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Viacheslav Riazanskii

@0008845

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Backend Engineer at Yandex who cut marketplace onboarding to around 10 minutes and built bank OAuth and payouts.

Georgia

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What I'm looking for

I’m open to remote and hybrid backend roles.

At Yandex, I’m the feature lead for the B2B personal cabinet domain in a two-sided gig marketplace, working closely with finance and legal engineering. I replaced the account-manager email flow with self-serve OAuth sign-up, cutting onboarding from days to around 10 minutes.

I also used per-step funnel analytics and A/B testing to increase conversion by about 80%, built a major-bank OAuth and payouts integration, and moved B2B billing to prepayment with a small postpay trial.

At CDNvideo, I built high-throughput components in a Go and Python microservice architecture. I redesigned core database schemas and indexing, cutting table and index size by 40%, and raised test coverage to 90%.

At Locklance, I designed and owned the backend of a SaaS multi-tenant platform reused across client products, covering tenant management, provisioning, subscriptions, and payments. I also built client APIs and payment integrations, and work AI-native across the SDLC with agent review and QA loops and human-approved production releases.

Experience

Work history, roles, and key accomplishments

Current

Backend Engineer (Go)

Current

Yandex

Jan 2026 - Present (10 months)

Two-sided gig marketplace. Feature lead for the B2B personal cabinet domain, working closely with finance and legal engineering.

- Owned features end to end: shaped requirements with product, designed the architecture, split the work and coordinated delivery across teams.
- Cut onboarding time from days to around 10 minutes by replacing the account-manager email flow with self-serve OAuth sign-up

Backend Engineer

CDNvideo

Nov 2024 - Jan 2026 (1 year 2 months)

Backend and infrastructure engineering for a cloud information system.

- Built high-throughput components in a Go/Python microservice architecture backed by Kafka, Redis and Cassandra.
- Redesigned the database architecture: reworked the schema and indexing strategy across core tables, cutting table and index size by 40%.
- Profiled services to find latency bottlenecks, optimized them and improve

Backend Engineer

Locklance

Oct 2022 - Nov 2024 (2 years 1 month)

Software studio delivering commercial products for external clients.

- Designed and owned the backend of a SaaS multi-tenant platform reused across the studio's client products: white-label tenant management, automated provisioning, subscription lifecycle and payment processing, serving thousands of paying users.
- Owned client projects from architecture to production: chose the technical approac