Vitaly Kazimirov

Tech Lead building backends that thrive under load.

Senior Backend Engineer in Israel — architecture, performance, and delivery ownership for high-load product platforms.

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About

Technical depth with business judgment — from architecture to hiring and release readiness.

I specialize in evolving complex legacy environments into maintainable platforms: domain services, caching, async pipelines, and cloud infrastructure that stays cost-aware. Nearly two decades across business and high-tech help me align engineering decisions with product growth and operational stability.

Selected impact · Jane

Outcomes from owning the backend domain on a high-load e-commerce platform.

  • ~90% Legacy services rebuilt into modular architecture
  • 5× Lower database load via redesign and smart caching
  • 4× Growth in monetized product functionality
  • Event-driven flows with AWS SNS/SQS; real-time paths via WebSockets (Django Channels + Redis)
  • Analytics layer with PostHog / Google Analytics and internal replication for high-value events
  • Cross-functional remote teams across BE, FE, DevOps, and SecOps in four countries

Experience

Path from product ownership to tech lead.

  1. Tech Lead / Senior Backend Jun 2023 — Present

    Jane · Israel

    Technical owner of the backend domain: legacy modernization, performance, AWS environments, mentoring, and delivery from idea to production.

  2. Senior Python Developer May 2021 — May 2023

    Monkeytech · Israel

    Backend and fullstack delivery with Python (Django, Flask) and Node.js in production environments.

  3. Python Developer Mar 2020 — Apr 2021

    Invento Labs · Belarus

    Backend systems and API integrations with Python and Django for US-based enterprise clients.

  4. Python Developer Jun 2017 — Mar 2020

    Itransition Group · Belarus

    Full-stack applications with Python and Odoo; production backend design at scale.

  5. Business Owner & Investment Director Jul 2007 — May 2017

    Entrepreneurship

    Business and investment leadership — the foundation for cost-aware, product-aligned engineering decisions.

Technical expertise

Stack for high-load backends, data pipelines, and AI-assisted delivery.

Backend

Python (Django, Flask, FastAPI, Odoo), Node.js (Express, NestJS), APIs, WebSockets, event-driven services

Data & ETL

PostgreSQL, Redis, MongoDB, Elasticsearch, MS SQL · Kafka/MSK, SNS/SQS pipelines · analytics replication (PostHog / GA → internal DB) · pre-aggregation and cache invalidation

AI & tooling

LLM / RAG workflows · Cursor, GitHub Copilot, Claude Code · AI-assisted design, review, and delivery speed without sacrificing production discipline

AWS & delivery

ECS, RDS, EC2, S3, ElastiCache, Lambda, EventBridge, SES · Docker, Kubernetes, Terraform, GitHub Actions · security & compliance awareness

Résumé

Three focused CV versions — pick what fits the role.

Contact

Based in Israel — open to the next challenge.

LinkedIn, Telegram, or WhatsApp work best. Email is there if you need it — click to copy.

linkedin.com/in/vitaly-kazimirov
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B.Sc. Applied Computer Science · Belorussian University · graduated with honors