Дмитро

Dmytro Berezhnenko
Backend developer

About me Contacts
Passionate about so ware development, with 4 years of commercial [відкрити контакти](див. вище в блоці «контактна інформація»)
experience as a backend developer. I can work effec vely both in a team [відкрити контакти](див. вище в блоці «контактна інформація»)
and independently. My strong technical background and passion for
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technology enable me to quickly adapt to new environments and
challenges. I enjoy learning new things and sharing knowledge with Github
others.
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Employment history
Everstake, July 2024 – June 2026
Strong Knowledge
Stack: Golang, TypeScript, Rust, PostgreSQL, SQLite, Docker, AWS, GCP Golang
 Developed backend services for mul ple internal and customer-
SQL
facing pla orms, contribu ng to product development from concept and
R&D stages through produc on deployment. Docker
 Designed and implemented cloud-na ve solu ons across AWS and Git
GCP, including cross-cloud integra ons and systems with database-level
synchroniza on (pglogical). REST API
 Developed SDKs and proof-of-concept implementa ons for new gRPC
products, enabling rapid valida on of business and technical
requirements. Redis
 Built observability infrastructure using Prometheus and Grafana, Basic Knowledge
improving monitoring, troubleshoo ng, and opera onal visibility.
 Designed and implemented a fallback mechanism for cri cal Python
infrastructure outage scenarios, significantly improving system resilience Typescript
and proving valuable during produc on incidents.
Rust
 Worked on both established produc on systems and greenfield
projects, par cipa ng in architecture design, implementa on, and Languages
maintenance.
English (Advanced)
German (Intermidiate)
Envoys lab, January 2023 – June 2024
Stack: Go, gRPC, gRPC-Gateway, PostgreSQL, Redis, RabbitMQ, Docker & Ukrainian (Na ve)
Docker Compose, AWS Russian (Na ve)
Project descrip on: Centralized stock exchange
 Impelemented new features, such as authen ca on (JWT,
authen ca on via third party services, 2FA, TOTP, verifica on codes),
integra on with other services (banking systems, KYC valida on), AWS
integra on (moved locally stored files to buckets).
 Improved exis ng codebase: op mized database requests (ended up
crea ng ny query builder to automate and simplify op miza on), added
be er logging and error handling, covered code with tests.
 Collaborated effec vely with other developers to improve system
knowledge, pinpoint performance bo lenecks, uncover bugs, resolve
issues.
Freelance project, July 2023 – November 2023
Stack: Go (go-fiber, sqlc), GCP, Python, PostgreSQL, Docker & Docker Compose, Firebase, Vespa AI,
Swagger
Project descrip on: ChatGPT-like technical support
 Helped with transi oning of services from Python to Golang. I worked with Google Drive, GCP,
oauth2 integra on and docker containers configura on.
 Covered code with unit tests, created integra on tests for backend.

Freelance project, December 2022 - April 2023
Stack: C#(.NET Core 6, En ty Framework), PostgreSQL, Telegram API, Docker, Swagger, nginx, certbot
Project descrip on: Pla orm for Telegram adver sement sale/purchase
I was involved in design development; op mized database scheme and queries, app architecture;
integrated payment systems; developed mul ple features.

Distributed Labs, October 2021 - November 2022
Stack: Go (chi), PostgreSQL, Solidity, Rust, Typescript Docker & Docker Compose, IPFS, Swagger
I was involved in several projects, all of which were related to blockchains (Ethereum, Solana, Polkadot)
 Created microservices for interchain opera ons verifica on, transac ons building and integrated
them with other services.
 Developed smart contracts for DApps from scratch, created SDKs for frontends.
 Implemented features for legacy systems.
 Covered code with unit tests, created documenta on.

Freelance project, June 2021 - August 2021
Stack: C#(.NET Core 5, En ty Framework), PostgreSQL, Telegram API, nginx, certbot
Preject decrip on: Gambling bot for telegram
 System design.
 Designed a database, integrated a payment system, created admin panel and configurable
technical support chat with live logging and sta s cs. Created deployment scripts.

Educa on
Bachelor's degree in Cybersecurity, Kharkiv Na onal University of Radio Electronics
September 2018 – July 2022

Master's degree in Cybersecurity, Kharkiv Na onal University of Radio Electronics
September 2022 – January 2024