Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I'm Yauheni Litvinau, a senior software engineer delivering Python backends and React/Angular frontends with a focus on scalable APIs, accessible UIs, and robust tests. I design clear API contracts, build fast, reliable UIs, and ship with confidence using CI/CD practices. I work with PostgreSQL/Redis/Elasticsearch, Kafka/RabbitMQ, and cloud on AWS/GCP/Azure. I enjoy hands-on with RAG/LLM features when they add real value and strive for inclusive UX and maintainable code.…I'm Yauheni Litvinau, a senior software engineer delivering Python backends and React/Angular frontends with a focus on scalable APIs, accessible UIs, and robust tests. I design clear API contracts, build fast, reliable UIs, and ship with confidence using CI/CD practices. I work with PostgreSQL/Redis/Elasticsearch, Kafka/RabbitMQ, and cloud on AWS/GCP/Azure. I enjoy hands-on with RAG/LLM features when they add real value and strive for inclusive UX and maintainable code.

Yauheni Litvinau

Full Stack Developer, Back-End Developer, Front-End Developer, +2





I'm Yauheni Litvinau, a senior software engineer delivering Python backends and React/Angular frontends with a focus on scalable APIs, accessible UIs, and robust tests. I design clear API contracts, build fast, reliable UIs, and ship with confidence using CI/CD practices. I work with PostgreSQL/Redis/Elasticsearch, Kafka/RabbitMQ, and cloud on AWS/GCP/Azure. I enjoy hands-on with RAG/LLM features when they add real value and strive for inclusive UX and maintainable code.…I'm Yauheni Litvinau, a senior software engineer delivering Python backends and React/Angular frontends with a focus on scalable APIs, accessible UIs, and robust tests. I design clear API contracts, build fast, reliable UIs, and ship with confidence using CI/CD practices. I work with PostgreSQL/Redis/Elasticsearch, Kafka/RabbitMQ, and cloud on AWS/GCP/Azure. I enjoy hands-on with RAG/LLM features when they add real value and strive for inclusive UX and maintainable code.

Available to hire

I’m Yauheni Litvinau, a senior software engineer delivering Python backends and React/Angular frontends with a focus on scalable APIs, accessible UIs, and robust tests. I design clear API contracts, build fast, reliable UIs, and ship with confidence using CI/CD practices.

I work with PostgreSQL/Redis/Elasticsearch, Kafka/RabbitMQ, and cloud on AWS/GCP/Azure. I enjoy hands-on with RAG/LLM features when they add real value and strive for inclusive UX and maintainable code.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer at RED Global

March 1, 2023 - March 1, 2023

Project: Enterprise Admin Platform (multi-tenant; React + Angular apps over Python microservices). Frontend: Built React 18 + Next.js App Router surfaces, used TanStack Query with SSR prefetch/dehydrate, and kept bundle budgets under 200 KB gzipped. Implemented complex forms with React Hook Form + Zod, with optimistic updates and rollback. Delivered Angular 18 admin tools with Standalone Components and Signals, wired NgRx selectors, and documented components in Storybook aligned to Figma. Implemented i18n, WCAG 2.2 AA accessibility, and a PWA offline shell for field use; public pages included SEO metadata. Backend: Exposed domain APIs with FastAPI 0.115.x and Django 5.1 + DRF 3.15, with Redis caching and tenant-scoped data. Orchestrated event-driven workflows with Kafka 3.x (outbox) and RabbitMQ 3.13; long jobs via Celery 5.4 with idempotent task keys. Published OpenAPI and GraphQL schemas; generated typed clients; added internal gRPC for service hops; applied OpenTelemetry tracing.

Senior Software Engineer at S&P Global

November 1, 2019 - November 1, 2019

Project: Markets Analytics (finance; low-latency ingestion + rich web UI). Migrated legacy systems to React and modern Angular, introduced granular i18n and accessibility, and kept first content paint snappy on low-end devices via SSR/prerender. Frontend analytics views used Visx/D3 for charts; background revalidation handled by SWR/TanStack Query. Backend: Django 5.0 + DRF 3.15 with strict permissions and PHI-safe logging; light FastAPI edge for telemetry/webhooks. Data and search: Elasticsearch 8, TimescaleDB on PostgreSQL, Redis for hot paths; gRPC internal for low-latency service hops; GraphQL (Ariadne) for flexible clinician dashboards; SSE for progress streaming; batch ETL moved to Airflow 2.9 nightly.

Web Developer at EPAM Systems

January 1, 2016 - January 1, 2016

Project: Multi-Brand Commerce (micro frontends + Python platform). Built Angular 8–12 apps (migrating from AngularJS), standardized Reactive Forms, Router guards, Nx libs, Module Federation, and Storybook docs. Implemented i18n, WCAG-compliant focus and contrast, and SSR/prerender for SEO-critical pages with a small PWA shell for offline use. Backend: Django 4→5 for catalog/admin and DRF for orders/payments; FastAPI edge for bursty webhooks; Celery pipelines for order/stock workflows. Data layer used PostgreSQL 14→16, OpenSearch 2 for product search, Redis Streams + RabbitMQ for spiky workloads and idempotent workflows; GraphQL (Ariadne) for flexible web slices; gRPC for internal consumers.