Aleksandr Lepesii
@aleksandrlepesii
I build reliable LLM products from evaluation to production.
What I'm looking for
I build and operate LLM products end to end, including Vouch, a live multi-user resume-drafting product with a Telegram bot, FastAPI backend, and Vue 3 mini app. I hand-labeled a 342-claim dataset and improved its LLM-as-judge grounding accuracy from 88% to 94%, while raising grounding pass rates from 30% to 90%.
Across Sberbank, Samokat.tech/Ecom.tech, and my B2B ERP consultancy, I've led teams, built production platforms, and modernized delivery systems. My work has supported 19,500+ pickup points under a 99.5% SLA, cut release time from 10 days to 6 minutes, and scaled an ERP SaaS to 300+ B2B clients.
Experience
Work history, roles, and key accomplishments
Software Engineer
Self-employed
Nov 2025 - Present (10 months)
I provide end-to-end software engineering services for startups and growing businesses - from system design to production-ready implementation.
My expertise includes:
• Web development (Vue, React, Angular, TypeScript, Node.js)
• Backend engineering (Python/FastAPI, Go, PostgreSQL)
• DevOps & automation (Docker, CI/CD, GCP, Kubernetes)
• AI/ML integrations (LLM pipelines, on-device ML, GPT-based
Samokat.tech (now Ecom.tech) | Remote | Nov 2022 – Present
Led the frontend development and launch of the Corporate Portal MVP, now the core internal platform for 10,000+ employees. The system consolidates org structure, events, news, knowledge base, booking, and workflows.
Key achievements:
• Architected and implemented core modules using a modular, component-driven approach (React + Feature-Sl
Founded and led a B2B software consultancy focused on building tailored ERP and process automation tools for mid-sized construction companies.
• Built a modular ERP platform covering job site management, task boards, timelines, daily work reports, attendance tracking, document approvals, and mail-integrated notifications
• Delivered MVP in 2 months, scaled to 300+ B2B clients across Russia
• Led
Led 5 product teams (~9 frontend + 3 backend engineers) building logistics and infrastructure products at Sber Logistics, serving 19,500+ pickup points and 13,000+ partners under a 99.5% SLA - starting from an unstructured state and building the process and reporting system around it.
Key results:
• Led the 3-engineer Python team that designed and built an OTP microservice - Python/FastAPI, Celery
Improved user and operational experiences at DPD, one of the largest parcel delivery services in Russia, serving both B2B and B2C clients.
Key contributions:
• Redesigned the core order form — reduced order creation time by 80% and increased new order volume by 28%
• Migrated a legacy Angular 1.5 monolith to a modern Vue.js architecture, reducing tech debt and improving maintainability
• Built se
Frontend Developer
DPD in Russia
Jun 2020 - Jun 2021 (1 year)
Improved user and operational experiences at DPD, one of the largest parcel delivery services in Russia. Redesigned the core order form reducing order creation time by 80% and increasing new order volume by 28%, and migrated a legacy Angular 1.5 monolith to Vue.js.
Worked with a national fitness club chain to modernize their digital presence and build tools for remote engagement, retention, and marketing performance.
Key contributions:
• Delivered 50+ responsive landing pages using WordPress, later migrated to a centralized Multisite architecture for better content management
• Built a Vue.js + Express.js SPA for members — enabled at-home workouts, meal pla
Managed distribution projects for server and data-centre hardware.
• Quanta Computers server equipment (ODM hardware used by hyperscalers)
• Open Compute Project (OCP) standard equipment
• Server components: HDDs, SSDs, GPUs
Ran delivery projects end to end, coordinating vendors and B2B clients. This was my last role before moving into software engineering full-time.
Education
Degrees, certifications, and relevant coursework
Moscow Instrument Engineering College
Associate Degree, Information technology and telecomunications
Russian State University of Trade and Economics
Bachelor's Degree, Information Technology and Telecommunications
2009 - 2013
Tech stack
Software and tools used professionally
GitHub
GitLab
Bitbucket
ESLint
Stylelint
RxJS
Kubernetes
Cloudflare
GitHub Actions
GitLab CI
MySQL
PostgreSQL
iCloud
Node.js
Quasar Framework
Telegram
Redis
Vue Router
Mocha
Vue.js
React-Vue
Webpack
JavaScript
HTML5
PHP
F#
Kafka
FastAPI
Linux
GraphQL
WordPress
vuex
Keycloak
sso
GuardRails
Amazon Web Services (AWS)
LangChain
Ollama
Neon
ArgoCD
Cloudflare R2
Loops
React Hook Form
Qwen
Fresh
Vouch
Availability
Location
Authorized to work in
Website
vouch.leansii.comPortfolio
vouch.leansii.comJob categories
Skills
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