Looking for a job

Evgeniy Valyaev

@valyay

Senior Frontend Engineer building AI/DX tooling with TypeScript and React—observability, MCP integrations, and scalable design systems.

Spain

Message

What I'm looking for

I’m looking for a senior frontend or frontend-leaning full-stack role in an async, distributed team that values autonomy and engineering judgment. I enjoy building complex products, developer tools, integrations, design systems, and AI-enabled features, with ownership from discovery to production.

I’m a Senior Frontend Engineer with 8 years in TypeScript and React, focused on AI/DX tooling. I build infrastructure and tools other engineers rely on—especially agent observability on OpenTelemetry and Model Context Protocol (MCP)—and I thrive in fully distributed, async teams working with founders and CTOs.

Most recently, at Evil Martians in Valencia, I architected a vendor-agnostic integration platform for AgentPrism, added observability across 6 agent/telemetry sources, and helped surface MCP instructions for better visibility. I’ve also led large-scale design-system migrations (Ribbon UI for a 12.3M MAU platform, migrating ~80% of core interactions) and shipped high-impact fintech work like a real-time, multi-step KYC identity-verification web app and embeddable Web SDK in 4 weeks.

Experience

Work history, roles, and key accomplishments

Frontend Engineer

Evil Martians

Nov 2024 - Jul 2026 (1 year 8 months)

Partner with founders and CTOs across multiple venture-backed startups to lead client-facing discovery, estimation, proposals, and architecture for scoped MVPs. Architected and delivered AgentPrism integrations for agent observability and led a large-scale design-system migration for Ribbon UI used by a 12.3M MAU gaming platform.

TypeScript JavaScript React Next.js Design Systems Component Libraries Frontend Architecture Model Context Protocol (MCP)Observability MCP Integration WebSockets SDK Development CI CD

Senior Frontend Engineer

Headhunter

Feb 2024 - Nov 2024 (9 months)

Led frontend delivery for vacancy-management features and drove technical discovery across legacy XSLT and React codebases by defining scope, decomposing migration work, and aligning risks and incremental delivery with stakeholders.

React TypeScript XSLT Frontend Architecture Migration Planning Incremental Delivery Stakeholder Management

Senior Frontend Engineer

Indrive

Jan 2022 - Feb 2024 (2 years 1 month)

Led modernization of key frontend libraries and production modules, de-risking rollouts through impact analysis and compatibility checks across dependent teams. Initiated performance optimization work that reduced page load time by ~50% and established CI quality gates to reduce production bugs and regressions.

TypeScript React Performance Optimization Quality Gates Linting

Frontend Engineer

Digitalleague

Dec 2019 - Jan 2022 (2 years 1 month)

Built analytics dashboards, reporting, and landing pages for SberImpulse/SberAnalytica’s AI B2B client-matching platform. Introduced frontend testing and performance improvements, improving website load performance by ~5x on key pages.

TypeScript React Front end Testing Performance Optimization Landing Pages Dashboarding

Frontend Engineer

ICL

Oct 2018 - Nov 2019 (1 year 1 month)

Built an accreditation system for a major international event with participants from 64 countries, including badge modules that reduced attendee checkout/check-in time by 5x to about 2 minutes.

TypeScript Frontend Development System Integration Performance Optimization