Aliaksei Stohniy - Backend Java Developer With Spring

Recommended expert

Gdańsk, Poland

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Experience

Jul 2023 - Present

3 years 2 months

Backend Developer (Java)

naviparking.com

java 17
spring
hibernate
postgres
redis
aws (sqs, s3)
kubernetes

Apr 2022 - Mar 2023

1 year

Backend Developer (Java)

blynk.io

IoT project with high throughput: up to 200k rps, up to 50k devices online, single instance
Low-level usage of Netty (dynamic protocol detection, low-level concurrency handling etc)
Custom binary protocol for communication with devices
java 17, netty, websockets, custom binary protocol, clickhouse, maven
Implemented custom protocol for interacting with customer’s devices
Implemented order management system based on real-time data from devices from scratch
Improved company’s estimations approach, forced development to bring product earlier than required by the contract

Dec 2019 - Apr 2022

2 years 5 months

Backend Developer (Java)

viber.com

Advertising management backoffice API
java 11, spring, AWS services (ECS, RDS, DynamoDB, S3, SQS)
Implemented set of internal services (ads management, ad messaging API, reporting), thus improving interactions with company’s clients
Set up monitoring of current prod solution and improved prod environment
Contributed to code style approach in order to keep balance between happy developers and team efficiency

Mar 2018 - Dec 2019

1 year 10 months

Backend Team Lead

av.by

Classified ads site
symfony, MySQL, Redis, ElasticSearch, Logstash, Docker, PHPUnit, Behat
Built a new team from scratch
Designed a new system and interactions with frontend
Prepared specifications for backend team
Set up new team’s processes, contributed to solving communication issues with new departments
Handled migration from bare-metal to cloud provider, fixing cloud-related issues
Contributed to building new estimations / project management approach

Aug 2015 - Mar 2018

2 years 8 months

Backend Developer (PHP)

everhour.com

Time-tracking application integrated with most popular task tracking systems
symfony (PHP framework), MySQL, Redis, ElasticSearch, REST API, PHPUnit, Behat
Development team size: 4+

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Telecommunication, and Automotive.

Information Technology

Telecommunication

Automotive

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, and Project Management.

Information Technology

Product Development

Project Management

Summary

Backend developer since 2011.

Skills

Java, Spring, Spring Boot, Hibernate, Jdbc, Maven, Gradle, Netty
Postgres, Mysql, Clickhouse, Elasticsearch, Redis, Memcached
Docker, Kubernetes, Jenkins, Ansible, Argocd
Aws (Ecs, Rds, Dynamodb, S3, Sqs)
Elk, Grafana, Opensearch, Logstash, Newrelic, Prometheus
Http, Rest, Soap, Websockets, Tcp, Graphql
Rabbitmq
Java (4.5+ Years), Php (7 Years), C++ (1.5 Years), Erlang (0.5 Year)

Languages

Russian

Native

English

Advanced

Polish

Intermediate

Education

Oct 2009 - Jun 2013

BSUIIR

bachelor’s degree · Telecommunications Engineering · Minsk, Belarus

Statistics

Experience

Total positions 5

Experience in Information Technology 8.5 y

Avg length 2 y 2 m

Longest experience 3 y 1 m

Expertise

Recent roles Backend Developer (Java), Backend Team Lead, Backend Developer (PHP)

Main industries Information Technology, Telecommunication, Automotive

Main business areas Information Technology, Product Development, Project Management

Qualifications

Highest degree Bachelor

Profile

Created

September 2024

Last Update

September 2025

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Frequently asked questions

Have questions? Find more information here.

Aliaksei is based in Gdańsk, Poland and can operate in on-site, hybrid, and remote work models.

Aliaksei speaks the following languages: Russian (Native), English (Advanced), Polish (Intermediate).

Aliaksei has at least 11 years of experience. During this time, Aliaksei has worked in at least 3 different roles and for 5 different companies. The average length of individual experience is 2 years and 2 months. Note that Aliaksei may not have shared all experience and actually has more experience.

Based on recent experience, Aliaksei would be well-suited for roles such as: Backend Developer (Java), Backend Team Lead, Backend Developer (PHP).

Aliaksei's most recent position is Backend Developer (Java) at naviparking.com.

In recent years, Aliaksei has worked for naviparking.com, blynk.io, and viber.com.

Aliaksei is most experienced in industries like Information Technology, Telecommunication, and Automotive.

Aliaksei is most experienced in business areas like Information Technology, Product Development, and Project Management.

Aliaksei has recently worked in industries like Information Technology and Telecommunication.

Aliaksei has recently worked in business areas like Information Technology and Product Development.

Aliaksei holds a Bachelor in Telecommunications Engineering from BSUIIR.

Aliaksei is immediately available for suitable projects.

Daily Rate Distribution

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<€320 €320-400 €400-480 €560-640 €720+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

600

450

300

150

Daily rate avg. 519 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

600

450

300

150

Median rate 500 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.