Yuriy N.
Backend Developer
He has extensive expertise in databases, cloud platforms, containerization, and message queues, building scalable and reliable systems monitored with tools like DataDog.
He played a key role in developing a high-load Ads system for the web, implementing performance optimizations that reduced infrastructure costs by 20–30%, integrating monitoring and code quality tools such as DataDog and SonarQube, and improving overall system stability.
In addition to his technical contributions, Yurii mentored junior developers, led knowledge-sharing sessions, and supported the growth and development of engineering teams.
Main expertise
Golang8 years
Git12 years
SQL10 years
Redis10 yearsExperience6
Golang Developer
- Contributed to the development and scaling of a real-time ad bidding platform built on a modern microservices architecture as part of a high-performing team.
- Developed and maintained backend services in Golang, exposing both RESTful APIs and gRPC for high-performance communication.
- Deployed services on AWS EKS to ensure scalability, resilience, and efficient resource utilization.
- Leveraged Redis for caching and optimizing data access in latency-sensitive components.
- Integrated third-party platforms such as Kevel for ad serving and LaunchDarkly for feature flag management to enhance system flexibility and control.
- Led initiatives to improve system stability, increase observability, and optimize resource consumption by 20%, delivering performance and cost benefits.
- Maintained high code quality through active participation in code reviews and adherence to best practices.
- Took ownership of major features, drove development initiatives within the domain stream, and mentored junior developers while supporting onboarding of new team members.
JavaScript
MongoDB
Docker
PostgreSQL
AWS
Golang Developer
- Contributed to the design and development of a real-time fraud detection system on a microservices architecture, collaborating with data analysts and engineers to deliver scalable services that supported fraud alerting and case investigations.
- Developed and maintained backend services in Golang, exposing APIs for both real-time and batch fraud analysis workflows.
- Worked with MongoDB and PostgreSQL to manage structured and semi-structured fraud case data.
- Implemented an event-driven architecture with Kafka and NATS to enable asynchronous communication between microservices.
- Deployed services on Kubernetes to ensure scalability, resilience, and optimal resource usage.
- Partnered with data teams using Databricks to analyze transaction data, detect fraud patterns, and implement automated alerting mechanisms.
- Participated in architectural discussions to shape new fraud detection features and maintained high code quality through code reviews and adherence to best practices.
MongoDBDockerPostgreSQLAWSGolang
PHP Developer
- Built and maintained internal tools and client-facing APIs using Symfony (PHP) and Golang, focusing on performance, integrations, and efficient data handling.
- Developed backend features with Symfony for core platform functionality and implemented a Golang-based microservice to manage multiple third-party API calls and response mapping.
- Designed and implemented a hierarchical admin system for clients, groups, and offices in MongoDB, leveraging the lookup operator to merge parent data and construct tree structures.
- Improved MongoDB query performance through strategic indexing.
- Integrated third-party provider APIs and developed custom REST APIs for external clients, employing JMS Serializer to convert JSON into domain entities.
- Enhanced caching and system performance using Memcache and Redis to reduce load on primary data sources.
- Maintained code quality by writing unit tests with PHPUnit and participating in code reviews.
- Contributed to frontend rendering with Mustache templates within Twig, enabling dynamic updates via Ajax.
- Took ownership of delivering large features and epics to production, ensuring smooth deployments and ongoing support.
PHP
Symfony
MySQLMongoDBDocker
PHP Developer
- Developed the backend for a mobile-focused dating application, implementing a REST API and using ElasticSearch as the core geo-search engine for location-based discovery.
- Integrated AWS SQS to handle asynchronous tasks such as uploading user images and videos to S3 and updating user indexes in ElasticSearch.
- Achieved 86% unit test coverage using the Kahlan testing framework.
- Implemented real-time messaging functionality by integrating the QuickBlox API.
- Designed services based on microservices architecture and Onion Architecture principles, emphasizing Domain-Driven Design.
- Leveraged Redis with pipelining and hash tables to ensure fast and efficient key-value data retrieval.
- Employed a Canary deployment strategy to safely roll out new features in production environments.
- Conducted code reviews and wrote comprehensive technical documentation for the REST API.
PHP
YiiSymfonyMySQLJavaScript
PHP software engeener
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Created and supported web projects built with Drupal 7, Laravel 5, and WordPress, contributing as a PHP developer to high-profile media clients including Nascar, Nascar Green, and Vin Diesel;
-
Developed functional UI autotests and implemented data validation by comparing client feeds (XML, JSON, Protobuf) with internal changes to ensure accuracy and consistency;
-
Wrote functional tests for the AS Roma football team’s website and contributed new features to the company’s own website;
-
Configured and maintained CI pipelines with Bamboo for Behat autotests, including upgrading Behat from version 2.5 to 3.0;
-
Performed code reviews to maintain quality standards and integrated third-party APIs into client and internal systems.
PHP
LaravelMySQL
NGINX
HTML
PHP software engeener
-
Contributed to creating and supporting new portal functionalities for markets including Kazakhstan, Nigeria, and Azerbaijan, with a focus on the music section;
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Worked on a HighLoad project handling over one million views per day, 200,000 unique users, and a database exceeding 800,000 records;
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Suggested new features and collaborated with the Product Owner and Team Lead to refine project requirements;
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Improved website performance by optimizing response times and implementing caching strategies with Varnish;
-
Utilized FFmpeg for audio file conversion and managed job queues with a German queue manager to efficiently load files onto servers;
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Developed cron jobs to parse new content and implemented logic to detect and remove duplicate audio files based on metadata, file checksum, and duration;
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Replaced the existing SphinxSearch engine with ElasticSearch to enhance search capabilities;
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Authored functional test scenarios using Behat to ensure quality and reliability.
PHPMySQLRedisNGINXHTMLEngineering excellence
All Backend Developers who have applied to Proxify are scored from 0 to 300 on engineering excellence, one of the five parameters we evaluate. This score reflects engineering excellence only, based on interviews, take-home assignments, live coding sessions, and/or on-the-job performance reviews. The curve shows how all evaluated Backend Developers are distributed across that range, where our acceptance threshold for this parameter sits, and where Yuriy stands.
Score 173 · Top 18% of engineers
Certificates 5
Issued Nov 2021
Google CloudIssued Nov 2021
Google CloudIssued Nov 2021
Google CloudEducation
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