Valentyn Yakovliev — Full-stack Product Engineer

01 — Profile

End-to-end product builder

Full-stack Product Engineer with 10+ years of experience turning ambiguous product opportunities into shipped web, mobile and desktop systems. I connect product judgment, UX, engineering and operational ownership — especially where agentic AI, retrieval and real delivery need to work as one.

02 — Experience

Work history

2025 — Present

Independent AI Integration Consultant

Design AI adoption roadmaps, agent architecture, retrieval flows and cost-aware operating models for product teams.
Build internal agents for planning, code review, documentation and localization workflows.

2025 — Present

Confidential consumer AI platform Full-stack Product Engineer

Own product features from framing and interface design through web, native mobile, payments, AI capability and release quality.
Built agent flows across multiple providers and retrieval, shipped cross-platform apps, and improved loading performance by 36%.

2022 — 2025

Oboard Full-stack Product Engineer

Owned a B2B product area from product decisions through launch, with direct C-level collaboration and frontend review responsibility.
Shipped integrations for Monday.com, Salesforce, Jira and Confluence; connected billing and built internal tooling that reduced repetitive manual work by about 40%.

2017 — 2022

Product teams & studios Frontend Engineer

Built web products for startups and agencies at ITOMYCH Studio, AnyforSoft, IT Svit, Codica and QPARD using Vue and React.

03 — Expertise

Technical skills

Languages

TypeScript, JavaScript, Python, HTML, CSS and SQL.

Frontend

React, Next.js, Vue.js 2/3, Nuxt 3/4, Angular, Svelte, responsive and mobile web.

Backend & APIs

Node.js, NestJS, FastAPI, REST APIs, WebSockets and micro-frontends.

AI & agents

LLMs, AI Agents, Agentic Systems, LangChain, LangGraph, OpenAI Agents SDK, RAG, Qdrant, OpenAI, Anthropic Claude, Google Gemini, prompt engineering, provider fallback and cost control.

Data & infrastructure

PostgreSQL, MongoDB, Redis, RabbitMQ, Kafka, BullMQ, Docker and CI/CD.

Cross-platform

Capacitor for iOS and Android, Ionic, Electron, App Store and Google Play delivery.

Quality & architecture

Vitest, Playwright, E2E, TDD, BDD, SDD, FSD, DDD, EDA and Hexagonal Architecture.

Integrations & observability

Stripe, Monday.com, Salesforce, Jira, Confluence, Sentry, New Relic, PostHog and Amplitude.

Product & growth

Product and UX design, multi-agent orchestration, human-in-the-loop, i18n/l10n, SEO/AEO/GEO, ASO, CRO, A/B testing, analytics, attribution, mentoring and technical leadership.

04 — Selected systems

What I build

Agentic localization across 66 locales; deep-memory and retrieval-backed AI product features; cross-platform products from one codebase; and reusable spec-driven workflows that turn requirements into tested delivery. Personal product names are intentionally withheld; the scope and responsibility are not.