Антон

Anton Samokhvalov
PHP Backend Developer
[open contact info](look above in the "contact info" section) • Telegram • LinkedIn • Zaporizhzhia, Ukraine / Remote

PROFILE
PHP Backend Developer with 6,5 years of commercial experience in fintech, payment systems and
large event-management platforms. Strong in PHP 8/7, Symfony/Laravel, SQL, queues, REST APIs,
automated testing. Particularly interested in maintainable architecture and the practical application
of OOP, SOLID, design patterns, in DDD and Hexagonal Architecture. Experienced in high-
throughput, event-driven systems where idempotency, race conditions, replication lag and failure
recovery matter. Use AI coding agents for planning, implementation, testing and documentation
under close review.

CORE SKILLS
Backend: PHP 8/7, Symfony, REST API, Yii2, Laravel, Phalcon
Architecture: OOP, SOLID, GRASP, DDD, design patterns, Hexagonal Architecture, CQRS, microservices
Data & messaging: PostgreSQL, MySQL, Redis, RabbitMQ, AWS SQS; working exposure to ClickHouse,
ElasticSearch
Quality: PHPUnit, functional / integration / unit testing, PHPStan, strict typing, PSR-12.
Infrastructure: Docker, Git, Composer, Python, C++, Linux, Bash; basic operational use of Kubernetes
and AWS
AI-assisted development: Claude Code, Codex, MCP, creating skills, workflows, RAG, ADR context.

EXPERIENCE
Middle PHP Backend Developer Feb 2025 - Present
Aventus IT | Fintech products
• Developed and maintained fintech products with Symfony 6.4 and PHP 8.2/8.3 across bank
integrations, payment flows, internal tools and credit-bureau services.
• Delivered 4 integrations end-to-end and contributed to several others, including bank APIs, credit
bureaus, Diia Multisharing and 3-D Secure payment flows.
• Built asynchronous RabbitMQ workflows with retries, deduplication, chunked processing, progress
tracking and resilient recovery.
• Refactored high-risk payment and reporting legacy code using characterization tests, incremental
releases and the chunked deployment to reduce regression risk.
• Created an internal financial-events calendar with complex dynamic recurrence rules, automatic
event generation and notifications.
• Took sole ownership of a small fintech project, acting as architect and primary developer; prepared a
modernization roadmap covering PHP/Symfony upgrades, critical-flow tests, health checks and
internal log monitoring.
• Maintained high code-quality standards through multi-tier tests, linters.
• Built project knowledge bases and ADR context for AI agents; created reusable workflows, skills and
instructions for Claude Code and Codex using MCP and subagents, with step-by-step human review.

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Middle PHP Developer Aug 2024 - Dec 2024
Paymentop | Fintech payment platform
• Worked on a payment aggregation platform built with microservices, Event Sourcing, CQRS,
Hexagonal Architecture and strict code-quality standards.
• Developed and extended checkout and payment APIs, including customer validation, commission
distribution settings, audit logging and OpenAPI documentation.
• Improved fraud-prevention, payout, settlement and pre-check workflows and fixed production issues
in transaction search and internal support tools.
Backend Developer Mar 2024 - Aug 2024
Sintegrum | EdTech
• Developed educational platform and its co-projects with frameworks: Laravel, Yii and Symfony.
• Maintained async functionality based on RabbitMQ.
PHP Backend Developer Sep 2021 - Mar 2024
ExpoPlatform | Large event-management platform
• Improved platform architecture by centralizing permission checks, redesigning model caching and
URL handling, migrating legacy components and covering the new code with unit tests.
• Initiated the adoption of DDD practices, suggested strict typing approaches to the team, structured
exception hierarchy and a roadmap for improving platform stability.
• Extended an email-campaign engine with reusable recommendation widgets, campaign statistics,
templates and REST APIs.
• Modernized the roles and permissions subsystem with a role-inheritance matrix and bitmaps.
• Refactored report generation into a restart-resistant asynchronous flow with chunking and progress
tracking; significantly reducing boilerplate code, required for new reports.
• Rewrite badge generation and printing, introducing universal badge models, batch PDF export.
Junior PHP Developer Mar 2020 - Sep 2021
Together Networks | Payment department
• Led a complex PayPal subscription integration and designed a webhook-based flow for registering
recurring payments initiated by PayPal.
• Worked with billing, subscriptions, antifraud flows and payment-provider integrations.
• Contributed as the system was migrated from Yii to Symfony, with particular focus on Symfony DI;
used Docker for local development and Jenkins to track deployments.

EARLIER IT EXPERIENCE
IT Infrastructure & Telecommunications 2007 - 2020
PrivatBank | Deputy Department Chief
• Progressed from technical support and system administration to Lead Telecommunication Specialist
and Deputy Department Chief.
• Ensured network connectivity for 110 bank branches across 25 towns and approximately 800 ATMs;
maintained network infrastructure in the central server room and regional head office.
• Maintained extensive daily communication with hundreds of employees, technical teams, providers and
business stakeholders, coordinating incident resolution and regional infrastructure operations, like
organizing tenders.
• Used Linux and Bash automation and worked extensively with bank departments, partners and
service providers.

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EDUCATION
Specialist (Master) Degree - Computer Networks and Systems 2006 - 2008
Zaporizhzhia Institute of Economics and Information Technologies | Diploma with honors
Academic project: implementing an alrorithm for calculating optimal transport routes.

Junior Specialist - Computer and Intelligent Systems and Networks 2002 - 2006
Zaporizhzhia Aviation College | Diploma with honors
Academic projects: creation and training of a neural network; development of a custom data-
compression algorithm.

LANGUAGES
Russian, Ukrainian: Native
English: B1/B2 spoken communication; B2 technical reading and writing. Lived and worked in USA.

ADDITIONAL
Teamwork: Open and collaborative communicator who proactively suggests improvements and
supports teammates.
Interests: Running, chess.

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