2025
https://www.credly.com/badges/840f3c84-3dc9-48b1-a455-0ce0032af406
Date issues: March 28, 2026

LANGUAGES

Ukrainian - Native

English - B2