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Yaroslav Syvash
Backend developer

Experienced Golang developer with 5+ years of building scalable backend
systems, specializing in microservice architecture, real-time communica-
tion (gRPC, NATS) and systems in FinTech, Crypto and Blockchain. Proven
P ER S O N A L
track record of designing robust services from scratch, optimizing system
I N F O R M AT I O N performance, and mentoring team members. Strong focus on maintainable,
[открыть контакты](см. выше в блоке «контактная информация») well-tested code with practical application of clean architecture and SOLID

[открыть контакты](см. выше в блоке «контактная информация») principles. Comfortable working in cross- functional teams, communicating

Ukraine, Odesa directly with stakeholders, and driving product-oriented development.

Stack:
SKILLS
API Development (gRPC, Gin, Echo, Fiber
graphQL, REST, NATS Jetstream/KV, rabbitMQ
WebSocket)
Docker, Docker Compose, AWS (S3, SES, SNS, SQS, MediaConvert), GCP,
Microservices
Architecture ffmpeg, Prometheus, Grafana, Loki
Database Management Testify, Mockery
(PostgreSQL, MongoDB,
LiqPay, PayPal, Stripe, Fondy, WayForPay
Redis)
Cloud Platforms (AWS, GitHub, GitLab, Bitbucket, Jira, Confluence, Notion
GCP)
Version Control
Unit Testing

L A N G U A G ES
English - Intermediate
Ukrainian - Native
Experience

BNA Canada, Aurora
Backend developer 2025-11 - Present

1. Project XEPPT

Digital payments platform designed for consumers in Canada, offering a se-
cure and convenient way to manage personal or business finances through a
personal or business wallet.

Designed and implemented gift card functionality, including issuance,
redemption, and lifecycle management;

Developed and integrated payment workflows, enabling payments as a
core platform feature;

Built a user review system integrated with a loyalty program for auto-
mated points accrual;

Integration with a new banking provider, ensuring secure and reliable
payment processing;

Performed refactoring and performance optimizations to improve sys-
tem maintainability and efficiency;

TheTrippleOne Portugal, Lisbon
Backend developer 2024-10 - 2025-12

1. Market maker project.

Designed, developed, and maintained high-performance cryptocur-
rency trading bots with integrations across multiple exchanges
(Binance, ByBit, BitMart, OKX, WhiteBit, KuCoin, XT, Gate, etc.) and
blockchain networks;

Implemented and optimized market-making and arbitrage strategies
with a focus on latency, execution efficiency, and risk management;

Improved system reliability through performance tuning, memory
optimization;

Extended existing architecture by developing new microservices and
expanding platform functionality;
Aumify Ukraine, Zaporizhzhya
Backend developer 2023-06 - 2024-10

1. Project Amabit.

I was involved in developing trading functionality from different exchanges:

Deposit/withdrawal/transfer of funds, history;

Implementation of creating different types of accounts (investment,
trader, manager);

Trading terminal (charts, opening/closing orders, positions, etc.), ex-
tended statistics for each account, trading history;

Testing coverage, managing a team of 4 developers, implementing a mi-
croservice architecture;

Infocoin Ukraine, Zaporizhzhya
Backend developer 2022-01 - 2023-04

1. Video Service Platform

Integration of payment systems (LiqPay, PayPal, Stripe, Fondy,
WayForPay);

Message delivery via mail service and mobile devices AWS SES, SNS;

Authorization via social networks;

Collection of detailed statistics on video viewing;

Video processing via ffmpeg and media converter AWS;

Admin panel functionality for video moderation and system settings;

Connection of monitoring systems such as Sentry, NewRelic;

Data storage on AWS s3;
UDTech Ukraine, Zaporizhzhya
Junior backend developer 2021-06 - 2022-01

1. Project Jewel auction.

Administration panel with adding/removing lots;

Adding/removing an auction;

Refactoring;

Uploading auction results to an Excel file;

Test coverage, Swagger integration;

1. Accounting system.

Analysis of the existing system, transition from server-side rendering;

Adding new functionality to the existing one;

Filtering, working with documents;

Role-based system for each user with access rights;

Education

Zaporizhzhia Polytechnic National University Ukraine, Zaporizhzhya
Bachelor of Computer Science 2014-09 – 2017-06