Denis Sinitsa Email & Phone Number

Georgia

𝐏𝐫𝐨𝐟𝐢𝐭𝐞𝐫𝐨 is a SaaS commerce platform that uses predictive intelligence to help brands plan and automate actions for profitable growth.𝐀𝐜𝐭𝐢𝐯𝐢𝐭𝐢𝐞𝐬:◽️ Led a team of 10 backend professionals.◽️ Designed and developed core microservices to predict product categories and brands from eCommerce data. They used Redis for caching, ElasticSearch for full-text search, Snowflake as the analytics database, and MySQL as the primary database.◽️ Designed and developed a microservice for deduplicating products using an LLM model.◽️ Rebuilt a heavy service in Go (replacing Python) to preprocess products, saving almost $10k in annual infrastructure costs.◽️ Redesigned a service to save $20k annually by switching from an HTTP API to RabbitMQ for scheduling millions of products for scraping.◽️ Developed a Deploy repository for CD, ensuring a simple and reliable flow.◽️ Implemented SRE practices, including SLAs, SLOs, and team workflows to proactively address issues.𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤◽️ Languages: Python, GO, Bash, SQL◽️ Libraries: FastAPI, SQLAlchemy ORM, Pydantic, Pytest, logging, Pandas, Liquibase◽️ Cloud Platforms: AWS (EKS, CloudWatch, S3), GCP (GKE, Cloud Monitoring, Compute Engine)◽️ Databases: MySQL, SnowFlake, Redis, ElasticSearch◽️ Monitoring: Sentry, Grafana, Prometheus◽️ Deployment: Docker, Docker Compose, Kubernetes, Helm◽️ Messaging and caching: Redis, RabbitMQ◽️ IaC: Terraform

Cyprus

𝐄𝐦𝐛𝐫𝐢𝐚 is an international startup builder and investor (Playkot, Belka Games, AdTech Holding, etc).𝐏𝐫𝐨𝐣𝐞𝐜𝐭: Application for folks with chronic diseases.𝐀𝐜𝐭𝐢𝐯𝐢𝐭𝐢𝐞𝐬:◽️ Led a team of 6 backend developers.◽️ Architected the entire system, including the API Gateway, Kubernetes cluster, communication protocols, databases.◽️ Designed and developed multiple microservices from scratch (HTTP APIs for tracking user activities, sending push notifications, providing ML-based recommendations, implementing quizzes and etc.).◽️ Designed and implemented a service to sync DynamoDB and PostgreSQL databases, reducing reliance on 3rd-party solutions and saving $5k annually.◽️ Established a streamlined and automated CI/CD process for services.◽️ Implemented DDD approach, improving the scalability of features.𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤◽️ Languages: Python, GO, Bash, SQL◽️ Libraries: FastAPI, Chi, SQLAlchemy GORM, Pytest, logging, Pandas◽️ Cloud Platforms: AWS (AWS Lambda, CloudFormation, RDS, SNS, SQS, CloudWatch, S3)◽️ Databases: PostgreSQL, DynamoDB◽️ Monitoring: Sentry, Grafana, Prometheus◽️ Deployment: Docker, SAM◽️ Messaging and caching: SQS, SNS

Israel

𝐂𝐡𝐚𝐢𝐧𝐥𝐚𝐧𝐞 is a cloud-based RFID software platform for inventory management and control across the entire supply chain.𝐀𝐜𝐭𝐢𝐯𝐢𝐭𝐢𝐞𝐬:◽️ Designed the project architecture using AWS and created the relational database schema for the core backend.◽️ Developed the core functionality for the Django monolithic HTTP API, and designed AWS Lambda microservices for CRM integration and handling CSV-based reports.◽️ Developed a WebSocket service for receiving data from IoT devices.◽️ Built CI/CD pipelines for AWS Lambda microservices, using SAM and CloudFormation.◽️ Enhanced application delivery by implementing unit and integration tests for the core backend, reducing QA efforts during production deployments.𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤◽️ Languages: Python, Bash, SQL◽️ Libraries: Django, Django Rest Framework (DRF), Pytest, logging◽️ Cloud Platforms: AWS (AWS Lambda, CloudFormation, RDS, SNS, SQS, CloudWatch, S3, Redshift).◽️ Databases: PostgreSQL◽️ Deployment: Docker, SAM, ECS, EKS◽️ Messaging and caching: SQS, SNS, RabbitMQ

Belarus

𝐄𝐥 𝐏𝐢𝐱𝐞𝐥 is a tech company providing outstaffing services for global companies.𝐏𝐫𝐨𝐣𝐞𝐜𝐭: canadian based startup to get data and analytics for opening job positions in any areas, sectors.𝐀𝐜𝐭𝐢𝐯𝐢𝐭𝐢𝐞𝐬:◽️ Developed and maintained framework for data collection.◽️ Developed addons to collect data from famous vacancies resources. 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: ◽️ Languages: Python. Node JS, Bash, HTML, CSS◽️ Libraries: Koa, Puppeteer, Selenium, BeautifulSoup, Pytest, logging◽️ Cloud Platforms: Azure (Batch Explorer)◽️ Databases: MongoDB◽️ Deployment: Docker, Docker Compose◽️ Messaging and caching: Celery, Redis

Belarus

𝐂𝐢𝐤𝐥𝐮𝐦 is a tech company providing outstaffing services for global companies.𝐏𝐫𝐨𝐣𝐞𝐜𝐭: product for american baseball team to provide connections with social media.𝐀𝐜𝐭𝐢𝐯𝐢𝐭𝐢𝐞𝐬:◽️ Developed and maintained integrations with Facebook, Twitter.◽️ Rebuilt framework for developing integrations.◽️ Improved core functionality codebase.𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: ◽️ Languages: Python, Bash ◽️ Libraries: Flask, SQLAlchemy, Pytest, logging ◽️ Databases: PostgreSQL ◽️ Deployment: Docker, Docker Compose ◽️ Messaging and caching: Celery, Redis