Анатолій

Anatolii Polishchuk [відкрити контакти](див. вище в блоці «контактна інформація»)
[відкрити контакти](див. вище в блоці «контактна інформація»)
Senior Elixir Engineer | Backend & Full-Stack | github.com/anatoliip33
Elixir Mentor

Summary
Elixir developer with 10+ years of experience shipping and maintaining backend products end-to-end. Led
system migrations to Elixir, redesigned legacy architectures, optimized database performance, and owned
services in production environments. Delivered 50+ API integrations, mentored 20+ engineers, and built
scalable systems.

Skills
Languages & Frameworks: Elixir, Erlang, JavaScript, TypeScript, Ruby, Phoenix, LiveView, React, Node.js,
Ruby on Rails
Databases: PostgreSQL, MySQL, Elasticsearch, Redis, MongoDB
Web: HTML, CSS, REST, ES6
Tools & DevOps: Docker, Kubernetes, RabbitMQ, Nginx, CI/CD, Git, GitHub, GitLab
Testing: TDD, ExUnit, Rspec, UnitTest
AI: Claude Code, Codex, ChatGPT, Gemini
Other: REST APIs, GraphQL APIs, gRPC, Protobuf, Agile/Scrum, Mentoring, Documentation
Languages: English (professional, certified), Ukrainian (native)

Experience

Senior Elixir Developer (Seasoned Contractor)
07/2025 – 12/2025
Proca by Fix the Status Quo – an open-source digital action toolkit for campaigners that enables campaign
actions to be embedded on your website
● Implement a new email delivery algorithm to ensure reliable message distribution
● DB query optimization
● Engineered secure action confirmation workflows, improving data integrity and user
engagement within the campaign toolkit.

Technologies: Elixir, OTP, Phoenix, Ecto, ExUnit, PostgreSQL, RabbitMQ, GraphQL APIs, GitHub

Elixir Teacher/Mentor – Introduct Group Academy
02/2024 – 02/2025
Introduct Group Academy is designed to prepare developers for YOLO Group.
● Trained 25+ people in Elixir, resulting in 6 hires before course completion.
● Designed a mentorship program that increased student success rate by 40% and fostered
peer-to-peer learning.
● Integrated microservices, Protobuf, gRPC, and Oban into the curriculum to align with the client’s
technology stack and prepare students for real-world readiness.

● Authored weekly technical articles bridging communication between interns and stakeholders,
improving retention.
● Prepared interns for technical interviews through mock sessions and targeted feedback

Technologies: Elixir, OTP, Phoenix, Phoenix LiveView, Ecto, PostgreSQL, Oban, Protobuf, gRPC

Senior Software Engineer – RIA.com Group
12/2020 – 12/2024
RIA.com Group – leading online marketplaces in Eastern Europe
● Led migration of Autocentr Marketplace to a separate domain, improving system maintainability,
which led to a 20% growth of car sales.
● Integrated Creatio CRM and automated user contact widget using ChatGPT, reducing direct
communication workload for sales managers by 30%.
● Designed subscription systems and user tracking tools that increased customer engagement
by 20%.
● Spearheaded documentation and implemented 90% test coverage with unit/integration tests,
participated in code review.
● Rewrote the legacy Autoservice platform, improving performance by 30%.

Technologies: Elixir, Phoenix, MySQL, Nginx, Kubernetes, Docker, ReactJS, TypeScript

Middle Software Engineer – RIA.com Group
03/2017 – 12/2020
● Delivered a new search system for Auto Disassembly, which improved SEO ranking and
increased target calls by 30%.

● Developed user dashboards for tracking funds, boosting transparency and user retention

● Designed and implemented REST APIs supporting mobile applications and frontend clients.

Technologies: Elixir, Phoenix, Ecto, ExUnit, Elasticsearch, MySQL, JavaScript, REST API, GitLab

Junior Software Engineer – Digital Crafters
08/2014 – 12/2016
Digital Crafters — an agency specializing in e-commerce and marketing platforms.
● Developed Ruby on Rails applications supporting 10K+ monthly visitors.
● Optimized SQL queries, reducing page load time by 20%.

Technologies: Ruby, Ruby on Rails, MySQL, Rspec, JavaScript, REST API, Bitbucket

Education & Certifications
Master’s Degree, Construction Engineering - Vinnytsia National Technical University | 09/2003 – 07/2008

Professional Development
● Erlang Accelerator Program – 09/2025 – 12/2025
● Phoenix LiveView (The Pragmatic Studio) – 04/2025 – 05/2025
● Elixir & OTP (The Pragmatic Studio) – 03/2025 – 04/2025
● GDPR Data Privacy Awareness (GDPR Aware) – 03/2021 – 04/2021
● CS50 Introduction to Computer Science (Harvard University) – 03/2016 – 07/2016