Arkadii Balandin

senior

Registration: 17.07.2024

Specialization: Software Engineer

Docker Elasticsearch Git HTML JavaScript MongoDB MySQL Node.js PostgreSQL Python React Redis REST SQL TypeScript Kubernetes Kafka

Portfolio

Visitech

● Wrote from scratch several new fullstack apps related to employee management for industrial plants. Backend: Node.js, TypeScript, frontend: React.js, TypeScript, database: PostgreSQL. Result: new products ready to be sold to new and existing B2B‑customers. ● Developed and integrated a logging system for all existing apps. Result: real‑time analysis of performance. ● Containerized into Docker several legacy apps.

Valletta Software Development

● Developed from scratch (initial stages as a principal developer, then assembled a team of 2 additional developers) an application using Nest.js (microservices architecture for a project related to IoT). ● Implemented performance monitoring and optimized critical business components through Redis caching and MongoDB indexing. ● Utilized Kafka Connect. ● Established a business process logging system. Enhanced the existing CI/CD system. ● Result: The product achieved approximately 100 times faster performance compared to the previous generation + stability and full compliance with specifications were achieved. ● In other projects: Created a video streaming project from scratch (similar stack with microservices and websockets, RTCDataChannel, Kafka, stream recording via ffmpeg, etc.), continued project development by forming a team of 2 developers while remaining in the role of tech lead and developer.

Florist

● Wrote from scratch a complete mass mailing system with personalization, triggers, generation of personalized e‑mail messages for the online shop. Stack: Node.js, MySQL. Result: up to 10% more profit per month for the company due to boost of the incoming traffic. ● Wrote analytics scripts for the department of marketing. Stack: Node.js, MySQL. Helped marketing and financial specialists automate their Excel reports using VBA.

Skills

JavaScript

TypeScript

SQL

MySQL

PostgreSQL

NoSQL

Python

Docker

MongoDB

Node.js

NestJS

Express.js

Redis

React

React.js

HTML

REST

Kubernetes

GraphQL

Kafka

Elasticsearch

ES6

Socket.io

WebRTC

Git

GitHub

Backend

Work experience

Tech lead / Lead Backend Developer

since 05.2022 - Till the present day |Sharp Developers

Nest.js, Redis, MongoDB, Kafka, CI/CD, Websockets

Fullstack Developer

01.2021 - 05.2022 |Visitech

Node.js, TypeScript, React.js, TypeScript, PostgreSQL, ElasticSearch, Docker

Fullstack Developer

11.2018 - 01.2021 |BGsoft

Node.js, Express.js, Python, React.js, Next.js, PostgreSQL, Triggers, Nginx, Docker

● Developed a full‑stack white‑labeled dashboard. Backend: Node.js, Express.js, Python. Frontend: React.js / Next.js. Databases: PostgreSQL, triggers. Orchestration: Nginx, Docker. Wrote modules for integration of the dashboard with external websites, developed a standardized API for such interaction. Challenge: developed an ORM with dynamic complexity of resulting queries. Frontend: developed a visual interface to build queries of arbitrary complexity. ● Soft skills: wrote deployment instructions and taught a junior DevOps engineer to deploy the dashboard on new servers. Cloud virtual servers (Hetzner), caching/DDoS protection (CloudFlare), GoDaddy (hosting). ● Soft skills: regularly presented the developed product to B2B‑customers, discussed development of new features. ● Result: new fully functional product ready to be sold to customers.

Developer

03.2016 - 11.2018 |Zenitbet

Golang, Express.js, React.js, Node.js, Express.js, Pug, MongoDB

● Wrote a casino (iGaming) framework from scratch (several gaming providers, payment providers). Go (Golang), Express.js, React.js. New product with immediate profit. ● Developed analytics dashboards for the marketing department. Back‑end: Node.js, Express.js. Front‑end: Pug. Database: MongoDB. Integration with the company’s central database, with front‑end analytics scripts. Wrote business‑specific user tracking scripts. Result: huge savings for the company due to better analytics of the website and its traffic. ● Deployed a mass mailing system, integrated via its API various services of the company. Automated creation of personalized email messages: started storing customers’ new aggregated parameters, created scripts for building personalized images on the fly to be used in email messages. Result: +50% profit for the company due to a new customers’ loyalty system.

Open-source Volunteer Developer

12.2013 - 12.2022 |Open source contribution

JavaScript, Node.js, Tailwind CSS, Webpack, React.js, Next.js, Parsing, Graph Theory, Nest.js, Python

● 2013: Created a chat bot, published the code on Github. ● 2018: Created a "bridge" app connecting various messengers so that each other the community could use any messenger they like and still talk to people from other messengers, published the code on Github. ● 2021: Created lojban.pw static website (open-sourced) using React.js, Next.js, Tailwind CSS, Webpack and various self-written compilation scripts, published code on GitHub. ● 2022: Using PEG grammar, various graph visualization libraries built a simple app displaying syntax trees of the Loglan language. ● 2022: Compiled a text-to-speech app in Python. ● 2022: Created a sample Nest.js project to be used as a boilerplate.

Analyst

09.2013 - 03.2016 |Florist

Node.js, MySQL

Educational background

Genetics (Masters Degree)

2001 - 2006

Kazan State University

Languages

EnglishProficientRussianNativePortugueseIntermediateFrenchElementaryHebrewElementary