Position: Senior software engineer / Independent consultant
Category: Node.js
Experience: 11 years | English: fluent

Experience: 
- Design and implementation of a few ERP/CRM systems. These systems were designed from scratch.
- Online ordering system for big internet shop (4M customers, up to 60 orders per second). The highly available system with autoscaling that can interchange order lifecycle messages with over 50 suppliers via different transports and protocols(HTTPS, (S)FTP, SOAP, EMAIL, direct DB access, RabbitMQ etc.). Flexible message mapping with the support of almost any message format.
The main challenge was to make it completely configurable from the WEB interface without any coding. It was accepted and implemented.

Gradual architecture refactoring of all subsystems of an extensive online shop by moving these subsystems(imports, ordering, document processing) to event-based architecture. I've designed, presented, and convinced all parties to start this process.

SPA for predicting coverage of the RFID system. Floorplan builder, calculating and rendering heatmap in real-time.
A lot of graphics, including SVG/Canvas. Time performance optimizations.

Refactoring and moving infrastructure into the cloud(AWS) of HRMS. Splitting giant old monolith into microservices with upgrading all dependencies to contemporary state-of-the-art solutions.
Introducing CI/CD based on Bitbucket pipelines and Kubernetes/Docker for the development process.
Gradual migration to the event-based system.

IoT-based solution for managing and process optimisation in the Fitness industry. Design/Implementation of the whole project ecosystem and evolution of it from PoC to a ready solution

All mentioned above stuff is in production.
Good atmosphere in my teams.
Found and grown a few Trainee/Junior to Seniors
I've been programming since mid 90th as a hobby. 
Since 2005 I've been programming for commercial purposes (assembler, C, VB, PHP, JS, Python, Lua, GoLang)
Since  2009 I have been in WEB systems development.
List of main technologies I've used and had commercial experience with:
PHP: Symfony 4, Lumen, Slim, Yii(1,2), Kohana, demons
FE JavaScript(TS): React, D3, Ember, Marionette, Vanilla 
BE JavaScript(TS): Express, HapiJS, TSOA, Objection.js, Knex.js
Python, Lua: Automation and optimization of the time-consuming tasks and processes 
DB:  PostgreSQL(+Timescale), MySQL, MongoDB, Influx
Queues Management: RabbitMQ, AWS SQS, MQTT(Mosquitto)
Cloud AWS: IAM, RDS, EC2, Spots, Route53, ELB, ECR, SQS, S3, Lambda, ELB etc..
General stuff: Docker, Kubernetes, Redis, Digital Ocean
Management: Git, Bitbucket, GitLab, Jira, Redmine
CI/CD: Bitbucket pipelines, GitLab pipelines, AWS ECR, AWS Lambda, a bit of Jenkins
Common WEB related: REST, GraphQL, JWT, OpenAPI
Sure thing, after 15+ years in the industry, I know a lot more fancy words and names, but I'm not sure they are worth mentioning here :)
A lot of experience with SPA and REST backend, distributed systems, and microservices.
Like to decipher the legacy code, but only to remake it in a good way.
Experience with building projects from scratch, same as gradually refactoring big legacy systems by splitting them into microservices and changing technology stack.
Good knowledge and waste experience with SQL databases(mostly Postgres and MySQL) design, optimisation, refactoring etc.
Strong team player. I have been managing small development teams(3-10 members), able to listen same as to convince. Used to learn something new and share my knowledge with others. 
Experienced enough to understand what was meant by Edsger W. Dijkstra by "Simplicity is a great virtue, but it requires hard work to achieve it and education to appreciate it. And to make matters worse: complexity sells better."
Part-time/Freelance only.
The hourly rate in the profile is for reference. The real one is a subject of discussion and depends on a variety of things, and it could be less or more than the one from the profile.

WEB, ERP, CRM, HRMs, document processing and all related/similar stuff
IoT and related big data

Team/Tech Lead or Senior software engineer position
Full-stack WEB developer
DBA(Postgres/MySQL/MariaDB)
Dev-ops
Consultant in my field of expertise 

Not interested: 
  - russian companies/customers

Preferences:
  - The strong team of good people
  - A new project or complete refactoring of the old one
  - Freedom in choosing ways/technologies to solve problems(this should be at least discussable)
  - Compliance of the area of responsibility with the area of authority