Location: Poland

Rate: 6000 usd netto

ABOUT

I'm a team leader and a backend developer who can create well-designed back-end and have a few experience in creating UI. I'm interested in high performance concurrent systems. Usually I use Perl/Python for my work but i have experience with Go, Javascript. I am open-minded for new technologies and love trying new products.

SKILLS SUMMARY

Technical Skills:

• Including Modern Perl (Moose , DBIx::Class , etc) , AnyEvent , Coro , Catalyst, Mojolicious , Kelp
• Good knowledge and experience with Python 3(asyncio , aiohttp)
• Good knowledge of algorithms and data structures
• Expertise in object-oriented design: design patterns, SOLID
• Good knowledge and experience with Go
• JavaScript
• HTML/CSS
• Basic knowledge and experience of Java, C++, PHP
• Database design and developing with Mysql, PostgreSQL, MongoDB, CouchDB, Redis , ElasticSearch , Clickhouse
• Version control systems : Git, Subversion - Protobuf , YAML , JSON

Professional Experience

Position: Team Leader

2021 – Present

Responsibilities:

• Lead team of 4 engineers. Decompose tasks. Delegate tasks and set deadlines.
• Motivate team members. Designing solutions along with my team.
• Participating in development as well.
• Discover training needs and provide coaching. Listen to team members’ feedback and resolve any issues or conflicts.

Position: Senior Software Engineer

2016 – 2021

Responsibilities:

• designed high performance database backend for storing statistic data based on ClickHouse database , designed and realized backend for storing logs using Elastic search stack and retrieving computed data by server written on Python.
• developed high performance task executor written on Python3 using asyncio and communicating due binary protocol (Protobuf)
• designed and developed high performance distributed backend application (Python3 , Go)
• reverse proxy with authentication, authorization and routing requests written on Go.

Tools & Technologies:

• Perl , modern Perl( Moose, Catalyst, DBIx::Class , AnyEvent ) , Python(aiohttp,asyncio) , Go, JavaScript .
• Databases : Mysql , Percona, ClickHouse , ElasticSearch.
• Message brokers: RabbitMQ.
• Developing technologies : OOP , asynchronous and synchronous approach , parallel programming approach .
• Writing tests to cover API libraries and API over http (json-rpc).

Position: Senior Perl Developer

2010 – 2016

Responsibilities:

• Went from beginner in Perl to senior developer; I took part in designing and development a lot of different applications including high performance and reliable ones designed with using microservices .

Tools & Technologies:

• Perl , modern Perl( Moose, Catalyst, DBIx::Class , Mojolicious) , Lua ( for writing stored procedures in Redis ).
• Databases : Mysql , Postgresql + csstore_fdw, Redis.
• Developing technologies : OOP , asynchronous and synchronous approach , parallel and concurrent programming( using Coro , fork ) , writing REST full API , writing microservices communicated via queues.
• Writing tests to cover API libraries and REST api's.